CA 91 octane and 11:1 CR ?
06-11-2005, 10:19 AM
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CA 91 octane and 11:1 CR ? Is there anyone out there running around 11:1 compression and using 91 octane? If so, have you experienced any problems with detonation, pinging, etc.?
Hopefully will be buying heads soon and am still undecided if I want to get them milled or not for increased CR.
Thanks for any replies.
Brian
Hopefully will be buying heads soon and am still undecided if I want to get them milled or not for increased CR.
Thanks for any replies.
Brian
06-12-2005, 08:30 PM
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Originally Posted by Rick@Synergy
I have done up to 11.5CR with 91 and no problems. ITs in the tune and the camshaft.
Rick
Rick
The cam I have now is the TR220 on a 114 LSA. Do you think there is enough overlap with this cam to support 11:1 CR assuming a good tune?
Thanks.
06-12-2005, 10:32 PM
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Overlap has nothing to do with compression. Its all about valve event timing. When does the intake valve close is what you should look for. That will help with the higher compression.
Rick
Rick
