well anyone knows how they work? ----long, boring, yet informative information is greatly needed.

faster_gs says that it is a 4% gain for every point? is that true.

so lets say i am making 120hp at the wheels.
how much hp at the wheels with 10:1?
how much hp at the wheels with 11:5?
how much hp at the wheels with 12:5?


finally is it a bolt on type of deal. not a literal bolt like an intake but once my engine is bored at .20', i drop the high compression pistons in, and instant 4% gain in hp. right?

final final question: 91 octane, 12:1 or 11:5 pistons and that's all. how likely is detonation.

Well the way I understand it - our engines differ approximately 4% for each point. Yes, once you bolt them in you get the power.

so lets say you are making 120hp at the wheels - with the stock 9.6:1CR pistons.
how much hp at the wheels with 10:1? ~122hp (120*1.02 half a point increase)
how much hp at the wheels with 11:5? ~130hp (120*1.04*1.04 two point increase)
how much hp at the wheels with 12:5? ~135hp (120*1.04*1.04*1.04 three point increase)


ride__________95 Eclipse RS : 5 speed
power________Field SFC Hyper-R : Gude cams : Jeep TB : AFX UDP : ram air : test pipe : GST catback
suspention___Hurricane F/R lower strut ties : BOMZ F/R upper strut bars : ES inserts
sound________Kenwood KDC 5000 : Audiovox 8" sub toob : Xplod 222
shizzle_______AutoCommand remote start : dual air horns : Caspers o2 simulator(rear)
incomming___Bosal header(maybe), 14b turbosystem(eventually)
Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

It says in your sig that you have an HRC stage 1. Keep in mind that depending on how much boost you want to run you are limited to a low compresion piston. Sure it's possible to have high compression turbo, but you have to have MAJOR fuel tuning.

unless u go bigger with the discplacemtn as in boring or storokign or swapping high compression is not going to help u at all in the seat of pants o meter for your 2 grand


if u swap ina 2.4 and went high compression big cams ignition control and all the bolt ons witha ported head ud have a nice power gain but toerh then that id rebuild your bottom end with lo compression and use your HRC kit, just upgrade the fmu to a vortech

Here is THE thread to read about high compression and turbo.. From Mr. Gary Howell himself:

http://forums.2gnt.com/cgi-bin/dcforum/dcboard.cgi?az=read_count&om=3096&forum=DCForumID13

^^^^ EXACTLY. Read the truth from the man himself that builds race 420A's.



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