A guy I work with drove his truck in today after finishing his diesel conversion. He put a little old 636 cu/in CAT engine and allison tranny! This is a dune truck, but it's still damn clean! Anyone else running big diesels?

http://home.earthlink.net/~ekronsprint/rustys_truck/DCP_1906.jpg

http://home.earthlink.net/~ekronsprint/rustys_truck/DCP_1908.jpg

http://home.earthlink.net/~ekronsprint/rustys_truck/DCP_1912.jpg

This is 5" exhaust! :eek:

http://home.earthlink.net/~ekronsprint/rustys_truck/DCP_1916.jpg

That thing is cool:cool:

Holy mother of GOD!!! How much does that motor weigh alone? I do have to admit it looks COOL though

The engine is around 1500 lbs alone! That thing tipped the scales at almost 8k with the old 390 in it! Can't wait to see it now!

Originally posted by erich_in_AZ
The engine is around 1500 lbs alone! That thing tipped the scales at almost 8k with the old 390 in it! Can't wait to see it now!


Yikes!!! I still keep throwing around the idea of putting my 6.2 in my Scout instead of a 350, but I just can't come to grips with the weight issue.

Originally posted by Curtis



Yikes!!! I still keep throwing around the idea of putting my 6.2 in my Scout instead of a 350, but I just can't come to grips with the weight issue.

lol.. a chev 6.2l diesel weighs less than the international v8's do...

what kind of tcase is that?? NP200???

Not sure, but I'll try to find out

And I thought my new 7.3L powerstroke was big... :rolleyes: :flipoff2:

-Matt

:eek: HOLY SH!T , Did you beef up the frame at all to handle the torque of the 3208 CAT ?


you guys are crazy:beer: :smokin:

Anyone else running big diesels?

:D

THat's a Cat 3208! Hella heavy b!tch for sure!

There's a guy in GA who put an 8.3L Cummins C-series into a Ford F-series. TDR link (http://www.turbodieselregister.com/forums/showthread.php?threadid=36258&perpage=15&pagenumber=1) with pics.

I think I like the older iron better. :D

Originally posted by Curtis



Yikes!!! I still keep throwing around the idea of putting my 6.2 in my Scout instead of a 350, but I just can't come to grips with the weight issue.

thats exactly what i'm going to do

phoned a guy today with one in the paper for $100.00 :eek: fwking typo it was $1000.00 :mad:

Originally posted by T1H5_TA3


lol.. a chev 6.2l diesel weighs less than the international v8's do...

what is the weight of a 6.2

I thought the 3208 was aluminum block?

I once considered doing a 3-110 Detroit in my '81 shorty, then got a free '68 327 chev....

That Detroit is Turbo over supercharged 3 cylinders at 110 cu in per cyl....they were originally for military gensets....

I thought a Cat 3208 was a cast Iron straight six..

Am I wrong?

bennett

3208 cat is a V8, cast iron block and heads. steve

3208 s are pretty common in school busses and dump trucks... No horsepower, they don't last long in heavy service, but it would kick ass in a pickup with the right gears.

3406 is the straight six cat...weighs about 3000 lbs. , 850 c.i. , w/1500 ft/lbs of torque...I'm putting one in my motorhome :)

I got a friend that put a 4cyl cummins in a jeep

I located this Cummins 6AT for a friend and he put it in his FJ55 Landcruiser..
pics here...scroll down
http://www.cisautoweb.com/dtlc/royalfj55.html

hopefully within the next year or so i will get a cummins 4bta swapped into my toyota 4 runner. It looks like its gonna be a tight fit but it will fit.

HOLY FAWK :eek:

that is sooo sweet

[QUOTE]Originally posted by 4runner
[B]I thought the 3208 was aluminum block?

3208 is a cast iron engine
cat does not make an alluminum block, I dont think anybody produces a aluminum diesel engine block.

Everything on this truck is cherry! This guy is absolutely awesome with forced induction. He has this, a turbo'ed 4.0L jeep (I think it runs in the 12-13's) and a twin turbo and a tubbed 63 falcon sprint. This truck used to have a paxton supercharged 390 until he did this. If you guys need turbo/blower work done around this are, he's your guy!

That is officially the coolest truck I have ever seen. I love those old fords.

