New 4G64 piston option?

[TronCarterIII]

I found these pistons on ebay, and discovered the 4G69 engine at the same time, (which I didn't know existed). It seems like these would be perfect drop-ins for a 4G64 conversions. 22mm pin, 87mm bore, and 100mm stroke. These ones even have teflon coated skirts. About half the price of forged. :/

I dont know what the compression would yield, but they have a pretty good looking dish to them. Just kind of worried about the valve reliefs, or lack there of.

http://www.ebay.com/itm/Lancer-Galant-E ... 094wt_1265

[RaptorReed]

Maybe, The 4g69 are pretty much another way for the Evo guys to go 2.4 if they have MIVEC, but the G69s are more of a true 2.4l than the g64 is. The g64 is 2.351cc and the g69 is 2.378cc.

[TronCarterIII]

Yeah, the .5mm difference in bore size gives it that little bump in displacement. Since a 4G64 would have to be bored out .5mm, I guess they aren't true "drop-in" fit, but it would be a non-issue on a re-build since the block would probably go to the shop for oil squirters, balancing, etc. anyways. I found a set for $100 (+ $88 for rings)! I wonder if they are Hyper-Eutectic, I think I will call ROCK and ask.

[TronCarterIII]

I got a call back from DNJ ROCK products. They are indeed T6 heat treated Hyper-eutectic (High silicone content) with teflon skirts.

The Valve Reliefs still look pretty shallow though. :/

[77amc]

SO, did you get and install them yet????

Findings?

E

[TronCarterIII]

I ended up with forged JE's... The valve reliefs in the piston look really shallow, that is why I decided not to try em... :/

[davdbek95]

wOOULD YOU HAVE THE PART NUMBER OF THESE PISTONS
REGARDS DAVID

[widebodywoody]

I second that

[TronCarterIII]

Sorry for the late reply, the DNJ Rock Products number is P162.
-Tron