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F20C1 converted to a F20C

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Old May 2, 2006 | 02:37 PM
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  #21  
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Trip
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There are 3 variants of the F20C engines.

F20C Japan (JDM)
F20C1 US
F20C2 Euro

From my little knowledge only the JDM has different internals, and that
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Old May 2, 2006 | 02:41 PM
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Remember, US octane is not the same as Euro or Japanese ratings. RON vs (MON+RON)/2 that is used in the US.
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Old May 2, 2006 | 02:47 PM
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Originally Posted by brent_strong,May 3 2006, 12:41 AM
Remember, US octane is not the same as Euro or Japanese ratings. RON vs (MON+RON)/2 that is used in the US.
Well said. IIRC local fuel is (85+95) /2 = 90.

European countries have 95 and 98 fuel. I do not know if its calculated the same (MON+RON)/2
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Old May 2, 2006 | 02:58 PM
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IIRC, Euro just uses RON, by standard. Could be different among countries or regions though.
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Old May 3, 2006 | 09:05 AM
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its not the pistons changing the CR. The JDM head gasket is thinner.
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Old May 3, 2006 | 10:29 AM
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Originally Posted by Squeezer,May 3 2006, 07:05 PM
its not the pistons changing the CR. The JDM head gasket is thinner.
Could be too. I do not have any verification what makes the JDM 11.7CR.
It would have to be a very thin gasket to increase CR by 0.7.
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Old May 3, 2006 | 10:41 AM
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Originally Posted by Squeezer,May 3 2006, 06:05 PM
its not the pistons changing the CR. The JDM head gasket is thinner.
Can you substantiate that?
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Old May 3, 2006 | 11:41 AM
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Originally Posted by s0rted,May 3 2006, 12:41 PM
Can you substantiate that?
search for jdm head gasket
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Old May 3, 2006 | 02:09 PM
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Originally Posted by Squeezer,May 3 2006, 09:41 PM
search for jdm head gasket
I did run a search in here and its seems to be biased to both options

I did a further search and from my understanding it
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Old May 4, 2006 | 12:58 PM
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Originally Posted by Squeezer,May 3 2006, 08:41 PM
search for jdm head gasket
Check out what Trip just said.
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