f7 pistons

[steer from the rear]

who is it that says u cant run alot of boost on modified std pistons? why is it that u can run 20 psi on a std gt piston yet no one will on a f7, has any one ever blown or know or a f7p/r engine that blown to bits and at what boost?

or is it every one douts renaults build quality and spends the 800 on rods and pistons lol

[5teve L]

I had Scoff machine some standard F7P pistons down by 1.9mm, I think he said CR would be somewhere around 8.5:1, he seemed to think the rods & pistons would be quite happy @ 20 psi on the right set up.
I will be testing this :D
Others have also said they would prob be fine, just not on a generic BB tuning 'chip'
Standard F7P CR is 10.1 so a bit high for alot of boost....

[rs250nut]

Boost from what turbo? Its not boost that will fcuk the pistons its pure power/cylinder pressure that will ruin the ring lands or det. As far as comp ratios go 10.1 is not to high for forced induction.................. use some decent fuel:D

[5teve L]

Boost from what turbo? Its not boost that will fcuk the pistons its pure power/cylinder pressure that will ruin the ring lands or det. As far as comp ratios go 10.1 is not to high for forced induction.................. use some decent fuel:D
Yeah, yeah honda boy.. :wasntme: