Re: [ihc] Rad overflow

[Steven Stegmann <steve.stegmann@xxxxxxxxxxxxx>]

After fixing the vacuum leak mine works fine with a 12
psi cap.  Actually always worked fine with 12 psi cap
but just wouldn't suck back from the tank.  The vacuum
portion has nothing to do with the pressure rating of
the cap.

If you got a better gasket on the 7 psi cap that could
make the vacuum seal, that would explain it.

If you need a 7 psi cap, something is wrong with your
system.  7 will work, but should not be necessary.

Steve
--- Allan Ericson <lowvolt@domain.elided> wrote:

> ----- Original Message ----- 
> From: "Bob Blair" <bobblair@domain.elided>
> To: <ihc-digest@domain.elided>
> Sent: Thursday, October 28, 2004 10:31 AM
> Subject: [ihc] Rad overflow
> 
> 
> > The radiator overflow recovery system on my 77 SII
> has never worked right. 
> > When it gets hot it will pass some fluid to the
> overflow tank, but the 
> > coolant does not get sucked back into the radiator
> when cool. It didn't 
> > work with the stock overflow and doesn't work with
> the crappy generic can 
> > there now.
> >
> > Any suggestions?
> I'm with Jim on this one. Every IH I've seen with
> that problem had a cap 
> that was 13, 15, or similar psi. Swap to the 7 psi
> cap, problem has always 
> gone away.