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Old 07-30-2021, 07:57 PM
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Al Schober Al Schober is offline
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Not needing a bore job is consistent with my experience with at least two engines. You'll likely find that there's not even a need to ream out a ridge at the top of the cylinders. Just a light hone and reassemble with new rings.
The A4 block is made of a high chromium alloy which resists corrosion and wear. You're likely to find that all that's needed is new rings.
Valve seats are another issue. Suspect you'll find that the intake seats aren't too bad. Exhaust seats are likely to need some work. Last engine I did the shop installed carbide inserts - no extra charge.
While the block is in the shop have them do the Kaminsky mod to the transmission casing. This is a drill/tap for a 3/4" pipe plug that allows the reverse shaft to be removed without removing the transmission casting. This is very handy if you ever have to replace the roller on the reverse shaft.
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