Jack,
My TR6 started running hot about a month ago too. I found a couple
of things that I thought were the cause: wrong size fan belt which
led to slipping of the water pump and old heater hoses. I did the
backflushing procedure too. But I think I just found another
culprit yesterday. I had replaced the old thermostat (it looked
kind of cruddy) with a new "standard" one from VB that had 88
degrees C stamped on it. Last week I ordered a summertime one that
has 75 degrees C on it. When I put it in yesterday the temperature
reading stayed at normal. I looked at my Moss catalog later and saw
that the 88 degree thermostat was listed as their cold weather one.
So I'm thinking that I was running a thermostat that just didn't
open unless the coolent was very hot. I think the temperatures for
the three thermostats are as follows:
cold weather: 88 degrees C
standard: 82 degrees C
hot weather: 75 degrees C
You might want to see what yours says.
Tim
>Okay folks, last year during the summer, my '76 TR6 never climbed hotter
>than the halfway mark. This year it gets al the way to the 3/4 mark. It is
>unbearable for anyone to ride on the passenger side and the carpet nest to
>the transmission tunnel gets terribly hot. When it gets this hot it also
>stumbles a bit and I wnder if it is due to the gas boiling in the bowls or
>something. I have checked the waterpump to see if it is flowing well and it
>appears to be. I have never seen a thermostat "kinda" fail, they have always
>worked or not for me. I have flushed the system and put a 50/50 mix in.
>
>So, can a thermostat get to where it only opens part of the way?
>
>Any good ideas that have worked well to insulate the passenger side against
>the heat? (the driver's side is hot but not as hot as the passenger side)
>
>Has anyone tried that chrome backed insulation that I have seen in Whitney
>and the Moss catalog? Does it help?
>
>The transmission has been serviced regularly, and its levels are fine. Could
>a transmission problem be causing this heat? Should I worry about damage
>from this heat to the transmission?
>
>I must do something, SWMBO is not happy and that makes it hard to get her
>out in the car, or even sympathetic to buying new toys for it.
>
>Thanks for the help in advance,
>Jack Williams
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