I'm not sure if this post should be here... but here I go

Can sr16VE pistons be installed on a sr20DE, which is running JWT S5 cams ???

I had understood that this piston setup will yield a CR of about 11.6:1

Am I right ot wrong ??? ..... Why ???

http://sr20forum.com/showthread.php?t=146993

http://sr20forum.com/showthread.php?t=146993

Thanks a million bro :biggthump

But there nobody answer the big questions...

If running JWT S5 cams will hit the pistons or not

I was told that running JWT C3 cams would not hit...and seeing that C3s are 13.36 mm lift at 285 duration, and S5s are 12.8 mm lift at 281, I think you'd be fine.

I was told that running JWT C3 cams would not hit...and seeing that C3s are 13.36 mm lift at 285 duration, and S5s are 12.8 mm lift at 281, I think you'd be fine.

This should be enough as an answer... but anyone really TRIED IT !!!!:confused:

http://www.sr20forum.com/showthread.php?t=155968
it looks like you'll be fine.

SR20Turbofreak put together a motor similar to that but with JUN cams (.453" lift) and a .040" mill. He has .170" clearance on the intake side and .155" clearance on the exhaust side with a stock headgasket.

Assuming that your head is not milled, Running S5s with .503" lift would give you a clearance of .170" intake and .145" exhaust.

Running C3 cams would still give you ample clearances of .146" in and .121" exhaust.


All that math is for using a stock headgasket.

Ok, now we are talking... facts

Thanks again for all the information :biggthump

NP. All you'd have to worry about with those cams is Valve float, which WILL cause the valves to hit. Make sure you upgrade you're springs and retainers too.

NP. All you'd have to worry about with those cams is Valve float, which WILL cause the valves to hit. Make sure you upgrade you're springs and retainers too.

I installed the JWT S5's with HKS valve springs, but using stock retainers.... no problem so far ;)