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Old 04-01-2002, 12:22 PM
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brookspw brookspw is offline
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Join Date: Dec 2001
Location: Nashville, TN
Posts: 551
Re: M103 valve guides

On the M103 engine -- that is not the message I got from Mr. Brotherton. He said that post 1988 engines had much improved valve guides and that replacing the seals tended to fix the problem for an extended period of time.

WHERE is my oil going?

See quote below -- brookspw

Originally posted by edbardzik
Any M103 motor with 160,000 miles is going to have valve guide wear to some signifiant degree. Doing seals alone at 160,000 miles (assuming that the guides have never been done) is like putting a Band Aid on a bleeding artery. It may buy you 10,000 to 20,000 miles of reduced consumption, but the guides will need to be done. At our shop, we rarely do valve guide seals alone on any M103 over 100,000 miles.
1994 C280, dark green metallic
105k miles

1991 190E 2.6, Black
191,500 miles
(sold to another forum member)

2003 Chevy Tahoe LT, Redfire Metallic
105k miles

1989 Mustang GT Cobra Convertible
43k miles
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