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#1
08-01-2004, 11:31 PM
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what is the different from high compression and low compression
what is the diferent from high and low compression. Can someone explain why low compression is better for turbing up. i got a ls b18a with 270,00 miles should i try building and turboing or should i drop it.
ps. what engines are high and what are low compression
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#2
08-02-2004, 01:42 AM
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Re: what is the different from high compression and low compression
when u turbo, it forces more air into the combustion chamber. if the compression of the chamber is already high and you force more air into it, then you bust your engine. it can only take so much compression.
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Clear Corners Front and Rear Strut Bars Cold Air Intake with K&N filter Iridium Spark Plugs High Performance Plug Wires High Flow Cat (unistalled) Cool high/low beam lights All around slotted and AEM pads
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#3
08-02-2004, 07:31 AM
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Re: what is the different from high compression and low compression
yeah, low compression allows more boost, while higher compression gives you more power in NA setups. there are limits as far as tunability and drivability at both ends. also if you got 270k miles I wouldnt do anything to it until I gave it a full rebuild. Id never throw boost at an engine with 270k on it.
for examples, B20B is 8.8:1, thats low, and the RSX type S is 11:1, that is high.
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current -84 datsun 720 4x4(2nd time)-93 accord-90 camry V6-90 warrior-94 300ex history: -01 R1-04 daytona 600-94 teg RS-95 teg LS -91 teg RS-92 teg GSR-94 civic CX hatch (3 times) -94 civic DX-96 civic HX-97 Accord LX-72 superbeetle -74 beetle-84 silverado-66 c10-74 maverick-78 280z -84 200sx-86 tercel wagon-95 mustang V6
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#4
11-02-2004, 09:31 PM
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Re: what is the different from high compression and low compression
yea thats why im doing a ls turbo, so i can get that massive air induction into the combustion chamber with low compression. Damn i do love type r all motor.
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#5
11-04-2004, 02:13 AM
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Re: what is the different from high compression and low compression
also remember to use higher octain gas as the compression goes up to reduce chance of detonation and carefull with jdm's they run higher comp than there usdm counterparts you can run high comp and forced induction but you should sleeve it or run low boost.
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A.K.A. GOT WIDE darton 84mm MID's ls stroke 2.0l GS-R pnp head with full skunk2 pro series valve train and pro1 cams custom divided top mount w/garrett gt4094r not stoping till i hit 750hp to the wheels this aint your mom's car so DONT F***ING TOUCH IT
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#6
11-04-2004, 02:27 AM
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that is why i'm going to turbo my b20b. gotta love the 8.8:1
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93 teg LS  B20BACT Performance Flywheel AEM CAI DC Sports Stainless Steel Header G4 High Flow Cat GReddy MX Cat Back Exhaust Skunk2 Racing Chip Lots of interior goodies 
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