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b18c5 CR?

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Old Feb 19, 2003 | 07:55 PM
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Default b18c5 CR?
Is the CR of a b18c5 block with CTR pistons and a b16 head around 12:1CR. any help would be great.
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Old Feb 19, 2003 | 08:15 PM
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Default Re: b18c5 CR? (Racerj404)
little higher like 12.3-12.5:1
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Old Feb 19, 2003 | 08:25 PM
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Default Re: b18c5 CR? (Casey)
is this safe on 92oct? will buy hondata soon also.
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Old Feb 19, 2003 | 08:29 PM
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Default Re: b18c5 CR? (Racerj404)
Compression is 12:4-12.5. It is safe w/ hondata IF it is tuned correctly.
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Old Feb 19, 2003 | 08:30 PM
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Default Re: b18c5 CR? (Itr00-1374)
yes, as long as it is tuned correctly. I was running ctr pistons in my c5 in addition to a mugen head gasket on stock ecu with fpr and vafc. slight knock at partial throttle due to no partial throttle tuning
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Old Feb 19, 2003 | 08:41 PM
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Default Re: b18c5 CR? (Itr00-1374)
i got 11.751778779507741:1 cr with OEM gasket @ http://www.c-speedracing.com/howto/c...c/compcalc.php
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Old Feb 19, 2003 | 08:44 PM
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Default Re: b18c5 CR? (10K2HVN)
its wrong
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Old Feb 19, 2003 | 09:21 PM
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Default Re: b18c5 CR? (Casey)
well..if its wrong its wrong....
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Old Feb 19, 2003 | 09:24 PM
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Default Re: b18c5 CR? (10K2HVN)
it is(wrong that is)


[Modified by Casey, 6:24 AM 2/20/2003]
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Old Feb 19, 2003 | 09:44 PM
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Default Re: b18c5 CR? (Casey)
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Old Feb 19, 2003 | 09:57 PM
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Default Re: b18c5 CR? (10K2HVN)
thats correct. i run those setups quite often and the compression ratio calculates to about 11.56:1 with stock mill on the head and stock gasket.
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Old Feb 19, 2003 | 09:59 PM
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Default Re: b18c5 CR? (LuckyRacing)
its not that low.
you need to take the compression height into account
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