motor swap

[darkduc7]

i see that many of your questions have been answered, but if you have any others, pm me. ive done a couple of these swaps, and i've run into the most frustrating of roadblocks and can tell you all about them. haha.  your swap is fairly simple, compared to some. 

[bp.leep]

you'll need 900m headers, the ss ones are different thru the swingarm and the 750 ones don't really fit due to the 900's longer cylinders.

just for the rear/vertical cylinder or both
does anybody else know if ill need 900m headers?

I will find out eventually when i go to put it together just trying to gather up everything before i start so there's no hang time

[ducpainter]

just for the rear/vertical cylinder or both
does anybody else know if ill need 900m headers?

I will find out eventually when i go to put it together just trying to gather up everything before i start so there's no hang time

You really don't want to second guess Brad.

He has a wealth of experience and really knows.

[bp.leep]

do i need the rear/vertical header or both

[ducpainter]

do i need the rear/vertical header or both

Both.

The deck height on the 900 motor is 'higher' enough that the 750 headers won't work.

[junior varsity]

Both - its like one piece where you can divide it for the vertical header. I've got a set of stock M900 headers I'll sell you, they are just sittin' on a shelf in the garage.

[bp.leep]

What would I have to do to use the showa adj. rear shock with reservior off of 900ss (piggyback style) on my m750 frame/swingarm with m900 headers? 02-05 swing arm swap
...my m750 has a sachs unit

[junior varsity]

If you've got a hooped swingarm model, the piggyback reservoir on many shocks won't fit. For example, the Ohlins and Penske shocks available for my M900 (hooped swingarm) use a tethered reservoir that you mount on the frame.

The SS shock mounts from the swingarm brace to a section of frame just behind/above the vertical cylinder.
The 02-05 swingarms don't use the hoop linkage and i'm not sure about the top shock mount.

[Ddan]

They Monsters have all got the rocker for the top mount, so the SS shock won't work as it is, and I don't know if you could make it work, or if it would be worth it.

[ducpainter]

What would I have to do to use the showa adj. rear shock with reservior off of 900ss (piggyback style) on my m750 frame/swingarm with m900 headers? 02-05 swing arm swap
...my m750 has a sachs unit

The valving and spring rate for the cantilever shock are all wrong for the linkage system of a monster.

It's possible to change the valve and spring to Monster specs as the length is the same.

If it's worth it is a personal decision.

[bp.leep]

Thanks for all your input I think all of my questions have been answered. Sounds like easy motor swap ,front end swap, rim swap, new clutch (reason guy sold it), wiring harness (none on bike), m900 headers, new rear shock (any suggestions), fresh paint and powder.  Ill post pics of major changes and complete project...

... when im done i get to build a 2nd bike with all of the left overs.....

Thanks

[junior varsity]

Penske 8983! :-D (I love mine)

[ducpainter]

Ohlins DU-440

[junior varsity]

Speaking of which, I've only ever heard good things about the Penske and Ohlins rear shocks.

I think you'd be in a real minority if you picked up a Bitubo or Wilbers or some other. One advantage to the main-line shock absorbers is the amount of vendors you'll find locally to help you rebuild it in the future, etc.

I kind of think of good suspension as an actual investment in the motorcycle, one of the things that holds its value, its not really a wear part. Contrasted with brake rotors, pistons, clutch parts, etc.