Bobcat698

Is anyone willing to divulge the specs needed to install/machine the O-rings in a 12 Valve head, so I can give them to a machine shop?

I'd appreciate it.

Thanks in advance.

BigBlue

40 thousandths groove with a 50 thousandths ring. That's all I know.

Forrest Nearing

I would use a machine shop that's experienced with it

SRTchris

good advice

blackdiesel

get ahold of jetpilot. or email gus at farmboys diesel. they can get you your info

Bobcat698

I agree, but its not for MY truck.. so he can do what he wants LOL

Jetpilot

Give us a call.

Doug

12valve

We need it posted here as well

Bobcat698

Here are the specs thanks to Doug at PDW.

41 or 51 thousansandths wire
10-12 thousansandths protrusion, reccomend 10 for most cases unless extreme horsepower, requires several re-torquing.
Use a hard wire material, NOT copper.
Stainless steel wire is best.
Cut ring so that it centers on head gasket fire ring.

TwinTurboPilot

wow it really is that easy huh. Now where can someone aquire the stainless steel wire, can it be purchased already the correct size

Jetpilot

BHJ products.....

Also be sure the head is flat and the ring depth in VERY uniform.

Doug