Bender 835 Srx Dyno Results @ Dynotech

bufalobob

bufalobob

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Joined
May 2, 2003
Messages
727
Location
colden, ny
jim will be posting the complete run on his web site http://www.dynotechresearch.com/
this is my trail sled that now has about 2500 miles on the motor. we did not use the dyno cooling system. fuel used was 93 octane mobil pump gas. 194.4 h.p. @ 8500 rpm's with .620 BSFC. & ----- it has reverse.

bob
 
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Is that their over the counter kit, or have you made improvements e.g. more porting, case porting, larger carbs? Those are some might fine numbers!
 
over the counter kit.
trail porting, pipes, vforce2, case porting, cold air kit & tunnel cooling kit. if i had jetted leaner & added timing & comp. would have been over 200 h.p.. don't need to - it's a pump gas trail sled.
btw - gets 8 mpg on our crappy wny trails & 10 mpg in canada.

bob
 
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Those are comparable numbers to what we saw on Benders SF. 191.1@8600 with 35mm carbs, 12.01 heads, minimal case work, and a 2 deg key.

Have you ever checked the water temp while trail riding? I have 3 of them running around here, only one of them has the cooling kit, I wonder what yours runs at.

Take your temp gun and check both sides of each cylinder at the rear, see what you see and PM me I'll tell ya how to fix it.
 
TO BAD JIM DID,NT TALK YOU INTO BRINGING THAT SRX TO THE KING OF THE TRAIL SHOOTOUT ON ONEIDA LAKE. 194 hp WOULD OF BEEN ENOUGH FOR THOSE CATS. 3:16 (yammie tony)
 
bufalobob said:
jim will be posting the complete run on his web site http://www.dynotechresearch.com/
this is my trail sled that now has about 2500 miles on the motor. we did not use the dyno cooling system. fuel used was 93 octane mobil pump gas. 194.4 h.p. @ 8500 rpm's with .620 BSFC. & ----- it has reverse.

bob
Click to expand...

Bob, how do you think it would go in 660ft???
 
800:

2 cycles like cold motors & hot pipes. i was part of the r&d team developing bender's tunnel cooling kit ( no thermostat ). i have thousands of test miles with this package on canadian lakes & trails. you can do a long hard pull, stop, open the hood & hold your hands on the cylinders & heads & they are pleasantly warm. anyone that modifies their motor will benefit from increasing both coolant capacity & flow. what most do is increase jet size to cool the piston - wrong. this method only decreases engine performance & eventually the piston skirt will stick to the cylinder. adding coolant flow & capcity actually allows leaner jetting thus more h.p..

yg316:

if i change the heads & add timing 200+. that would make the odds even better.

bob
 
srxmagic:

motor has 121 lb.ft. torque & extremely wide powerband. with proper clutch & suspension tuning it would be a missile on the track - it already is on the trail. not a soft spot anywhere. instant & brutal acceleration @ all throttle positions.

bob
 
I'm aware of the fact that they feel cool when you run them, I've done a half a dozen of these and they all have the same issue with the opti gasket, everything is OK above the head gasket. And when you spent all that time running them, what were the temp numbers? Thats what I was interested in.

I just thought I'd pass the info on to you if you were interested, after all the testing that was done on that product Justin didn't know about it either...............
 
800:

vipers have head gaskets - srx has o-rings. mine is a srx.
never had a heat gun on it. not necessary. heads, cylinders & heat exchangers are only mildly warm to the touch. why bother??

bob
 
Yeah these are srx's also, the oringed heads have the same issue, just in a different place, we used the head gaskets on srx's, just didn't trust that .030 of aluminum between the oring and the fire after the sleeves sink. The first two I had to correct, the sleeves has moved and the orings leaked.
 
the f1000 in the right hands can be a handfull. we had 2 @ dynotech a few weeks back. stock 162 h.p.. added d&d y-pipe, d&d single pipe, timing key, bullseyes & boondocker. 187 h.p. trail safe & 192 h.p. drag race setting. 30 h.p. for under $1000. & the motor is stock!!

bob
 
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