Thread: Manifold is not flat across the faces.

your on to it with the milling machine. Just the head is horizontal and not vertical.

Take it to an engine reconditioner, he will put it on a manifold grinder which is basically a big belt sander. It shouldn't take long, as no set up as with milling, so shouldn't be very expensive.

Cheers, Mick.

Been down this road. A lot were untrue from new (is that a word?).

I assume you've de-webbed it.

Mine was too far gone to machine flat. Similarly, metal spraying was out, would have been too thick.

What the machine shop was heat it up, clamp it, and it cooled flat, or at least within acceptable tolerances. No problems since.

No idea what temp it was heated to. Way hotter than normal EGTs I suspect.

Regards
Max P

Usually done on a big linisher. Use high temperature gasket sealer when reinstalling.

Just got mine linished and PLR at Brendale charged me $35 dollars. They state average is 80 dollars depending on time. Mine had one stud broken and clearly was not flat and I dropped it off at 8am and picked up same day. Pretty impressed for once. Mind you removing a broken stud is another story.

Originally Posted by mousie

Just got mine linished and PLR at Brendale charged me $35 dollars. They state average is 80 dollars depending on time. Mine had one stud broken and clearly was not flat and I dropped it off at 8am and picked up same day. Pretty impressed for once. Mind you removing a broken stud is another story.

Thanks for that - I'm pretty sure mine cost just under the hundred dollar mark, once I finally found somebody who could do it. Filed for future reference!

Moffats at acacia ridge linished the manifold for 65$, thanks for your advice.

Okay so my $35 dollar job may not have been perfect as I thought. All new components used but after a trip long towing trip, to my surprise I see a tad black soot on surrounds of number 3 exhaust. All studs doing their job and all good. Yes now how to tighten and using a proper tension wrench (warren and brown). Maybe it decided to move again but only very minor in the opposite direction or just continue to settle. I did drill the stud holes on 1 2 4 and 5 by a small 0.6mm increase just in case.

I think I will just leave it on and don't touch it.