The Top Mitsubishi Galant VR-4 Resource

Join the best E39A 1991-1992 Mitsubishi Galant VR-4 community and document your GVR4 journey.

  • Software Upgraded - Reset Your Password to Login
    In order to log in after the forum software change, you need to reset your password. If you don't have access to the email address you used to register your GVR4.org account, you won't be able to reset your password. In that case, follow the instructions here to regain access to the forum.

Help identifying a forged piston.

NateCrisman

Well-known member
Joined
Nov 22, 2008
Messages
2,054
Location
Blairstown, NJ
Bigblock is the man! Endyn roller wave pistons. I just emailed them to request a spec sheet.
 

NateCrisman

Well-known member
Joined
Nov 22, 2008
Messages
2,054
Location
Blairstown, NJ
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

Well-known member
Joined
Feb 10, 2009
Messages
308
Location
new jersey
i called them and i am waiting for there return call.
 

bigblock4g63

Well-known member
Joined
Feb 10, 2009
Messages
308
Location
new jersey
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

Well-known member
Joined
Feb 10, 2009
Messages
308
Location
new jersey
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

Well-known member
Joined
Nov 22, 2008
Messages
2,054
Location
Blairstown, NJ
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

Well-known member
Joined
Feb 10, 2009
Messages
308
Location
new jersey
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
 
Support Vendors who Support the GVR-4 Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications RixRacing RockAuto RTM Racing STM Tuned

Recent Forum Posts

Top