bufalobob
Member
today i took my 835 bender srx to dynotech for fine tuning. every sled i have owned in the last 20 years has been dyno tuned. if you have a high performance sled & have not had your sled on a reputable dyno operators dyno than you are definately leaving performance on the table. my srx is a trail sled with reverse, stock compression, stock timing, bender pipes, tunnel cooling kit & a cold air kit. i left my winter jets in & did not hook up to the dynos cooling system.
the motor made 185.9 hp @ 8400 rpm & 117.7 lbs. ft. torque @ 8200 rpm. jim said if i jetted it down for the days conditions it would be over 190 hp & if i added timing & increased compression it would be around 200 hp.
we then checked the accuracy of my tach to the dynos tach & found it to be spot on, as has been every other yamaha tach i have had checked.
jim also ran a test to simulate trail riding between 6000 & 7200 rpm & i found that the primary circut was jetted too rich, even for winter conditions. jim will be posting the results on his web site @ dynotechresearch.com soon.
by the way this motor has 2000 miles on it.
bob
the motor made 185.9 hp @ 8400 rpm & 117.7 lbs. ft. torque @ 8200 rpm. jim said if i jetted it down for the days conditions it would be over 190 hp & if i added timing & increased compression it would be around 200 hp.
we then checked the accuracy of my tach to the dynos tach & found it to be spot on, as has been every other yamaha tach i have had checked.
jim also ran a test to simulate trail riding between 6000 & 7200 rpm & i found that the primary circut was jetted too rich, even for winter conditions. jim will be posting the results on his web site @ dynotechresearch.com soon.
by the way this motor has 2000 miles on it.
bob
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JeepTherapy
New member
sweet!
daman
New member
Nice numbers... 
