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Ok I need to build a motor quick. I have an '81 22r with a bad head and good bottom end, and a 20r with bad bottom end and good head. How hard is it to get these two together, anything to look for? The 22r has the double roller timing chain, so that should hook up to the 20r cam gear, right.

Any help is very much appreciated!
 

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Originally posted by EricFJ40:
<STRONG>Ok I need to build a motor quick. I have an '81 22r with a bad head and good bottom end, and a 20r with bad bottom end and good head. How hard is it to get these two together, anything to look for? The 22r has the double roller timing chain, so that should hook up to the 20r cam gear, right.

Any help is very much appreciated!</STRONG>
FWIW, I've heard this is a common swap for performance gains. Try a search on this and other sites, I've seen write up's on it (maybe on the ORC site?)
Good luck
 

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I have a '84 22R block with a 20R head. U will need all of the intake and exaust BS from the 20R. The head gaskets are the same ( I beleive).

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