Whoa, Pete, now *that's* a different perspective and more of what
I was really concerned about!
" It seems that some of the cars are fine with a stock rad and some
need additional help."
I can see the fog real clearly now, thanks! :- )
Can someone verify whether the stock TR250/6 radiator is, in fact,
3-row?
Dave Friedlander
CF25194UO
Peter Macholdt wrote:
Well, I have to jump in here as the contratian. My 250 has an engine
with
about 10K miles. It is in good shape as indicated by a leak-down test
and
the way it runs.
Before last winter, it ran a bit over 1/3 on the temp gauge under
normal
conditions and a bit over 1/2 while idling in really hot weather.
After last
winter, the temp was running about 1/2 at speed and much hotter at
idle.
What happened last winter? Why, a hotter cam and increased
compression.
I tweaked the timing but could not get it to run in a comfortable
range. The
solution was for me to get my radiator re-cored to a 4 row (I think
stock
was 3 row). This helped a lot.
I know I'm not the only one with this problem. It seems that some of
the
cars are fine with a stock rad and some need additional help.
Peter
'68 TR250
on 3/8/03 8:19 PM, David Friedlander at forzion@maine.rr.com wrote:
> Thanks, Dick, just as I thought. Can't understand why re-coring
costs
> more than a new stock radiator but life is full of mysteries, no? I
> had also been curious if running a tweaked engine would cause the
> radiator
> to be stressed in normal operation. Guess that, even if that was
true, I
> could
> always add an electric fan later.
>
> Thanks again,
>
> Dave Friedlander
> '74 TR6
>
> Sally or Dick Taylor wrote:
>
>> Dave---There's nothing wrong with the capacity of the stock
radiator,
>> under most conditions.
>>
>> I went with the 7 lb. cap years ago after a bout of blowing heater
>> control valves. This was about 15 years ago. No problems with
>> overheating with the lesser cap. Or heater valve.
>>
>> Dick
|