1.3 samurai underdrive pulley - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 10-17-2018, 12:53 AM   #1 (permalink)
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1.3 samurai underdrive pulley

I am looking for a single V underdrive pulley for my Samurai. Anyone know who sells one?
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Old 10-17-2018, 12:49 PM   #2 (permalink)
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https://www.rocky-road.com/zukpulley.html
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Old 10-17-2018, 03:17 PM   #3 (permalink)
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They no longer sell them.
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Old 10-18-2018, 03:35 PM   #4 (permalink)
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Old 10-27-2018, 02:26 PM   #5 (permalink)
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Check out Suzuki Racing Development. I bought one of their single underdrive pulleys for my 1.0L Metro motor that I'm installing in my LJ20.

This is on the assumption that the 1.3L Samurai one is the same as a 1.3L Metro engine/crank set-up.

Craig

Last edited by 1x1_Speed_Craig; 10-27-2018 at 02:27 PM.
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Old 10-27-2018, 08:21 PM   #6 (permalink)
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Quote:
Originally Posted by 1x1_Speed_Craig View Post
Check out Suzuki Racing Development. I bought one of their single underdrive pulleys for my 1.0L Metro motor that I'm installing in my LJ20.

This is on the assumption that the 1.3L Samurai one is the same as a 1.3L Metro engine/crank set-up.

Craig
I believe that is a serpentine pulley not a V-belt. Now that you have one does it have enough meat to machine a V belt groove in it?
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Old 10-28-2018, 06:15 AM   #7 (permalink)
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I believe that is a serpentine pulley not a V-belt. Now that you have one does it have enough meat to machine a V belt groove in it?
You're right...mine is for a 3-groove serpentine belt. Sorry.
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Old 10-28-2018, 11:24 AM   #8 (permalink)
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may be a dumb question, why not upsize or downsize the other pulleys such as the alternator? I am guessing far easier to find???
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Old 10-30-2018, 11:38 AM   #9 (permalink)
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may be a dumb question, why not upsize or downsize the other pulleys such as the alternator? I am guessing far easier to find???
The only pullies I can find are stock size pulleys.
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Old 10-30-2018, 12:44 PM   #10 (permalink)
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Why do you need an undersized pulley? Do you run a twin cam fire breathing monster at 10k RPM? What percent underdrive do you need? Did I miss something in your setup that needs underdrive? If I needed one I would spin one out on the lathe. Do you have a buddy who has a lathe? Trade him something to make one or learn how yourself.
Do the math on the pulley setup you want and tell us what you gain by it.
I might be able to help if you really need it.
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Old 11-01-2018, 07:34 PM   #11 (permalink)
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Originally Posted by Warren Welder View Post
Why do you need an undersized pulley? Do you run a twin cam fire breathing monster at 10k RPM? What percent underdrive do you need? Did I miss something in your setup that needs underdrive? If I needed one I would spin one out on the lathe. Do you have a buddy who has a lathe? Trade him something to make one or learn how yourself.
Do the math on the pulley setup you want and tell us what you gain by it.
I might be able to help if you really need it.
I am looking to gain a little power. I am installing a 2 row aluminum radiator with a electric fan. My plan is to be able to run down the highway a little better. With the 2 row aluminum radiator the electric fan should not need to come on and between the underdrive pulley and the loss of the stainless direct drive flex fan I should be able to pick up 6 or 7 hp. That would be a 10% gain in power. I removed the direct drive fan and drove it down the road for a short run and the power difference was nice.
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