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Old 10-29-2009, 12:41 AM   #1
93d21joe
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Default How to: Eliminate clutch fan and save some cash.

I didn't wanna pay $75 for a pump with a clutch fan, especially when I am running an electric one now. So this is what I did. I hope this will help other people that come across this situation.
My truck is a 1985 720 Z24 5-speed.

The pump is from a 1978 Datsun 280Z. The pulley is from a SOHC KA hardbody, but I'm sure all SOHC water pump pulleys are the same.


It comes with 4 new studs for the pulley, but I didn't want to use them.


So, instead I went to Ace and got 4 of these. If I remember correctly they are M6 - 25mm.


Because of the pulley being pressed on, you can't get three of the pump bolts off.


To remedy that I made another trip to Ace and got these. Once again, if memory serves me right, they are (2) M6 - 30mm and (1) M6 - 80mm. The factory long bolt is around 90mm, but Ace only had 80 and 100. I had no problem using an 80mm.


Just a pic of the bolts together, I didn't get new bolts for the thicker ones, as I wasn't worried about them snapping.


Oh, and the gasket? I tossed it, I prefer to use rtv.


...and, here it is all together, the pulley sticks a bit further out from the alt. but there is no issue.


Here's a side-by-side comparison of a SOHC pulley vs. a DOHC pulley. Anyone wanna go serpentine?


Well, I hope this helps atleast one person.



Update: It's been 4 months now. No problems what so ever. No unordinary belt wear or squeaks. I didn't even purchase a new belt, lord knows how old it is.
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Last edited by 93d21joe; 02-16-2010 at 06:42 AM.
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Old 10-29-2009, 01:22 AM   #2
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dam i wish you woulda posted this like 2 days ago lol looks good
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Old 10-29-2009, 01:33 AM   #3
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What motor is in your truck? What e fan are you using?
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Old 10-29-2009, 02:50 AM   #4
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Quote:
Originally Posted by Ratrod25 View Post
What motor is in your truck? What e fan are you using?
It's a z24, I'll edit my op to reflect that info.
As for the electric fan, I have no clue, it came off of my buddys ae86 and I'm hoping it will cool my truck.
I will be upgrading here in the near future to just a universal 12".
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Old 10-29-2009, 04:01 AM   #5
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Ok cool, i just pulled the front of the clutch off.. You way looks way cleaner!!
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Old 11-04-2009, 01:09 AM   #6
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Seen this in person, no problems with this install. Everything went awesome, def a cheaper solution to buying a new pump and breaking off the clutch.

I vote for sticky?
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Old 11-05-2009, 05:16 AM   #7
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If I remember right the z22 and the z24 water pumps bolt up the same correct? I have a z22 and I got the pulley today goin to get the water pump this weekend
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Old 11-06-2009, 03:33 AM   #8
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Quote:
Originally Posted by homewrecker View Post
If I remember right the z22 and the z24 water pumps bolt up the same correct? I have a z22 and I got the pulley today goin to get the water pump this weekend
I'm not sure, but I don't see why not, I mean they are z series engines.
Good luck man, let us know how it goes.

Quote:
Originally Posted by IThaJokaI View Post
Seen this in person, no problems with this install. Everything went awesome, def a cheaper solution to buying a new pump and breaking off the clutch.

I vote for sticky?
Sticky sounds nice
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Old 11-06-2009, 05:28 AM   #9
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you threw away the gasket?? so confused......RTV better? You do realize RTV gets everywhere right? gets lost inside coolant passages, oil passages, it oozes into everything. Good info for those that hate the factory setup and wanna ditch it for an e fan! I vote sticky!
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Old 11-07-2009, 12:34 AM   #10
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Quote:
Originally Posted by nismopu View Post
you threw away the gasket?? so confused......RTV better? You do realize RTV gets everywhere right? gets lost inside coolant passages, oil passages, it oozes into everything. Good info for those that hate the factory setup and wanna ditch it for an e fan! I vote sticky!
I have NEVER had any problems, and I have done this on every water pump i have ever done.
I don't see it getting lost inside the coolant passages, as long as you let it setup for long enough.

Thanks for the vote on a sticky.
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