Quote:
Originally Posted by EceSSiveMod
a friend of mine told me that if i got 12:1 pistons that i would have a huge increase in hp, is that true? or am i just retarded
punch your friend for me
actually yes he does, he has a si that he put a turbo on with skunk cams and all this shit and its mid 12s thats why i thought he would know what hes talking about
does your friend drive a honda? lol
too high of a compression, you would probably not be able to get any reasonable spark timing advance into it on pump gas
Yes you can make good power with high compressioned FI car, but be prepared to spend allot of money keeping your car alive. You will need lots and constant tuning, lots of fuel, and race gas is preferred. To run 12:1 you would need to upgrade more than just the pistons. Not something a beginner should attempt.
Correct me if im wrong people. But from what i understand is the higher compression you go the less boost will be needed to obtain the goal HP. For example. Say with a 9.1 compression with a 2.8" pulley and the rest of the stage 2 kit, you will see approx. 250-260hp...at 17~psi
If you go 12.1 you will only require approx 13~psi to hit that same hp. Thats what im gathering from the...
There are all these rules of thumb with CR. High with NA, low with boost. but what really matters is strong enough components and low enough temps. Increase boost or CR, heat goes up and detonation is more likely. You could have pistons made of diamond and they would't take detonation for very long.
The higher the CR, the faster you'll get your torque though.
I'm running 10:1 with ...
Quote: Originally Posted by Cobaltsky05 is this stating that the g37s have 11-1 compression ratio? yes...at least i think, they have the motor as my car and my engine is 11-1
Quote: Originally Posted by bsbllscnd970 it was a rhetorical response, jesus. he was just saying nothing, not EVEN diamond, could withstand certain detonations. not that there are actual pistons that are made of diamond. he was simply adding to the fact that not even something w/ the hardness of a diamond, let alone metal, could hold against a really high CR and detonation. haha, thanks. I was busy banging my head on a wall
Quote: Originally Posted by bsbllscnd970 it was a rhetorical response, jesus. he was just saying nothing, not EVEN diamond, could withstand certain detonations. not that there are actual pistons that are made of diamond. he was simply adding to the fact that not even something w/ the hardness of a diamond, let alone metal, could hold against a really high CR and detonation. christ if he had just put it like that we wouldnt be here
26 hp comes by way of increased displacement and a small increase in compression. 10.3 for the 3.5L vs 11.0 for the 3.7L displacement does matter. you're putting roughly a 6% increase
Quote: Originally Posted by 07MetallicSC made OF diamond?! info it was a rhetorical response, jesus. he was just saying nothing, not EVEN diamond, could withstand certain detonations. not that there are actual pistons that are made of diamond. he was simply adding to the fact that not even something w/ the hardness of a diamond, let alone metal, could hold against a really high CR and detonation.
With enough money anything is possible.......... period! if you want to run 20:1 it can happen, how deep is your wallet? If you/or buddy can't build your own engine then don't take anyone's advice on this message board.
Quote: Originally Posted by EceSSiveMod a friend of mine told me that if i got 12:1 pistons that i would have a huge increase in hp, is that true? or am i just retarded your friend is el-stupido. Like everygody said, if you are going to increase your compression ratio, go to 10:1. 12:1 is too much. If you want to make big power swap a turbo or tvs and lose the stock eaton. If you want to keep the eaton, get your head ported, run a...
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