modding my a 201t

[Johny Walker]

copied what jpnoone did with his ,drilled 2,6mm holes in the muffler, my god what a differance them 2, holes have made revs clean not like its half choked ,didnt need retuning ether,a vast improvement , well impressed

 

soz pics ,check them here on other thread

 

http://arbtalk.co.uk/forum/chainsaws/59663-201t-dirty-chain-brake-pics.html#post915774

[Eddy_t]

copied what jpnoone did with his ,drilled 2,6mm holes in the muffler, my god what a differance them 2, holes have made revs clean not like its half choked ,didnt need retuning ether,a vast improvement , well impressed

 

soz pics ,check them here on other thread

 

http://arbtalk.co.uk/forum/chainsaws/59663-201t-dirty-chain-brake-pics.html#post915774

 

Keep your eye on the plug colour if its not been retuned, might be running a little lean on high

 

 

Sent using Arbtalk Mobile App

[Gerbutt]

Do you think doing this to a 200t would make a difference too?

[Pete Mctree]

You will get some good gains doing this to a 200t.

 

You must richen up the High jet though, as you will run the saw lean otherwise. Just keep an eye on the plug colour

[Gerbutt]

Which screw is that and how much more do you think? Would the holes be in the same place?

[Big Beech]

Which screw is that and how much more do you think? Would the holes be in the same place?

 

The "H" screw anticlockwise

[Le Sanglier]

Well done Johnny, I will have a crack at that tomorrow.

[Johny Walker]

Well done Johnny, I will have a crack at that tomorrow.

 

will check plug on monday as its done a tank full now , arnt the high speed screws pre set ,??

[Le Sanglier]

will check plug on monday as its done a tank full now , arnt the high speed screws pre set ,??

 

No eye deer I'm afraid.

[Rich2484]

You will get some good gains doing this to a 200t.

 

You must richen up the High jet though, as you will run the saw lean otherwise. Just keep an eye on the plug colour

 

Urm.

 

SPUD. Just when we think we are getting somewhere this happens :001_rolleyes:

 

Ok. Here goes. By drilling holes in the exhaust you are ONLY letting the exhaust gasses escape quicker. Thos with a turbo car know what happens with it.

 

The burnt gasses are only getting out quicker making the exhaust clear quicker allowing the transfer of gasses out of the engine better, this will stop "bogging" of the engine, this "bogging down" is the exhaust not getting out fast enough and filling the exhaust casing up, therefore the engine must push the burnt gas out harder, meaning there is a blockage of exhaust.

 

Bit like reducing the m25 to single lane traffic in the middle of rush hour.

 

 

The intake is not effected so the same amount of air and fuel will still be going in and getting burnt. Unless you do some porting work to the intake.

 

If anything they have to be leaned up a bit due to the ventury effect on the carb and meaning it will pull more fuel up as the gasses move through the engine faster.

 

Jeeze where is spud when you need him