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Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2933
Location: United States, New York, Ossining
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 Posted: Thu Jul 07, 2011 1:25 pm Post subject: |
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| Noah Stark wrote: | | ****The mainshaft with the wider gear is from a 5-spd tranny. I have a few of those here myself. |
Actually it's showing the width of the later cases.
I pulled it from a set of my cases. The later cases are wider, the early mainshaft will work, but it has to be shimmed.
23210-KZ4-890 Pre 95 MAINSHAFT (narrow)
23210-KZ4-A10 1997 6 Speed MAINSHAFT (wide)
23210-KZ4-A90 1999 5 Speed MAINSHAFT
What was the length of the shaft in his cases?
CR
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Juan Jaramillo
Joined: 20 Jan 2010
Posts: 235
Location: United States, Virginia, Roanoke
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| Posted: Thu Jul 07, 2011 1:36 pm Post subject: |
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| Mike Goebel wrote: | Juan,
You should know by now that you should always consult with Chris before doing anything and I mean anything. BTW have you gone to the bathroom today Juan? Could be be a great oppertunity to get in your first consult!
Mike G. |
I am here right now Mike, bring it on!
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Juan Jaramillo
Joined: 20 Jan 2010
Posts: 235
Location: United States, Virginia, Roanoke
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| Posted: Thu Jul 07, 2011 6:48 pm Post subject: |
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| Chris Reinhardt wrote: | There's and early and a late shafts...
| Chris Reinhardt wrote: | Just to make the dead horse is even more deader!!! Here's some pics I have from two different mainshafts.
CR |
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Did you zero that thing mine is more like 107mm
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Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2933
Location: United States, New York, Ossining
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| Posted: Thu Jul 07, 2011 7:24 pm Post subject: |
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Please, I'm German!
You must have went the end of the shaft.
Measure outside 1st, to the step of the oposite side, not including the smaller diameter that goes in the bearing.
Basically iside to inside of each bearing.
Then measure from inside of the gearbox from the gasket surface to the top of the mainshaft bearings, add the two.
CR
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Juan Jaramillo
Joined: 20 Jan 2010
Posts: 235
Location: United States, Virginia, Roanoke
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| Posted: Thu Jul 07, 2011 8:15 pm Post subject: |
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| Chris Reinhardt wrote: | Please, I'm German!
CR |
You should know by now that you should always consult with Chris before doing anything and I mean anything.
Now I get it Mike.
Chris, the one that was on the engine is the 97.50mm so is a pre 95 and you are right about the different serial numbers before 96 and 96-97
From what I heard and read before, any transmission from 90-97 fits 99 cases.
http://www.metal-matrix.com/stockmoto/index4.html
But I can be completely wrong "I'm not German"
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Mike Goebel
Joined: 28 Jul 2001
Posts: 5766
Location: United States, California, Winnetka
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| Posted: Thu Jul 07, 2011 9:23 pm Post subject: |
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| Juan Jaramillo wrote: |
But I can be completely wrong "I'm not German" |
This is understandable
Mike G.
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Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2933
Location: United States, New York, Ossining
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| Posted: Fri Jul 08, 2011 5:08 am Post subject: |
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| Juan Jaramillo wrote: | Chris, the one that was on the engine is the 97.50mm so is a pre 95 and you are right about the different serial numbers before 96 and 96-97
From what I heard and read before, any transmission from 90-97 fits 99 cases.
http://www.metal-matrix.com/stockmoto/index4.html |
Like I'm trying explain, there are two different width cases, and the difference is almost 2mm. Yes you can put a narrow gearbox in a wide case "IF" it's shimmed correctly. But you can't put a wide gearbox in a narrow case.
So you have a narrow gearbox, did you measure your cases to see what they are?
CR
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Mike Pham
Joined: 18 Sep 2009
Posts: 197
Location: United States, Virginia, Woodbridge/Arlington
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| Posted: Fri Jul 08, 2011 9:30 am Post subject: |
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Chris is explaining it great, I had this problem when I assembled my stock moto, I had a gearbox from an earlier CR with the shorter shaft and just assembled it as described in the manual without giving any attention to how much play there would be in the shafts. The engine shifted fine for one lap and then boom, I had a problem on my 5-6 upshift and my 6-5 downshift upon inspection I found wear similar to what you have Juan. My fix was just shimming the shafts to reduce the play.
