water pump options?

[High_Ranking_Noob]

So, the water pump on my 79 510 2 door with the L20b is leaking.  Local auto parts store doesn't have it.  they do have one for an 83 200sx with the 2.2.  The pics look alike, but I figured i would ask the experts (you guys).  If I am not mistaken, the 2.2 is just a stroked L20B right?

[datzenmike]

Yes it will fit but the clutch fan probably wont take the '79 fan blades.

 

Left is the L20B pump/clutch fan, right is the Z series. Below are the plastic fans.

 

[High_Ranking_Noob]

ok so buy it, and then ask the local guy with a bunch of z parts for a fan?  sounds like an easy fix.  Certain Zs I should be after or will all z cars fans of that era work?

[flatcat19]

I'd just buy a pump from rockauto and wait. This way you know exactly what you're getting. 

[High_Ranking_Noob]

it is my daily driver.  I can get the 200sx pump by monday, and a local guy has a bunch of Z cars he parts out.  I will call him tomorrow to see if he has the fan.  If not I guess I will see how good my redneck engineering is until I can get a new one.

[shacks510]

I got an "Import Direct" from O'Reilly (part number CP9009) with the cast iron impeller. Just a word of warming though, the impeller will contact the inner circle cast part of the timing cover. You'll have to file each impeller a tad. Not a big deal, just something to note before installing it and wasting a gasket. There is also a weep hole on the top of the case, as well as the bottom one. Not sure why it's like that, but it is.

[bilzbobaggins]

How bad is it leaking? If it's not that bad, I would rock auto it and also add other stuff you need in the shipment. I've never ordered just one thing.

 

It's a crapshoot ordering one from the parts chains. My oreily import direct has a stamped impeller as opposed to the cast one.

 

Food for thought and your call. Good luck

[datsunaholic]

NAPS-Z and Z-car aren't the same.  A Z-car fan won't fit the NAPS-Z water pump.

 

It's possible but improbable that the NAPS-Z water pump will be the same as the L-series one.  The '79 510 used 2 different size fan clutches depending on whether the car had A/C or not, with the bigger clutch on the A/C cars. 

 

But, I tried using a Z24 water pump (truck one) in an A10 and the fan wasn't the same, so I tried using the truck fan and it wouldn't clear the radiator.  So mixing and matching isn't a good idea unless you have a large quantity of parts to try.  Even with all my parts, I never found a fan that would fit a Z24 truck pump and clear the A10's radiator.

[flatcat19]

NAPS-Z and Z-car aren't the same.  A Z-car fan won't fit the NAPS-Z water pump.

 

It's possible but improbable that the NAPS-Z water pump will be the same as the L-series one.  The '79 510 used 2 different size fan clutches depending on whether the car had A/C or not, with the bigger clutch on the A/C cars. 

 

But, I tried using a Z24 water pump (truck one) in an A10 and the fan wasn't the same, so I tried using the truck fan and it wouldn't clear the radiator.  So mixing and matching isn't a good idea unless you have a large quantity of parts to try.  Even with all my parts, I never found a fan that would fit a Z24 truck pump and clear the A10's radiator.

 

 

That's why I said just get the one that you know works. 

[shacks510]

Oh, and don't get the Beck Arnley one from rockauto. I ordered one and it was a stamped impeller.

[dscottdatsun]

Is there a difference between the Canadian and US model as far as the water pump is concerned?