Head bolts on 6.9

travisg96 · #1 (**permalink**) 05-09-2008, 09:29 PM

I have a 1986 6.9, does anyone know what size the head bolts are?
Smaller than 1/2 Bigger than 3/8"
Travis

Lead Head · #2 (**permalink**) 05-09-2008, 10:46 PM

7/16 I believe they are

travisg96 · #3 (**permalink**) 05-10-2008, 05:46 PM

Just finished pulling head, must say the head gasket is better that the ones GM used. No obvious signs of burnt valve, some signs of blow by. I suppose that it doesn't take much. Exhaust valves have carbon built up on them but not anything to talk about. Think I will take the head into a machine shop and have it pressure checked to rule out any bad valves. Did International use brass valve guides or are they just cast into the head?
Travis

trike1946 · #4 (**permalink**) 05-12-2008, 05:31 PM

There might be a lot better information down the page a bit in the "pre power stroke" forum. The guys there know all about the older engines. They helped me out when I got my first diesel.