- Thread starter
- #161
Much appreciated! Even just having you and other folks chime in here has been a aupport group of sorts.
About 2 months ago I was ready to sell it all as parts truck and move on with my life.
Builds Build: Rusty Pumpkin Project 74' FJ40 (1 Viewer)
- Thread starter bdawg23
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
About 2 months ago I was ready to sell it all as parts truck and move on with my life.
Wow…I hope that clearer heads prevailed…I understand those frustrations. Certainly harder when every turn you take hits you with another brick. Pm if that helps, anytime
- Thread starter
- #163
Installing the intake and exhaust tonight and I’m already stuck.
The exhaust header bolts aren’t lining up.
Intake Manifold fits ok (I have 3 of them, this one fit the best). Of course it’s the one I didn’t prep for install so it looks like crap.
Any thoughts on what to consider? Should I just buy some headers for this thing?
The exhaust header bolts aren’t lining up.
Intake Manifold fits ok (I have 3 of them, this one fit the best). Of course it’s the one I didn’t prep for install so it looks like crap.
Any thoughts on what to consider? Should I just buy some headers for this thing?
Pic 1 it just looks a little low to me. Cast iron manifold. Steel header. My cast iron manifold cracked in half - I was given a free header. I made longer studs. custom brass stepped washers to make up for the different thickness and used 2 header gasket install wet. Also used stainless steel nuts with high temp anti seize compound. First I planed the header and intake on a big piece of glass to get them flat. I torqued it in sequence by 1/3 cold. then ran a few heat cycles and then re-torqued again 100%. Later built a fluid heat riser to cure carburetor icing.
If the gasket you are using between the intake and exhaust manifolds is too thick it will cause them to misalign like that.
I always have that problem with Remflex gaskets, I never use the one that they provide between the intake and the exhaust, just use the one from the manifolds to the head
I always have that problem with Remflex gaskets, I never use the one that they provide between the intake and the exhaust, just use the one from the manifolds to the head
- Thread starter
- #166
Thanks for sharing, the truck isn't close to running so heat cycles are not an option yet. Good reminder to use some anti seize compound and consider alternate hardware if needed.
I think the root of the issue (at least one root, there may be more) is the hardware. The 2F using M12 studs and the F uses M10. The extra play around the holes is gone with the M12 studs which doesn't let me know shift the manifolds around to align them.
I figured this out last night when I put the header onto the F block and it fit (with a little persuasion).
- Thread starter
- #167
Good thought. Are you referring to the heat riser gasket that goes between the intake and exhaust manifold?
Yes
- Thread starter
- #169
Thanks!
I purchased this gasket and it seemed pretty thick to me but I've never see a new one so I didn't have a prior reference. Seems like it could be contributing to the mis alignment for sure.
- Thread starter
- #170
for anyone interested in watching I finally put together the next episode for the build. It covers the install of the water pump, radiator, fuel pump, transmission, front brake lines inside the engine bay and a few other small projects around the truck.
Rusty Pumpkin Episode 5
Rusty Pumpkin Episode 5
Yes that is your problem, that is a remflex gasket and it is around 2x as thick as the stock one.
Like I said, the big one is great between the manifolds and the head, but that one from the kit cannot be used between the intake manifold and exhaust manifold, too thick.
You have to find an OEM one
Like I said, the big one is great between the manifolds and the head, but that one from the kit cannot be used between the intake manifold and exhaust manifold, too thick.
You have to find an OEM one
- Thread starter
- #172
Thank you! I’ll track one down.
- Thread starter
- #173
Alright, also turns out the F intake and manifold I have aren’t the best fit. I assumed they would be the same as a 2F but apparently there are minor changes. Ordering 2F model year appropriate manifolds to see if that fixes the problem.
Even with the gaskets removed the bolts still don’t line up well enough to mount.
- Thread starter
- #174
Alright, quick update.
Turns out I had an F exhaust manifold and there are some slight differences for a 2F exhaust manifold.
I figured they were same (F vs 2F) but it seems this only true for the intake manifold.
My next step is either:
- purchase a 2F intake and exhaust manifold
- use my F intake manifold and purchase aftermarket headers
Seems like the 3FE headers also fit but I don’t see any point in going that route.
I’m not worried about keeping it factory, that went out the door when I swapped to a 2F.
Any other thoughts here that folks want to share?
Shopping for headers seems a lot of the brands that offered headers have since discontinued them.
Turns out I had an F exhaust manifold and there are some slight differences for a 2F exhaust manifold.
I figured they were same (F vs 2F) but it seems this only true for the intake manifold.
My next step is either:
- purchase a 2F intake and exhaust manifold
- use my F intake manifold and purchase aftermarket headers
Seems like the 3FE headers also fit but I don’t see any point in going that route.
I’m not worried about keeping it factory, that went out the door when I swapped to a 2F.
Any other thoughts here that folks want to share?
Shopping for headers seems a lot of the brands that offered headers have since discontinued them.
Jim S.
SILVER Star
I had a Downey Header on my old 2F and really liked it. wngrog uses a lot of headers on his customers trucks.
