Primary clutch rebuild

[Brock]

Pic is of old parts off primary.
What I've noticed in the past few years. The spider buttons new aren't as thick as used ones (.250"-.245"),so you have to use the 0.002",0.006", 0.0010" spacers.
The warn bushings ID is better and smaller then new bushings ID . Not much, one or two thousands of an inch.
Just an observation as new should have tighter tolerances in my mind. Not same as used or bigger.

 

[racerdave]

Seems to make rebuiliding pointless till they are really rattling then.

 

[Brock]

The part I don't like is the moveable sheave and cover bushings. They should have tighter tolerances then the used ones taken out??

 

[racerdave]

Are you using oem bushings or aftermarket?

 

[Brock]

Always oem

I measure used bushings ID before I change them . Then measure new installed. The new are one to two thousands bigger ID then used. Not a big deal. But tolerances should be tighter as it's a vesple bushing and will wear.

 

[James carnahan]

Just had a guy bring a 2016 800s primary stuck wide open 1500 miles never seen this except when assembled to tight. No blown belts. Any ideas