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Discussion Starter · #1 ·
does anybody know what the engine compression ratio is on a stock 92 22RE?
 

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9.5 to 1. off-road.com used to have some info on toyota history, etc. trannies, diffs, engines, etc. but I must be blind cuz I can't find it.
 

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Discussion Starter · #6 ·
thanks fella's I was just wondering what it was compared to the SBC 355 my buddy and I put in his sand dragger, I guess his 12.5:1 wins!
 

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If he is running pump gas with 12.5:1 compression those poor pistons aren't going to last very long....pre-detination is a very bad thing. I have a set of pistons out of my old Sprint car that I could show you.....bad...very bad...
 

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Originally posted by Priest:
<STRONG>If he is running pump gas with 12.5:1 compression those poor pistons aren't going to last very long....pre-detination is a very bad thing. I have a set of pistons out of my old Sprint car that I could show you.....bad...very bad...</STRONG>
Actually, they can last just fine if the combustion process is right (timing, even flamefront, no hot-spots, etc). There was a VW Rabbit Pickup at Bonneville salt flats that a friend was running, 15:1 using stock internals & he used pump gas, & drove it on the street to test it. My motorcycle is running 11.1:1, & it's no new technology thing. That said, I have seen 8.5:1 compression motors melt pistons due to detonation, so you point is totally valid, just isn't due 100% to the copression ratio.

Greg
 

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Actually, they can last just fine if the combustion process is right (timing, even flamefront, no hot-spots, etc). There was a VW Rabbit Pickup at Bonneville salt flats that a friend was running, 15:1 using stock internals & he used pump gas, & drove it on the street to test it. My motorcycle is running 11.1:1, & it's no new technology thing. That said, I have seen 8.5:1 compression motors melt pistons due to detonation, so you point is totally valid, just isn't due 100% to the copression ratio.

Greg
I realize that timming and heat accumulation are also key factors. Also remember that that California has reformulated gas that is far poorer quality than the rest of the country. I have seen street cars run 11.5:1 without many problems. It seems like once you get over that threshold things get sketchy. I would be very interest to see how he was able to run 15:1 on pump gas. I just don't see how the thing would do anything but diesel and grenade. My sprint motors ran 16:1 on methanol and I had to use 110 octante gas to pickle the motors.
 

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Discussion Starter · #10 ·
no, this car doesn't drink regular gas, we put 112 or 114 octane aviation fuel. With $7000 in parts on/in the motor, the only thing still having GM on it being the block and crank, it deserves champagne, not wine in a box! <IMG SRC="smilies/wink.gif" border="0">
 

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Originally posted by toylet:
<STRONG>no, this car doesn't drink regular gas, we put 112 or 114 octane aviation fuel. With $7000 in parts on/in the motor, the only thing still having GM on it being the block and crank, it deserves champagne, not wine in a box! <IMG SRC="smilies/wink.gif" border="0"></STRONG>

OH please...... tell me where i can get av-gas anymore?
 

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Discussion Starter · #12 ·
Glendale airport, in Phoenix, AZ, 107th Ave and Glendale Ave. Manzanita raceway in Phoenix. An engine rebuilding shop on Grand Ave in Phoenix that has 2 Phillips 76 pumps, one with I believe 100 and the other with 114 octane. So thanks for asking, some of us know some that some don't! <IMG SRC="smilies/smile.gif" border="0">
 

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Man Child
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I don't know of any place in the bay area that you can get "Av gas" anymore although I am sure that there are some. But some of the 76 stations do carry 110 octane unleaded race fuel.
 
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