Thermostat housing leak - 2.9i V6

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simmit
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Thermostat housing leak - 2.9i V6

Post by simmit » Wed May 09, 2018 2:52 pm

drcdb15 wrote:
Thu May 03, 2018 7:46 pm
I have a problem, as per the thread title. Does anyone know, is this likely to be just the gasket failed (which seems odd to me, why would it?) or is the housing itself prone to fatigue cracks and splits?

A secondary point is, getting gaskets or housings for the 2.8i seems very easy, whereas there is a distinct lack of information out there about the 2.9i - are they the same, perchance?

I really don't want to disturb the housing armed with a gasket, only to find the housing itself is shot and it takes months to find a replacement.

As always, thanks for your experience.
My limited experience says don't take it apart until you have a replacement as the casting will most likely be too badly corroded for further use! If you cannot get replacement in reasonable time then send me a PM.



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Thermostat housing leak - 2.9i V6

Post by drcdb15 » Wed May 09, 2018 3:45 pm

mick_gaugh wrote:
Fri May 04, 2018 10:58 pm

The 2.9 thermostat housing in VGC is indeed a rare beast nowadays
Don't you just know it - wait for ages then three come along at once...

Well Pete got the first one, but I've managed to get the next TWO!! More on that later, but for now, what I *cannot* find is the gasket. I could risk a 2.8 gasket - the one with the little square on it - and just cut out the square but I can't be sure of the diameter and the holes don't look entirely 3 x 120 degrees to me... anyway (and I know, I should cut my own... :roll: ), my next question is:

Can I use Hylomar Blue on the thermostat housing without any paper gasket at all? The blurb says it's OK, and the YouTube Hylomar video says it's OK, but would *you* trust this joint without any paper gasket in it?
Last edited by drcdb15 on Wed May 09, 2018 4:07 pm, edited 1 time in total.


Chris
MB61; formerly 1978 SE6A 3.5 V8; 1986 SE6B 2.9 EFi.

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Thermostat housing leak - 2.9i V6

Post by *JP* » Wed May 09, 2018 3:59 pm

Just to remind people that there were over 2000 TVR S models produced and I think there were approx 1500 of these that had the 2.9i engine.
Therefore it's always worth considering the specialist TVR suppliers when looking for parts for these.



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peter freeman
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Thermostat housing leak - 2.9i V6

Post by peter freeman » Wed May 09, 2018 4:03 pm

Same with the axle advice - buy a sheet of gasket paper and tap one out.



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Thermostat housing leak - 2.9i V6

Post by drcdb15 » Wed May 09, 2018 4:11 pm

*JP* wrote:
Wed May 09, 2018 3:59 pm
Just to remind people that there were over 2000 TVR S models produced and I think there were approx 1500 of these that had the 2.9i engine.
Therefore it's always worth considering the specialist TVR suppliers when looking for parts for these.
I tried that, but didn't find them any better than the likes of Burton etc - when I say 'better', I mean as regards this specific part. Even tried Motomobil in Germany - you'd think *they'd* have parts for a German engine !!


Chris
MB61; formerly 1978 SE6A 3.5 V8; 1986 SE6B 2.9 EFi.

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