The Ford Barn

whizzernick · 12-17-2018, 11:19 AM

I just tried to install a fan belt on 34 I am working on . belt was new (33-36 )
belt was too short . I ended up having to change generator pully to smalest could find. belt is on but very tight gen is as low as it can be. Any ideas why ?

I know that a longer belt will work. any one had this before ?????

Karl · 12-17-2018, 05:19 PM

Yep The ones sold by the Parts houses are to short.
There is a Gates belt which fits much better -can't remember the details but
will be on here somewhere (540 seems to resonate) . I would not run with the smaller belt I did and the inlet manifold broke at the generator mount -Pushing the fan and generator through the radiator -Not good. May not be totally due to the tight belt but it wouldn't have helped -Karl

petehoovie · 12-17-2018, 05:51 PM

I found this fan belt from NAPA fits my '34 with no problems.
See it at > https://www.napaonline.com/en/p/NBG5L570

and here > https://www.vbeltguys.com/products/b...classic_v-belt

5L570 NAPA AUTOMOTIVE Classic Replacement V-Belt

Specifications

Belt Length 57" (1448mm) Belt Top Width .66" (17 mm) FHP Belt Nominal Length 57 in. FHP Belt Nominal Top Width .66 in. UNSPSC 26111801

koates · 12-17-2018, 06:21 PM

I also had the same fan belt problems some years ago on my original 34. I use a Dayco or Gates or Good Year B54 which is 57"around. You also have to watch the tops of the radiator hoses for fan blade clearance as it is pretty close there. Regards, Kevin.

DavidG · 12-17-2018, 07:47 PM

Always a good idea to give the fan a test spin by hand before starting the engine after installing a new fan belt.

whizzernick · 12-17-2018, 07:59 PM

Sponsored Links (Register now to hide all advertisements)

thanks :: I do have a fan belt length checker and belt that I have is 56" I think 57 sounds right
thanks again

Karl · 12-18-2018, 01:30 PM

Use the correct length belt and hopefully avoid this

DavidG · 12-18-2018, 07:23 PM

Ouch!

Karl · 12-19-2018, 07:57 PM

Quote:

Originally Posted by DavidG

Ouch!

Yes - Happened at the end of a 1200 mile trip about 30 seconds after I commented to my wife how well the car had gone. Was a big bang- followed by lots of steam and water on the road ! The AA (our AAA) told me that they would sent a repairman out first to assess the situation and repair the car if he could . My response was just send a truck! -Karl

whizzernick · 12-19-2018, 09:59 PM

I installed napa belt and fit is correct.
THANKS AGAIN

12-17-2018, 11:19 AM	#1
whizzernick Senior Member Join Date: Jul 2013 Location: Hayward Ca Posts: 635	1934 fan belt legnth I just tried to install a fan belt on 34 I am working on . belt was new (33-36 ) belt was too short . I ended up having to change generator pully to smalest could find. belt is on but very tight gen is as low as it can be. Any ideas why ? I know that a longer belt will work. any one had this before ?????

12-17-2018, 05:19 PM	#2
Karl Senior Member Join Date: May 2010 Location: Manawatu, New Zealand Posts: 1,420	Re: 1934 fan belt legnth Yep The ones sold by the Parts houses are to short. There is a Gates belt which fits much better -can't remember the details but will be on here somewhere (540 seems to resonate) . I would not run with the smaller belt I did and the inlet manifold broke at the generator mount -Pushing the fan and generator through the radiator -Not good. May not be totally due to the tight belt but it wouldn't have helped -Karl __________________ Such a fine sight to see-Its a Girl, My Lord, in a Flatbed Ford slowin' down to take a look at me.

12-17-2018, 05:51 PM	#3
petehoovie Senior Member Join Date: May 2015 Posts: 10,155	Re: 1934 fan belt legnth I found this fan belt from NAPA fits my '34 with no problems. See it at > https://www.napaonline.com/en/p/NBG5L570 and here > https://www.vbeltguys.com/products/b...classic_v-belt 5L570 NAPA AUTOMOTIVE Classic Replacement V-Belt Specifications Belt Length 57" (1448mm) Belt Top Width .66" (17 mm) FHP Belt Nominal Length 57 in. FHP Belt Nominal Top Width .66 in. UNSPSC 26111801 Last edited by petehoovie; 12-17-2018 at 06:25 PM.

12-17-2018, 06:21 PM	#4
koates Senior Member Join Date: May 2010 Location: Melbourne Australia. Posts: 2,185	Re: 1934 fan belt legnth I also had the same fan belt problems some years ago on my original 34. I use a Dayco or Gates or Good Year B54 which is 57"around. You also have to watch the tops of the radiator hoses for fan blade clearance as it is pretty close there. Regards, Kevin.

12-17-2018, 07:47 PM	#5
DavidG Senior Member Join Date: May 2010 Location: southeastern Michigan Posts: 10,601	Re: 1934 fan belt legnth Always a good idea to give the fan a test spin by hand before starting the engine after installing a new fan belt.

12-17-2018, 07:59 PM	#6
whizzernick Senior Member Join Date: Jul 2013 Location: Hayward Ca Posts: 635	Re: 1934 fan belt legnth Sponsored Links (Register now to hide all advertisements) thanks :: I do have a fan belt length checker and belt that I have is 56" I think 57 sounds right thanks again

12-18-2018, 07:23 PM	#8
DavidG Senior Member Join Date: May 2010 Location: southeastern Michigan Posts: 10,601	Re: 1934 fan belt legnth Ouch!

12-19-2018, 09:59 PM	#10
whizzernick Senior Member Join Date: Jul 2013 Location: Hayward Ca Posts: 635	Re: 1934 fan belt legnth I installed napa belt and fit is correct. THANKS AGAIN