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On 12 Nov 97, Jason Cornfeld wrote:
> I just
> found out my motor should be good because all the bearings were good.
> But the heads were cracked.. Bad.. so, I got some new ones from Chirco
> In Tempe. And they are nice remanufactured heads.. but I have a prob
> with em.. well not the heads.. but the case I guess. Um well. Like 5 of
> the studs are STRIPPED?!?!? I dont get it I tightened them in the
> correct pattern. and to 27 pounds but 5 of em well.. just kept going and
> going and going and just pulled themselves out. =( =..( thais sucks. now
> I think I can Helacoil Them.. is this ok? I can tell that the stud comes
> really close to the cylender, is it ok to still put the helacoil in if I
> am careful?
The good news is that this can be fixed and for not too much money.
Helicoils would probably work, but this is very difficult to do
correctly. They must be drilled and tapped PERFECTLY square with the
case. Rather than trying to do it yourself, I STRONGLY recommend
that you have it done by RIMCO (in the LA area.) They do excellent
work, do hundreds of these a week, and have all the tooling and
experience that the rest of us lack. Considering what is
involved, they are CHEAP. They will install solid inserts which are
called case savers. If your engine is a 1600 the standard case
savers are fine and you can continue to use the OE 10 mm head studs.
If your case has been bored for larger cylinders, you should get the
smaller case savers and buy 8 mm studs, unless you already have them.
You should do all 16 stud holes and ask for the "deep sink" insert.
You may need one more long stud then.
The bad news is that you have to take the engine clear apart to do
this, but it sounds like you are not too far from that point anyway.
(I know, it probably doesn't seem that way to you now.) While the
case is at RIMCO I suggest that you have them align bore it, too,
just the minimum amount necessary to clean up. Or you can ask
them to look at it and just bore it it it need it. They provide new
bearings as part of the price, so be sure to tell them up front what
size your crank is. They will supply bearings for a stock crank
unless you tell them that yours is undersize by .010/.020/.... The
stock size crank is marginally stronger.
I think the price for all the above was around $120, plus shipping,
last time I checked. Their turnaround is about 1 day; if I UPS from
WI I can count on the case being back in 2 weeks.
Jim
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Melissa Kepner Jim Adney
Laura Kepner-Adney
jadney@vwtype3.org
Madison, Wisconsin
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