I believe the 6.2 weighs in around 750-800 pounds dry. It's one big monster when compared to a SBC 350, which I am still waiting for :( But man the torque and inability to kill it. Yum

Uhh, 6.2 torque is comparable to a 350...


Pete

Originally posted by pcorssmit
Uhh, 6.2 torque is comparable to a 350...


Pete


yup but at a lower RPM

and if ya turbo it and throw on a big ass radeator to keep it cool and its hard to beat 25 MPG

as far as caterpillar nomenclature goes, it is real simple to tell how many cylinders a cat has, its the last number in the number

i.e.,
3406=34 series , 6 cyl.
3208=32 series , 8 cyl.
3512=35 sreies , 12 cyl.

and on another note, the detroit 3cyl mentioned, there is a guy running one in a 79ish one ton chevy in front of an older fuller seven speed, and a ranger(?) splitter box, with twin turbos, and a blower (3-71 roots), and that thing is absolutely incredible. the best thing about old detroits is the sound. three big cylinders of two-stroke diesel sound under load is a life altering experience, topped only by the same engines in larger sizes. if you ever get the chance, find someone who is running a silver edition 8v-92 and straights!!!

Yep, Detroits make alot of noise...Here's some semi-useless diesel trivial info. , for the Gas masses...
Detroits are two-strokes ...they need rpms. to make power...
A blower from a old detroit, is a supercharger for a four-stroke, but, a detroit needs it to run, just about everything else is a four-stroke, cat, cummins ....
Detroits are I.D.'d as "6-71" (straight six cyl. @ 71 C.I. per cyl., naturally asperated)...or "8v92t "(V-8, 92 C.I. per cyl. W/ turbo charger) Or, 8v92tacc, (v-8 92 C.I. per cyl. with turbo and After Charge Cooler), (which cools the air after the turbo, and before it goes into the cyl. , makeing it more dense), and on and on...
Additional useless info. ....
To pump-up a diesel, they Lower the compression from about 19:1 to 15:1 or so, and add more fuel and turbo boost pressure.
Bad ass 850-900 C.I. diesels can make 1000 h.p. or more, for a short time... Until the exhaust temp. gets so hot , it melts the alum. pistons...fwiw

Working as diesel mechanic, I ran across a late model Pete with a transplanted CAT 3408. That thing was sweet! CAT still sells the 3408 in marine and industrial apps. I knew something was up when it pulled into the bay with a awsome purr instead of the inline-6 sound of the 3406's. The driver said the 3408 pulled great, but he couldn't drive into CA because of the illegal engine swap (no modern emissions on the engine he used). I believe they make a 3408E with electronic controls now.

Originally posted by hightechredneck
Working as diesel mechanic, I ran across a late model Pete with a transplanted CAT 3408. That thing was sweet! CAT still sells the 3408 in marine and industrial apps. I knew something was up when it pulled into the bay with a awsome purr instead of the inline-6 sound of the 3406's. The driver said the 3408 pulled great, but he couldn't drive into CA because of the illegal engine swap (no modern emissions on the engine he used). I believe they make a 3408E with electronic controls now.

Cat also makes a 3412 which sounds sweet as heel when it's purring along. Working for the Cat dealer down here I see some really cool engines.
How about a 3516?
Or a 3608?
Big MOFO's for sure!

How about this big old Cat diesel :eek: :D http://pics.montypics.com/Alexisguy/2002-11-03/catdiesel.jpg

Originally posted by bennett
I located this Cummins 6AT for a friend and he put it in his FJ55 Landcruiser..
pics here...scroll down
http://www.cisautoweb.com/dtlc/royalfj55.html


Sorry Bennett, got moved over here to:
http://www.collegeinternetsolutions.com/cisautoweb/dtlc/royalfj55.html
Also, anyone interested in a diesel swap might be interested in this pages, goes over a bunch of the most commonly talked about swaps, mostly 4 & 6 bangers in relationship to the Land Cruiser but works for medium - heavy vehicles with medium - large engine bays:

http://www.collegeinternetsolutions.com/cisautoweb/dtlc/cummins.html

Originally posted by erich_in_AZ
A guy I work with drove his truck in today after finishing his diesel conversion. He put a little old 636 cu/in CAT engine and allison tranny! This is a dune truck, but it's still damn clean! Anyone else running big diesels?

http://home.earthlink.net/~ekronsprint/rustys_truck/DCP_1906.jpg

http://home.earthlink.net/~ekronsprint/rustys_truck/DCP_1908.jpg

http://home.earthlink.net/~ekronsprint/rustys_truck/DCP_1912.jpg

This is 5" exhaust! :eek:

http://home.earthlink.net/~ekronsprint/rustys_truck/DCP_1916.jpg

Sweeeett!:eek: :cool2: :smokin: :D :D

Big Diesels?

