Overheating 110 CSW (19J)

I had a pleasant trip to Gloucester last Saturday, where the nice
people in Allisport fitted large intercooler in Reggie (a 110 CSW with
a 19J).

The intercooler sits in front of the standard radiator and this now
seems to have identified a potential cooling problem with the car. I
accept that I will have reduced cooling anyway for two reasons - 1.
Less cooling air over the radiator and 2. What air there is will be
warmer (if the intercooler is doing it's job!) , but even with that,
the engine seems to get a lot hotter than I would expect.

Now Reggie has always run cold, even when doing a steady 70 down the
motorway, the temperature gauge would only just climb into the white.
When towing the caravan, it would get slightly hotter, but not much
more. A good pull up a hill and it may get to half way across the
gauge.

With the intercooler fitted I now get to half way on the gauge on the
motorway, without towing! My concern is what happens when I tow - will
it get too hot and overheat? Bear in mind it is getting hot in winter
- will it get worse in summer?

The obvious things to check are the thermostat and radiator. I know
the fan is "free" when cold, I must also check it when it gets hot and
confirm that it locks up (but I assume it's effect is minimal when
compared to the airflow across the radiator at speed.)

Is there anything else I should look out for or do?


Cheers

Peter

you might want to try removing the thermostat altogether for a while and see how it goes?
also consider fitting a kenlowe type fan?

On 2006-02-20, puffernutter <[email protected]> wrote:

> Now Reggie has always run cold, even when doing a steady 70 down the
> motorway, the temperature gauge would only just climb into the white.
> When towing the caravan, it would get slightly hotter, but not much
> more. A good pull up a hill and it may get to half way across the
> gauge.

Hmm, my 110 300TDi has always run at halfway up the temp gauge no
matter what the conditions (after warming up of course), both before
and after having a full-width Fearns intercooler fitted. It's only
gone over that once, when I'd packed both the intercooler and the rad
with mud. I've towed about 1.7 tonnes with it in the middle of a hot
summer and it sat there halfway across the gauge.

Are you sure it's not working properly now? ;-)

> The obvious things to check are the thermostat and radiator. I know
> the fan is "free" when cold, I must also check it when it gets hot and
> confirm that it locks up (but I assume it's effect is minimal when
> compared to the airflow across the radiator at speed.)

If it's a viscous, ISTR that it's a PITA to check to see if it's
working properly, as it works by transferring torque through a liquid
so it'll still spin freely if the engine is stopped and you try to
turn it by hand. I've known at least one person change a fan because
he expected it to be locked to the shaft when hot, just checking that
you're aware of that... Try getting it hot and pulling over with the
engine running and hopping out to check if it's blowing air over the
engine, and try to do it all in as short a time-frame as possible.

It almost sounds like the fan was "on" all the time previously, making
it hard for the truck to heat up, and now it's working properly.

--
Blast off and strike the evil Bydo empire!

As well as checking your viscous fan, have a look at the state of your
radiator - it could be that some of the fins are corroded/destroyed and
your new intercooler is covering the remaining good ones?

Our 200tdi had a badly corroded radiator and it was hitting the red
line.

Also, your intercooler allows you to generate more power - by burning
more fuel (colder air in turbo can hold more fuel) - this could
increase the engine temperature - worth checking with others who have
had an intercooler upgrade and see if their engines run hotter.

Matt


puffernutter wrote:
> I had a pleasant trip to Gloucester last Saturday, where the nice
> people in Allisport fitted large intercooler in Reggie (a 110 CSW with
> a 19J).
>
> The intercooler sits in front of the standard radiator and this now
> seems to have identified a potential cooling problem with the car. I
> accept that I will have reduced cooling anyway for two reasons - 1.
> Less cooling air over the radiator and 2. What air there is will be
> warmer (if the intercooler is doing it's job!) , but even with that,
> the engine seems to get a lot hotter than I would expect.
>
> Now Reggie has always run cold, even when doing a steady 70 down the
> motorway, the temperature gauge would only just climb into the white.
> When towing the caravan, it would get slightly hotter, but not much
> more. A good pull up a hill and it may get to half way across the
> gauge.
>
> With the intercooler fitted I now get to half way on the gauge on the
> motorway, without towing! My concern is what happens when I tow - will
> it get too hot and overheat? Bear in mind it is getting hot in winter
> - will it get worse in summer?
>
> The obvious things to check are the thermostat and radiator. I know
> the fan is "free" when cold, I must also check it when it gets hot and
> confirm that it locks up (but I assume it's effect is minimal when
> compared to the airflow across the radiator at speed.)
>
> Is there anything else I should look out for or do?
>
>
> Cheers
>
> Peter

In message <[email protected]>
"puffernutter" <[email protected]> wrote:

> I had a pleasant trip to Gloucester last Saturday, where the nice
> people in Allisport fitted large intercooler in Reggie (a 110 CSW with
> a 19J).
>
> The intercooler sits in front of the standard radiator and this now
> seems to have identified a potential cooling problem with the car. I
> accept that I will have reduced cooling anyway for two reasons - 1.
> Less cooling air over the radiator and 2. What air there is will be
> warmer (if the intercooler is doing it's job!) , but even with that,
> the engine seems to get a lot hotter than I would expect.
>
> Now Reggie has always run cold, even when doing a steady 70 down the
> motorway, the temperature gauge would only just climb into the white.
> When towing the caravan, it would get slightly hotter, but not much
> more. A good pull up a hill and it may get to half way across the
> gauge.
>
> With the intercooler fitted I now get to half way on the gauge on the
> motorway, without towing! My concern is what happens when I tow - will
> it get too hot and overheat? Bear in mind it is getting hot in winter
> - will it get worse in summer?
>
> The obvious things to check are the thermostat and radiator. I know
> the fan is "free" when cold, I must also check it when it gets hot and
> confirm that it locks up (but I assume it's effect is minimal when
> compared to the airflow across the radiator at speed.)
>
> Is there anything else I should look out for or do?
>
>
> Cheers
>
> Peter
>

I'd venture that the cooling system is now working properly for the
first time. Unless you can find anything obviously wrong I think you
will find that the guage will always read the same, except possibly
when towing up a long hill.
Bear in mind that from just above the white to just below the red is
only a few degrees - the guage is not linear.

Richard

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puffernutter wrote:

> Now Reggie has always run cold, even when doing a steady 70 down the
> motorway, the temperature gauge would only just climb into the white.

Would your interior fan ever blow warm air when your gauge was just
into the white?

> When towing the caravan, it would get slightly hotter, but not much
> more. A good pull up a hill and it may get to half way across the
> gauge.

The 19J outside constantly sits just a bit over the half way line, a
long climb with a full load will see temp climb to the end of the
white. Thats with a relatively new (2 year old) cooling system, always
sat at similar places, apart from when the last rad was at the end you
needed to keep the interior fan on when loaded and doing slow, hot
work.

I'd agree with others that your cooling system is now reading what it
should

Regards

William MacLeod