Using the form CR Calculator these are the numbers I came up with any thoughts?
Cubic In. 279.9
SCR 9.64 : 1
DCR 8.13 : 1
Quench 0.0725
I think Quench may be diff. because Calculator didn't take milled head into equation.
Thanks
Number for review
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oletshot
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Re: Number for review
Milling your head doesn't affect quench. Milling your block does, calculator accounts for that though.
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'98 XJ 2-door, '94 YJ.
'98 XJ 2-door, '94 YJ.
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Mgardiner1
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Re: Number for review
Thats a lot of quench for 8.13 DCR. I'd like to see a tighter quench then that
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bratcop
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Re: Number for review
I think you will want your quench much closer to .045 if you want a DCR of over 8.0:1. With the DCR that high, you are going to need the quench tighter because you will need the help it provides to avoid the pre-ignition ping. I am at 8.0:1 with a quench of about .045 and it runs at 500 above sea level on 87 octane. Good Luck!
Bratcop
Bratcop
2001 GC Laredo
4.5 Stroker, 9.6 SCR, 8.1 DCR
Stock Valvetrain
24# Cobra Injectors
Bored Throttle Body
CAI
Ported and Polished 0331 Head
SplitSecond PSC1-003 Piggyback
Zeitroniz WideBand O2 logger
(all of this is still in the works as we speak)
4.5 Stroker, 9.6 SCR, 8.1 DCR
Stock Valvetrain
24# Cobra Injectors
Bored Throttle Body
CAI
Ported and Polished 0331 Head
SplitSecond PSC1-003 Piggyback
Zeitroniz WideBand O2 logger
(all of this is still in the works as we speak)
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