This truck's got a big diesel... http://www.caterpillar.com/about_cat/news/03_products_n_services/images/797wtrk2.jpg

Cat 3524B... Of course, it'll haul 400 tons and where ever it drives the road compresses and realeases like a sponge. The ground shakes when the operator increases engine RPM too, and, if you're standing close enough to one when it departs under full throttle you'll probably get blown down. I was 8' away from a guy that drove past me today and the ground I was on compressed and realeased about a foot.

I'm still pretty keen on that 8.3 cummins. We have one at work in a Freightliner f-80 or something (which ever the tandem model is), and with the 15 spd, it hauls some serious ass. LOTS of torque for such a small engine, hauls the digger truck around like nothing. I can well imagine what it would be like in a late model ford.

As far as the Cat in the ford, well that's just sick. Ford may win me over yet :)

I dont think anybody produces a aluminum diesel engine block. [/B]

Detroit made a 3 and 4 cylinder 71 series with an aluminum block. They were used in gamma goats in the military.

Originally posted by DieselYJ


Detroit made a 3 and 4 cylinder 71 series with an aluminum block. They were used in gamma goats in the military.

There was a lot of 53s used in Gamma Goats as well. 3-53s with aluminum blocks. The blocks were made with aluminum to reduce weight, as well as to reduce the likelyhood of setting off magnetic triggered mines in amphibious operations.
A friend of mine found about ten 6V53 aluminum block marine engines, twin turbos, former military. 550 Horsepower. They have all been "de-militarized", which means some jack ass came along with a sledge hammer and took some major league swings at the blocks. But most of the blocks were only hit on the panels covering the intake ports. The whole lot of engines will produce at least three good engines.
Now for the fun part.
The first one done will go into a Ford Super Duty with a 1000 Allison and D80 rear axle, to make the ultimate tow rig!
The size and weight will be perfect for a SD, and the power will
have us passing sports cars, at full load:D running over the Sierras.

As a side note, the "blower" on a Detroit is not a "supercharger". It is required on the two strokes just to achieve natural aspiration. They are not spun up fast enough to supercharge the engine. The turbocharger does the supercharging (raising intake pressure above ambient air pressure). A blower on a four stroke engine would be a supercharger depending upon blower speed, and camshaft profile (too much overlap would prevent pressurization)

The owner of a machine shop near my house has a '79 Ford F350 utility truck with a 4T53 Detroit in it and a Clark 5 speed tranny with a 3 speed Brownie behind it. When that truck used to run, it would really motor on down the road. He's planning on getting another engine in it so he can use it as his daily driver.

I hope that Allison 1000 is going to have some mods, because they start to slip in 5th at about 450 hp behind the Dmax.

i m curious how you are going to get the allison 1000 to shift unless you have the stand alone and put some sort of tps on the injector pump of the detroit i was considering the same setup with a silver 6 71 then deciced to go with a allison mt 653 for simplicity

The Gamma's were predominatly -53's.
Very very few -71's.
The Alloy block was used strictly for wieght reduction.

There WERE all-alloy non-magnetic 3-53's for minesweepers, though.

Really bitching set up here.
http://geocities.com/galmini/truck.htm
Besure to crawl around the site and chech out the built up.

Enjoy.... 09

Have you guys ever watched big rig racing? They were talking about a all alluminum I-6 with like 1500hp and 3000lb-tq:eek:

I got a little Mercedes Diesel in my Unimog. 5cyl turbo diesel

Did you know all the diesels listed here could run off free fuel you get from your favorite resturant?

Mine is going to.

Yeah, as long as you doen't have to start it below 50 degrees and like smelling like chicken fingers :D:D

Originally posted by That Mick
Yeah, as long as you doen't have to start it below 50 degrees and like smelling like chicken fingers :D:D

You can start at any temprature u want.