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Juan Jaramillo
Joined: 20 Jan 2010
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Location: United States, Virginia, Roanoke
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| Posted: Fri Jul 08, 2011 9:53 am Post subject: |
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How do I meassure the cases?
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Chris Reinhardt
Joined: 29 Aug 2002
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Location: United States, New York, Ossining
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| Posted: Fri Jul 08, 2011 10:12 am Post subject: |
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| Juan Jaramillo wrote: | | How do I meassure the cases? |
It's tough to get it real accurate, but to see almost 2mm difference I think you can jury rig it.
Take a metal ruler like from a combo square, lay it on it edge across the case half. Take you depth gauge (vernier calipers) land it on the top edge of the ruler, extend it down to the top edge of the bearing. Subtract the width of the ruler, add both case halves together. Make sue the edge of the ruler is square on the case, you should be able to get it.
It's going to be more than the 97.50mm you measured on the shaft, should be way less than 99mm.
CR
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Anthony Iuzzo
Joined: 23 May 2006
Posts: 296
Location: United States, Long Island, New York,
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| Posted: Fri Jul 08, 2011 1:18 pm Post subject: |
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| mainshaft....well if the cases are silver and NOT stripped or blasted, you have a 95' and newer cases........96' and 97' cases used the longer mainshaft...90'-95' cases would use the shorter main shaft......Take a pic of the base gasket surface of your cases so we can see the transfer port shape.........angled tranfers (90'-97') straight transfers (98'-02') point being if you have the straight transfer ports you need the longer mainshaft as well as if they are 96'-97' (silver angled transfer port) cases, I am confusing myself..........the only silver case that would use the short mainshaft would be 95' there is no serial # on your cases? |
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Juan Jaramillo
Joined: 20 Jan 2010
Posts: 235
Location: United States, Virginia, Roanoke
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| Posted: Fri Jul 08, 2011 5:47 pm Post subject: |
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I am confusing myself.......
You tell me, I am the newbie here. 
Is this?
No serial number on cases
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Anthony Iuzzo
Joined: 23 May 2006
Posts: 296
Location: United States, Long Island, New York,
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| Posted: Fri Jul 08, 2011 7:57 pm Post subject: |
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| OK from looking at your transfer port shape (square) you have 98-02 cases, no serial number probably means they were replacement cases (maybe a kit motor) not from a bike engine......You need the later longer 96'-97' mainshaft part number 23210-KZ4-A10. The early gears will fit and work on the later shafts but make sure the shims, spacers, clips are all there and in their proper place. I just went through the same problem with a 6 speed 97' tranny that I bought here on the forum, the countershaft was bent (never seen that) and the mainshaft was the early style, so much for a good used tranny, cost me about $450 when I was done.... |
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Juan Jaramillo
Joined: 20 Jan 2010
Posts: 235
Location: United States, Virginia, Roanoke
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| Posted: Fri Jul 08, 2011 8:52 pm Post subject: |
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Thank you so much guys for all the info.
Anthony, can I just shim the shaft to fit on the bigger case like Chris and Mike mentioned? if so, what is the best way to do it? You just put a spacer or washer of required size or what?
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Anthony Iuzzo
Joined: 23 May 2006
Posts: 296
Location: United States, Long Island, New York,
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| Posted: Sat Jul 09, 2011 3:24 am Post subject: |
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Juan, you can shim the shaft to fit, I think you need a .030 and .060 shim to make up the 2mm or so difference, I have never got it to work properly with shims, maybe chris or mike could explain the shim method better, otherwise the proper shaft is about $80. I would just buy the correct main shaft and keep the shorty as a spare........copy and paste the address below.........
http://www.hondapartspitstop.com/pages/OemParts#/Honda/CR125R_A_(97)_MOTORCYCLE%2c_JPN%2c_VIN%23_JH2JE010-VM800001/TRANSMISSION/CR125R-97-JPN-A/2Y14KZ4LKZ44E0900BE |
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