I'm considering a carb motor for my next rigs engine.

last time I had crb'd 4x4's, I wasn;t doing the more extreme angle stuff i am now.

Does anyone do any hardcore crazy angle rock crawling with a carb? If so, which, how do you like (or hate) it?

Will I kick myself later?

The report in march Fourwheeler on the "new" Edelbrock seemed awfully positive (but can you trust them?)

I'm just looking forward to a minamilist approach - no more miles of wores and electronically controlled everything

I run a Weber 38 on my stock 2F in my Cruiser. I have a 2lb electric fuel pump on it.

I NEVER have problems with it dying and you could say that I wheel my rig hard!

In fact, last month I rolled it and when it was laying on its side it was running smooth as glass for 30 seconds or so until I could turn it off.

Would I build another rig with a carb? Hell no, however, I also won't spend any $$ truing to improve what I have now on a 25 year old engine.

Inject it.

I run a Motorcraft 2bbl. I have had it on for 3 years, and it has flooded out once without restarting (during the Warn event). It has been getting a little touchy though. I think it is bad gas, and a little out of tune. The Jeep sits all the way on either side idling, and down hill is no problem. It just starts to load up with the nose in the air. The one thing I do have a problem with is bouncing. I does stall when the front end hops. I like the simplicity of it, but we are doing more comps. and can't trust it. Gonna but on a TBI.

I have run quadrajunks for years- they're like poor mans fuel injection. Absolutely de-tuned, powerwise, but my rig will run on its side. If you're a perfectionist and have had fi you might not like it. A buddy of mine bought one of those edeljunk remakes of the quadrajunk and loves it right from the box. simple and functional. I give carbs a thumbs up! If I run dunes then I swap on a double pumper or carter racing carb and HAUL asssss.

DONT RUN A HOLLEY, :mad: TRUST ME

Yes, you can run a carb at crazy angles. I've had good results with the Motorcraft 2100 on a 258, and the Q-jets. Here are a couple of related threads:
http://www.pirate4x4.com/forum/showthread.php?s=&threadid=6315&highlight=qjet

http://www.pirate4x4.com/cgi-bin/ub...c&f=11&t=000795

I've had rigs with these two carbs at enough angle that the engine oil pumps were sucking air, and had automatic transmissions run dry, but the carbs worked just fine. I've had HORRIBLE results from Carter designs (aka Edelbrock) and nothing good from Holley either. Maybe their new ones are better, but they've both advertised "trouble-free" offroad performance in the past, and thoroughly sucked. I prefer a carb because it's simple, can be repaired with a screwdriver, and a little welding won't blow it's mind. I also like the ability to put an inline filter and electric pump on a carbed vehicle for system redundancy. I do have an EFI rig to compare, also. Nothing, neither efi nor carbs, are foolproof or completely reliable; but the right carbs can give excellent high-angle performance.

I'm a edelbrock nut.....I love them..... They can run great when "tricked" right...... You might wanna look into the "Predator" carb. It's kinda rare to see one but they were designed to run on airplanes upside down!!!! I used 1 for a while worked fine for me.........:D :beer: :beer:

Bill, repeat after me:

Carbs are for lawnmowers.:flipoff2:

Pete

i had the carb in my old camo rig tuned in very well. it work pretty damn good. as a matter of fact i was able to get it to work great up to the point just before it rolled. that fact alone save me from rolling on many occasions. ( still rolled my rig a few dozen time despite the limiting switch )

that said i can not imagiane why you would want to purposly run a carb if you had a choice. i love my efi

my factory toyota carb worked awsome, Had my truck sitting on 2 tires and the rocker panal and it could spin the tires in the air. Never had a stall because of angle but never dod anything 2 insane. I plan on running a tuned Q-jet on my new motor. There will be a total of 4 wires on my engine: Coil, Tach, Ground, and Alt.

