Erm just speaking from my person experience turbocharging my integra, high comp aint good 4 turbo's mate. Wat comp r u talking? Because the higher the comp the more backwards ya car is going 2 go.
im gonna be running 11.5 CR. im building the motor to squash all the myths that turbos dont like high compression. the bottom end is gonna be built with JE pistons and eagle rods all sourced from US. cos it cheaper. the turbo cost 1800 landed.
what will that prove? so you build a high compression turbo engine but what satisfaction will that give you? if you simply lower the compression of the motor you will be able to run more boost=more power, higher compression=less boost= less power, from a turbo perspective anyway. thats how i see it.
im gonna be running 11.5 CR. im building the motor to squash all the myths that turbos dont like high compression. the bottom end is gonna be built with JE pistons and eagle rods all sourced from US. cos it cheaper. the turbo cost 1800 landed.
best of luck... there are a few guys out here running high comp set ups(although with much smaller turbos)... are you sleeving the block or anything? are you running custom pistons, or just the standard high comp je pistons(the turbo and n/a pistons are made of different materials depending on the conditions they will see). Anyway, best of luck, high comp turbo set ups are awesome, just don't cut corners as you really have to do things right. They key is going to be getting a REALLY good tune on the ecu. Be sure to keep your final timing more retarded than normal.
also just a question about the pistons you plan to use, isnt there a difference between the pistons you would use to raise your compression compared to those used to lower compression for a turbo setup? if there is a difference im sure the high compression pistons werent designed for boost appliactions.
Mr-VTEC have u ever seen a high comp turbo. do some searching on honda-tech
SAXMAN- i totally agree. the tuning is gonna be a very important. i will prolly have dyno dave hook that up for me when the time is right cos i heard only good things about him. unless u can recommend someone
isnt there a difference between the pistons you would use to raise your compression compared to those used to lower compression for a turbo setup? if there is a difference im sure the high compression pistons werent designed for boost appliactions.
yes and no... stuff like the generic off the shelf pistons usually come in a lower comp turbo pistons and a higher comp n/a piston, and in that case, they are made from different materials. You can, however, get high comp turbo pistons, they just aren't all that common. If/when I build up the internals of my engine, I'll probably bump the comp ratio up a bit, but to something around 10:1 at the highest(up from 9.2:1 as stock in the d16z6)
Reply With Quote
Originally Posted by jimmeh
Bookmarks