Highest compression?
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Originally posted by 99B16Si
most people get away with over 12:1 but youll have an extremely small amount of room for error. moderate ignition timing and a slightly richer a/f mixture are usually required to reduce possible detonation. its kinda of hard to utilize the extra power from compression safely without race fuel.
if it were my street car id leave it below 12:1
most people get away with over 12:1 but youll have an extremely small amount of room for error. moderate ignition timing and a slightly richer a/f mixture are usually required to reduce possible detonation. its kinda of hard to utilize the extra power from compression safely without race fuel.
if it were my street car id leave it below 12:1
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just dont think youll get away with it using a generic skunk2, mugen, etc. chip. theyre not meant for high compression applications and usually add a lot of timing which can and will kill a motor over time
Hi Hi Hi?
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theres no need for that much compression. plenty of power is locked in the head and a good set of cams....you can make plenty of power with 11.5:1 and a good ported head and cams.
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! Ne shab'rud'ni !
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Originally posted by BigBodySmith
12.5 to 1 all day long!!
12.5 to 1 all day long!!
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I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
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Stay at 11.3:1-11.8:1 for a build on non forged internals driven daily.
You can build a motor with a c/r of 12.5:1 on pump gas & drive it every day on 93 oct if its tuned, but I don't recommend it.
Good luck.
You can build a motor with a c/r of 12.5:1 on pump gas & drive it every day on 93 oct if its tuned, but I don't recommend it.
Good luck.
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Authorized Dealer & Tuner for: Hondata, eCtune, Neptune, AEM, Crome, Precision Turbo, Omni Power, Walbro, Innovate & more. Dyno Tuning Services, Ecu Chipping, Chipped Ecus, Conversion Harnesses, Widebands, Fuel Injectors, Fuel Pumps, Map Sensors & more.
For more information visit http://www.Phearable.net or call 1-888-236-9831
Traction Problems
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<--soon to be 12.0:1 on a sohc....cant wait im sitting at a weak 9.9:1 now.
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92 240sx Vert-Drift car-CA Powa!
91 Civic Si-Minty Fresh-Boosted B20/Vtec
01 IS300-DD beater-2JZ no shit
92 240sx Vert-Drift car-CA Powa!
91 Civic Si-Minty Fresh-Boosted B20/Vtec
01 IS300-DD beater-2JZ no shit
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Thanks for your opinions. The motor is DOHC. I'm using a straight up LS motor gutting all the internals and running JE, Grower set up pistons/cams/valves/rods etc... I,m thinking off stroking it which would involve me buying a new crank also, but now i'm wondering if I should just machine the stock crank. I'm also wondering how far I could bore this bad boy out without having to sleeve it. Does anybody know? I will also be doing major machining on the head cause lets face it thats how I'm going to get alot of my power. I kind of weary on how high of a compression I want for the pistons. When you do major work on the head your compression goes even higher. So I dont want them to high but high enough.
