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RE: [T3] Engine rebuild Qs

> From: Jim Adney [mailto:jadney@vwtype3.org]
> > * Can the fan be re-rivetted or bolted onto its hub? Mine
> has some play so I'm not happy to just put it back on.
> This happens occasionally and it should not be put back in this way.

Got a replacement. It is rock solid compared to mine, so there was definitely
wear on mine.

> > * There was a small leak between barrel and head on #2 : there are small
> > lines over about a 2" arc of the sealing surface in the head. I'm going to
> > the head cleaned up. My local rebuilder said if it only needs a cut of 10
> > or so, just leave it be. No need for spacers. It will result in a small
> > increase in compression (say +0.1:1) which will be fine.
> That's probably reasonable, but you should make sure that it really needs to
> cleaned up at all. If the stud in that area was loose, then it might cure
> itself once it was properly torqued.

I can feel the ridges when I gently drag a pick over them. They don't look like
much but when I took the head off the stud felt tight enough so I'd like to be

> There are a couple things to keep in mind:
> 1) Leaky regions like this often signal a loose head stud. This could just be
> nut which worked itself loose, or it could be a stud that is pulling out.
> Personally, I install "case savers" in every case I rebuild, just so I won't

I know - I've been looking back over the archives for engine rebuild tips :-)

> have to worry about this possibility. There are few things worse than pulling
> stud out during the final assy of an engine, or having one pull loose 1000
> miles later.

I'm going for a new case rather than have question marks hanging over the old
one. Not a huge cost difference after machining for a line bore, case savers,
oil filter, etc.

> 2) If you do get this one cleaned up, remember that they MUST clean up both
> spigots the same amount (ie, clean them both up so that both sealing surfaces
> are on the same plane. For best results, it might be best to just get all 4
> surfaces cleaned up the same, keeping the CR equal all around.

Will get both heads done. I'm getting the crank balanced etc. so having uneven
compression may undo the good work.


Matt. UK.
'73 1600e FB.

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