100 PSI from a garden hose.... what you got there braided garden hose. I
have a hard time with that figure. While I can see if you had a blockage you
could go above the stock system rating which is a good point... but 100 PSI
the garden hose would bust, heck if I put my finger over the end of the hose
it would cut me. I need you to school me on this one, how do you figure it?
-----Original Message-----
From: owner-alpines@autox.team.net
[mailto:owner-alpines@autox.team.net]On Behalf Of Keith Johnson
Sent: Tuesday, September 02, 2003 8:02 PM
To: Jim Ellis; alpines@autox.team.net
Subject: Re: What temp should I expect
WARNING
the pressure from the water mains will burst the heater core if the outlet
is obstructed. Pressure can be over 100PSI. Work it out the normal "head" is
over 100ft.
I take off top and bottom radiator hoses, temporarily remove the thermostat,
and just run water in the top hose. Use your hand to "seal" around the hose
to increase flow. Any blockages and your hand will move. A ducking is less
aggravation than pulling down things to correct what the water pressure blew
out. This reverse flow often dislodges any loose stuff.
A competent radiator shop can do this reverse flushing for you.
Keith
55 Californian
57 Rapier
----- Original Message -----
From: "Jim Ellis" <hunber@bellsouth.net>
To: "Alpines@Autox. Team. Net" <alpines@autox.team.net>
Sent: Wednesday, September 03, 2003 3:42 AM
Subject: RE: What temp should I expect
> I think Jan has it.. either a blown head gasket or a stopped up block or
> even both. I had a water pump fail and it leaked but still pumped so did
not
> over heat. The pump bearing was pretty loose and may have been close to a
> very bad pump failure at the time but it did not over heat. There could be
> other things causing your over heating besides a blown head gasket or
> casting sand in the block water passages but none of them would be good, a
> cracked block comes to mind. You could try leaving the radiator cap off
and
> start it up, watch the water in the radiator and see if it dances, jumps
> around or pumps out with the engine running. This would be a sign of a
blown
> head gasket or a cracked block. Water spitting out the tail pipe is
another
> thing to look for, a white spark plug tip may show up also...maybe. Then
you
> could get lucky and have a bad radiator cap, but if you replace it stay
with
> a stock rated cap have heard of bad things happening to heater cores with
> higher than stock rated caps. You might also try flushing the block with a
> garden hose, engine must be stone cold to do this. Get a hose fitting that
> will screw into the end of you hose and install it at one side of the
heater
> hose connection at the heater control valve, remove the bottom radiator
hose
> turn the water on full blast, run it until it comes out clear, move the
> fitting to the other hose that goes to the heater control valve and
repeat.
> You will be amazed at what flushes out of the block when you do this and
it
> can take a good bit for the water to run clear. Hope it helps... Jim E
>
> -----Original Message-----
> From: owner-alpines@autox.team.net
> [mailto:owner-alpines@autox.team.net]On Behalf Of jumpinjan
> Sent: Tuesday, September 02, 2003 10:09 PM
> To: Kurt Eckert
> Cc: Alpine folks
> Subject: Re: What temp should I expect
>
>
> Kurt Eckert wrote:
> >
> > I have been having a problem with my 3GT overheating and attributed it
to
> > the 40 year old radiator. Well I got my radiator back from being
re-cored
> > with a modern 3 core setup and I am still getting steam coming out from
> > under the hood after a few minutes of driving. What sort of temp should
I
> > expect?
>
> If you get steam after a few minutes of driving, then it's not the
> radiator. I have never seen any problems with the water pump overheating
> the engine. I suspect some deeper problems like head gasket failure
> and/or sediment build up in the block. How long has it been since the
> last engine rebuild?
> Jan
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