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

["cartermartin" <cartermartin@xxxxxxxxx>]

I used the RTV sealant but did not use new bolts. 

Robert mentioned the same thing so if i have to go back in i'll do 
that as well.

Pulling the intake on the B280f was not a big chore at all so it 
won't be that bad.

Many thanks!
Carter

--- In DMCForum@xxxxxxxxxxxxxxx, DMCVIN6683 <dmcvin6683@xxxx> wrote:
> I used just a little RTV sealant all around the o-rings because i 
did 
> not want to go back there again and installed new bolts.
> 
> Mark V
> 
> 
> 
> 
> On Apr 17, 2005, at 11:57 AM, therealdmcvegas wrote:
> 
> >
> >
> > 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
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >

---

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