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where to get hks pullys


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Aren't standard ones harmonically balanced? I recall reading of them causing issues

Harmonic dampers yes, and yes lightweight ones or more so ones that aren't damper pulleys on the crank can cause more load on the thrust washers, not much of a problem if you replace the bearing shells every so often though.

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Harmonic dampers yes, and yes lightweight ones or more so ones that aren't damper pulleys on the crank can cause more load on the thrust washers, not much of a problem if you replace the bearing shells every so often though.

Thats the one, although I wouldn't fancy rebuilding bottom ends for the sake of a shitty pulley, different story if you were doing a race series or something and liked to overhaul every 'x' hours

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Thats the one, although I wouldn't fancy rebuilding bottom ends for the sake of a shitty pulley, different story if you were doing a race series or something and liked to overhaul every 'x' hours

ACL recommend their bearing shells are changed every 30,000 Km anyway, but it depends how much power your running and what oil clearences you run as to what kind of service schedule you stick to. I was going to get ATI to make me up a custom lightweight crank damper pulley, but that's something I'll look into when I get closer to building the motor.

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ACL recommend their bearing shells are changed every 30,000 Km anyway, but it depends how much power your running and what oil clearences you run as to what kind of service schedule you stick to. I was going to get ATI to make me up a custom lightweight crank damper pulley, but that's something I'll look into when I get closer to building the motor.

Realistically 30k km is not where we'd be hoping to rebuild the bottom end though, I guess it's just a figure to cover ACL's back. Sounds interesting, will make for some good reading when you get updating and into the building side. Best of luck!

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Realistically 30k km is not where we'd be hoping to rebuild the bottom end though, I guess it's just a figure to cover ACL's back. Sounds interesting, will make for some good reading when you get updating and into the building side. Best of luck!

I agree, they say to replace them to maintain a good condition crank. I understand what their saying though, I would rather be replacing a set of shells that cost £80 than replacing a crank, especially the genuine 4ET crank which seem to be getting harder to find.

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I agree, they say to replace them to maintain a good condition crank. I understand what their saying though, I would rather be replacing a set of shells that cost £80 than replacing a crank, especially the genuine 4ET crank which seem to be getting harder to find.

Yeah in that context it's a no brainer but when you consider the amount of work to change them then it's a bit of a killer lol.

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