Rebuilt Non SAI heads- $450
8 Attachment(s)
Just got these back from the machinist. He is a Rover, TVR, MG, Jag specialist that does a lot of race motor work. Very good machinist.
Each head was completely disassembled, all parts checked for wear and tolerances checked. Valves were ground, Valve seats received a 3 angle grind, and the Valve stem seals were replaced. Interesting facts: - Intake and exhaust valve seats are ground at different angles, exclusive to the port. - He uses grinding wheels to ensure the valve grind is centered(Most newer machine shops use a cutting tool which is faster, but also leaves room for the machinist to grind the valve slightly off center) - Most LR heads he does are straight until he gets to the rear water jacket. That is where the majority are out of tolerance. - These heads had already been decked once. Head #1 he took 3 Thousandths of an inch off of it, and now it is 7 Thousandths of an inch less than factory new spec. Head #2 he took 4 thousandths of an inch off of and is now 10 Thousandths of an inch less than factory new spec. He explained that these amounts are negligible and a human hair is thicker than 10 thousandth of an inch. He also said that if you measured compression this would not make a bit of difference. $450 plus shipping. Attachment 36188 Attachment 36189 Attachment 36190 Attachment 36191 Attachment 36192 Attachment 36193 Attachment 36194 Attachment 36195 |
bump, nobody have a pending HG job?
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Rebuilt Non SAI heads
PM sent
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Sold, thank you.
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Originally Posted by abran
(Post 507453)
He uses grinding wheels to ensure the valve grind is centered(Most newer machine shops use a cutting tool which is faster, but also leaves room for the machinist to grind the valve slightly off center)
Neway Manufacturing Inc. |
I'm not a machinist, was just passing on what the machinist told me.
Maybe all shops don't use the technique you are referring to? |
Originally Posted by abran
(Post 509983)
I'm not a machinist, was just passing on what the machinist told me.
Maybe all shops don't use the technique you are referring to? |
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