Mark W
Yep, I really don't really care that much I guess.
Why would you want to ditch the EFI?????
Mark...
Mark...
intake manifold variations (FAQ) (1 Viewer)
- Thread starter 65swb45
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Another difference to be noted is the spacing on a 1F versus 2F manifold for aircleaner placement.
I have a F155 engine. I had changed the valve cover over to a aluminum cover. I was running a Holley but decided to change back over to an Aisan carb. I sourced a 1977 carb and matching aircleaner. The carbs will all swap. I assumed the aircleaner would bolt right up also.
However the spacing of the intake is different. I had to move the aircleaner assembly away from the carb, and drop it down in order for the aircleaner and airhorn to mate up. I made custom brackets for the mounts to the valve cover and simply shimmed the large mount to the head on the distributor side of the engine. I also had to enlarge the depressions on the under side of the cleaner to clear the valve cover nuts.
I assume the 1F's had a similar spacing. But the distance from the block and height of the carb difinetely changed for the 2F's. I also have noticed the visible difference of the air cleaner in a FJ-60, compared to the 77 model and the possiblity that the dimensions of the later 2F's may be different. Does anyone know?
I have a F155 engine. I had changed the valve cover over to a aluminum cover. I was running a Holley but decided to change back over to an Aisan carb. I sourced a 1977 carb and matching aircleaner. The carbs will all swap. I assumed the aircleaner would bolt right up also.
However the spacing of the intake is different. I had to move the aircleaner assembly away from the carb, and drop it down in order for the aircleaner and airhorn to mate up. I made custom brackets for the mounts to the valve cover and simply shimmed the large mount to the head on the distributor side of the engine. I also had to enlarge the depressions on the under side of the cleaner to clear the valve cover nuts.
I assume the 1F's had a similar spacing. But the distance from the block and height of the carb difinetely changed for the 2F's. I also have noticed the visible difference of the air cleaner in a FJ-60, compared to the 77 model and the possiblity that the dimensions of the later 2F's may be different. Does anyone know?
I sold the electronics from my project 62, leaving me a 3fe short block.
Now that I think about it.......
My question should have been will a 2f head bolt on to the 3fe block.
Then any 2f intake would work. The reason for the question is because
I know where there is a 66 fj40 that needs an engine rebuild.
I was considering using the 3fe long block with a 2f intake/ carb in the 66 instead of rebuilding the f in there now.
It is just a matter of putting what I have to use.
It would have bolted right up if you had used a 2F intake. I did the same thing on my F155. But you figured out a way to make it work anyway. More than one way to skin a PitBull, eh?
Ed
Mark W
Yep, I really don't really care that much I guess.
If you don't have the EFI, a 2F is a better motor than a 3F.
2F head will bolt onto a 3F bolck. Make sure you use a closed chamber head or you compression wil suffer.
Mark...
Are there any fitment issues with the wide runner manifold and your average F/2F header?
I've been wondering for a while.
I've been wondering for a while.
Snail, I did a try-fit while my motor was on the engine stand and it looked like it would fit my SOR headers(3 into 2 into1) with little or on grinding. Someone else had a post on here, maybe AndrewFarmer(?), and he had to do a fair amount of grinding to get it to fit his headers. I don't remember what headers though.Sorry, not much help
Ed
Ed
Mark W
Yep, I really don't really care that much I guess.
Depends on the header I'd imagine. I've put four of these combos on and while there may have been minor adjustments, nothing that was enough to remember. But one or two guys here have reported more trouble.
Mark...
Mark...
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The last time I tried to fit a wide runner intake to one of my Tri-Y headers, it would not work. It needed more header dimpling and manifold grinding than I was prepared to do.
The owner of the cruiser had originally bought the header and took it to a muffler shop to have it installed. They paid no attention to the fitment issues and promptly warped ALL the ears on the intake manifold trying to tighten it down!
This is why I ALWAYS do a dry run on header installs.
Best
Mark A.
It needed more header dimpling and manifold grinding than I was prepared to do.The owner of the cruiser had originally bought the header and took it to a muffler shop to have it installed. They paid no attention to the fitment issues and promptly warped ALL the ears on the intake manifold trying to tighten it down!
