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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: vince in milwaukee on September 16, 2015, 12:55:56 PM

Title: 93 K75 woes, opinions wanted
Post by: vince in milwaukee on September 16, 2015, 12:55:56 PM

Hello All.  Been a really long time since I've posted - working nights (finally on days) and family commitments will do that.  Anyways, here goes.  The good:  recent complete service down in Chicago to include new tires and some repairs to the tune of 2 large.  The bad:  about a month ago second and forth gears wont engage and grind.  More bad:  I'm about 99.9% sure that it's my fault from something dumb I did 2 years ago (they didn't go near the xmission or even change the lube).  Anyhow, I now have this 500lb paper weight sitting in my garage that I can't use.  So, do I source a good used one off of ebay (or on here?), part it out (it's cosmetically challenged but only has 56k), or sell it for peanuts and possibly move on to a new BMW or other European bike?   

Title: Re: 93 K75 woes, opinions wanted
Post by: Freelancer on September 16, 2015, 02:28:37 PM

Well, you can pick up both motor + trans for $350 on ebay right now(freight shipping). Seems cheap compared to the service and you get a spare motor. :2thumbup:

Or you could make a Franken project by getting a '91 &later k100 trans and rear end. Viola! A paralever K75.

Hope you keep her running,
Freelancer

Title: Re: 93 K75 woes, opinions wanted
Post by: vince in milwaukee on September 16, 2015, 04:21:05 PM

PM sent. 

Title: Re: 93 K75 woes, opinions wanted
Post by: TimTyler on September 16, 2015, 04:42:15 PM

I'd replace the gearbox with a good used one, and do a spline lube / clutch check while you're in there.

The gearbox is actually an easy thing to replace. It might take you a whole weekend but it's not rocket science.

Search the forum for "clutch spline lube".

Title: Re: 93 K75 woes, opinions wanted
Post by: Chaos on September 16, 2015, 05:50:27 PM

+1 on used gearbox.  Probably your most cost effective option if the rest of the bike is decent.

Title: Re: 93 K75 woes, opinions wanted
Post by: vince in milwaukee on September 16, 2015, 08:05:04 PM

Thanks everyone.  That's the route I was planning (replace with a used box), but just wanted to see what the folks on this board had to say.  In the mean time, I still have my Moto Guzzi to ride for the remainder of the season. 

Title: Re: 93 K75 woes, opinions wanted
Post by: K75RT Keith on September 18, 2015, 02:04:47 PM

Mr. Monkeyclaw in Appleton might be a source for a trans if he has a K bike. 

Pretty much any K75, k100 or K1100 trans will fit.   The only difference is color and the paralever tans has additional 2 drilled holes for mounting the paravever.