Carbs are for lawnmowers

Interesting you would say that :p As a matter of fact...I have a lawn mower that has been thoroughly abused - I regularly smash into large rocks and roots, never change any fluid or anythin, never winterize it, never clean it, always leave old gas in it for 6 months, and it ALWAYS starts every time, and runs even when I'm mowing the hill, plus - it doesn't need a stupid $300 electric fuel pump!:flipoff2:

Brian, Aggro, Lloyd, Shaker...thanks for telling me exactly what i want to hear!


still rolled my rig a few dozen time despite the limiting switch

LOL! You need a limiting switch in your brain, mate :D But what fun would that be ;)



that said i can not imagiane why you would want to purposly run a carb if you had a choice. i love my efi

Well, I guess I'm sick of the high dollar fuel injectors and fuel pumps and sensors for everything, and all that. I just have a hankering to return to basics. Not to mention, I scored an almost perfect drivetrain for my project that includes a motor everybody thinks is junk, but which I know I can build for 400hp/450 ft lbs for under $2k, and it's not easily injected. I may bow down and get 60's, but some of us just love to polish turds...mostly because people say i cant :smokin:

There will be a total of 4 wires on my engine: Coil, Tach, Ground, and Alt.

Thas what I'm talkin' about !! Hell, I'm going so retro / retur to simple, I'm giving up the slushbox...no more E controoled tranny, no more hydraulic lines and coolers....jus a big ol' noisy gearbox!

my Q-jet runs great, and it was free! trail fix a carb? easy. trail fix injection?:question: injection is great when working well, i just like it simple.:D

2bbl motorcrafts kick ass......My 302 doesn't seem to like em though. I've tried 4 different ones that I had laying around and I can't get any of them to idle as well as my 2bbl holley.

They are way way way better offroad. I'm currently back to running a holley though. I lowered the float level as low as I could, and it's actually not that bad....

I attempted to get a rebuild kit for the motorcraft, but the parts guys just laughed at me. Since I had no idea what applications the carbs came from, they had no idea what to sell me......It all seems interchangeable to me :confused: :confused:

The chokes suck on the motorcrafts though....

Im running a carter BBD carb on my pile.. only because it was factory and Im a cheap bastard that can't afford FI... In retrospect, as I look back, I wish I would have held out and payed a bit more money for the 4.0 with fuel injection.. I can't get my junk to idle at all on any sort of incline..
Scott

Originally posted by 1badjeep
Im running a carter BBD carb on my pile.. only because it was factory and Im a cheap bastard that can't afford FI... In retrospect, as I look back, I wish I would have held out and payed a bit more money for the 4.0 with fuel injection.. I can't get my junk to idle at all on any sort of incline..
Scott

The carb manage to let you just about flop it at the end of the street :flipoff2: :flipoff2:

Matt

Ah, the venerable Carter BBD.... now THAT'S a lawnmower carb.

"my Q-jet runs great, and it was free! trail fix a carb? easy. trail fix"
You must love rubix cubes.
Last i remember them Q-jets are a bitch to work on.
Thats where the Edelbrock is better. reliabilty of a Q-Jet but the ease of a Holly to work on.

Edelbrock's Performer is an AFB re-badged, and they've always sucked ass offroad. I used to have a '64 Ford pickup which had a big spot of roasted paint on the hood where a new AFB caught fire on a steep and rough hill climb - this was back in the days when new AFB's were still made by Carter, not Weber. When nose-up, they dump the contents of the float bowl right down the carb's throat; they're not worth much nose-down or at side angles either because the vent level is so low that fuel sloshes out if someone farts nearby. Edelbrock's "fix" is little more than a spring-loaded needle and seat, which does nothing for the float bowl vent geometry.

Now the Predator is one that I don't know anything about, except that I've seen a couple, and listened to an engine running through one. I have nothing against Carter or Edelbrock; there's a Carter AFB sitting on my bench right now, and it's a great carb for street machines, which is what it was designed for. But I wouldn't put an AFB (or Performer) on anything that was going to leave the asphalt. Nothing against Holleys either, and love how easy they are to work with, but - in my experience - haven't seen them do more than marginally better than Carters off-road, at steep angles, and in the rough bouncy stuff.

Motorcraft 2100's are easy to work on; they'll even run with the top off, and you can set the float level with the engine running. For me, ease is not the issue. I care whether or not it'll work for what I'll do with it, and with that in mind, there's NO WAY the Performer is better than a Quadrajet offroad. Because no matter how easy it may be to work on, or how much you work on it, you can't fix the design to make it work offroad.

Originally posted by Lloyd
Now the Predator is one that I don't know anything about, except that I've seen a couple, and listened to an engine running through one. .

Predators are a variable venturi carburetor. They are huge though so if underhood clearance is an issue it may not be an option.

CARTER!:laughing: keep sailing bob!

