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92 is NOT the m20 engine, at least mine isn't (m) (archive)

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Posted by Ben on August 29, 2001 at 02:14:05:

In Reply to: Re: Just picked up a 92 525 posted by Neil Deshpande on August 29, 2001 at 00:29:28:

The 92 should have the M50 engine, but this is the year that did not have VANOS, the non VANOS engine has the same peak power, but the "power band" is not as wide.

The M50 has a timing chain, not a belt so it does not need to be changed like a timing belt. The valves are (automatically)hydraulically adjusted, so they don't need a valve lash adjustment.

Waterpumps are a common problem, the originals are plastic, which fail around 50-60K, yours has probably been changed already at your mileage.

Sounds like a good deal to me, I like the silver too.

92 525iTA M50 non-VANOS


I would say it is a little cheaper than expected, but not a lot. The 1992 had the M20, a considerably weaker engine than the M50 that came in 1993. But, the motor is cheap and bulletproof so you should have no trouble with that. The auto tranny is probably a weak link, but if it shifts and the fluid is not burnt smelling you're OK. If it goes, the 5-sp conversion kit can be got really cheaply. On the motor, look for timing belt replacement (60k miles), change the coolant, check the hoses (7-10 years is really it for rubber), adjust valve lash (30 min job), change the air filter and fuel hoses and you should be more or less fine. I have a bunch of stuff at that might help.

Neil Deshpande


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