C90 final drive plug thread repair? - Page 2 - Suzuki Volusia Forums : Intruder Volusia and Boulevard Forum
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post #11 of 34 (permalink) Old 03-28-2019, 03:35 PM Thread Starter
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Took it in to my local shop. Suzuki doesn't even make the part any more, which is disappointing. Also they were going to charge me at least four hours of labor to get into it (which seems highly excessive). So I ordered a good condition final drive off ebay. (https://www.ebay.com/itm/Suzuki-05-0...e/292578468467) -- I'll just pull the tire off, pull my final drive off, and put the new one on in its place. I mean, it has 14k less miles on it than the one on the bike, so it has to be an improvement, right?



I'll work on repairing the drain hole on mine and either sell it or keep it as a spare.
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post #12 of 34 (permalink) Old 03-28-2019, 04:19 PM
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Originally Posted by elricfate View Post
Actually it's a self tapping reamer tap and a spark plug helicoil insert with crush teeth to assist in keeping it in place. It's basically made for spark plug thread repair. But yea, it would go too deep.





Trying to find an oversize in 14mm with a 1.25 thread pitch is seeming like an impossibility, which is odd given the ubiquity of 1.50 thread pitched bolts. I may have to bite the bullet and pay someone to just drill it and re-tap it at a mechanic, which I hate to do because that's not going to be cheap.



I did find a pdf online about a guy who had the same problem and replaced it with a 14mm x 1.50 piggyback, he just had to start the 1.50 threads with a tap and then it bit in and did the rest. That seems like an okay alternative. I'll give the mech a call over at Iron Pony and see what they have in terms of an estimate for the repair. If it's under $300, it would be worth it to get it done right. Or hell, for that much I might consider just getting another final drive and installing it, now that I know it comes out as one solid unit.

Here is an oil plug... m14 x 1.25, magnetic. It is for ford trucks (?!), but it should be ok for your application... Again, you've already bought a new final drive.

https://www.ebay.com/itm/M14X1-25-MA...ss!11229!US!-1

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post #13 of 34 (permalink) Old 03-28-2019, 04:21 PM Thread Starter
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Quote:
Originally Posted by FireManC50 View Post
Here is an oil plug... m14 x 1.25, magnetic. It is for ford trucks (?!), but it should be ok for your application... Again, you've already bought a new final drive.

https://www.ebay.com/itm/M14X1-25-MA...ss!11229!US!-1

That's not an oversize though?
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post #14 of 34 (permalink) Old 03-28-2019, 04:28 PM
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Originally Posted by FireManC50 View Post
Here is an oil plug... m14 x 1.25, magnetic. It is for ford trucks (?!), but it should be ok for your application... Again, you've already bought a new final drive.

https://www.ebay.com/itm/M14X1-25-MA...ss!11229!US!-1
If you decide to make your old one for an M141.5, scroll down from the ebay one listed above and under "similar items" there's an M141.5 magnetic.

I can head East or West, it doesn't matter as long as it's on 2 wheels.
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post #15 of 34 (permalink) Old 03-28-2019, 05:09 PM
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You would have to go to an M16 self tapping. If your current hole is M14 and stripped then the hole diameter is .550+

An M16 is .630 on the major diameter.

You could also just tap it with a 3/8" NPT pipe tap and throw a tapered plug in there, (this is probably what I would do if the bike was here), 3/8" pipe plugs are available at any hardware store.

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post #16 of 34 (permalink) Old 03-29-2019, 10:22 AM
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this thread is like sitting in on a surgeons group discussion on possible options for saving the final drives life... me...totally clueless as to what any of this really means...hope something works....but proof that ask for help here and you will get some advice.
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post #17 of 34 (permalink) Old 03-29-2019, 11:19 AM Thread Starter
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Well, I did a couple things. I bought that final drive (which will be here tomorrow), but I also bought M15x1.25 self tappers, and an M14x1.25 "stripped thread repair" plug. Gonna try the latter, first, and failing that, re-cut it to the 15mm bolts. If either of those works, I'll maybe see about reselling the final drive. We'll see. Not too bad having a couple options.
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post #18 of 34 (permalink) Old 03-29-2019, 11:21 AM Thread Starter
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Also I appreciate all the advice here, I really do. I wish to hell more people had C90s (or at least that google indexed more C90 sites)
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post #19 of 34 (permalink) Old 03-29-2019, 12:25 PM
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Quote:
Originally Posted by elricfate View Post
Also I appreciate all the advice here, I really do. I wish to hell more people had C90s (or at least that google indexed more C90 sites)


There are a few with C90's on here. DCinCT is on his second one and once in a while has been known to supply a useful tidbit, (the rest of his posts are useless dribble). Stick around and you'll be one of the knowledgeable C90 owners here.


Where are you from??
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post #20 of 34 (permalink) Old 03-29-2019, 08:30 PM
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found a lot of good info here

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Whats the big hurry...slow down and enjoy the ride!

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