slowcrx954

i am going ls/vtec and boost with a gt28 looking for as much power that turbo will push.and i want to do it all on 93 oct. With 10.5 will i be good on pump gas on like.How high compression are perple running safe on pump gas.ALL INPUT WELCOME!

purpleh22

As you know, lots of turbo 'kits' are running 8-10 psi on engines with 10:1 comp. A number of them don't have very sophisticated engine management systems. Typically with this type of question, most of what I have heard is "Depends on the setup". It would be helpful to hear examples (setup, cr, boost level) whether or not the car is a daily driver and how long it has been running at that boost level.

ExospeedAMcrx

give a little more info. What bore size you planning to do?

10.5:1 is vague, the bore size can affect the piston design and compression.

an 81mm 10.5:1 will have a small dome vs an 84+mm which will be more of a flat top piston.

but as far as that compression, shouldnt be a problem as long as its fine tuned(like with any setup) We run over 30psi on our 84mm 10.9:1 motors.




Modified by exospeedAMcrx at 11:06 AM 12/21/2006

slowcrx954

thanks for the info and the car will be daily driven,and will have a standalone for the fine tune.also plan on turning down the boost when daily driving.and will be close to stock bore on a ls.