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61karmann
Samba Member
Joined: January 01, 2004
Posts: 157
Location: south San Francisco
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 Posted: Sat Oct 25, 2025 11:26 am Post subject: Pulley size 36hp 40hp |
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In my 36hp, the generator pulley is 98mm. My 6v generator is from a 1960 so thats a 40hp.
Would anyone recommend using a 40hp pulley at 107mm?
Or the 36hp at 98mm? Im not sure if the newer generator needs to be accommodated for, or the fan cooling is more important
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pondoras box
Samba Member
Joined: March 22, 2004
Posts: 1863
Location: Warren, PA
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| Posted: Sat Oct 25, 2025 11:42 am Post subject: Re: Pulley size 36hp 40hp |
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I know people use larger pulleys opposite of the power pulley theory to get better cooling. But you got to be careful not to over drive your fan the can explode. But I don’t really think it’s going to be a issue on a stock 36 horse.
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Eric&Barb
Samba Member
Joined: September 19, 2004
Posts: 26197
Location: Olympia Wash Rinse & Repeat
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| Posted: Sat Oct 25, 2025 3:26 pm Post subject: Re: Pulley size 36hp 40hp |
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| 61karmann wrote: |
Would anyone recommend using a 40hp pulley at 107mm?
Or the 36hp at 98mm? Im not sure if the newer generator needs to be accommodated for, or the fan cooling is more important |
Would first figure out if you have a cooling problem EG what is the highest oil temp you are getting to in the summer heat, especially when climbing a long slope uphill.
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