As you can see it is variable, depends on pressure you want to run, the grade of fuel you have access to, combustion chamber design, camshaft and on and on. Way too much for me to cover. What I am going to provide here is a very useful chart. Boost pressure is across the top and engine static compression is down the left side. The figures out in the middle are the static plus the boost giving total compression. Keeping <13:5 total compression is a suggestion.
Of course no sooner than I have said that and everyone can cite examples of engines and kits far above 13.5 :1 and to the opposite side of the scale as well.
Seek advice from your tuner/engine builder as to what total compression is good for your machine especially at rebuild time.
Enjoy
Yes we are in Mackay, we only have our manufacturing premises, not open to public. We distribute via the trade and web. If you are in Mackay you can purchase Raptor from the following resellers, JAM Performance, LS1 Proformance and PRE Dyno Tuning
Last edited by Raptorsc; 20-07-2006 at 06:33 PM.
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