Also keep a big dawg in the back to chase off the BBW (Big Beautifull Woman) who love the aroma of your truck. Or use Biodeisel (one of the Veg. oil fuels) . No smell and wayyyyyyyyyyyy less pollution. God forbid.... you could be GREEN

Originally posted by coachgeo


You can start at any temprature u want.

Also keep a big dawg in the back to chase off the BBW (Big Beautifull Woman) who love the aroma of your truck. Or use Biodeisel (one of the Veg. oil fuels) . No smell and wayyyyyyyyyyyy less pollution. God forbid.... you could be GREEN

I don't have a problem with being green, hell I'm thunking about setting my rig up to burn E-85.

I've always heard that the fry oil doesn't burn well enough to start a cold motor. Made sense anyhow..

How's 'bout Marty Smiths (http://www.winsouls.net/pbc/oliver/oliver.htm) Pro Field puller.

3208 Cat.

He's had a helluva time gettin' a clutch to live.

Can ya say 80 mph tire speed?:D

If someone wants it, Lump has a 671 mated to a allison for sale. 38K or so on the mill, sounds real cool. Came out of a 68 Ford firetruck.

I want to put a 4bt in my Toy just for the hell of it :D


Joe

this is in my buddies ford.7.3 powerstroke.

http://us.f1.yahoofs.com/users/da6ecfc9/bc/Motor+Fully+Detailed/Motor+complete+6.jpg?

look, powerjokes dont like having their pics posted. :D


7.3 joke is a ittie bittie smoker


Joe

Originally posted by That Mick


I don't have a problem with being green, hell I'm thunking about setting my rig up to burn E-85.

I've always heard that the fry oil doesn't burn well enough to start a cold motor. Made sense anyhow..

Actually that is a miss informed thought. it will fire right up with out a problem in the summer. Has nothing to do with enough burning power. The Diesel engine was invented to run on peanut oil.

The problem is literal to the word "cold" as in if the outside temperature gets cold the veg oil thickens to much and the fuel pump and injection pump cant move it. If you start it via other means and let the veg. oil heat up then burn the veg oil it works just fine.

Orrrrrrr if you thin the veg oil, say run it 50/50 with diesel; better yet with biodiesel, then you'll be fine year round in many climates.

Where I live it gets down to 25's or so at night in winter so I plan to (once I get her fixed) run my diesel Datsun on 50/50 in the winter with a preheated 1/2 pint inline fuel tank and fuel lines. (it will look like a large inline fuel filter that is heated. This will be done w/ 12v heaters turned on few minutes before start up. This should give ample warm fuel to run the engine till it is warm. The hot fuel in the return line will warm the stuff in the big tank.

Originally posted by Rocktoyo

7.3 joke is a ittie bittie smoker


I dunno about that, I used one to haul 10k of furniture the other day, worked better then the little Cat V-8's in our regular trucks.

Originally posted by That Mick


I dunno about that, I used one to haul 10k of furniture the other day, worked better then the little Cat V-8's in our regular trucks.

You're not comparing a 1 ton that weighs 7000 pounds to a 5 ton that weighs 14,000 are you?

Originally posted by coachgeo

The problem is literal to the word "cold" as in if the outside temperature gets cold the veg oil thickens to much and the fuel pump and injection pump cant move it. If you start it via other means and let the veg. oil heat up then burn the veg oil it works just fine.


When I lived in Ruetlingen, Germany, we managed to get a winter blast with a -20C high temp. City Fleet of diesel buses was in bad shape, as they only got 50% of them running.

On, not so bright, fellow reasoned he needed to keep the diesel warm in his Mercedes so it would start in the morning. Yep, he put a gas HEATER under the fuel tank before heading to bed. Thankfully a detached garage, but the exposion was rather loud. Oh, German insurance... common sense clause... you do something stupid, they do NOT pay. So he got to buy a new car and rebuild his house out of his own pocket! :D

Tom :usa:

Originally posted by That Mick


I dunno about that, I used one to haul 10k of furniture the other day, worked better then the little Cat V-8's in our regular trucks.


I used to work for a Furniture store, and we used a 4700 IHC with the T444E in it, basically the same engine, and it did decent. The truck lacked a little on hills, but i live in Oklahoma, hills arent much of an issue.

Originally posted by fish
[ I dont think anybody produces a aluminum diesel engine block.

arnt the land cruser diesels (Hino sp?) aluminum?

