[DML] Continued: PRV Oil/Camshaft Problems
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[DML] Continued: PRV Oil/Camshaft Problems

You don't hear French (Renault/Peugeot) owners complaining. Perhaps
Volvo and DeLorean owners deserve one another...

Renault Z7 series is basically identical to B27E. Remained in use in
Alpines and R30's well *PAST* B28 introduction into the US (1984 vs
1980). If the camshafts were so terrible, wouldn't the French have
said something, or jumped on the B28 bandwagon sooner? Speaking as a
Z7 owner myself (previous engine in my DeLo), it's a wonderful little
engine that does outperform JZD's production model.

If potential DeLorean owners are scared of the engine, perhaps they
should read up on the PRV before buying a car. I didn't, instead
listening to "conventional wisdom" on this List. That was a mistake.
Anyone remember when I wanted nothing more than re-engine it with a
Vortec ASAP? (Search the archives circa May 2002). Only later did I
actually research PRV history, learn how they were meant to be tuned
(before contortions forced by EPA regulations), and had excellent
success with my Z7 until an exterior hole developed in the upper oil
galley (common problem when the poor things sit idle outdoors for
years). Its low compression Peugeot replacement is quite satisfactory,
so I have no plans to repair and replace the Renault block any time
soon. But I do miss it and wouldn't mind some day dropping it into
another vehicle.

Bill Robertson

>--- In dmcnews@xxxxxxxxxxxxxxx, "DMC Joe" <dmcjoe@xxxx> wrote:
>  Bill,
> You said:
> "For some reason DeLorean owners seem to be the only ones keeping the
> camshaft rumor alive -- making lemonade from an engine they aren't
> thrilled to have in back of their cars to begin with?"
> ================
> Bill, check out the following concerning this subject from non-DeLorean
> sources.
> From The Volvo Owner's Resource Re: 90 760 6cyl[ALL/1998] posted by
Paul S.
> on Sunday, 28 December 1997
> "The worst part and what gained the hatred for this motor is the dreaded
> B27F - and in particular the head oiling and soft cam shafts - a
recipe for
> disaster. To make maters worse the bloody French PR team (sorry :-0
), with
> Volvo along for the ride, did almost exactly the same thing on the early
> B28F. There is even a service bulletin on cleaning the head and oil
> passages."
> From Volvobertone.com/
> "I read that the original v6s had "soft cams' and a sorry internal
> lubrication system, which almost always led to premature death. Did they
> ever improve on that design and if so, what model/year Volvos were
they used
> in and would they swap into a 79 262C?"
> From Mälardalens Studentkåreneral - info about camshafts "Some old
> Volvo-camshafts are not so well done, they easily run down and have
> lubrication problems, the rear end of the camshaft has a oil-outlet
that is
> wrong drilled."
> =================
> As you are well aware lots of DeLorean hopeful's and new owners view
> list. Weather we talk soft cams or lubrication problems it all boils
down to
> premature failure of B-28F camshafts or simply; engine failure. If a
> prospective purchaser is daunted by potential frame rust problems, high
> insurance rates or the cost of extensive restoration or repairs that is
> understandable. They should not however, be turned away because of
> concerning early engine failure.
> The facts concerning pre-mature camshaft failure is proven in
> Cam failure in pre 1981 PRV-6 equipped vehicles is common but virtually
> non-existent for post 1981 DeLorean and succeeding PRV's. 
> DMC Joe  

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