Originally posted by Paul Gagnon
variable venturi

AAAAAAAAAAAAGH!!! RUN!!! NOOOOOOOOO!!!!

OK, can someone please help this poor EFI moron sort out all the lingo.

The "ultimate carb Test follow-up" in March Fourwheeler talks about:

an Edelbrock Performer being a new and slightly modified version of the Carter AFB, and a

Rochester Quadrajet rebuilt by Jet.

But then they talk about the new 1910 series Edelbrock Performer RPM Qudrajet.

So what is going on? Typical mistakes by fourwheeler? Performer is not a type of carb, but just a flashy name they add to them all? Quadrajet - I take it this is not a make or type of carb but more a "style".

Now, I had thought that Quadrajets were square bore, but in the pic in Fourwheeler there are clearly different sized primary and secondary venturis...isn;t that "spread bore"?

Jeez I am one confused puppy.

I haven't heard anything on that Holley Truck Avenger carb,supposed to be desinged for severe angles.

anybody know someone with one?

Quadrajets have always been spreadbore. That's one of the things that help make them a good offroad carb. Tiny primaries that help with the idle and low rpm stuff. Then large secondaries for the fun stuff. Quadrajets were originally made by Rochester, they made almost all of GM's fuel systems for years and years. Remember the early (57's) fuel injection systems on Corvette's and Bel Air's? They were Rochester mechanical systems. Good carbs if you know how to mess with them.

TBIs are also Rochester. I believe they are a GM division (or at leat were).

Pete

I use to run a Webber 32/36 MM on my 2F motor and it did great or at least back then I thought it did... I now would not trade my TBI for the world it is so nice. I say out with the old cause EFI kicks ass.:D :blender:

I have a 2bbl rochester with the floats lowered, it works great for everything except straight down hill. The jets are in the rear of the bowl and canted into the corner so it starves when pointed down for a long period. I have a fix for this, but if I were going anywhere where a f-up on a serious downhill section could lead to a bad crash, I'd rather have the factory efi...
I have had a holley projection and it was not something I would like to depend on.

Originally posted by BillaVista
OK, can someone please help this poor EFI moron sort out all the lingo.

The "ultimate carb Test follow-up" in March Fourwheeler talks about:

an Edelbrock Performer being a new and slightly modified version of the Carter AFB, and a

Rochester Quadrajet rebuilt by Jet.

But then they talk about the new 1910 series Edelbrock Performer RPM Qudrajet.

So what is going on? Typical mistakes by fourwheeler? Performer is not a type of carb, but just a flashy name they add to them all? Quadrajet - I take it this is not a make or type of carb but more a "style".

Now, I had thought that Quadrajets were square bore, but in the pic in Fourwheeler there are clearly different sized primary and secondary venturis...isn;t that "spread bore"?

Jeez I am one confused puppy.

Sounds like typical 4x magazine confusion. The Edelbrock "Performer" label is applied to several carbs now. Before the quadra-jet clone, the Performer name usually referred to the 1400 series square bore Edelbrock carbs, which are basically the old Carter AFB. They suck off road, trust me, I've tried them on several rigs, and the off-road needle/seat assembly isn't enough to fix the design flaws. Good on-road though.

Now Edelbrock has created this Rochester Quadra-jet clone, and also dubbed it "Performer". The Quadra-jet isn't a "style" of carb, it is one actual carb used by GM for years and years. It works much better off-road than the AFB clone, due to better float bowl/metering design and the spreadbore design (the AFB is squarebore, the q-jet is spreadbore). I run a q-jet on the 345 in my '79 Scout II.

I also have good things to say about the 2bbl motorcraft - I run one on the 345 in my '73 Scout II, and it is even better than the q-jet offroad, I think. It is impervious to angles, but violent sloshing will cause some trouble if the rpm's are too low to handle the flooding. It makes no power, has terrible economy, but very reliable at low rpm and goofy angles, in general.

If you like Rubix cubes, you might also like the Carter Thermoquad, which is also a spreadbore design. Unfortunately, the body of the carb is plastic and frequently warps, causing poor fuel metering and vacuum troubles. However, I've found them to be good at angles and low rpm when in good condition.

Don't get the 1400 series Edelbrock, and don't run a 4bbl Holley. Most spreadbore carbs and 2bbls can work fine.

