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I have the same problem with the motor thats in my truck now its an 91 block with a shaved 20r head on it. I was hopeing that with a 82 block and a not shaved 20r head that i wont run into the same problem cause 92 octane is to expensive.
nope but iv always wanted to try putting one on cause it shure feels like somethings not right. So kyle if i put the 20r head on the 81 block the compression wont change any? I was hopeing it would come up a little bit. Now you got me thinking if i should just stay with the 22r head since it does have biger valves and i am after more low to mid range power.
the compression on that 91 block and 20 head has got to be close to 12:1
nope, 20R on 81-84 22 is a jump from 8.5 to 1 compression ratio to 9.5 compression, regular gas is fine for under 10.1 with the proper cam, the higher the compression ie over 10:1 you need more duration so as to overlap the valves at low rpm'sthe compression on that 91 block and 20 head has got to be close to 12:1 get 89 octane and dump some octane booster in each tank, cheaper that way oh and Kyle, my run to see the Mammoths was my first trip and the engines "break in run" and i got 19.5 miles per gallon so the hybrid can get good mileage also
go on........
um where the edge of the 20 r headgasket would fit between the 20 head and 20 block, when using a 22 block and headgasket it leaves a kinda sharp edge around the bowl of the head, just smooth that edge a little with a dremel, or even a small file, to prevent that edge from glowing and causing detonation, helps to run the cheaper gas, you dont want to cut it down to fit the 22 gasket cause then you might as well use the 22 head
ok i have a 22re motor an i was wondering if i should do the hybrid or should i just keep the re.also does it have to be the 22r block an 20r head or could it the other way around
i know you cant use the 22re head. what i meant was should i pull it out an put in a hybrid.i have a cam but not sure if it is good it an 271 pro comp an downy headers
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