Thermostat

Technical advice Q&A

64etype
Posts: 425
Joined: Sun Mar 20, 2011 2:07 pm
Location: Texas, USA
United States of America

#81

Post by 64etype » Fri Apr 08, 2016 1:19 pm

Have you looked at the relatively recent change to the impellor offered in rebuild kits (and probably rebuilt pumps). The design uses eight short airfoil shaped vanes instead of the six curved, but flat vanes in previous kits. I went with the six vane version I had on the shelf after an inconclusive debate over on the J-L site....
Eric

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abowie
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#82 Re: Thermostat

Post by abowie » Sat Jan 04, 2020 4:53 am

I had an order to put in this week so out of curiosity I bought a C3731/1* thermostat for £20.

I have a spare 3.8 water rail on the shelf so I shall see if it fits in it and report back.


I asked if it would fit and received this reply

"Hi Andrew

Yes this will fit the 3.8 E-Type, as long as the bypass slot is 11mm or lower in the thermo housing, this was dependant on the company that made the housings and manifolds but they’re fine 99% of the time"

I also got send this:


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Andrew.
881824, 1E21538. 889457..oops. Jezza the V12 XJS race car.
http://www.projectetype.com/index.php/the-blog.html
Adelaide, Australia

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abowie
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#83 Re: Thermostat

Post by abowie » Tue Jan 07, 2020 12:32 am

Fits the manifold.

I shall install into my 3.8.


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Andrew.
881824, 1E21538. 889457..oops. Jezza the V12 XJS race car.
http://www.projectetype.com/index.php/the-blog.html
Adelaide, Australia

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rfs1957
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#84 Re: Thermostat

Post by rfs1957 » Sun Jan 24, 2021 2:53 pm

This brings us nicely in a loop, as Andrew's post brings us back to the present, and this string has just been quoted in this one, where I gave details of getting the cut-off sleeve to work more efficiently.

http://forum.etypeuk.com/viewtopic.php?f=4&t=17043

Did you try and see how the new thermostat fares as regards the sleeve's diameter, Andrew ?

THE SNGB diagrams are great, what a pity that the bypass slot position is not shown in a clearer manner ; furthermore, it is not clear what "11mm or lower means".

The long and the short of this is that every owner should measure the relative positions of their slot, their sleeve in both its positions, and the width of the slot, before blindly fitting a thermostat.

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Rory
3.8 OTS Cream 877393 Built May 28th 1962
1978 Mini Van
(plus bevel and belt single-cylinder Ducatis)

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