Whoa! Sorry! Didn't mean to step on any toes! The reason I said you were talking about a clutch fan is that is what I have in my van and it looks EXACTLY like the one in the MP catalog. I have always thought the terms "viscous fan" and "clutch fan" were interchangeable, as Charlie said. Maybe you could enlighten us on the difference?

maybe his fan has a torque converter?
seriously though, if there is another type of fan out there that works well and fits a slant i'd like to know about it.

-james

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Some (Most) heavy duty trucks, have a "true" clutch fan. Either air operated or electromagnetic. They are controled by a temp sensor, to either let the fan totaly freewheel, or lock up solid. But the only one of this type I have seen on a car, was (I think) a Mercedes.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Sounds like much ado about nothing to me. A viscous drive is a type of clutch. Anything that engages to transfer torque or disengages to prevent the transfer of torque is a clutch, whether it relies on a mechanical/friction mechanism or a hydraulic mechanism such as a viscous fan drive.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

Today i solved the overheating problem. It was due to a crappy remanufactured distributor which unbelievably had an OCATAGONAL reluctor! i.e. a slant six distributor with a V8 reluctor. There was no way for the timing to ever happen correctly. When I put in the motor I always had a rough idle and i was thinking it was carb issues the whole time. It's unbelievable that it ran at all! I never thought to count the sides of the reluctor and only noticed it while changing the points. I had bought this part 5 months ago from a reputable place nearby, so I showed I them the distributor and after many dropped jaws they gave me the properly rebuilt one. I dropped it in the engine, adjusted the carb, and everything was smooth.

I took it for a 2 hour drive today and the temp stayed beautifully below the middle point. Even while sitting still in LA traffic.

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That statement does not compute. Only electronic distributors have reluctors and electronic distributors do not have points to change. Are you talking about the distributor cam?

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

yeah, I was calling it the reluctor but yes I mean the cam. I have a points system and the cam in the rebuilt distributor was 8 sided. It seems so bizarre since the shaft of a v8 distributor is so much longer - how did they get them mixed up?

I should have taken a photo.

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For anyone who thinks I'm blowing smoke when I bìtch about "remanufactured" parts...

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I had the same problem and the fix blew my mind. First the Distributor was not advancing. The springs were shot and it only advanced six degrees, this made it overheat super fast. The next problem was the lack of a fan shroud, a quick trip to Tap Plastics, for some fiberglass made it possible to build one. I took a Paint Pen and marked were the fan was located right on the radiator. A weekend and a couple of six packs and the shroud was done, ugly as sin but it worked wonders. Lastly, the 160 thermostat was too low temp for the huge radiator I had. I took it out and unstalled a 190. I thought the old guy who told me this was out of his mind. But, by golly, the van stopped over-heating. The Old Guy said the coolant was going through the radiator too fast, as a result, the coolant was no having enough heat removed. The higher temp really did the trick. Owned the van for two more years with out overheating again.

I run hot thermostate in all my cars now. They stop overheating and never boil over. I never considered these problems before this event. Now I use them all the time on Customers' Cars and Trucks.