Help identifying a forged piston.

[NateCrisman]

Bigblock is the man! Endyn roller wave pistons. I just emailed them to request a spec sheet.

 

[NateCrisman]

That sucks, here's the response I got from Endyn when asked for a spec sheet:


Quote:
We're no longer producing the 4G63 pistons, however, I will give you some advice....the machinist MUST have the pistons in-hand for precise measurement before he can bore/hone the cylinders. All pistons vary +/-.0001" in diameter, and each cylinder must be finished for each piston.

 

[bigblock4g63]

i called them and i am waiting for there return call.

 

[bigblock4g63]

Quoting NateCrisman:
That sucks, here's the response I got from Endyn when asked for a spec sheet:


Quote:
We're no longer producing the 4G63 pistons, however, I will give you some advice....the machinist MUST have the pistons in-hand for precise measurement before he can bore/hone the cylinders. All pistons vary +/-.0001" in diameter, and each cylinder must be finished for each piston.





that sucks. i called them because one of the pistons i have the pin is way off. i am going to have the guy go machine shop.

 

[bigblock4g63]

email from them

I have located the design specs, so we can still make the pistons.
Compression ratio is 9.2-1.
I will need to know the bore diameter you need, as well as your rod's
wrist-pin diameter, as there were two different sizes on those engines.
Price to make the pistons is $505.00 + rings at $125.00.
Larry

 

[NateCrisman]

ok, either you copy pasted that out of the email I got from them that I had quoted on NJDSM....OR

we just freaked out the guy and he is writing emails to me answering your questions! hhaha

 

[bigblock4g63]

I have located the design specs, so we can still make the pistons.
Compression ratio is 9.2-1.
I will need to know the bore diameter you need, as well as your rod's
wrist-pin diameter, as there were two different sizes on those engines.
Price to make the pistons is $505.00 + rings at $125.00.
Larry

----- Original Message -----
From: [email protected]
To: [email protected]
Sent: Thursday, March 26, 2009 8:38 PM
Subject: 4g63 pistons