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Is it possible for me to get a cam that would lower my dynamic compression?
I have an ef auto with an au head,cam and gasket, extractors and exhaust, vernier cam gear and 3.45 diff. The reason i wish to lower the comp is to fight my pinging problem i cant get rid of. Ive read about raising dynamic comp with cam choice so i thought maybe you could go the other way and lower it. Wasnt sure wether to post here or in the wade cams section.
_________________ 165 Killer Wasps all packaged in a green kmart car, almost an explorer in a way... |
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| rushed |
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i recently had a heavy pinging problem on my car after upping the compression.
some things to look at. -service all filters -98 octane fuel -more cold air -Injectors (bigger, or reco) -Vacuum leaks (was the main cause of my problem) as finding what is actually causing your pinging might be more benificial. |
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| MRESP8 |
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Are you running 98 octane? Generally the bigger the cam the more compression you can run.
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| Trav 4.0 |
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Ive got a minor pinging prob myself. Had timing took out where it was happening (always around 3000-4000rpm) but still there. And i run 98. Tried different 98's to see if it was just one brand.
Im gonna run my EB on E85 to hopefully permanatly get rid of the pinging.
_________________ EBII Fairmont = 206rwkw |
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| green car |
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Does anyone know about how cams work in relation to raising/lowering comp and if it is possible?
_________________ 165 Killer Wasps all packaged in a green kmart car, almost an explorer in a way... |
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| green car |
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Just got back from my engine machinist and he says im chasing a unicorn, said it is possible but mainly used in conjunction with race motors and not to worry about it.
I may just go back to a standard head gasket instead of the steel one, but im gonna do a comp test first to see if its higher than stock.
_________________ 165 Killer Wasps all packaged in a green kmart car, almost an explorer in a way... |
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| Nigel |
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WOuldnt it be cheaper for you to get a J3 chip and just back the timing off slightly?
Or.. .if its that high, go LPG. It should work nice! |
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