I was just at a friend of mines shop and he has a old 22r he said I could have. I noticed it had a duel timing chain and round exhaust ports so it must be a pre 85. The motor mounts appear to be the same on my current motor. I have a 92 pickup 22re. Is it possible to put the newer style fuel injected head on a old block?
well that sucks. How can I tell the difference between a old 22r and a 20r? Do I have to pull off the intake manifold and look at the intake ports, or is there another way?
The older head flows better and can potentially make more power than the new style. The EFI manifold will not bolt on without seriously modding the head, manifold, or both. It has been done though. The easiest thing to do is go carb on the old engines. Another option would be to adapt a junkyard TB injection setup to a carb manifold and run it with Megasquirt. Read through the tech info here, and you too will be a 22R guru.
You can do it but you will have to get a 83-84 head that has enough bolt holes for the EFI. I can't remember but I can go out in the shop and count the holes in the heads.
Cylinder Head Identification: 1975 - 1980 20R Cylinder Head Round Intake Port Round Exhaust Port 80/81 C.C. Chamber Intake Valve Diameter 43mm Exhaust Valve Diameter 35mm 1981 - 1984 22R Cylinder Head Square Intake Port Round Exhaust Port 82/83 C.C. Chamber Intake Valve Diameter 44.5mm Exhaust Valve Diameter 36.5mm 1985 - 1995 22R-22RE Cylinder Head Square Intake Port Pear Shape Exhaust Port 52/54 C.C. Combustion Chamber 82/83 C.C. Chamber (Turbo) Intake Valve Diameter 44.5mm Exhaust Valve Diameter 36.5mm More information can be found on LcEngineeering website!
