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Old 08-03-2014, 04:48 PM   #1
04subielover
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Default Help decide CR radio with hybrid on corn

We'll I'm in the process of ordering 99.75 pistons for my hybrid. Either working my head if they are good or working a set of v5 or v6 heads. Will have sti kelford 276/272's with Avcs plugged (got them cheap) either a gtx3076 or precision 5858 on e85 all the time. Will be mostly my daily and looking at Manley pistons with turbo tuff rods. Wondering what CR should I go with. Was thinking maybe 9.8.1. Give me your opinions


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Old 08-03-2014, 05:44 PM   #2
Bariga
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keep it stock, subarus dont like high comp ratios.
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Old 08-03-2014, 06:02 PM   #3
DisoDisp
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I beg to differ:

Do go higher.

I'm running 10:1 on @ 8374 at 34psi showing 740whp on VD.

Seen cars runnign up to 13:1 on corn making power.
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Old 08-05-2014, 09:33 AM   #4
04subielover
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Any other input? Was jw cause doesn't a head matched hybrid still bump up the cr?
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Old 08-05-2014, 11:35 AM   #5
2Fast4U1DAY
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Quote:
Originally Posted by 04subielover View Post
Any other input? Was jw cause doesn't a head matched hybrid still bump up the cr?
No it does not bump the static CR, it LOWERS the static CR because you are opening up the cc's of the combustion chamber to a larger volume.
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