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Date:         Sat, 27 Apr 2002 19:37:17 -0500
Reply-To:     Stan Wilder <wilden1@JUNO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Stan Wilder <wilden1@JUNO.COM>
Subject:      Re: 1.9L exhaust system comments
Comments: To: andrewbell@QWEST.NET
Content-Type: text/plain; charset=us-ascii

Over revving the engine too many times. The result of long term abuse or neglect.

Stan Wilder 83 Air Cooled Westy ----------------------------------------- Here is my question about this: I have seen dozens of broken VW cases where the rod/piston, whatever fails and explodes through the side of the block. Why? What failed? Did the crankshaft flex? Did an oil galley fail and a part seized? Did something get too hot? What could prevent this in hindsight?

AB On Sat, 27 Apr 2002 19:06:56 -0500 Andrew Bell <andrewbell@QWEST.NET> writes: > SpaceKommander wrote: > > > Anyway. What's this talk of inferior and weak & flexy crankshafts? > Due to > > many reasons - flow restrictions and ECU cutoff - the engine won't > rev past > > 5,500 RPM anyway - and I've never heard watercooled VW engines > having a > > common failure of throwing a rod or breaking a crankshaft or > wearing out > > the main bearings due to "crankshaft flex." I think the lower end > is almost > > bulletproof. I have over 200,000 miles on my 1.9L and usually rev > it up > > near 5,000 RPM before each shift - and the previous owner did same > and > > cruised the highways of Kansas for hours at 4,500 RPM. Kansas > isn't a small > > state. 4 hours each weekend at 4,500 RPM should rule out any > "crank flex" > > problems. OK, if you are some yahoo with Dellorto 42 IDAs and open > headers > > trying to turn 7,500 RPM then maybe you have a valid point. > > > > Comments? Boston Bob? Ken? How many wasserleakers are replaced due > to > > broken cranks or connecting rods? I'm sure there are some, just > don't think > > it's the primary reason for engine replacement. I think if VW had > done a > > proper job with the heads (sleeved steel inserts in an alloy > block) the > > engines would routinely turn a quarter of a million miles with no > problems. > > Here is my question about this: I have seen dozens of broken VW > cases where > the rod/piston, whatever fails and explodes through the side of the > block. > Why? What failed? Did the crankshaft flex? Did an oil galley fail > and a part > seized? Did something get too hot? What could prevent this in > hindsight? > > AB >

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