Rebuilding my engine

[DDWilson]

I have been working on my M1123 that I got last year. I pulled the engine to find that one of the heads was cracked and must have leaked water into the cylinder, then cracked a piston during starting. The block and crank look new so I have them being checked out at a machine shop I was thinking of going with Promaxx heads. Does anyone know if there is anything different on the military engine from the mechanical standpoint that I need to look for something specific or will standard 6.5 heads work.

 

[NDT]

If your engine is GM then I wouldn't mess with it. If it's GEP then get the newest US cast heads you can find. Since you have it apart, now is a good time to put the turbo heads on it.

 

[Mogman]

The only thing I can add is the turbo heads have a different bolt angle to the intake bolts, the ProMax sets I came across have both styles, for the price they look pretty cheap for something you can just bolt up and go with, I have no experience with these, wonder where they are made?

 

[Retiredwarhorses]

If your engine is GM then I wouldn't mess with it. If it's GEP then get the newest US cast heads you can find. Since you have it apart, now is a good time to put the turbo heads on it.

you still would not be able to add the OEM turbo, the milling process wasn’t completed for the oil feed in the block, and many times nor was the holes drilled for the turbo mounting. You would also have to figure out how you were going to install new exhaust manifolds And pipes.

 

[DDWilson]

you still would not be able to add the OEM turbo, the milling process wasn’t completed for the oil feed in the block, and many times nor was the holes drilled for the turbo mounting. You would also have to figure out how you were going to install new exhaust manifolds And pipes.

thanks guys

 

[TOBASH]

Someone on this forum turbocharged his na engine and did a nice job IIRC.

Maybe posted 8 -12 months ago.

 

[m35a22ton]

thanks guys

Drill and tap! it is fun and nurve wrecking taking a drill bit to a good motor! I have done so on in line 4.0!