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Yz 125 Engine case help!

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Hi everyone. I'm about to buy a yz 125 on Friday, I've been told the oil drain bolt is held in by jb quickweld so that needs sorting straight away. I'm looking at crankcases on eBay. I've found a pair on eBay that are from a 1999 yz and mines a 2002 do you know if they are the same? Also what side is the oil drain bolt? Left or right? Thanks in advance!

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3 minutes ago, DanBradley said:

 

Hi everyone. I'm about to buy a yz 125 on Friday, I've been told the oil drain bolt is held in by jb quickweld so that needs sorting straight away. I'm looking at crankcases on eBay. I've found a pair on eBay that are from a 1999 yz and mines a 2002 do you know if they are the same? Also what side is the oil drain bolt? Left or right? Thanks in advance!

 

I have an 04. I just did mine 2 months ago.  You need the right side (the more expensive one lol). I believe 02 - 04 are the same. Make sure the numbers are the same.  I think the size of the swing arm/motor mount bolt is different 

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I have an 04. I just did mine 2 months ago.  You need the right side (the more expensive one lol). I believe 02 - 04 are the same. Make sure the numbers are the same.  I think the size of the swing arm/motor mount bolt is different 


Thanks mate

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It can be welded also. My 250 was the same way. $30 to have welded up. Like new sorta! Of course the case has to be split before welding and the pieces all there.

IMG_20170722_100640907.jpg

IMG_20170717_151253561.jpg

IMG_20170717_153811096.jpg

IMG_20170722_100640907.jpg

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It can be welded also. My 250 was the same way. $30 to have welded up. Like new sorta! Of course the case has to be split before welding and the pieces all there.
IMG_20170722_100640907.jpg.f731677f9d195ad366b7ac4d664c9f99.jpg
IMG_20170717_151253561.jpg.be27558772694d8db6e19c422559f90d.jpg
IMG_20170717_153811096.jpg.754ea1d6b88fc17b97ef412e66436967.jpg
IMG_20170722_100640907.jpg.9a32d2b139129668f3be5c93aac6bbb7.jpg


Cheers mate. This might be an option if I can't find a second hand case on eBay. $30?! Over here in the uk it would be more like £150! Lol

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20 minutes ago, DanBradley said:

 


Cheers mate. This might be an option if I can't find a second hand case on eBay. $30?! Over here in the uk it would be more like £150! Lol

 

I hear yea! Beauty of it was once the case was split it was welded within the hour and ready to go! Waiting a week on parts in no fun. :banghead:

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All these are a direct fit

 

2002 YZ125 (YZ125P) - Crankcase

2002 YZ85_YZ125PSK RACE KART (YZ125PSK) - Crankcase Yz125

2002 YZ85_YZ125PSK RACE KART (YZ85PSK) - Crankcase Yz125

2003 YZ85_YZ125PSK RACE KART (YZ125RSK) - Crankcase Yz125

2003 YZ85_YZ125PSK RACE KART (YZ85RSK) - Crankcase Yz125

2002 YZ85_YZ125PSK RACE KART (YZ125PSK) - Crankcase Yz125

2002 YZ85_YZ125PSK RACE KART (YZ85PSK) - Crankcase Yz125

2003 YZ125 (YZ125R) - Crankcase

2003 YZ85_YZ125PSK RACE KART (YZ125RSK) - Crankcase Yz125

2003 YZ85_YZ125PSK RACE KART (YZ85RSK) - Crankcase Yz125

2004 YZ125 (YZ125S1) - Crankcase

3 sets on US ebay    http://www.ebay.com/itm/2003-Yamaha-YZ-125-Crankcases-Engine-Cases-Matching-5NY-15111-01-00-5NY-15121-0-/322632395353?hash=item4b1e63aa59:g:wO4AAOSwdutZg4H6&vxp=mtr

http://www.ebay.com/itm/2002-Yamaha-YZ125-Engine-Cases-Motor-Block-Center-Left-Right-Fits-02-2004-YZ-125-/302412665333?hash=item46693311f5:g:sS8AAOSwk-pZjjV1&vxp=mtr

http://www.ebay.co.uk/itm/02-YZ125-YZ-125-Engine-Cases-Crank-Case-Set-50-/190926609272?epid=1623737121&hash=item2c741cdb78:g:cKsAAOxyfpJSVuN2

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