[DMCForum] Re: Those darn y-pipe o-rings
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[DMCForum] Re: Those darn y-pipe o-rings




I had a leak in the exact same place on my PRV. I used the O-Rings
from John Hervey's kit, and it worked just fine for me. They're nice
and thick.

To torque everything down, I first chased the threads with a tap, and
installed new bolts, just in case the old ones were streched out.

When I torqued everything down, I held the Y-pipe in place with one
hand to keep it flush, as I hand tighened down the bolts, and then
backed the one bolt out, so I could install the heater pipe. I then
slowly torqued everything by hand, using a star pattern on the 4
bolts. And THEN I installed the water pump with new silicone hoses.

Pressure tested @ 14psi for 20 minutes, and nothing leaked then, nor
since.

How do you like the 760? I know the motors, but nothing about the
trans, or even the overall feel of the cars. One day when I get a
house, and some garage space to store my future toys, I'd like to
pick up a Volvo Bertone coupé.

-Robert



--- In DMCForum@xxxxxxxxxxxxxxx, "cartermartin" <cartermartin@xxxx>
wrote:
>
> Hi,
>
> I'm new here and although i do not have a DeLorean, I do have a
Volvo
> 760 with the B280F engine.
>
> I am hoping to find the solution to a coolant related problem I am
> having. This is with the y-pipe that runs from the water pump to
the
> back of the engine block. Connected to the waterpump by the rubber
> hose (short in length, large in diameter) and to the block with a
> flange sealed (or was once sealed) with o-rings.
>
> My problem is that one of these failed was 'repaired', however it
> still seeps a small amount of coolant, typically after the engine
is
> cold but when there is still pressure in the system. I replaced
these
> o-rings (again) and used a modest amount of gasket sealer torqueing
> the bolts to 15ft-lbs (11n-m).
>
> I found my way here from an earlier post, "That darn water return
> pipe" from last year. Some of the gallery photos showing coolant
> inbetween the heads has been most helpful and very familiar.
>
> My temptation is to crank these bolts down a bit more but don't
want
> to risk stripping the threads. Then i would have real problems.
>
> Does anyone have an idea as to what torque should be used for these
> bolts? Or have anyother ideas for sealing this thing up?
>
> Many thanks in advance and sorry for the longish post.
>
> Carter





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