well then i have made my decision i definetly getting highercompression 10 propley ok so i thought about it and i would rather run like 20 psi for race and like 14 for daily driving. Now i know i need injectors but i don’t know **** about them like what do they do besides squirt more fuel in the car.
Originally posted by Gibson
well then i have made my decision i definetly getting highercompression 10 propley ok so i thought about it and i would rather run like 20 psi for race and like 14 for daily driving. Now i know i need injectors but i don’t know **** about them like what do they do besides squirt more fuel in the car.
I got dibs on the pistons when your motor blows 
now why would it do somthing like that
If you’re going to run 20 psi then 9:1 is probably a better choice than 10:1. Getting away with 10:1 on 20psi is not an easy task… better left to race cars with 114 octane and a dedicated tuning guy. However for the original poster who merely wanted 10psi, 10:1 is probably fine. It will have better low RPM power compared with 9:1.
sorry my friend got ahold of my name and posted some **** i am going to stay at 10 psi with 10.1 pistons from JE should i get oversized though
Originally posted by Gibson
should i get oversized though
do you want to resleeve and bore your cylinders out?
if i get it bored out then do i have to get it resleeved because i didn’t think you had to.
stock sleeves are only meant to be overbored .25mm (hence factory pistons only available in a .25mm overbore size); any more than that and you risk cracking the cylinder wall (the risk being increased tenfold or more when boosting). Most aftermarket oversized pistons come in overbores of .5mm and up…rendering an overbore of your factory cylinder sleeves pretty much pointless/bad idea.