Hi all

I'm out looking after pistons for my L24, i have sourced down a supplier with very interesting prices, they have 2 kind of flat tops, the one with valve relief's and the other without.

The seller say that the one without (Ry 2516) is for 70 - 72 and the one with relief's (RY 6335) is for 73.

My car is a 73, still i prefere pistons without relisf's

The only thing i can think could be the reason for the pistons having relief's is due to larger valves in the E88.

My question is, will the one without relief's work ? motor is bone stock, except of round top SU's and header, any input is appreciated.

Chris

Edited December 12, 200816 yr by ChrisZ

I'm no expert on this, but it seems that if you're running a stock head with stock block, the reliefs are there for a reason. My flat-tops (70) have owner-induced "reliefs" imprinted due to a bad cam install I did years ago. I'd hate to think you'd do the same thing from a different source....

Frank

How much is they asking and what all comes with the kit?

Be sure your deck / heads are not machined for sure , even changing a blown head gasket by a previous owner could scuttle your plans!:surprised

Deck is surfaced, but did Datsun ever come with relief's ?

I once heard that the relief's dont even match up with the valves, to me they are just less compression and more chance of detonation.

Dave a set is with pins and rings, price is $180 - 200 depending on model, http://www.coolparts.com/index.php?p=catalog&mode=search&search_in=all&search_str=ry+2516&x=0&y=0 you can look it up.

The car use to have reliefs in pistons, i just like to know if it is necessary or not.

Chris

Btw, Dave there is a thread about LED lights going on at HybridZ