brianbailey440
Member
ive decided to post in this section some questions about helix changes.hoping to get some real good advice from the experts on here.here goes,i have a 2000 sxr 700 that ive been trying to dial in.im running 89l weights with no rivets.ywy spring with 2 engagement shims,reed spacers, bender tripples,23-40 gearing,1 inch predator track with 96 studs.currently running a 51/43 helix with the stock spring.stock engine, and air box. i have 3 other helixs i could try,they are msr8 52-40,bender 45-41,and a bender 49-37.i want the sled to rip out of the hole, and be fully shifted out by 1000 ft.which one of the helixs will work best for what im trying to do?am i correct that if i use the 49-37, it will pull harder to 1000 ft?slow the shift down, keeping the motor in its power curve?or is that a helix i should save for when i gear up to 23-38?right now with the 51-43 helix i only see 8500 rpm after a long run, about 2000 ft.it takes a while before it will hit peak rpm.i know it has more in it for a 1000 ft drag race,i think it may be shifting out too soon, and actually getting ahead of the motors power curve. i wanna rip out of the hole, and be at 8500 rpm sooner.want to be quiker in 1000 ft with the gearing that im running now.thanks in advance
try putting 2.4 gram rivets in both holes on flyweights, stock spring and 150 main jets. That helix you have now is the one you want! also 14.5 mm rollers
brianbailey440
Member
89l s only have one hole