Frame Up Monster Build

[Speeddog]

My M750 carbie flywheel started out at 2052g, and ended up at 1726g after extending the trigger lump and a good bit of lathe work to lighten it.
I could have lightened it more, if I hadn't run out of time on the lathe I was 'borrowing'.
It's certainly not 'too light'.

I thought I weighed the Nichols unit, but I can't find that info.

IE flywheel would be easy to cut down.

[clubhousemotorsports]

A 900ie with ignitec and FCR carbs would be good I am sure. I have built a few 800ie motors running the FCR's with both oem Kokosan ignition and an ignitec so it can be done either way. I am waiting on speeddog to be the test pilot on a ignitec unit using the crank sensor pick ups, no reason it should not work great. I have just not tried one yet.

Injection would also be fine and lower maintainance just not as much fun in use. If going this route I would base it off a 5am ecu not the 15m.

I also would say gearboxes are subjective on my 900's I prefer the closer ratio gearbox which was only used in the 900 monster S models. It is an easy upgrade when building motors as it is the 748 gearbox and is pretty much a drop in. If you are running higher speeds or lots of extended time at higher speed the higher overdrive may be preferred. For track or tight twisty stuff I will take the lowered gear version.   

[TitanMonsterS4R]

Project beginning.....

Finding a ton of 99 M900 frames, anything I should know before pulling the trigger on one from that year?

is there a better frame model year to have?

[clubhousemotorsports]

99  is a hoop style ride height adjuster if you are running a s2r swingarm the later style frames with a superbike style rod might be an easier conversion.

[TitanMonsterS4R]

99  is a hoop style ride height adjuster if you are running a s2r swingarm the later style frames with a superbike style rod might be an easier conversion.

Thx Clubhouse

[Duck-Stew]

But, since all but the 2002 900 engines have 10mm engine mounting bolts and the later style 'ST-based' Monster frame (which readily accepts an S*R swingarm) runs the 12mm engine mounting bolts, you'll have to deal with a conversion there.

[koko64]

So pick up an 02 900 wreck and fit sss as the easiest starting point. Will it be a US reg or Aussie reg Titan? In Oz the frame is the bike and determines what you can and cant do. In Oz if you want a carbed 900 it will need a carbed 900 frame to get thru. If its a US bring over, then thats another matter.

[TitanMonsterS4R]

So pick up an 02 900 wreck and fit sss as the easiest starting point. Will it be a US reg or Aussie reg Titan? In Oz the frame is the bike and determines what you can and cant do. In Oz if you want a carbed 900 it will need a carbed 900 frame to get thru. If its a US bring over, then thats another matter.

Will be a US bring over. Cant have the locals pokieman able to stop my hustle...

[koko64]

Cool, you're a free man.

[Howie]

But, since all but the 2002 900 engines have 10mm engine mounting bolts and the later style 'ST-based' Monster frame (which readily accepts an S*R swingarm) runs the 12mm engine mounting bolts, you'll have to deal with a conversion there.

My '01 750 had 12mm. mounting bolts, not sure about '00.  99 and older were 10mm. for sure.

Ah, SpeedyMoto frame slider fitment:
Monster 900    1993-00    09-0203
Monster 600, 620, 659, 695, 696, 796, 800, 1000, 1100, S2R, S4, S4R & S4RS    2001-    09-0201

2000 and older, 10mm. 

[Duck-Stew]

Whoops.  Yes, 2001 had the 12mm also.  Sorry

[TitanMonsterS4R]

Whoops.  Yes, 2001 had the 12mm also.  Sorry

Awesome...the hunt continue

[koko64]

 

[TitanMonsterS4R]

Secured an '01 900 frame. It's black, will need some serious TLC. Just going to go with a very nice gloss black. I need to try and find an engine now. Going to read back through the thread to figure out which is best for my needs. 

[Speeddog]

That frame is 12mm engine bolts, so '01 and later for direct bolt-up.