I am thinking of putting headers on a 2F.

Advantages disadvantages?

Taking suggestions on makes and models... Man a Free or Sor or others... Six into one or two threes? What else is involved than just the bolt up? What about the intake manifold is there some thing there I need to pay attention to?

The exhaust issues I guess I'll discover as I go along... Most of the smog stuff is gone from the engine. It passed inspection this years due to a carbuator overhaul and a catalytic converter welded into the exhaust sytem before the muffler. It's ugly but it seems to work.

All advise is welcomed advice...

Joe

Do a search on Ih8mud yu'll find lots of usefull info on headers. Or call MArk at MArks off Road and Order one from him. FYI, Call after 1 pm.

I did it when I had a small crack - in my opinion, NOT worth it. I didn't really notice any bennefit regarless of claims made by Downey/SOR/MAF/etc. The biggest downside is poor cold performance unless you put on some type of fluid riser to warm up the intake manifold.

I did it when I had a small crack - in my opinion, NOT worth it. I didn't really notice any bennefit regarless of claims made by Downey/SOR/MAF/etc. The biggest downside is poor cold performance unless you put on some type of fluid riser to warm up the intake manifold.


I agree.
Header not really worth it IMO on F/2F, leaky,not going to get much "performance" out of F series motor anyways. I would not waste my money. Just my 02 I think you may get different opinion out of some here:D

The only people I've met who've been truly disappointed with the header conversion are those whose motors were already too tired to take advantage of the benefits of a header, or those who could not modify the rest of their engine components to optimize the header. In neither event would the header be at fault.

The two drawbacks to the headers are cold climate [as mentioned] and noise [compared to cast iron stock exhaust manifolds]. I've outlined the advantages on the FAQ page of my website if you're interested.:) Tri Y all the way!

BTW, it's hard to take seriously the opinions of guys who've tried the header out for the equivalent of a two minute pit stop on their way to a V-8 conversion.:shaking:

:flipoff2:

Generally you want a tri Y setup, It will give you the near stock bottom end.


Headers will allow additional power at higher RPMS not lower by design. That being said, If you have a heathy motor you will feel the difference between the two when accellerating. Wheeling you wont feel it much.

What other engines mods are necessary for the headers to work properly, besides buying them from MArksOffRoad? Some folks have suggested using two gaskets to avoid leaking... how do you solve the "cold "question- Idaho does get cold-not below zero, but still cold... I've heard of sometype of plate that might help..

How much more engine noise?

Someone else has written that SOR, MAF, Downey's no longer talk about improved performance with the addition of headers.. What's your take on this?

With a refreshed 2F it does seem that headers would improve the performance- I am not looking for it to rival a 350. My J40 is my DD, more highway, someoff road- not serious rock stuff.

Also what's this I read of people actually doing 75 in a 40? My 40 came in from Panama- I don't know how it got there... but 65 is absolute tops and that's intersate-flat with tail wind- tires 31X10.5X15...not that large. Perhaps it is rear end issue. I am hoping the refreshed engine will take it up a couple of mph's, 65 would be nice without blowing everything apart.

thanks for the input looking forward to the response

Joe

BTW, it's hard to take seriously the opinions of guys who've tried the header out for the equivalent of a two minute pit stop on their way to a V-8 conversion.:shaking:

:flipoff2:



Hey Mark 1972 just called they want their F Motor back:flipoff2:

Dont forget to mention Fuel Injected V8, just making the Land Cruiser (best rig built) that much better IMO and technology thats some what upto date. But if a headder makes you feel up to date then by all means:D
Just a friendly debate:)

Hey Mark 1972 just called they want their F Motor back:flipoff2:

Dont forget to mention Fuel Injected V8, just making the Land Cruiser (best rig built) that much better IMO and technology thats some what upto date. But if a headder makes you feel up to date then by all means:D
Just a friendly debate:)
Aww Justin...


Excuuuuse me while I whip this out!!!

;)



A header helps considerably on a 2F. As long as you do a 2.5" exhaust as well.

A engine swap is costly.. I don't care who you are. Some mild performance mods will never equal a LS6 but hell, they are cheaper..
I have had GREAT luck with the Tri-y headers...

Aww Justin...


Excuuuuse me while I whip this out!!!

;)

...

AHHHH a little "Blazing Saddles", ""tell me shewiff, is it twue what they say about you people?"

Looking at the turbo on the 2F


"It's twue!!! It's twue!!!!!"







:flipoff2:

Looking at the turbo on the 2F


"It's twue!!! It's twue!!!!!"







:flipoff2:

Well put:). Just brought it up for some debate. Like I said, Just My O2.

2F is kinda like Mongo:D

The movie so nice, you have to say it thrice....



