Technical > Engine and Transmission

Cylinder Head Machining

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Alexis:
Just diagnosed my idling problems as low compression on cylinder 4.

Leak down test shows 25% of pressure leaking out of exhaust valve.

I've never had a head machined. I was thinking new valves, head skimmed and I'll put a new T belt and waterpump on. Anything else worth while doing while it's out?

PeteG40:
Perhaps not need new valves, just them machining to the seats.

I'd get new valve guides and stem seals too and worth doing the cam seal.

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