Author Topic: Clutch Fan Bolt Size?  (Read 1120 times)

Offline EMCD

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Clutch Fan Bolt Size?
« on: August 19, 2016 - 09:11:18 PM »
What size and grade bolts do I need for a Hayden clutch fan on a milidon hv pump?. My pulley is a marches aluminum pulley with arp bolts.




Offline Chryco Psycho

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Re: Clutch Fan Bolt Size?
« Reply #1 on: August 19, 2016 - 09:30:42 PM »
5/16 x 1.25 grADE 5 IS FAcTORY GRADE 8 WORKS TOO

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Offline EMCD

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Re: Clutch Fan Bolt Size?
« Reply #2 on: August 19, 2016 - 10:14:34 PM »
Thank you sir! Do I need washers? What about using lock-tight?

Offline Topcat

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Re: Clutch Fan Bolt Size?
« Reply #3 on: August 19, 2016 - 10:35:19 PM »
Thank you sir! Do I need washers? What about using lock-tight?

I recommend using lock tite.

Mine loosened up after driving for a while at first without it.

Glad I caught it.

We had a member here grenade his radiator for the very same reason a while ago.
Mike, Fremont, CA.


Offline EMCD

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Re: Clutch Fan Bolt Size?
« Reply #4 on: August 19, 2016 - 10:40:33 PM »
I figured it couldn't hurt. What about washers?

Offline Topcat

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Mike, Fremont, CA.


Offline EMCD

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Re: Clutch Fan Bolt Size?
« Reply #6 on: August 19, 2016 - 11:04:09 PM »
Great. All the pictures I looked at didn't have them, but better safe than sorry.

Offline Topcat

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Re: Clutch Fan Bolt Size?
« Reply #7 on: August 19, 2016 - 11:17:52 PM »
The pulley bolt's that connect the clutch to the pulley do have locked flat washers on them.
Mike, Fremont, CA.


Offline YellowThumper

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Re: Clutch Fan Bolt Size?
« Reply #8 on: August 21, 2016 - 11:54:48 PM »
The pulley bolt's that connect the clutch to the pulley do have locked flat washers on them.

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