water pump

[Guest DatsuNoob]

Looking for one minus the fan clutch. I've got an elec. fan I'd like to use and cant have the fan clutch for clearance issues. Was wondering if all L series water pumps will work? The reason I ask is I see all kinds of water pumps that dont include a 76 620 in their applications. The earlier ones appear to not have the clutch, so naturally that seems to be the one I want. Will it work? thanks.

[84TAVeRT]

you can use the 510 one... but you need to get a pulley...

 

i am planning to do this when i rebuild my motor...

 

i wonder if a z pulley would work?

 

found this billet z pulley

http://www.thezstore.com/page/TZS/PROD/PP1/10-2082

[datzenmike]

Just cut it off!!! Tha pulley is pressed on and doesn't need the clutch part to hold it. I'll post som pics of how I did it with a Skill saw and a metal cutting blade. Hack saw won't cut the hardened shaft.

[]2eDeYe]

 

i wonder if a z pulley would work?

 

found this billet z pulley

http://www.thezstore.com/page/TZS/PROD/PP1/10-2082

 

You need a Z pump to run the Z pulley, you also have to line up the pulleys somehow as the Z pulley/pump is off in one direction (can't remember which direction though)

[OL YELLER]

Go to Rockauto.com....................they have what you are lookin for. and they are really reasonable too............

[datzenmike]

Under $4 for a metal cutting blade for the Skill saw and a minute to slice it up. The round thing at 11 o-clock is the bearing for the clutch part. Once you trim off all the aluminum just cut the shaft behind it. Try to stay away from the pulley.

 

http://i138.photobucket.com/albums/q251/datzenmike/720stuff003Large.jpg[/img]"]

 

Here's the finished product. I migged a few spots at the shaft/pulley just for ease of mind. If you trim the shaft 1/8" out from the pulley you won't need this.

 

http://i138.photobucket.com/albums/q251/datzenmike/motorwpwithclutchcutoffLarge.jpg[/img]"]

 

Total cost $0.80 for the pump gasket. (already had a saw blade on the saw) Used a Z pump as it has deeper pump cavity with bigger impellers, and I had 3 or 4 of them laying around. If you had the rad out you could do it on the motor or use a smaller angle grinder. The engine runs quieter without that big fan roaring.

[Guest DatsuNoob]

good to know. So it sounds like a Z water pump is the upgrade I'm looking for. Are all L motor water pumps interchangeable? Thanks for the pics mike.

[datzenmike]

All L and z will interchange but they will have differences like clutch/non clutch fan (two different size clutches too) different pulleys and different internal pump vanes.

 

L20B truck pump

http://i138.photobucket.com/albums/q251/datzenmike/Lenginewaterpump.jpg[/img]"]

 

Z22/24 truck pump

http://i138.photobucket.com/albums/q251/datzenmike/motorLwaterpump.jpg[/img]"]

[]2eDeYe]

The ZX pump has more volume due to a larger impeller. Just have to deal with the offset pulley issue.

 

One way I've seen it resolved was slotted alt brack holes and a Z Crank pulley.

 

I'm hoping I can use a shim behind the pump pulley to get them to line up. I think RIS used some washers to space his out, until they caused the pulley to crack.

[84TAVeRT]

someone needs to produce a billet spacer to allow use of the z pump on the 4 cylinder :) i would buy one :)

 

maybe a kit with pump, spacer, and pulley

 

later,

Chris

[]2eDeYe]

Spectre offers a shim kit for fan pulleys ;)