This is why I ALWAYS do a dry run on header installs.
Best
Mark A.
Mark W
Yep, I really don't really care that much I guess.
Warped the ears on the intake manifold? I would have thought that they would crack.
Mark...
Mark...
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Me too. They were between 1/8 and 3/16th in from the main 'face' of the manifold, but they were not cracked. I'm not sure, but I might have given the manifold back to the customer. I'll ask him next time I see him.
PabloCruise
SILVER Star
x2...
I wonder if a 2f with TBI would benefit from the wide runner manifold?
I had to do some minor grinding/smoothing when I switched from SOR headers to MAF's.
I plan on a TBI conversion next summer, and am going to try it with the wide runner one I currently have on there. Though I do have the narrow runner one still sitting on the shelf.
I plan on a TBI conversion next summer, and am going to try it with the wide runner one I currently have on there. Though I do have the narrow runner one still sitting on the shelf.
Old thread, I know but a related question: if you look at the pictures
above of the two intake manifolds, you'll see the four holes for
the carb mount - plus a fifth hole. What is supposed to go into
that fifth hole? Should it be plugged?
-Phrog
1972 FJ40
1988 FJ62
above of the two intake manifolds, you'll see the four holes for
the carb mount - plus a fifth hole. What is supposed to go into
that fifth hole? Should it be plugged?
-Phrog
1972 FJ40
1988 FJ62
PabloCruise
SILVER Star
Great to see this thread back!
I have a leak between my intake and exhaust on my '78 2F.
I inherited an intake/exhaust off a 60 that I could replace the gaskets on and drop in my '78 40 if:
1) the exhaust is the same
2) My EGR will fit to the later manifold.
Can anyone answer my questions or post pictures showing the two different EGR connections?
The “fifth hole” is used to secure the intake manifold to the exhaust manifold. It is a through-hole, does not, and should not be in the plenum of the intake manifold, and there is no reason to plug it when using this manifold with a header configuration.
Why do you want to swap it out?
Your 1978 exhaust manifold should be the three-piece design, giving you the same advantages/problems as the later model you are looking to install.
I would have the intake and exhaust manifold to cylinder head mating surface trued at a machine shop, and run it.
Your current EGR system is not going to bolt up and work with the later model exhaust manifold.
Hope this isn't considered "Hijacking"; but ... to be clear ... I have a 4/75 FJ40 (2F); when I yanked it from the junkyard, it had working headers on it, and I left them there. I spent 4 years looking for a replacement exhaust manifold, because my understanding was that I HAD to get one from the period of (approx) 1/75 - 8(?)/76. I know that you started this thread about intakes, but, since they bolt together, + head bolt patterns; my questions are:
A) for a 4/75 2F .... what years (exhaust, and or both) Manifolds CAN I use;
B) Does it HAVE to be matched to any particular intake (or just be a matching bolt pattern); &
C) I caught the part about the intake performance differences above; but, any recommendations (based y'all's experiences) in reference to the exhaust manifold.
Thanks, and, again - my appologies if I should have started a seperate thread with this.
A) for a 4/75 2F .... what years (exhaust, and or both) Manifolds CAN I use;
B) Does it HAVE to be matched to any particular intake (or just be a matching bolt pattern); &
C) I caught the part about the intake performance differences above; but, any recommendations (based y'all's experiences) in reference to the exhaust manifold.
Thanks, and, again - my appologies if I should have started a seperate thread with this.
PabloCruise
SILVER Star
Why do you want to swap it out?
Your 1978 exhaust manifold should be the three-piece design, giving you the same advantages/problems as the later model you are looking to install.
I would have the intake and exhaust manifold to cylinder head mating surface trued at a machine shop, and run it.
Your current EGR system is not going to bolt up and work with the later model exhaust manifold.
My interest in swapping them was simply motivated by time. I was wondering if I could get the intake/exhaust off the 60 machined and rebuilt with gaskets between the two so I could do a simple Saturday afternoon remove & replace in the driveway vs. taking the 40 out of service for several days while I pull pieces, send them out for machining, reassemble the following weekend, blah, blah, blah.
It is hard for me to get much done in the evenings after work now that is dark and cold...
Thanks for the guidance!
