Clutch Fan Water Pump

[James]

I met a Dimer with a Datsun 510 wagon in Port Orchard... He gave me a business card... Said he had a clutch fan water pump he could sell me... Long story short, lost the business card.. So thought I would try the forum... Thanks...

[banzai510(hainz)]

YOu can buy new ones if you know the fan size.There were 2 types. as I have 2 fan center sizes.

Dont need his bussniss card

 

Datdoug or Datsunfish??????they are around Port Orchard I believe

[Chris#51EPGraham]

If you don't already have one, the 610 fan I have may be the one you need for that setup.

[INDY510]

.

Clutch fan water pump sounds like a headache .......... it will be REALLY close to the stock radiator

 

 

What's wrong with the stock L16 waterpump and fan???? ........ you can get a brand new stock L16 water-pump that is guaranteed to fit

[datzenmike]

.

Clutch fan water pump sounds like a headache .......... it will be REALLY close to the stock radiator

 

 

What's wrong with the stock L16 waterpump and fan???? ........ you can get a brand new stock L16 water-pump that is guaranteed to fit

 

He may simply be replacing it as the 510s did come with them.

 

Here are the two sizes. The smaller tend to be on L16/18 and L20B cars and trucks. The larger are from Z20/22/24 equipped cars and trucks. The larger may also be on L24/26/28 Z cars?

 

 

Beware the cheap rebuild ones with the stamped out sheet metal impellers. Good ones are cast.

[INDY510]

.

Stock 1971 PL510 water pump:

 

 

 

 

Was a stock 1979 HL510 water pump: ......... I removed the clutch fan for more radiator clearance... (using a electric fan now)

 

 

 

Gained about 1.5 inches of clearance:

 

[Chris#51EPGraham]

.

Clutch fan water pump sounds like a headache .......... it will be REALLY close to the stock radiator

 

 

What's wrong with the stock L16 waterpump and fan???? ........ you can get a brand new stock L16 water-pump that is guaranteed to fit

 

Clutch fan WP is a pain in the ass for a few reasons: [1] they sometimes don't last very long and either the pump

or the clutch can fail (I've got two no-good ones, one bad clutch, one siezed bearings); [2] the viscous clutch is

press fitted to the pump shaft so it can't be replaced separately; [3] it fits, but gives even less clearance than the

standard fixed fan on a 510.

 

On the plus side, they're great until they stop working - a little power gain, better gas mileage.

 

The fixed fan can be improved by dynamic balancing. I know from having balanced them that they're badly

imbalanced as they come out of the mold, which hastens water pump failure if you drive hard. I routinely

hit 7000+ autocrossing with a stock 4 blade fan I balanced, didn't eat any WP's but also didn't test it for high

mileage either. I got over 50k out of WP's running no fan on the street, but they would only last 25 or 30k

with an un-balanced stock fan installed. Never tried using electric fans, and I got away with no fan by being

careful of temps.

 

I have the type of fan you see on the left of Datzenmike's photo.