Lex,
I use a material called "parts dip", it is a methylene chloride based
solvent that removes varnish and carbon deposits very well from aluminum
engine parts. The material is sold by several manufacturers here in the US
(McKay, Berrymans). The material is very aggressive on removing deposits,
you simply dip the part into the container, let it stand for an hour or so,
then rinse off the part with water or spirits/paraffin.
I don't know if the material is available in Europe, since it is
environmentally nasty. In fact, the potency of the stuff currently
available is much less than that available 20 years ago, due to
environmental restrictions.
Hope this helps
Paul Kile
1974 Factory MGB-GT V-8
-----Original Message-----
From: Opstal, Lex van [mailto:agopstal@huygmetaal.nl]
Sent: Thursday, February 17, 2000 7:07 AM
To: buick-rover-v8@autox.team.net
Subject: Cleaning inside of pistons
Hi again,
Now that we are discussing pistons has anyone a tip for
me how to clean the inside of used pistons to get rid
of the brown stuff.
I tried several degreasing fluids which are OK for he outside
with the help of a stiff brush but the inside is trickier.
Lex.
Holland.
-----Oorspronkelijk bericht-----
Van: David Kernberger [mailto:dkern@napanet.net]
Verzonden: donderdag 17 februari 2000 3:20
Aan: Keith Wheeler
CC: mgb-v8@autox.team.net; buick-rover-v8@autox.team.net;
dkern@daffy.napanet.net
Onderwerp: Pressing pistons off con-rods
2/16/00
Keith,
Yes, it is OK to press out the pins yourself, as long as you are
very careful to support the piston solidly in the area immediatley
around
the pin bore. You want all the force to be concentrated right there!
You
can make a support like a piece of thick-wall pipe with a bore larger
than
the pin and an outside diameter small enough to clear the ring area
above
and the skirt area below.
I might be interested in talking to you about the pistons (are
those the parts you are getting rid of?) especially if the price is
right.
How about the rods? Are you getting rid of any of them?
Cheers,
Dave K.
**************************************
>Ok, I've always taken *everything* to the machine shop. I've got
>a bunch of Rover con-rod assemblies sitting about, and I'm trying
>to get rid of stuff I don't want/won't use. If I make a jig for
>my benchtop hydraulic press, will I screw up anything if I press
>the pistons off of these con-rods myself?
>
>Also, here's the current saga:
>
>Disassembled one of my 3.5s, oil control rings were gone, and on a
>couple of pistons the lower compression ring was so coked up they
>had siezed. Yuck. Scratched bores. I'm going to have it taken out
>020, go with higher compression pistons, and it goes in the 'B. I've
>decided that my 3.9 (which only needs rings, bearings, and a camshaft,
>no machine work) will go in my Range Rover.
>
>Hope everyone's projects are rolling along,
>
>-Keith Wheeler
>Team Sanctuary http://www.TeamSanctuary.com/
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