[T3] Tight Engine
Dave Hall
dave at hallvw.clara.co.uk
Fri Aug 3 11:55:48 PDT 2018
Wouldn't that expand the length of the aluminium crankcase more than the steel crankshaft? It's counter- intuitive, but doesn't the hole expand the same as the metal that would be inside?
I hope it's easy for Keith to fix.
Dave
UK VW Type 3 and 4 Club.
-----Original Message-----
From: "Jim Adney" <jadney at vwtype3.org>
Sent: 03/08/2018 14:27
To: "type3 at vwtype3.org" <type3 at vwtype3.org>
Subject: Re: [T3] Tight Engine
On 2 Aug 2018 at 21:28, Keith Park wrote:
> YES, no problem when cold, spins fine, only
> when at temp. Im strongly thinking end play.
Yes, end play is certainly a possibility. I hadn't thought of it before, but the
crank is steel while the case and bearings are light metal which expand more
with temp than steel. Are the Type 4 end play specs the same as ours? If the
bearing is a bit wider, the spec might also be a bit larger.
And I'm wondering if the flywheel acts like a big heat sink, sucking heat out
of that end of the crank, which would make the end play even more
important.
Hmmm, stuff I never thought about before....
--
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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