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808dattodude
Re: commpresion
#5
Quite a regular
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2005/7/21 4:42
From hilo,hi
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so 10:1 will ping.....on 92 octane"super"..??

from 9:5:1 to 10:1 is there a difference in performance???if not i'll just go with 9:5:1

Posted on: 2005/8/3 4:35
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L18_B110
Re: commpresion
#4
No life (a.k.a. DattoMaster)
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2002/8/6 2:24
From Brisbane, Australia
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if its a street engine and you're planning on running regular ULP, don't waste your money on forged pistons. On this fuel a compression ratio around 9.5:1 would be to go. I'd definitely stay under 10:1 on regular ULP or you'll have problems with detonation/pinging.

Posted on: 2005/8/3 2:52
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Tyrie
Re: commpresion
#3
No life (a.k.a. DattoMaster)
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2004/5/4 8:32
From Canberra
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My L20B in the 720 is running at 10:1 and pings on unleaded in summer, thats 91RON I think. Whats wrong with running premium?

Posted on: 2005/8/3 2:41
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Nissan4Eva
Re: commpresion
#2
Home away from home
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2003/7/17 18:59
From Bridgetown, Barbados. W.I
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10-10.5:1 ...i'm running 11.5:1 on my L16 tho with 112 high octane fuel.

Posted on: 2005/8/3 2:24
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808dattodude
commpresion
#1
Quite a regular
Joined:
2005/7/21 4:42
From hilo,hi
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what is the ideal commpresion ratio for a L20B street engine...what will give the best performance and with todays gas..say 92 octane???

i am geting forged pistons costom made so i need to know what commpression i'm looking at..

or lets say the highest commpression ratio i can run with 92 octane because i heard the higher the ratio the better

Posted on: 2005/8/3 0:05
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