Screw EFI. If you wanted a computer running your fuel system out in the boonies, you'd buy a Lincoln Navigator.

It a Shame you guys stopped talking about the carbs you are having success with and i would love to hear a little more detail about what mods it took to fix the problems, ive been watching everyone else try the new TA 770 Holley and Others running the Quadra puke. Trying to Decide for myself what route to go on my next build up.

I have had nothing but problems in the past from my Edelbrock 800 w/ offroad kit, but i expected nothing less. I'm no professional carb tuner though either.

Since edelbrock doesnt make any other offroad worthy Carb that i have heard or seen yet, for situations like wee have been talking about it makes it tough, that really only gave us wheelers two other options both which have draw backs.

:rolleyes: Wouldnt it be nice if some one made a Carb that would function @ 50-60* side angles and 70-80* forward and aft angles. Your engine would be looking for oil before it would have fuel problems.:rolleyes:



Nobody seems to be going into depth onthier successes with setting up and running a 4bbl on a big v-8 motor using the 700/750+ cfm carbs, idle-6000rpm if you want. How did you set it up so that you wouldnt have problems starting in offcamber positions or in gear. I have read alot of the the articles and searchable pages time and again on PBB and have yet to find a page that goes into depth about extreme V-8s with 4bbls the different methods for setting up a big 4bbl for a big V-8 that will really work well in a CJ thats going to stand on its ass, nose and sides and jump from sea level to Tahoe via the Rubicon and not give you shit the whole way. It seems like everyone stops short with the one carb fits all comment, this is better than that because it works or the just go FI comment...... but why why do you feel it works did you change anything dont tell us you tweaked it what did you tweak and what are the draw backs.

I for one would be interested in hearing what mods you have done or what additional things would it take to make a Carb like that? I like the idea of four wires running my engine thats why i went to DUI for my Distributor 1 wire :D . I figured it wasnt worth starting a new thread since this one is out there. And BTW does anyone have the link to the original upside down thread? or the Predator thread, since i have an old Pred in my garage.

Just to throw this one out there, it talks about the Mcraft carbs. Im not a big fan of them but maybe that could change.
http://www.pirate4x4.com/forum/showthread.php?t=59827&page=2&pp=25&highlight=extreme+carb

HELLLOOOOOOO??? why hasn't anyone posted up the obvious solution??


Billa, if you really have a desire to return to basics, and run a carb. GO PROPANE!

PERIOD.
THE END.

HELLLOOOOOOO??? why hasn't anyone posted up the obvious solution??


Billa, if you really have a desire to return to basics, and run a carb. GO PROPANE!

PERIOD.
THE END.


I was wondering the same thing. You cant get much simpler than that.

HELLLOOOOOOO??? why hasn't anyone posted up the obvious solution??


Billa, if you really have a desire to return to basics, and run a carb. GO PROPANE!

PERIOD.
THE END.

:D :D

That would work great, extremely simple, I've thought about that numerous times, but fair chunk of the long remote runs i do and others do are sometimes in areas that propane refilling/ swapping tanks is not an option. And finding a place to store 40+ gallons of propane without loosing storage space might be a feat


I always wanted to build an engine system that runs on hydrogen derived from an onboard Eletrolisis system and water. You ever get low on fuel, find a nearby creek :). A lot more involved, maximizing the eletrolisis, disted water, presurizing ect but fun to think about. Anyways definately need Carb info for running on regular Dino Fuel.

:D :D

That would work great, extremely simple, I've thought about that numerous times, but fair chunk of the long remote runs i do and others do are sometimes in areas that propane refilling/ swapping tanks is not an option. And finding a place to store 40+ gallons of propane without loosing storage space might be a feat

.

its really not that much of a problem... set it up as a dual fuel. run a 10# propane tank and a 10-20 gallon fuel tank. run the fuel 90% of the time, but when you start gettng off camber etc. switch to the propane.

With a properly tuned dual fuel setup you should not have a problem ANYWHERE.

Holley's suck, plain and simple. I replaced the 500 CFM 2V on the truck (69 F100 4X4) with a 2150 and no more problems. It runs at well over 30° angles and it doesn't eat power valves every 10 miles.

I still have an antique Rochester 2GC on my Jeep 225 V6. When I first got it, the POS wouldn't run on my sloped driveway but after a lot of trial and error, it too runs at some pretty steep angles. Well enough that I very rarely stall or flood out on the Rubicon. I've had it at steep enough angles to loose engine and transmission pressure.

