Super Charged Compression Ratio
Discussion
Looking at different engines. I currently own a Jaguar XKR V8. Stand a Rd compression ration is 8.9:1. The piston and cylinder head are damaged. Piston not available.
The NA 4.0 litre has a compression ratio of 10.5:1.
What would be the issues using the higher compression engine ? Would I need to run less boost? Would pump fuel be OK to use.
Thanks for any replies.
The NA 4.0 litre has a compression ratio of 10.5:1.
What would be the issues using the higher compression engine ? Would I need to run less boost? Would pump fuel be OK to use.
Thanks for any replies.
Unless anyone has done it there is no way of knowing for sure. It may run at less boost and/or on 100 pump fuel, only a test on a dyno would tell you.
You could always investigate taking some out of the combustion chamber (if at all possible) or the dish on the pistons if they have any to lower the CR.
You could always investigate taking some out of the combustion chamber (if at all possible) or the dish on the pistons if they have any to lower the CR.
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