Snopczynski Posted October 29, 2007 Report Posted October 29, 2007 They do, the 4 mill stock cylinder and the 460cc 6mm cheetah motor guys I ride with run em. We just had the 6mm 460cc motor on the crank dyno. Dyno Dave said the reed spacers made a decent sized increase in midrange. All in all that bike got re-sleeved before the dyno and ported for torque. It put out 92hp with pro circuits, and 87 hp with the ptr midrange pipes. Not bad for a bike with a 2 into 1 intake and a 38mm lectron on it. Quote
dajogejr Posted October 29, 2007 Report Posted October 29, 2007 what are the direct results, Dyno speaking, of putting reed spacers on bigger motors? Pretty much everyone I ride with has 4 mil or bigger cub, twister...or Cheetahs. And they ALL pretty much hit the dyno regularly. I see no one running them..however... In fact, a friend of mine got rid of the billet crossover built in intakes and got some run of the mil UPP intakes with no crossover for his 10 mil super cub, and it ran better times and numbers with shorter intakes (the built in crossover intakes are thicker, I have 'em too). He is also one to hit the dyno and the tracks regularly... I'm not saying you're wrong, I'm just saying all the guys I ride/race with over here don't use 'em...and they all have bigger motors. Quote
Snopczynski Posted October 29, 2007 Report Posted October 29, 2007 (edited) Dave said on a motor with a bigger air/fuel charge it will create more velocity and help emulsify the charge before it enters the cylinder. It does take away from the top end hp a little, maybe thats why none of your drag buddies are using them. It sounded like you had to sacrifice top end for midrange from the results Dave had on the dyno. Most of the stuff we build is torque and midrange power based, so This stuff applies more to play riding and mx racing. Those dyno charts I posted already proved you can get a midrange gain from the spacers. On a stock bore and stroke motor, its not enough gain to warrant using them for the hit you take on the top end though. Edited October 29, 2007 by Snopczynski Quote
dajogejr Posted October 29, 2007 Report Posted October 29, 2007 Completely understand...and that makes sense Snop. I often have to take a step back from drag racing to look at the overall picture...as you said, midrange is worthless to someone that holds it WOT for a few seconds... :thumbsup: Quote
Snopczynski Posted October 29, 2007 Report Posted October 29, 2007 Completely understand...and that makes sense Snop. I often have to take a step back from drag racing to look at the overall picture...as you said, midrange is worthless to someone that holds it WOT for a few seconds... :thumbsup: Yeah, I know a couple guys with ported 350 light switch bikes that put on reed spacers. I just shake my head at them. Morons! :biggrin: Quote
dajogejr Posted October 29, 2007 Report Posted October 29, 2007 Well..you gotta compliment the boost bottle somehow... Bling Bling..... :biggrin: Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.