Originally posted by roundrocktom


Thankfully a detached garage, but the exposion was rather loud. Oh, German insurance... common sense clause... you do something stupid, they do NOT pay.Tom :usa:

What do you mean "common sense clause"?? You mean you can be held accountable for your own stupidity?? What's the world coming to?? :confused: :confused: :D

Originally posted by MR4WD


You're not comparing a 1 ton that weighs 7000 pounds to a 5 ton that weighs 14,000 are you?

Um- no...
10K of furniture- IE 10K PAYLOAD.

GVW ~ 28K with a International 4700, T444E, 5 speed Fuller.

Thats the same engine and similar transmission ratios as the 7.3/5speed in a F-350.

Slightly underpowered, but infinatly more reliable than the V-cats.

In the time since this thread came up last, the 2 V-cats in our GMC's have required 1 head gasket, 2 starters, a water pump, and 2 full sets of injectors.

The 7.3 truck has needed fuel, oil, and filters.

Our DT466 and DT530 trucks have needed fuel, oil filters and one Diamondlogic ECU. The truck was hit by lightening.

Cat makes great construction equipment, and good motors, as long as it displaces over 1000 cubes.

Cat's OTR engines range from marginal to horrible.

Originally posted by That Mick


Cat makes great construction equipment, and good motors, as long as it displaces over 1000 cubes.

Cat's OTR engines range from marginal to horrible.

I'd have to argue that. I've driven Cats, Detroits, and Cumm-aparts and had a lot less trouble out of the Cats than any other engine. It was a Cat in my 2000 Pete that pulled a 60,000 Lb payload, 90,000 Lb gross weight (yes, I had permits) from Russelville, KY to Oswego, NY. There's a ton of hills on that route.

Originally posted by Erich In AZ
This is 5" exhaust! :eek:

http://home.earthlink.net/~ekronsprint/rustys_truck/DCP_1916.jpg


A guy I work landscaping for has a Dodge 3500 with the Cummins...Banks turbo, exhaust brake, etc...AND A CUSTOM 6" EXHAUST!!!! I saw it and was like :eek: :eek: you could fit a damn soccer ball in that thing!

Originally posted by elf_cruiser
what kind of tcase is that?? NP200???

I think thats the stock Spicer 24 :eek:

Originally posted by WikdWaze


I'd have to argue that. I've driven Cats, Detroits, and Cumm-aparts and had a lot less trouble out of the Cats than any other engine. It was a Cat in my 2000 Pete that pulled a 60,000 Lb payload, 90,000 Lb gross weight (yes, I had permits) from Russelville, KY to Oswego, NY. There's a ton of hills on that route.

It's odd like that. You get heavy haulers like yourself who swear by them, and bedbuggers like me who swear at them. We've got a pair of K-W's at work, nearly identical trucks except one's got a Sig. 500, and the other's got the 500/550 Cat. We've had nothing but trouble out of the Cat, maybe it doesn't like sustained 79.9 MPH :D:D.

Originally posted by That Mick


It's odd like that. You get heavy haulers like yourself who swear by them, and bedbuggers like me who swear at them. We've got a pair of K-W's at work, nearly identical trucks except one's got a Sig. 500, and the other's got the 500/550 Cat. We've had nothing but trouble out of the Cat, maybe it doesn't like sustained 79.9 MPH :D:D.

Maybe they just get lazy pulling 10,000 pounds of furniture and ripping my doors off when I'm creeping uphill in 8th gear. :D

Originally posted by Chief yelling alot


arnt the land cruser diesels (Hino sp?) aluminum?

Toyota diesels over here (not Hino,) have al heads since 1990, but cast block still.

Originally posted by Mikel


What do you mean "common sense clause"?? You mean you can be held accountable for your own stupidity?? What's the world coming to?? :confused: :confused: :D

:D ;) :p

Originally posted by WikdWaze


Maybe they just get lazy pulling 10,000 pounds of furniture and ripping my doors off when I'm creeping uphill in 8th gear. :D

Diffn't stroke for diffn't folks, man :D:D

I will say, it's hard to beat the money bedbugging, unless its hauling Haz-Mat :nuke:

Originally posted by That Mick


Diffn't stroke for diffn't folks, man :D:D

I will say, it's hard to beat the money bedbugging, unless its hauling Haz-Mat :nuke:

I didn't mean it as an insult, hope you didn't see it that way. I do get jealous watching y'all wizz by on the uphill, but damn that downhill is fun!
You're right about the money. It's almost obscene what you guys can make.

