Porting The MS201T

[angelo c]

Are we talking about 201TC or 201t. The electronic saws and the solenoid issues changes the game on "repair" .

 

[Trial-n-error]

So......I setup the jug in the lathe and cut .006" from the squish band, and made the clearance .016" without a base gasket. That will bump the compression about 25psi.

You know your degrees of your intake and exhaust? I need some guidance. Right now with base gasket mine is 150 in. 146 exhaust.

 

[Joshcnly]

I can't tell that the new ones are much better than the old ones Doug.

I think they may be tuned a little better from the factory now though. Proper tune makes a huge difference in this unit.

Can you tell me what sealant to use on the tranfers covers it looks like you opened them up

 

[pioneerguy600]

Can you tell me what sealant to use on the tranfers covers it looks like you opened them up

You will not get a response from the member you asked the question of.

 

[Joshcnly]

You will not get a response from the member you asked the question of.

Darn okay thanks for the heads up

 

[ZeroJunk]

Stihl uses Dirko. Stihl dealer that does repair should have some.

You can use Hondabond or Yamabond . Whoever services those ATV's should have some.

 

[lone wolf]

Darn okay thanks for the heads up

Which 201 T you working on regular carb or Mtronic?
If it's the regular carb model just advance the timing 8 degrees and open up the exhaust then tune the carb and this should satisfy your needs for more power. PS you prob have to drill out the H limiter or however you can to get access to the H jet.

 

[lone wolf]

 

[Joshcnly]

View attachment 1226473

I've that's the first thing I do and you guys are awesome sharing the knowledge im basically in the transfer now due too my reductions on the base I'm trying to get compressions in the 185psi and 195 range and smooth power band I also run only premixed container fuel so they smell and burn great

 

[Joshcnly]

Which 201 T you working on regular carb or Mtronic?
If it's the regular carb model just advance the timing 8 degrees and open up the exhaust then tune the carb and this should satisfy your needs for more power. PS you prob have to drill out the H limiter or however you can to get access to the H jet.

Carb style i do mtronics as well they don't seem to be very happy past the 3 degree range

 

[Joshcnly]

Stihl uses Dirko. Stihl dealer that does repair should have some.

You can use Hondabond or Yamabond . Whoever services those ATV's should have some.

I use 518 for my base gaskets so your saying they use dirko to seal the outside transfers up?

 

[ZeroJunk]

I use 518 for my base gaskets so your saying they use dirko to seal the outside transfers up?

I thought you were asking about base gasket.
No. Dirko won't glue on side covers.

 

[Joshcnly]

I thought you were asking about base gasket.
No. Dirko won't glue on side covers.

I didn't think so... I was fixing to say how they have to use an epoxy on the side only thing high temp would be jb weld high temp high vibration epoxy...