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Old 07-06-2012, 11:39 PM   #21
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Default Re: Polaris engine swap?

it should have tilted foward more.it needs to have mounts cut out and redone.rushed too much installing it.it runs fine and doesnt seem to have any oiling or fuel problems though.its a polaris sportsman 400 4 stroke motor,around 28 to 30 horsepower according to the specs,425cc.it needs to be professionally clutched ,i have tried to tune the clutch but it still needs work.i cut the pig taisl off my torque yami spring in the secondary tonight.lost some top speed,45mph on flat ground picked up some torque and noise from the spring bieng a little loose.need a spring softer than yami torque spring from buggies unlimited.
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Old 07-07-2012, 01:05 AM   #22
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Default Re: Polaris engine swap?

Quote:
Originally Posted by regalrcr View Post
it should have tilted foward more.it needs to have mounts cut out and redone.rushed too much installing it.it runs fine and doesnt seem to have any oiling or fuel problems though.its a polaris sportsman 400 4 stroke motor,around 28 to 30 horsepower according to the specs,425cc.it needs to be professionally clutched ,i have tried to tune the clutch but it still needs work.i cut the pig taisl off my torque yami spring in the secondary tonight.lost some top speed,45mph on flat ground picked up some torque and noise from the spring bieng a little loose.need a spring softer than yami torque spring from buggies unlimited.
I would like to see a video of that cart in action! Have you checked the site sponsors here for springs and clutch parts?
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Old 07-07-2012, 02:52 AM   #23
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Default Re: Polaris engine swap?

I want a video too
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Old 07-07-2012, 08:18 AM   #24
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Default Re: Polaris engine swap?

Quote:
Originally Posted by regalrcr View Post
it should have tilted foward more.it needs to have mounts cut out and redone.rushed too much installing it.it runs fine and doesnt seem to have any oiling or fuel problems though.its a polaris sportsman 400 4 stroke motor,around 28 to 30 horsepower according to the specs,425cc.it needs to be professionally clutched ,i have tried to tune the clutch but it still needs work.i cut the pig taisl off my torque yami spring in the secondary tonight.lost some top speed,45mph on flat ground picked up some torque and noise from the spring bieng a little loose.need a spring softer than yami torque spring from buggies unlimited.
Cut the "pigtails" off the secondary spring??

What are you saying exactly?

If you mean you cut the ends off you ruined the spring.

Secondary springs are not compression springs. They are twist springs. They do their job via the ability to turn. They do compress but that is just because of the secondary movement.

opsled

PS, If you are running it that way you could destroy the secondary, the belt and possibly other things if the belt comes off an gets tangled up.
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Old 07-08-2012, 11:17 AM   #25
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Default Re: Polaris engine swap?

i understood they were twist springs in stock applications,but my buggies unlimited torque spring had no tabs to lock in.it was basically a stiff spring.i did cut the ends off,because the clutch wasnt opening like i wanted.my secondary clutch wasnt opening fast enough,it works better now but i know it needs a different spring.i will try and get a video up but it would have to be from my phone
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Old 07-08-2012, 12:29 PM   #26
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Default Re: Polaris engine swap?

Quote:
Originally Posted by regalrcr View Post
i understood they were twist springs in stock applications,but my buggies unlimited torque spring had no tabs to lock in.it was basically a stiff spring.i did cut the ends off,because the clutch wasnt opening like i wanted.my secondary clutch wasnt opening fast enough,it works better now but i know it needs a different spring.i will try and get a video up but it would have to be from my phone
I'd bet if you tried any other torque spring (other then Bu) you'd be satified. I installed one for a customer (he had already bought it) and it's so stiff, I could bearally compress it to get the holder on it! I kinda like to use the Yamaha Umax spring, still has the tabs to set the pre load in the sliding sheave and spring seat, but its much longer, so pre load is stiffer. Just like car's ect, you can have all the engine power, but if you cant get it to the ground, thats why we tinker/build. Good luck on the awnser to your's
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Old 07-08-2012, 02:57 PM   #27
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Default Re: Polaris engine swap?

Are you sure this "torque spring" you have isn't a spring for the primary??

Primary springs work off compression, secondarys off of twist.

I don't work on many carts but have been working on CVT sleds for years. I've never seen a compression spring used in a secondary and have no idea how it would work properly without the proper spring. To upshift and backshift smoothly the movable secondary sheeve needs to stay in contact with the helix ramps at all times. A compressin spring has no means to do this job. A twist spring does.

Don't make sense,
opsled
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Old 07-08-2012, 11:25 PM   #28
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Default Re: Polaris engine swap?

Quote:
Originally Posted by opsled View Post
Are you sure this "torque spring" you have isn't a spring for the primary??

Primary springs work off compression, secondarys off of twist.

I don't work on many carts but have been working on CVT sleds for years. I've never seen a compression spring used in a secondary and have no idea how it would work properly without the proper spring. To upshift and backshift smoothly the movable secondary sheeve needs to stay in contact with the helix ramps at all times. A compressin spring has no means to do this job. A twist spring does.

Don't make sense,
opsled
hope not, its been in there awhile,back when it had a stock motor!! maybe it is a primary spring but i cant remember my g16 engine even having a sping in the primary clutch.i have to out to the shop and look its still laying in the corner.
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Old 07-08-2012, 11:27 PM   #29
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Default Re: Polaris engine swap?

Quote:
Originally Posted by smallblock450sl View Post
I'd bet if you tried any other torque spring (other then Bu) you'd be satified. I installed one for a customer (he had already bought it) and it's so stiff, I could bearally compress it to get the holder on it! I kinda like to use the Yamaha Umax spring, still has the tabs to set the pre load in the sliding sheave and spring seat, but its much longer, so pre load is stiffer. Just like car's ect, you can have all the engine power, but if you cant get it to the ground, thats why we tinker/build. Good luck on the awnser to your's
can you give me some part numbers on some springs you would reccomend.i bought a white one from polaris but it wasnt stiff enough .dont want to waste money on a bunch of springs that dont work.thanx
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Old 07-08-2012, 11:34 PM   #30
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Default Re: Polaris engine swap?

i will try and get a video up before i take it apart,going to a raptor 660 front suspension and brakes,and 3 link the rear with new motor mounting .and probably some performance upgrades,jet,programmer,pipe.but i would like to get clutch closer first.
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