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  #1 (permalink)  
Old 04-29-2012, 09:35 AM
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Ultima belt drive installation problem

I'm installing an ultima 3" belt drive and I ran in to a problem. It seems that the clutch basket isn't going on to the trans shaft as far as it's supposed to. I know the starter ring gear doesn't sit flush with the motor plate when installed correctly, but mine sticks way out. It sticks out so far that when I try to install the starter cover plate it causes binding and the clutch basket won't turn any more. Has anyone else had this problem or have any suggestions on how to fix it? I'm running a Ultima 113 and a jim's 5 speed. Thanks in advance.
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Old 04-29-2012, 09:55 AM
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This really isn't a good view, But you may be able to see how far the ring gear should stick out. I had to give it a few zips with an impact to get it seated fully.

BDL's are alot looser (spines). Ultima makes their tolerances a little tighter to avoid spline washout.

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Old 05-01-2012, 04:34 PM
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Yup same problem here. I spaced the jackshaft cover off the motor place with small washers and used the jackshaft fix and spaced it out to get it closer to the ring gear. no problems now.
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Old 05-01-2012, 05:09 PM
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Trace out a thin sheet metal shim from the back of the starter gear support and drill some holes in it for a shim Or if it's real small you can just use something like grey 3m gasket material and sandwich that in between.
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Old 05-01-2012, 05:16 PM
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I just used a crush washer from a banjo bolt on each bolt. Hardly noticeable and worked fine. Took about 1 minute
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Old 05-01-2012, 08:57 PM
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make sure splines are clean all the way if not that can cause the issue.
Question Are you just changing belt drives or are you going from closed to open primary
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Old 05-02-2012, 04:49 AM
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Sounds like you may have to remove some material from clutch hub , use a die grinder and shave a little out of clutch hub untill it fits perfect.... ultima fit ultima.... its the only way to make it fit right. then your belt and pulleys will ride true as well. good luck mate..
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Old 08-29-2012, 02:40 PM
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So, what did you end up doing??
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Old 12-19-2018, 04:58 PM
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I know this is a VERY old thread but I just ran into this... I ordered a new 3.35 basket and hub assembly with stainless inserts and the new basket will not go all the way on the trans shaft.. After looking at it some material needs to be cleared off of the hub because the trans shaft is slightly flared toward the transmission and there is just a slight bit of splines still showing in the hub.. Like Batto mentioned.. just use a small grinder and zip that crap off the hub.. Fits like a glove now!
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