stock clutch fan clearance to radiator?

davek · Sep 25, 2020

440 with stock clutch fan,what distance should I have to the radiator? A member had a thread and said shoot for 1/2 to 5/8 and then latter said 1 inch. So yes Im confused,do you measure from fan tip or clutch? thanks Dave the tread https://www.forbbodiesonly.com/moparforum/threads/fan-radiator-clearance.202374/

khryslerkid · Sep 25, 2020

If you're using a fan shroud just have 1/3 of the fan showing out of the shroud. Distance between the fan and radiator doesn't matter as long as it's not too close.

Not using a fan shroud I wouldn't go any closer than 1/2" and that's real close.

Cranky · Sep 25, 2020

Never liked being any closer than 1" to the radiator with the fan no mater what......and even that is kinda close imo. Using a shroud is never a bad thing either.

davek · Sep 25, 2020

no shroud at this time

,are we measuring from the tip of the fan?

khryslerkid · Sep 25, 2020

davek said:
no shroud at this time ,are we measuring from the tip of the fan?

To the closest part of the fan blade to the radiator. The bottom of the radiator will measure closer than the top in most cases.

biomedtechguy · Oct 13, 2020

I had about 1/2" clearance in my wife's GTO to the new Cold Case aluminum radiator, with the factory Pontiac clutch fan. I had been fighting an overheating problem for weeks, AFTER paying $5K to have a bunch of stuff added to the car.
So dealing with a problem that I shouldn't have had to, I finally found that, for the immediate purpose of making Cruisin the Coast, the factory fan would do...
That is until I got home and found a half inch clearance wasn't enough, and something moved and it wasn't the radiator, so now I have a circle chewed into the radiator. Looks like a crop circle! Fortunately the factory radiator and a flex fan got us by. NO WAY am I going to get closer than one full inch away from the radiator in the Roadrunner!

moparedtn · Oct 13, 2020

biomedtechguy said:
NO WAY am I going to get closer than one full inch away from the radiator in the Roadrunner!

Wise words, right there. Depending on mounts and such, engines DO move under normal operation, which
is why there's no rigidly mounted connections to the driveline anywheres if you think about it, at least stock
for stock.
Everything has at the least a swing joint, rubber isolator, flexible line or some such coming to things from the chassis.

72sunroof · Oct 13, 2020

davek said:
no shroud at this time ,are we measuring from the tip of the fan?

If you are having cooling problems the best thing to do is get a shroud. It focuses the air flow through the radiator.

davek · Oct 13, 2020

Yes I bought a shroud all set.

stock clutch fan clearance to radiator?

davek

FBBO Gold Member

khryslerkid

FBBO Gold Member

Cranky

Banned Henchman #27

davek

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khryslerkid

FBBO Gold Member

biomedtechguy

Accelerati Rapidus Maximus

moparedtn

I got your Staff Member riiiight heeeere...

72sunroof

Well-Known Member

davek

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