Anyone using modded saws?

[Charlieh]

Just wondering if anyone in the UK has played about with their saws?

 

im considering opening up the exhuast a bit on my 372 as well as uping the sprocket size, to an 8 or 9 tooth.

 

my 084 has a moddified muffler (on it when i bought it) its bloody loud and hasnt been done quite how i would do it, but its a beast of a saw, this is running a 8tooth .404 sprocket and i am after a 9 although im concearned that at this speed it wont clear the cut quick enough (the 084 i keep limited to 11,000rpm as i use it for milling also)

 

so anyone else played about? and what have you done? (please add pics if applicable)

not that im bored this afternoon or anything

[Pete Mctree]

Both 200t's both 260's, 440 and 460 all have had the exhausts opened up, i'm waiting to get the 660 done. Amazing difference imho.

 

You have to richen the carbs up though as they will run very lean

[High Scale]

Two 020ts with opened up exhausts, high adjustment is opened out all the way, 12 inch bar on one, it really rips IMO, everybody else just thinks it's noisy.

[treemotion]

Im just using norm so whats this opening the exhaust up the does it lessen engine life substaintially.

[High Scale]

http://www.chainsawperformance.com/

 

 

http://www.chainsawperformance.com/showthread.php?t=1658

[Charlieh]

Im just using norm so whats this opening the exhaust up the does it lessen engine life substaintially.

 

apparently not as the saw should be able to run cooler (unless you dont alter your carb settings after modifying the exhuast)

[Pete Mctree]

http://www.chainsawperformance.com/showthread.php?t=1658

 

With regards to Carls link follow EHP's percentages, he's the main man with regards to modding saws

[Charlieh]

at least we dont have to put up with the exhausts they get on the US saws! ours are more open to start with,

 

having read that link its a bit different to other stuff i have read which recommends no more than 80% of the port area, unless your doing other funky stuff like altering the exhaust and intake ports

[Pete Mctree]

80% is what I aim for with mine. Seems to work well

[treemotion]

:wave:Ok guys site did not answer much. So do you bore the exhaust port on the head or the exhaust or buy modded exhaust

 

Then just increase fuel ratio.

 

?????> im interested

 

pete i would like to know how you mod the 200t is you dont mind.