[DML] Re: Cooling System Problems - still (coolant overflow bottle)

["Harold McElraft" <hmcelraft@xxxxxxx>]

Good point - Hervey's cap will let you do a separate expansion 
bottle BTW.

Harold McElraft - 3354


--- In dmcnews@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> 
wrote:
> 
> 
> Don't forget to use an overflow style radiator cap, otherwise 
coolant
> will never get sucked back.
> 
> System also MUST be 100% tight, otherwise it will suck outside air
> rather than overflow coolant.
> 
> Bill Robertson
> #5939
> 
> >--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" 
<jtrealty@xxxx> wrote:
> > 
> > 
> > Putting an overflow bottle on is a no-brainer. When I changed 
over to
> > a metal header bottle I was no longer able to check the coolant 
level.
> > To fix that I could have used a clear hose with two fittings top 
and
> > bottom into the header bottle but I couldn't find any clear hose 
that
> > could take the pressure and temperature. It was then that it made
> > perfect sense to just add a hose to the fitting under the 
pressure cap
> > and run a hose over to an overflow bottle. I mounted mine just 
ahead
> > of the carbon cannister on the left side of the engine 
compartment and
> > ran the hose over the motor. You need a fairly large bottle 
because
> > the Delorean has such a large volume of coolant so there is more 
to
> > expand and contract. You also want to try to keep the overflow 
bottle
> > as close to the same level as the pressure cap to avoid creating 
a
> > "head" ie, a differential that can cause a siphon. This overflow 
also
> > helps to prevent any foaming and it reduces the air in the 
system so
> > it should reduce corrosion. The biggest problem is you have to 
have a
> > TIGHT (leakproof) system because it is almost always under 
pressure
> > and is usually at a higher pressure longer because there is no 
air in
> > the system to compress. As soon as you start to heat the coolant 
up
> > you have the system under pressure. Be gentle with the fitting 
under
> > the pressure cap on the header bottle. On mine it was just a 
tight fit
> > and when I pushed the hose on it fell out. I epoxyed it back on 
so it
> > wouldn't leak. Any generic overflow kit will work. This is one 
of the
> > cheaper (read inexpensive) upgrades and is not so difficult so 
just
> > about any owner could do it.
> > David Teitelbaum
> > vin 10757 
> >








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