
I agree. I remember when I was younger, most people who had the B18C5s and wanted to turbo it usually had to swap out pistons and lower the overall compression ratio. If I remember correctly, the stock compression ratio for that engine was 11.0:1, which is pretty high.C.R.Y. said:i dont know but i see a 10:1 CR with high boost as being disaster. high compression engine and high boost can be done, but its on a built engine. id rather put some 9:1 CR pistons with eagle rods and ls sleeves to be able to turn the boost past 20psi. an ITR engine cant go past 10 psi otherwise itll blow. im not denying the engines ability to make that much hp, however i have a hard time seeing how an engine thats high compression with a turbo will last long, or wont be strained. i have a kid at my school who used to own a civic with a gsr turbo'd. the thing put down 560whp. but the engine was fully built. tuning helps, but even ls engines when turbo'd can only take so much boost.
DeeezNuuuts83 said:I agree. I remember when I was younger, most people who had the B18C5s and wanted to turbo it usually had to swap out pistons and lower the overall compression ratio. If I remember correctly, the stock compression ratio for that engine was 11.0:1, which is pretty high.
By the way, one of my co-workers is planning on buying a '98 Civic CX hatchback. I think he wants to buy an Integra LS motor, then eventually do the LS-VTEC conversion, then eventually strap on a turbo. It should be a quick little car.
C.R.Y. said:i dont know but i see a 10:1 CR with high boost as being disaster. high compression engine and high boost can be done, but its on a built engine. id rather put some 9:1 CR pistons with eagle rods and ls sleeves to be able to turn the boost past 20psi. an ITR engine cant go past 10 psi otherwise itll blow. im not denying the engines ability to make that much hp, however i have a hard time seeing how an engine thats high compression with a turbo will last long, or wont be strained. i have a kid at my school who used to own a civic with a gsr turbo'd. the thing put down 560whp. but the engine was fully built. tuning helps, but even ls engines when turbo'd can only take so much boost.
Jump Off said:Tunning doesn't help, TUNING IS EVERYTHING. Without a proper tune (dyno'd then tweaked on the street) even a built motor will blow. People run 300hp ALL DAY on bone stock LS and GSR motors.
Jump Off said:EDIT: re-read your post... why would you put LS sleeves in a GSR block? I'd spend the 1200 and get darton sleeves installed at a machine shop and have them bore and hone them. LS sleeves would be pointless, alot of work for minimal security.
It's hard to say how much boost an engine can take. Some engines, specifically ones already with large turbos, were made to handle a lot of boost, while other engines weren't. You just have to look at various factors, like engine size, turbo size, compression ratio, stock setup, etc.tennis_dog said:also, how much boost can an engine take?? 16psi? normal turbos give about 6-8 right?? could 20 just blow your car up?