That said, both rigs will eventually get EFI. The truck when I get all the hardware together and the Jeep when the 225 finally dies.

Okay I am not sure why someone brought up a 2 year old thread but PROPANE IS THE ANSWER and cheaper to run as well as never having to be concerned with water in your fuel.


Ottawa has to have a decent amount of propane for automotive use stations and suppliers. A good % of the tanks made for use are all made in Ontario so there has to be a large market there for it.


I could even hook you up with the pieces but I am sure they would be easy to find there for next to nothing, if decide to change your current setup.

I messed around with 2 quadrajunks, a Holley and an Edlebrock before finally going to TPI 2 years ago. I wish I had done it sooner. When I ran carbs, I was always trying to get them to run right. The EFI I havent touched since I installed it. Starts right away and idles fine even after sitting 3 months with the battery out

Go EFI and dont look back

Bella, I have ran just about every carb on my heep. So far the best without a doubt is the q jet. It will run at any angle and I even carry a spare just in case! I had mine sent to the "Carb Shop" in LA. They specalize in tricked out q jets. They will want all your info on your motor combo/drivetrain combo before they set it up. I sent them my core but you can by one directly threw them. It cost I think $275 bucks total for the set up. It will be a bolt on and go set up and the jetting will be spot on!

its really not that much of a problem... set it up as a dual fuel. run a 10# propane tank and a 10-20 gallon fuel tank. run the fuel 90% of the time, but when you start gettng off camber etc. switch to the propane.

With a properly tuned dual fuel setup you should not have a problem ANYWHERE.


Whoa! Anyone doing this? Any info/links with more information??? I'd be more interested in doing this than adding an aux tank to my 40.

Whoa! Anyone doing this? Any info/links with more information??? I'd be more interested in doing this than adding an aux tank to my 40.

theres alot of info about dual fuel systems. search around.

theres alot of info about dual fuel systems. search around.

Thanks for the help fawker! :flipoff2: I was hoping you had a stash of links already.

Okay I am not sure why someone brought up a 2 year old thread but PROPANE IS THE ANSWER and cheaper to run as well as never having to be concerned with water in your fuel..................



Why start a new thread when an old one starts off with the right questions and subject and can be picked up and used.



The Dual fuel is interesting but how long does your 10 gallons of propane last switching it off and on. Where do you have it mounted out of the way?

I know I should have built a DI diesel it would have been easier to get the results im after. But Billa was asking about Carburators, and i was just wondering what carbs have had the best results recently and what mods have worked with what results

another vote for 'pane. simple and cheap. my next rig will be propane.

a buddy of mine runs a newer edelbrock and it dies on the slightlest incline it seems. on the other hand a guy in our club with an old 22r in a yota has pretty good luck with his carb.

I had the newer edelbrock performer on my TAME cruiser and it was crap until I installed the "Off-Road" needle & seat kit. Than it was OK but like I said it was a tame truck. The answer is Propane! That is what I am doing!

I have to agree on the Propane Since I am running it and love it....But.. I have run Webbers and Holleys and was never very impressed with the tuning requirements to get them to run good.

I have been super impressed with Mikuni 40mm carbs though and I think if I were running Gasoline, I would be looking at running dual Mikunis... Very simple carbs easy to work on, easy to tune. And not that hard to adapt to most any intake... .02

Qjet or EFI, no question. You shouldn't give in to the stereotypes about EFI. EFI is really freaking easy to wire up nowadays.

I've run a LOT of q-jets in the past as well as an Edelbrock AFB-type. I ran a holley once, too. They were all replaced with q-jets of one kind or another. I've have two of the Edelbrock q-jets. These are as real as a q-jet gets, I don't believe they are simple replicas. A long time ago Carter produced many many q-jets and various other carbs for Rochester. Edelbrock has some connection to Carter for the AFB, I have a feeling it's the same deal for the q-jet designs.

Holley=junk
Edelbrock AFB thingy=junk
Q-jet=bolt on and it works. As far as running "better" on angles, might consider lowering the float just a smidgen, that's it. I've run them on stock 350's to a 550hp 454.