:flipoff2:

mongo love F toyoda

I put some on my last 40 a long time ago. The engine was very healthy and well tuned and it did make a slightly noticiable power increase mostly on the highway. I think they were the cheap MAF headers (this was 6 years ago). The problem was, as everyone highlights, as soon as it became remotely colder (fall) it started running like ass and we installed the MAF heat riser kit and it made an immediate difference back to normal. The increased mileage claims are BS though IMO. They did make a difference when we had a Weber 38/38 dumping fuel down the engine, seemed like the 2F could handle it better but we were pushing 6-8 mpg tops regardless. In Boise I'd say you will need the heat riser and it increases the installation cause you have to start messing with coolant.

I had both a stainless Manafre, and a steel unknown mfg header on mine for years. Both were way loud and put off alot of heat. I would not do it again.
It seemed like I was always tightening the nuts and replacing gaskets. They do make some header studs with some special locking bolt that I wish I had used. I used regular studs, nuts, lock washers and they would loosen.
I had alot of trouble keeping them from leaking too. Tried every kind of gasket I could find. The kevlar and paper ones, single, stacked, did not ever help. I like the steel ones the best, though forget where I got them from. I also tried cutting the tabs to seperate the cylinders from each other, but that did not help either.
Prob a combination of bad headers and an incompetent header mechanic (me), but its something to be weary of. Leaky exhaust leads to burned valves, which leads to #6 cylinder giving it up, which leads to Chevy conversion. :)

-Dustin

the chevy conversion did not solve the problem tho did it .

F motor only one who ever whup Mongo

[What other engines mods are necessary for the headers to work properly, besides buying them from MArksOffRoad? Some folks have suggested using two gaskets to avoid leaking... how do you solve the "cold "question- Idaho does get cold-not below zero, but still cold... I've heard of sometype of plate that might help.. ]

I use a steel faced gasket with large crush rings on all the ports to help compensate for irregularities in mating the two manifolds to the engine

[How much more engine noise?]

With no leaks and a properly tuned engine, it's a little more noisy, but not a lot. If your idle mixture or timing is off by more than 10%, it makes quite a bit more noise than that.

[Someone else has written that SOR, MAF, Downey's no longer talk about improved performance with the addition of headers.. What's your take on this?]

Part of that impression may be due to the fact that on forums like this, most of the focus is on slow speed rock crawling, where headers really don't make much difference. Where they shine is in moving large volumes of air, which is going to be at highway speeds.

[With a refreshed 2F it does seem that headers would improve the performance- I am not looking for it to rival a 350. My J40 is my DD, more highway, someoff road- not serious rock stuff. ]

]Also what's this I read of people actually doing 75 in a 40? My 40 came in from Panama- I don't know how it got there... but 65 is absolute tops and that's intersate-flat with tail wind- tires 31X10.5X15...not that large. Perhaps it is rear end issue. I am hoping the refreshed engine will take it up a couple of mph's, 65 would be nice without blowing everything apart.]

I can get 70 easily with my 1bbl Aisan carb in my DD on 32s; I am sure I've gone 75 or better with the 2bbl in my 68 on 33s. Both run very smooth at high rpm because both were professionally balanced when they were rebuilt. I've done 80 in one of the 2Fs I rebuilt without a hint of effort from the engine; again, professionally balanced. Get the hint?

[thanks for the input looking forward to the response]

Joe


:)

What other engines mods are necessary for the headers to work properly,

Joe

Start with an engine that has a good intake manifold and combustion chamber design that puts out maximum power above 6,500 RPM. A chrysler hemi or big block chevy come to mind. Headers give you the most improvement when the engine moves a large volume of air and when the exhaust manifold is the bottleneck or limiting factor to moving air. The F/2F does not satisfy this criteria.

On a F/2F you won't have much bang for your buck and you may have to contend with cold starts, leaks and engine compartment heat issues.

My 2F has had a header on it (MAF style) since before I bought it 5 odd years ago.

I don't have any problems with leaks, loosening manifold bolts, cold starts, or any other of the issues stated.

However, I can't comment if it's made a difference in power because I've never had the stock exhaust manifold on the truck. :D

Headers will help a little.
A cam will help a little.
Headers + cam help a LOT!

Check it out :D



<=====

the chevy conversion did not solve the problem tho did it .
heh :flipoff2: Diff hitting the crossover led to ramshorn breaking. :D Fingers crossed its solved now.

At the entrance to the Hammers:
A sign states "the LePetomaine Thruway"

Jack Rice responds " What will that asshole think of next?" "Now someone's gotta go back and get a whole shitload o dimes!"

Derek Trent and Tom Wayes say " "Fuck this" and blow the toll gate and the town of Rockridge is saved!!

Sorry Jack, but you'd make a great Slim Pickens and Tom and Derek scream Cleavon Little and Gene Wilder! Don't know which one's black though, if it matters!!

It's Late