Head Questions? Swap 22r 20r etc
12-26-2011, 01:18 PM
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Head Questions? Swap 22r 20r etc
Can i put a 22r head on my 20r my 20r head had little closed in like areas in the valve chamber and the 22r doesnt is it ok to use the 22r head?
12-26-2011, 01:36 PM
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What year 22r? The 20R head is a popular swap onto the 22r (as long as it's the right year 22r) But doing so in reverse will lower your compression ratio. By how much I don't know. But.... you will have to use the 22r intake manifold and carb. The 20r stuff won't fit it. Exhaust manifold IIRC will though.
12-26-2011, 01:50 PM
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im doing so in reverse 20r block 22r head and it looks like it would have less compression but if that an the 22r intake an carb are the only issues id still do it
12-28-2011, 05:11 PM
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20r heads will interchange with 81-84 22r heads, 85 heads are closed chamber as well as being shorter by .200" so you can use whichever head you like, but you must use the intake that matches the head, they do not interchange.
12-28-2011, 05:47 PM
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I run a 22R with a 20R head currently. It makes a 22R a beast, not to mention the cam I have in the motor. It seems like putting a 22R head on a 20R would reduce the current performance of the motor. Can't say I've ever heard of anyone doing it. If you do decide to do the 22r head on a 20r block, be sure to let us know how it works out.
12-28-2011, 06:29 PM
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The 20R head breathes better then any 22R head, why do you want to make this change? I run a modified 20R head on a stroked 22R block and it really produces HP.
12-29-2011, 04:02 PM
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i have an 80 toyota and my 20r motor seized...i really want a 22r..can i swap it without changing the ecu? ive heard there isnt an ecu for 20r and ive heard they r the same and different..but im about to do so i just need to know if its possible i dont have extra money to swap out other things right now i just need my truck running
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12-29-2011, 05:25 PM
#8
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show me the flow numbers. that is such a false statement. the intake ports on a 20r are tiny compared to any other 22r head
12-29-2011, 05:59 PM
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Reason being for the 22r head on the 20r block was due to a valve gettin hit by a piston when the valve stuck and it broke the guide thats made to the head for the valve
12-29-2011, 06:16 PM
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Im really not looking for any kind of outstanding performance im jus lookin for a driveable motor and some occasional recreational mud fun will there be any huge negative imoact by running this 22r head?
12-30-2011, 05:16 PM
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Well just to let everyone know so far its doin great got it put on today and runnin . . runs like it did with the 20r head cant rly tell a difference at all.
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