You're a smart guy Billa, you would do good with an EFI swap. I've seen way more dead carb'd trucks than EFI ones. EFI isn't rocket science but you can't be stupid about it either. Most people who bitch about EFI don't understand what they're dealing with. As far as $ go for EFI, you don't need high zoot injectors and fuel pump to run big HP. I run a $40 in-tank pump from Farm and Fleet on my 454 with injectors I found on ebay for $180 (new). I also run a GM ECM that I reprogrammed and it works awesome, $45 at your favorite junkyard. Hell I bought a spare ECM for $10 at the swap meet a few years ago.

If you want to do it the right way you're going to spend $500 on a carb and fuel pump. With more time invested you could run a TBI for about the same cost. That being said I'm putting a TBI setup together for my junker 350 to replace the edelbrock q-jet that runs great, WTF?

Andy

If you do go with the Quadrajet, or any derivative of it, I would reccomend buying/checking out the book titled Rochestor Carburetors by Doug Roe, it is a pretty quick read, but will really help you get to know the carburetor.

By the way, Billa Vista, you said you are going use an engine that is "junk" but you know can be built up; what kind of motor is it?

I really think the predator carburetor is a good alternative. I can admit that it wasn't optimal for drag racing but the basic simplicity makes it hard to beat offroad. You have two adjustment screw and that's it. There are very few things that can go wrong and it will run upside down (ask me how I know lol).

Yes, the eddie/carter sucks balls in stock form offroad. It also sucks balls with the "offroad" needle and seat. If you have one and want to make it work do this...

1) go here http://www.ih8mud.com/tech/carter.html and do EVERYTHING the page tells you to do

2) get an adjustable fuel pressure regulator, and run it on 2psi

Doing what i just typed will get you Qjet/Motorcraft 2bbl performance out of an Edelbrock for about $40 worth of parts.

I didn't read through the whole post but here is my .02

ive tried everything to make regular holleys and edelcraps work offroad and nothing works as well as a quadra-jet out of the box.

friend tried the edelbrock offroad carb (after we told him not to get it) and it almost killed him when he was going down a hill and it killed the motor---at the bottom of the hill replaced it w/ the origional quadra and trucked on throught the rest of the trail.

Motorcraft 2100 allowed this, whereas the Carter carb barely got me to the bottom of this same hill before. http://users2.ev1.net/~gpeters89/pictures/100_0218.jpg

I had the motorcraft 2100 that is supposed to be good. I never could get it dialed to my satisfaction. No one has talked about mounting the quadrajet backwards. Remember when Chris Durham won ARCA with no money sponsor and a backwards quadrajet? Well those days are gone, but I bet the backwards quadrajet works just as good now as it did then. IMO the bouncing part is the hard part to make a carb work, that's why the Durham example is such a good one.

1) go here http://www.ih8mud.com/tech/carter.html and do EVERYTHING the page tells you to do

I've done that last step using JB weld. There is also a small channel above the gasket (in the cover) that I filled. But I don't know if fuel really gets up there or not.

Propane hands down!! A new carb is expensive-and still suxxx
www.gotpropane.com

HELLLOOOOOOO??? why hasn't anyone posted up the obvious solution??


Billa, if you really have a desire to return to basics, and run a carb. GO PROPANE!

PERIOD.
THE END.
Crap.... you stole my thunder....

I was going to say that I run an IMPCO carb and LOVE IT!
Runs at every angle I have put it to.
I have ONE wire going to my lockout, one wire going to my distributor (points) and the alternator wires....

billp have you had the carb apart again to see if the jb weld has held. Im just curious because I would think the fuel would start to eat it. don't know for sure though.

I drove my car with an edelbrock performer (1410) on a small sloped driveway and it cut out :D.

arndog

We run the Edelbrock Quad 795 cfm with a vent. Bought it new just before TTC and had to rebuild it. There was a piece of packaging plastic in the carb, the bowl was plastic and the metering rods were seized. Sad. Worked alright after.

Looked into the predator but they are very finicky. You really need to know how to adjust it.

To be honest, we are looking into going fuel injection

billp have you had the carb apart again to see if the jb weld has held. Im just curious because I would think the fuel would start to eat it. don't know for sure though.

