12:1 compression
Solbros Owns Me
Joined: Jun 2002
Posts: 14,462
Likes: 6
From: Vancouver, WA, USA
Re: 12:1 compression (pulpdeem)
Honda-Tech Member
Joined: May 2002
Posts: 10,082
Likes: 2
Re: 12:1 compression (92TypeR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR »</TD></TR><TR><TD CLASS="quote">With a thinner headgasket + decked block and milled head = yes.
Just a thinner headgasket, no.</TD></TR></TABLE>
thinner headgasket .. no way
i think it will still be hard to get 12 : 1 comp R with milled head.
i think you need CTR pistons to make it around 12:1 and oviously there are many other pistons to choose from
Just a thinner headgasket, no.</TD></TR></TABLE>
thinner headgasket .. no way
i think it will still be hard to get 12 : 1 comp R with milled head.
i think you need CTR pistons to make it around 12:1 and oviously there are many other pistons to choose from
Honda-Tech Member
Joined: Oct 2003
Posts: 804
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From: Stormin' The Castle
Re: 12:1 compression (pulpdeem)
why do you want to go that high anyway? you are just going to get detonation with pump gas and ruin a perfectly good motor. i know i did it, even with a good tune. your best bet is to keep it under 11.8:1. as far as a head gasket I always go with Cometic. http://www.cometic.com
Member
Joined: Jun 2004
Posts: 4,558
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From: Somewhere in MD, MD, USA
Re: 12:1 compression (ITR-00-1457)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITR-00-1457 »</TD></TR><TR><TD CLASS="quote">why do you want to go that high anyway? you are just going to get detonation with pump gas and ruin a perfectly good motor. i know i did it, even with a good tune. your best bet is to keep it under 11.8:1. as far as a head gasket I always go with Cometic. http://www.cometic.com</TD></TR></TABLE>
not true at all.... whoever tuned your car probably wasn't a great tuner.
I have been running 12:1 for 2 years now and after tuning with even bigger cams I have no detonation problems.
As for getting there, I just say go with CTR pistons....
not true at all.... whoever tuned your car probably wasn't a great tuner.
I have been running 12:1 for 2 years now and after tuning with even bigger cams I have no detonation problems.
As for getting there, I just say go with CTR pistons....
FSAE
Joined: Jan 2002
Posts: 5,495
Likes: 1
From: Drinking Beer, UT
Re: 12:1 compression (totsie7944)
I'm running 12.3:1 and 36degrees of ignition timing at WOT on 92 octane with huge cams. With these cams (BC5) I could run 13.5:1 on 92 and be fine. Remember that the larger the overlap on the cam, the more compression is bled off.
It is all about the tune. If you cannot tune ignition timing you will have problems.
It is all about the tune. If you cannot tune ignition timing you will have problems.
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