Fan Clutch

[mark grady]

Please keep us updated on your findings.
This is one topic (next to tires) that we seem to discuss often.

I assume you mean that you hear it all the time, or at least that it is very
frequent.

We'll also want to know if you think it affected your gas mileage --- better
cause the engine is cooler, or worse because the fan is taking a lot of
horsepower....

Mark

|I
|decided to go
|to the "severe duty" Hayden 2797 and installed it yesterday. Now,
|I can hear
|that fan loud and clear. We'll be traveling through Texas next
|week to join
|the other GMC Classic members on the coast for a rally. That should be a
|good test for the 2797.
|Don Redding
|76 PB

 

[claude brousson]

There have been a lot of comments on the various fan clutches,and some
of the comments I have a hard time figuring out.For example describing
the speed when the clutch comes on. I thought the only time it should
come on is when the temperature gets up too high, then it comes on until
it gets the temp. back down to normal.
I wish if there is someone who knows the differences between the
different models and makes, they would would post the differences. What
is the difference between a heave duty one and regular one,is it in size
of unit,temp it comes on or what?

I happen to have an OEM from Cinnabar,and it seems to work fine-comes on
if heat gets too high and goes off usually within a few minutes as soon
as it gets the rad. water temp. down to normal.Likely it would stay on
longer if I was travelling in really hot weather.

Is there any one out there who has the figures and facts?

Claude in sunny Victoria, where the temperature is finally just
right-all day!

 

[mr.c]

I have tried both the Hayden, and the Cinnibar. I like the cinnibar as
it has never failed in the two years I have had it on. The prior one
seemed to fail quickly, but the cinnibar works better for me. I know it
costs more, but I have not had the problems.

Al Chernoff
77 Eleganza II