Re: Engine overhauling

["Steve Abbott" <abbotts@xxxx>]

Thanks for the help David.
I've spoken to our local Volvo service people and they don't have 
much of a clue. They have never had a V6 apart, would you believe! 
The parts department wasn't much help either. They're not even sure 
they can get hold of the seals. The best they could do was suggest I 
work out what I need, order the bits, then pray they turn up. Yike! 
Spoke to a French car specialist who has worked on the 
Peugeot/Renault versions of the V6, and he advised to just pick the 
thickest seal available and slap it all back together and not worry 
about it so much. Double yike. 
Coming from a background of ocassionally working on Goggomobil 
engines where some minimum tolerances are given as 0.00000 inches 
(!), I have some fancy measuring gear and have been meticulous in 
using it. Still end up with much the same result as using a flat 
ground bar and feeler gauges though :)

Cheers
Steve Abbott


--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> 
wrote:
> I have not rebuilt the PRV engine yet so what I am giving you is out
> of the DMC Workshop manual. You are basically correct with the
> dimensions you have given. In the DMC manual it does not have any
> specific cautions against using more than 1 seal (it just assumes 
that
> 1 will do it). The difference in protrusions between any two ajacent
> liners should not exceed .04mm (.0016"). Differences must 
be "stepped
> among the cylinders in a bank. (Don't go up-down-up). I would 
continue
> to try Volvo dealers. Talk to the service manager and get him to 
help.
> There might be a spacer ring that you can order to get you "into the
> ballpark" so that you can finish up with a selective liner base seal
> that will get you closer to the high end of the protrusion
> specifacation or they may tell you it is perfectly OK to use more 
than
> one seal. The use of more than one seal may allow more "crush" so 
you
> may have to exceed the high end spec and instead of .23mm protrusion
> .25-.26mm may be alright. The engine in a Delorean is very close to 
a
> Volvo 760. The core (which is what you are doing now) is identical 
so
> the assembly specs are the same. BTW you are supposed to use 
a "Thrust
> Plate Bracket" on the liner and a dial indicator (clock gauge) to
> actually measure the protusion accuratly . You are dealing with very
> small measurements here so take your time and try to be as accurate 
as
> you can be. You should be able to do this with a flat plate and 
feeler
> gauges. The manual says to measure in 2 places being opposite each
> other and use the larger one for measurement purposes. Eveb if you
> reassemble with the protrusion .147mm the difference from that to
> .23mm is VERY small.
> David Teitelbaum
> vin 10757