[Mgs] Flushing the cooling system?

[Eric Erickson]

Matt Trebelhorn wrote:
>
> I would put it down to the first half of my comment -- I suggested 
> that it might be incredibly hard to do, but you work you car, well, 
> incredibly hard!  And more power to you.

Thank you - that is one of the best wishes a person could offer.   :-)
>
> Between the two of us, we have a couple of data points that start to 
> answer the original question.
>
> I get no boil-over when lapping at 95F, with a redline of ~6400; or 
> cruising at 110F.
> Eric gets boil-over when racing at 110F+, with a redline of 7000.
OK, so being on the track in 110F+ temps only happens once or twice a 
year, and it would only see 6500+ revs momentarily, but I needed to show 
that even a decently maintained car might drop some fluid.  :-)  
>
> So somewhere in there is a threshold -- where we might agree that a 
> good car, used hard enough, will boil over.

Still she has behaved worse in slightly lower temperatures and I would 
guess that was a fault somewhere and not the norm.  When it gets to the 
stage that the temp needle tries to break into the oil pressure, I still 
manage to ignore it and get that last lap done and dusted.  She may 
throw her water when I stop in the paddock but she is still good to go 
again within half an hour so is it really an issue.

Being used to seeing a bit of coolant on the ground I was amazed when I 
let a young guy take my car for a spin on a very hot day and he and his 
mates were horrified that she dropped a cupful of water when he brought 
her back.  he thought he had broken something!

Now enough - I have an alloy radiator to fit (and maybe a huge overflow 
tank just in case)!



Eric