Got rid of my electric starter motor but a doubt arised help
 

Last sunday I took my bike again to the local MX track. I found there a couple of jumps right for me and I've been jumping there. I have tried to get rid of most of the unnecesary weight (factory headlight, grille, rear footpegs, speedo, etc. etc. etc.) and yesterday I took off the electric starter motor, the starter sprocket and the battery. These items were quite heavy!!

I tapped the hole left behind (on the left cover of the motor, its opening facing to the right) with a very nice rubber plug I found at a car warehouse. My question is how tight/strong this plug should be, because I noticed the electric start motor has a nice sealing o'ring and I don't know if this side of the engine gets pressure from the oil or if it's just as pressure-less as the part of the motor where the breather hose is.

This info will be greatly appreciated folks.

Could you possibly remove the guts from the starter and re-mount the housing to seal things back up? The case itself is probally not that heavy.

I am thinking that you need to make a blocking plate and use the o-ring to make the seal.

A piece of light sheetmetal or thin aluminum.

Allen

I dont think you'll have any pressure issues from it as there is a crankcase breather already but you will want to make sure no dirt gets into your engine.

A nice tight fiting rubber plug should be fine but just make sure it cant fall out leaving your engine open to debri.

Hmm.....maybe someone should make an electric starter elimination kit for these bikes.

Thanks a lot guys :D . The answer was in front of my nose. I took off the rubber plug again and did a simple test: blow some air thorugh the breather hose and see if I could feel the air through the electric starter "hole". Actually the two are connected so as you say there's no pressure there...

I fitted the plug again, wich fits nice and tight (along with some gasket maker) and it's ready to go. I wanted to go to the woods but the rain is pouring again, maybe tomorrow :cry:

I would consider using something to hold the plug in place also. Like a few zipties or a large hoseclamp.

Maybe a metal strap the uses the two starter bolt holes.

Bouncing off-road may cause the plug to come out.

Allen

I used a nice big pipe cap, ground the threads off and afixed it with some gasket gunk. stayed in place and works well. and I ride in some ROUGH stuff. hehe