M35a2 head gasket blown concerns

[Jfm]

Have a Duce in repair now heads off at matchine shop now .gasket blown at outside of cyl 1 and 6 can this be a injector problem or Hp pump out of time?

 

[Menaces Nemesis]

Kinda puttin the cart before the horse, with a bunch of vagueries...
Multifuels, with their 22:1 compression ratio, are known to be hard on head gaskets, especially the old-style weep-tab type. Could just be you had an old set of gaskets that just reached the end of their lifecycle. Make sure to resurface the heads and put new-style gaskets in (New style has integral fire rings, old style has loose fire rings) while you've got it torn down you should have the injectors serviced anyway, so that ends that worry. Also make sure the fuel in the tank is clean, and that you've got new fuel filters installed before you fire it up again. How/if the truck runs at that point will tell you if you've got other areas you need to dig into in the fuel-delivery/timing realm.

 

[V8srfun]

if I ever have the heads off of mine I am going to get them (o-ring’d) the machine shop will machine a small o-ring grove in the head where you can put a piece of piano wire in it. The wire increases the clamping force at the most critical sealing area without the need for different head bolts and higher torque values. Almost all serious race engines that are being pushed to the limit do this to prolong head gasket life.