Rocktoyo, do you know the asking price on that 6-71?

Has anyone ever converted a big diesel to gasoline. Maybe like a big CAT. I bet it would make more torque than when it was a diesel.

i have heard of people converting 350 ci diesels to gas. i have forgotten what they were, Olds maybe.

Has anyone ever converted a big diesel to gasoline. Maybe like a big CAT. I bet it would make more torque than when it was a diesel.
Your kidding right? I would like to see you get more that 1500ftlbs from a 5.9 w/1 turbo and still be able to drive it on the street.

Pics aren't working for me. They don't show up in the post, and when I try to directly access them I get an error.

ANybody save 'em?

Pics aren't working for me. They don't show up in the post, and when I try to directly access them I get an error.

ANybody save 'em?


Maybe it's casue the original thread was started like 2 years ago ??? Cousin Eddie Voice " I don't know "

Id like to see the pics too. I bet a 3208 would put out more torque on gas.

RUle of thumb is that a diesel will make less hp, but more torque than a same sized gas engine.

The type of fuel has very little to do with the amount/type of power produced. Diesels have typically made more power in the lower RPM range because the injection systems used on them have not been up to the task of higher RPMs... therefore the entire motor was designed to run at low RPM (long stroke, heavy internals, etc).

Theoretically, if you could design an injection system that could handle it, you could buil an INDY race motor that runs on diesel. Again, the fuel has nothing to do with it, its all about how much, how quickly, and how precisely you can deliver it while still keeping it under control. 14,000 rpms is rediculously fast, but it is not necessarily beyond the limits of technology.

There ARE diesels out there that can run at 6000+ RPM when properly built. (Think big Detroit 12V71)

But just to clarify, the reason diesels are usually way heavier is to hold in the higher compression ratios correct?

If I was going to put a diesel in my truck, I would use a Cat 3126 (new models called the "C7"). 7.2L inline six that weighs about 100 pounds more than a Cummy ISB. Where I work, the C7 is starting to replace the ISB in busses, as they have proven to be more economic and less problematic. Hmm...maybe I could find a wrecked one for cheap...

100 lbs more than a 8.3 or 5.9?

A blower from a old detroit, is a supercharger for a four-stroke, but, a detroit needs it to run, just about everything else is a four-stroke, cat, cummins ....
Detroits are I.D.'d as "6-71" (straight six cyl. @ 71 C.I. per cyl., naturally asperated)...

As a bit of useless trivia knowledge I'd like to have based on the quoted post... I was wondering if the naming convention for the detroit diesels was how the naming convention on 4 stroke superchargers was created. IE a 6-71 supercharger pumps the same amount of air as a 6-71 detroit diesel blower? Just wondering.

100 lbs more than a 8.3 or 5.9?

I doublechecked and I was wrong. The Cat C7 (3126, 7.2L) weighs 1,295# and the Cummins ISB (5.9L) weighs 1,150#. These figures were pulled from the manufacturers websites. So the Cat weighs 145# more than the Cummy.

Although the C7 is a good engine, they are having some serious problems w/ the injectors & HEUI pumps. I have a lube truck w/ a C7 and a service gtruck w/ a C7 and they both are havingf injection problems. Most of the trucks that are being sold are going to the dealer before they even are sodl to get some updates & repairs.
The lube truck I am talking about has been inthe shop 4 times so far. It only has 7000 miles and 500 hours on it.

The C7 is the "new" 3126. Older versions with mechanical inj. are pretty trouble free. Even the newer versions are very reliable. I forget off the top of my head all the differences between the C7 and 3126, but I am pretty sure the injectors are different. However, in the buses where I work, the C7 are starting to replace the ISB, as it has been our experience that the Cat is troublefree and the Cummins are frequently having electrical and computer problems. Admittedly, I have never heard of any problems like this in ISB-powered Dodges. I would still choose the C7/3126.

Here is some info I stole just to make this thread a little more complete. I found a guy today that did a gas conversion on a 3208, i'm gonna try to get a hold of him just for kicks. Hey why you guys are arguing about stuff that is enlighting the rest of us what do you have to say about the differences between the cummins ISX, ISM, ISL, ISC and ISB? I'll start by saying a 2000rpm topout on the bigger boys sucks! Why do they do this.

