Bob,
It sounds like we're back to the theory that water is expanding
due to engine temperature rise from hard racing and NOT
because of a leaky head gasket. Interes ting. I wasn't aware
that you were still adding water after races. Guess that's
something I will need to be aware of when I finally my 3 on
the track.
Would an electric fan thermostatically controlled while on the
track make any difference?
Brad
On 26 Feb 2003 at 12:39, rgk wrote:
> Larry,
> I don't know what the norm is, and I hope others that do pipe up, but I
> can't do a 20 minute race running balls to the wall without reaching 220
> degrees. This alone may be putting water in the bottle and it has become
> something I have gotten used to. I have tried the gas-tester route, and
> the radiator pressure tester and come up clean. With no exhaust to pump
> the water out, I believe it's simply the thermodynamics of water pressure
> overcoming the cap. 15 minute races are perfect, but the heat is rising to
> the limit at the end. All I have to do is take my foot out of it for a few
> laps and it cools down to around 200. OTOH, I can't accept having to back
> off to cool it down anymore and losing places to guys I should beat, so
> I'm going to get an aluminum radiator very soon. I think this may be the
> solution.
>
> Bob Kramer
> rgk@flash.net
> ----- Original Message -----
> From: "Russ Moore" <rem@cbord.com>
> To: "'Larry Young'" <cartravel@pobox.com>; <fot@autox.team.net>
> Sent: Wednesday, February 26, 2003 11:19 AM
> Subject: RE: Head Sealing Problem?
>
>
> > One of three things.
> > Not sealing at the head/cylinder area; not sealing at the base (figure 8
> > gaskets) or a fracture either in the head, block base or in a liner.
> >
> > Russ Moore
> >
> >
> > -----Original Message-----
> > From: owner-fot@autox.team.net [mailto:owner-fot@autox.team.net]On
> > Behalf Of Larry Young
> > Sent: Wednesday, February 26, 2003 12:05 PM
> > To: fot@autox.team.net
> > Subject: Head Sealing Problem?
> >
> >
> > I'm trying to figure out what's going on with my TR3 engine. Ever since
> > I rebuilt the engine, I've had a problem with it blowing water out into
> > the overflow bottle. In a 20 minute race, it will blow about a quart
> > into the overflow. It's also running hot. I'm not getting any water in
> > the oil. I'm running a solid copper head gasket and used a block sealer
> > after I installed the head. I also pressure tested the block and all
> > was fine. After the first race weekend, I checked for combustion leaks
> > into the radiator using a kit which has a dye in it. The dye is
> > supposed to change color if combustion gases are present in the cooling
> > system. I couldn't tell for sure whether it was changing color or not,
> > so I retorqued the head and treated it again with block sealer. I did
> > have to turn the nuts to get the torque back to 100 lb and one stud felt
> > a bit squishy, like it didn't want to tighten up. I gather from resent
> > posts, that this is abnormal. It continues to blow water out the
> > overflow. I think I've got a head gasket that leaks only under load,
> > i.e. race conditions. However, others I've talked to aren't so sure.
> > I'm thinking I need to pull the head to try and figure out what's going
> > on. Any suggestions would be appreciated. Thanks, Larry Young
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