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Best thread(s) for the M750 to 900/900SS/1100 etc swap

Started by Rudemouthsky, September 12, 2012, 07:38:21 AM

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brad black

#15
September 15, 2012, 05:03:28 PM
how do the cases differ on the 1100?
Brad The Bike Boy

http://www.bikeboy.org

He Man

#16
September 15, 2012, 05:27:10 PM
the 1100 and 1000 cases are 168mm at the swingarm pivot. the 900 case is slightly larger, around 30mm wider and the SBK specific motors are narrower. the swingarm pivot rod might also be a different size.

Rudemouthsky

#17
September 16, 2012, 08:48:51 AM
Judging from Brad's site it sounds like an early 900SS motor is the way to go. The drilling of the frame to accommodate for the larger engine bolts certainly doesn't seem difficult...sorry if this is a dumb question though, but doesn't that make any of you nervous as hell?
"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs

bigiain

#18
September 16, 2012, 05:30:04 PM
Quote from: howie on September 15, 2012, 09:00:20 AM
Depends.  At some point the engine mounting bolts went from 10mm. to 12, 2001 maybe?  The frame can be made to accommodate the larger bolts.

There's some frame cross member thing too - I can't recall if its the carbed frames which have a crossmember which fouls the FI throttle bodies, or the FI frames crossmember which fouls carbs, but one way or the other doesn't "just work" (though judicious use of a hacksaw, and for some people, a welder to re-fit the cut-out-frame-tube back, "fixes" that problem).

big

brad black

#19
September 16, 2012, 07:15:33 PM Last Edit: September 16, 2012, 07:18:41 PM by brad black
the m600 and st4s cases i have here are 173mm across the swingarm pivot.  how wide is the gap in the later swingarms?

the 1100 cases have the same bearings as all the early motors.
Brad The Bike Boy

http://www.bikeboy.org

brad black

#20
September 16, 2012, 07:20:03 PM
drilling the frame for the larger bolts requires taking a 10 (or probably 10.5mm) hole out to 12mm.  not much change.  biggest hassle is getting nuts inside the early frames i would think.
Brad The Bike Boy

http://www.bikeboy.org

ducrider45

#21
September 19, 2012, 07:35:35 AM
Quote from: howie on September 15, 2012, 09:00:20 AM
Depends.  At some point the engine mounting bolts went from 10mm. to 12, 2001 maybe?  The frame can be made to accommodate the larger bolts.
2002
Cop: "That thing is so nasty I can't bring myself to write you a ticket."

"The democracy will cease to exist when you take away from
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ducrider45

#22
September 19, 2012, 07:37:21 AM
Quote from: brad black on September 16, 2012, 07:20:03 PM
drilling the frame for the larger bolts requires taking a 10 (or probably 10.5mm) hole out to 12mm.  not much change.  biggest hassle is getting nuts inside the early frames i would think.
They fit.
Cop: "That thing is so nasty I can't bring myself to write you a ticket."

"The democracy will cease to exist when you take away from
those who are willing to work and give to those who would not."
Thomas Jefferson


Washington D.C. area riders check out CAM on the local boards.

H-2 CHARLIE

#23
September 19, 2012, 01:22:38 PM
 to me i would upgrade the whole bike with a 900cc bike

hnracing

#24
September 22, 2012, 04:02:29 PM
Just for the record.
My experience is that all engines with needle bearing in the engine for the swingarm are the same.
It do not matter if it is for a M1000 with dss or a S21000 with sss. Same same.
I am running a M900 alu swing to my 1000ds engine.

An alternative to drill the frame is to use a 12mm copper pipe with t=1mm as a bush in the engine.
And use the 10mm engine bolts.

/Henrik
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