[Vwdiesel] engine rebuild question
Tony and Lillie
tonyandlillie1 at earthlink.net
Tue Jun 15 18:32:58 PDT 2010
He is right about the ridge, that is something that is common on higher
milage engines. Basically, the top ring stops about 1/4" below the top of
the cylinder, and that is where the wear stops. So, there is a ridge that
forms at the top, where there is essentially no wear.
Not too sure how he bent a valve, as they are straight in line with the
pistons, and they are flat top pistons. I've had them destroy the cam
followers (customer cars) in the past, but never have I seen a diesel with a
bent valve. This includes the TDI engines.
I'd agree, have him do the rings with whatever size is in there now, after
he hones the glaze off the cylinders.
----- Original Message -----
Subject: [Vwdiesel] engine rebuild question
> I took my 82 diesel Rabbit to a local VW mechanic to adjust the injection
> pump timing as I just couldn't get it to run quite right. In the process
> of attempting to adjust the timing some how they bent one of the valves.
> He called and told me that it was really for the best as the engine's
> compression was real poor and it needed new rings. He said he would fix
> the head as it was his mistake and he would cut me a deal and change the
> rings for about $300 to $400 dollars. I called him today as it's been a
> couple of weeks and he told me that cylinder walls have ridges in them and
> that the engine had been rebuilt before and that he doubted if he changed
> the rings he couldn't guarantee the engine. So my question is, is he right
> with the ridges in the cylinder walls is that true, or is it a thing
> where oversize rings, new pistons or something could work.
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