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

["therealdmcvegas" <dmcvegas@xxxxxxx>]

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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