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Oil pressure relief valve seat.......agayne......
Posted: Sat Oct 12, 2024 5:37 pm
by bwaminispeed
Do the early 850 blocks have removable steel relief valve seats, or, we're some just drilled/machined into the cast iron of the block.....
Got one that is being rather stubborn at coming out of the block.......
Re: Oil pressure relief valve seat.......agayne......
Posted: Sat Oct 12, 2024 9:30 pm
by Spider
I'm sure it would have had a pressed in seat. You can check if you have the main oil gallery plugs pulled, put a torch up to one of them and see if you can see any light when you look down the oilway to no.3 Main Bearing. You'll see it through nos. 1 and 2 but it should be dark when looking through no. 3.
Re: Oil pressure relief valve seat.......agayne......
Posted: Sat Oct 12, 2024 10:15 pm
by Oneball
There has to be a removable seat doesn’t there as its waisted shape seals the main gallery as well as acting as a seat.