making a 17mm swingarm hole in a 87 motor
making a 17mm swingarm hole in a 87 motor
Anyone know how to make the 15mm hole into a 17 without spilting cases? Adam told me it can't be drilled because the collars are hardened. I have a drill press and access to machine shops.
Have the 87' bushings/collars removed and have the cases bored to accept the 17mm bushings/collars. That is what I did to my 88' and I used the bushings/collars from the 98' CR250 that came out of the frame.
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- dannygraves
- Posts: 8020
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x2, only I just used a 13/16" drill bit.Rue wrote:Have the 87' bushings/collars removed and have the cases bored to accept the 17mm bushings/collars. That is what I did to my 88' and I used the bushings/collars from the 98' CR250 that came out of the frame.
'09 kx450f 4-Poke
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Gen-4 trail bike --SOLD--
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Gen-1 built dunes bike --SOLD--
'05 klx110 --SOLD--
'95 pw80
I used a drill bit as well.
Its a little snug, you have to ream a little.
I cracked the case on one motor tapping the CR 250 bushings in.
Just tap them out, ream with 13/16 bit, and tap in the CR250 bushings.
Easier than my sister!
Its a little snug, you have to ream a little.
I cracked the case on one motor tapping the CR 250 bushings in.
Just tap them out, ream with 13/16 bit, and tap in the CR250 bushings.
Easier than my sister!
Yah, I'm from Saskatchetoon!
MRE 02 250/500 conversion, pulse injector, twirp porting, coolhead, MRE ignition, blah blah blah blah... www.millarengines.com
MRE 02 250/500 conversion, pulse injector, twirp porting, coolhead, MRE ignition, blah blah blah blah... www.millarengines.com
- britincali
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- 87CR500Rider
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- asteroid500
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i made mine because during the dummy fitting process it was a prick to get those fukcn washers in (the spacers).
So now my spacers ARE my spriggot bushs
http://www.bannedcr500riders.com/board/ ... highlight=
So now my spacers ARE my spriggot bushs
http://www.bannedcr500riders.com/board/ ... highlight=
"not speeding officer".....qualifying
CR250 97
CR500 AF 99 (in progress)
CR500 AF CR G-4
CR500 1985 true legend
RGV250 96 X2
GSXR600 07 TRACK BIKE
VH Commadore cup car (race)
CR250 97
CR500 AF 99 (in progress)
CR500 AF CR G-4
CR500 1985 true legend
RGV250 96 X2
GSXR600 07 TRACK BIKE
VH Commadore cup car (race)
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making a 17mm swingarm hole in a 87 motor
I tried taking home a drill bit and reamer to attempt doing it without splitting the cases and about broke my arms. Split the cases and took them to work and had them machined out on a lathe and he said " they were harder than a preacher's dick at a double wedding". It could hang up in the engine and brake the cases like someone said. Hoping to get mine cranked real soon.
Craigus
Craigus