Yeah, it's fine. I've also repaired gas tanks with JB weld. I haven't tried the quick weld, only regular old JB weld.

holley actually made a "quadrajet" type carb for gm a few years. It has the central float bowl and q-jet bolt pattern with mechanical secondaries. It was only like 500 cfm but works wonders on smaller motors. I had one I run for a while when my pooter went south (just to try it), the carb got better milage and run better than my tbi on my 4.3, it worked as well as any carb offroad but its not anything like efi so I promptly swapped back. I would run one of them holley q-jet replicas on a street machine over efi any day of the week because of the simplicity and strange but true better gas milage. I however wouldnt trade efi for anything offroad.

Oh and thinking of carbs, why cant we make our carbs work as well as say the carbs on motocross bikes? them things are amazing. Maybe look into what makes them work and see if any of that tech can work in the offroad world, or be used to design a true "offroad" carb. I'm sure the float bowl on the bottom is part of what makes them work but there has to be more to it.

good thread (even with all the TBI and Prop plugs) I will be running a carb. I have a basic holley 600 Vac. Secnd. carb... So far my brief research shows that the holly truck carb is a side hung, with springs in the floats. The marine style vent tube. $400 seems like a lot for a "new" carb with out knowing what/if they did any thing other than a marketing hype...

Anyone have a new truck avenger apart yet?

What are good aftermarket resources for these parts. Yes summit but any PBB vendors?

I also agree there is a market for a off-road type carb. Be hard to hang a side draft on a chevy but be very doable on the inline 4cyl/6cyls...

What other tricks you all doing ?

my motorcraft 2100 is great, never have had a problem with it stallin on me...now in my 77 with the edelbrock performer w/offroad needle and seat, that thing SUCKS!!!

here is a vid of my 77' choptop goin up kodak rock at uwharrie...notice it stalls out about 15 times...this was its virgin run and it may do better with some more tuning, but i was PISSED!!

http://www.fullsizejeeps.com/jeeps/index.php?action=downloadfile&filename=ctrock.wmv&directory=movies

Had a 2100 it worked great. Bought the Edelbrock jury is still out on that one (rig has not seen a trail with new carb). Isn't there a 4 barrel version of the 2100? Or is that the 2150 in previous posts? cause if I cant fix the issues I know I'll have with the Carter/Edelbrock I'd be interested in the motorcraft 4 barrel.

Isn't there a 4 barrel version of the 2100? Or is that the 2150 in previous posts?

Yup. IIRC it was a vac-secondary square bore called the 4100 or something similar. As stated earlier, the 2150 is just a different 2100 with bigger bores and more smog crap. It's still a 2V. A Ford 390 FE that I took out of a 64 Galaxie wagon had a 4100 on it. This was the 300HP, 427Ft/Lbs "Thunderbird V8" option. I have seen several T-Birds from the '61-'66 range with this carb. It only is about 425 or 475 CFM though. Great throttle response and idle quality. I don't have any experience with it off road however. Should be fine, as the float bowl hardware looked like 2100 stuff.

The carb looks like a cross between a Holley 4150 and an 2100 (Or two 2100's grafted together). It has a LARGE secondary vacuum chamber cast into the rear float bowl body (looks like an oversized accelerator pump), with a link rod attaching the diaphragm lever to the secondary throttle plates.

They're kind of rare, but are available on places like E-Bay. I seem to remember seing it listed in the HolleyReman section of the Holley web site. They rebuild and sell all makes of carbs. Get a part number from their listing and bring it to NAPA/Vatozone/Kragen. BTW-The earlier Ford carbs of this vintage were called "Autolite" as opposed to Motorcraft. I think the name change happened around 1968 or so. A '67 Autolite 2100 is identical to a '68 Motorcraft 2100 except for the name however. I think Allied Signal bought and/or trademarked the Autolite name to be used with spark plugs, rebuilt alts, and the like. Motorcraft became Ford's fuel and ignition system label.

I bought a rebuild kit from NAPA with no problem (in stock even). Of course this was in 1989 or so... I wish I'd kept that carb. It would have been fun to experiment with. Next time I see one at PNP I'll grab it for tinkerin' purposes.

just like aggro said, i like to be able to just swap the carb for when i need more power etc

I have run quadrajunks for years- they're like poor mans fuel injection. Absolutely de-tuned, powerwise, but my rig will run on its side. If you're a perfectionist and have had fi you might not like it. A buddy of mine bought one of those edeljunk remakes of the quadrajunk and loves it right from the box. simple and functional. I give carbs a thumbs up! If I run dunes then I swap on a double pumper or carter racing carb and HAUL asssss.