Here is a something I found on cummins website Cummins reveals the secrets to better MPG" (http://www.cummins.com/na/pdf/en/products/truck/Fuel_Econ_for_web.pdf)

Dodge Cummins 5.9 HO = 1166#

Ford Powerstroke 7.3 = 1050#

Chevy Duramax 6.6 LB7 = 836#

Ford V-10's 650 lbs

701# for the 6.2

6.5 marine version weighs 887 dry

Hummer manual has the 6.2 & 6.5 @ 650lbs dry.

Cummins manual has the V-pump @ 850 (non-turbo)
880lbs (turbo'd) dry,
P-pump @905lbs dry

Cat makes great construction equipment, and good motors, as long as it displaces over 1000 cubes.

Cat's OTR engines range from marginal to horrible.

I have to call bullshit on that comment. We have three Pete 362's, C-15 CAT @ 500hp, 18 speeds, and brakesavers and haul triples over 110,000 gross combined weight every day. I wouldn't even attempt that with any other engine, a neighbor has a Cummins 600 and we can pass him on any hill. Plus he has to do brake jobs twice as often as we do. If it doesn't say CAT, it ain't worth running in my opinion.

Two of our lift trucks have 3208's and they will start when the other lift with the 460 won't, that's with 8,000 hours on the hourmeter too.

As a bit of useless trivia knowledge I'd like to have based on the quoted post... I was wondering if the naming convention for the detroit diesels was how the naming convention on 4 stroke superchargers was created. IE a 6-71 supercharger pumps the same amount of air as a 6-71 detroit diesel blower? Just wondering.


yes, back in the early hot rodding days, thats exactly where the blowers came from. Guys yanked the blower off a 8-71 detroit, and plopped it on a gas motor, with a pair of carbs up top. hense the name "8-71 blower"

Detroit made a 3 and 4 cylinder 71 series with an aluminum block. They were used in gamma goats in the military.

They also made some aluminum 12 & 16V71's. Stick that in your pickemup truck. :D

They also made some aluminum 12 & 16V71's. Stick that in your pickemup truck. :D

Really? Know where I can find info on this? I've heard alot of boat people really slander the aluminum diesels. Said that CAT has regretted every Aluminum block its ever made. But I'll have to learn the hard way.

Here is some info I stole just to make this thread a little more complete. I found a guy today that did a gas conversion on a 3208, i'm gonna try to get a hold of him just for kicks.

If you get ahold of this guy, post up. I'd have to ask him Why bother?

You'd have to destroke in order to get the compression ratio down to a managable 10:1 or so instead of the cat's normal 16:1, so less stroke, less torque. Who needs an 1800 lb 10.4L gas engine that cost an arm and a leg to adapt? Hell, the whole cylinder head would have to be custom cast just to get a spark plug in there. There are plenty of ways to get power, and this white elephant doesnt seem to be it. Complete waste of time unless he can shed some light on any supposed benefit.

I'm trying to track him down. I talked to a guy that worked for him. I think they tapped the heads for the plugs but could be wrong. It actually sounded pretty cool. But more of a "look what i did" kinda thing. You know some people- just like to waste money. I see how the fuel system on a 3208 would be good for gas but what about the cams. I think he must have had them custom made. I'll let you know.

If you get ahold of this guy, post up. I'd have to ask him Why bother?


one guys two sense on a converting a jimmy over: "And the bozo that did this let the motor vehicle dept know about it! He doesn't get to stay under the "radar" for smog checks, which is probably the only reason to do something like this."

one guys two sense on a converting a jimmy over: "And the bozo that did this let the motor vehicle dept know about it! He doesn't get to stay under the "radar" for smog checks, which is probably the only reason to do something like this."

I have no idea what the hell you just typed there, or what its relavence is to the previous thought of converting a diesel engine over to gasoline use for a vehicle which I'll say clearly this time, is a stupid idea.

LOL, What i said was in response to your "why bother" for converting a diesel to gas. He said the only reason to do it was to get past the smog testing. But i really wouldn't have any idea about that because Cali is the last place on earth i would live. (oh shit) I wouldn't want to really convert one over either- but i would like to know what the people who have learned in the process.