jc2 Posted December 4, 2010 Report Share Posted December 4, 2010 (edited) I recently scored a 75 247 Cota. Any tips for set-up & improvements? Edited December 4, 2010 by JC2 Quote Link to comment Share on other sites More sharing options...
keychange Posted December 4, 2010 Report Share Posted December 4, 2010 My standard tip - get a compression release valve and save your kick start gear. Quote Link to comment Share on other sites More sharing options...
sdm Posted December 10, 2010 Report Share Posted December 10, 2010 Mine is geard down from stock with a 10 cs sprocket and a 56 rear. For me stock is too tall for competition. Just personal preferance but I installed a Domino slow throttle on my bike. I also put new Amal levers which work much better than what came on the bike. The only other thing I did was put a FMF universal spark arrestor on the exhaust for the spark arrestor feature. Gets pretty dry around here.... I am still running the stock shocks. Sam Quote Link to comment Share on other sites More sharing options...
charliechitlins Posted December 11, 2010 Report Share Posted December 11, 2010 If anybody has a suggestion for getting a little more grunt off the bottom....'m sure missing that smooth power delivery my Sherco had. I know it's a mistake to compare the two, but... Maybe a smaller throat carb. Quote Link to comment Share on other sites More sharing options...
sdm Posted December 14, 2010 Report Share Posted December 14, 2010 Before you change the carb make sure the exhaust is not plugged. They can get plugged with carbon over time and it can mess up the power. My 72 was almost completely closed off but still flowing and it made a huge differance when I cleaned out the muffler and mid pipe. It probably still won't be like your Sherco but may run cleaner. Also it may be time for a top end if it seems that weak. Both my 247s are good and strong off the bottom. Sam Quote Link to comment Share on other sites More sharing options...
jc2 Posted December 14, 2010 Author Report Share Posted December 14, 2010 Sam, how did you clean out the mid-section? Quote Link to comment Share on other sites More sharing options...
keychange Posted December 14, 2010 Report Share Posted December 14, 2010 Yes it's difficult to measure when I have never ridden a Sherco. My 247 has always had the opposite problem ie: plenty of power down low but quite dead at the top. It pulls steep hills in 3rd gear that my TLR200 needs to use 1st gear for. I have given up worrying about the top end on my Cota. Check your timing you may be too advanced - is it difficult to start? My 247 starts first kick from cold but if I advance say 2 degrees it won't start without a weeks preparation. Quote Link to comment Share on other sites More sharing options...
sdm Posted December 16, 2010 Report Share Posted December 16, 2010 Sam, how did you clean out the mid-section? I basically used an old chain saw chain and ran it back and forth to break loose all the carbon for the mid pipe. I used a OXY ACC torch to heat the insides of the after muffler/ spark arrestor until the carbon was hot enough to flake off with a screwdriver. There was alot of carbon build up in both. I didn't have the guts to take a torch to the mid pipe because I was afraid if I ruined it I wouldn't be able to find another. The torch method works well but makes alot of smoke... I did all this on my 72 which has a smaller stinger/exit pipe than the 74 has. I can't believe how much better the bike runs... Sam Quote Link to comment Share on other sites More sharing options...
keychange Posted January 8, 2011 Report Share Posted January 8, 2011 As posted elsewhere I just fitted wider foot pegs - luxury! Should have done it ages ago. Quote Link to comment Share on other sites More sharing options...
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