how to lower compression ratio?
liquid8
03-07-2002, 04:44 PM
don't you need to have a lower compression ratio to run big boost from a supercharger or turbo? say if you have a gsr motor. or a b16. how would you go about doing that? cuz i've seen some pistons that raise compression. isn't that bad? i haven't seen any that lower compression ratio. and since you would need to replace internals...........
VTECseoul
03-09-2002, 06:10 PM
there are Co.s & shops that can get you dish pistons, it'll drop the CR down to 8.8 or 8.5 - but you don't have to lower the CR, even w/ high boost. just use the right fuel (premium or race gas [not legal on street]) & have the motor tuned correctly to take the boost it's given.
ric
03-09-2002, 09:22 PM
he's right, though if you do want to lower thicker head gaskets are an option also
Rgacke
03-10-2002, 12:23 AM
how much do those head gaskets lower C/R? and wouldn't they increase the chances of blowing a head gasket because of the more exposed area?
kane2g
03-11-2002, 03:48 PM
Getting some headwork done would increase the size of your combustion chamber, thus lowering the compression.
drift
03-11-2002, 04:59 PM
Originally posted by VTECseoul
(premium or race gas [not legal on street]) & have the motor tuned correctly to take the boost it's given.
race gas is legal as long as it's unleaded. it's about $4.50 a gallon here.
(premium or race gas [not legal on street]) & have the motor tuned correctly to take the boost it's given.
race gas is legal as long as it's unleaded. it's about $4.50 a gallon here.
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