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Keihin vel. stacks and "power now"
Posted: Fri Sep 21, 2007 6:43 pm
by Killerwhale
So, you with kehin FCR´s....
Have you ever played around with different velocity stacks?
Anyone tried the "power now" kit??
http://www.cyclebuy.com/shopping/powernow/pn_system.htm
Posted: Fri Sep 21, 2007 8:05 pm
by phuk72
Can they be run with pod filters? I'd be interested in seeing before and after dyno runs
Posted: Fri Sep 21, 2007 8:10 pm
by Killerwhale
phuk72 wrote:Can they be run with pod filters? I'd be interested in seeing before and after dyno runs
I haven´t read up on it yet, but the theory is interesting!
...mostly used in the MX world though...
Posted: Sat Sep 22, 2007 11:15 am
by Quan-Time
umm,, ok.. velocity stacks.. there's a HUGE science between all models.
id be VERY impressed if it provided 2hp on ANY bike.. let alone the TRX.
mental note... different chains provide up to 3hp on a TRX.. this means i think these power stacks or whatever they are,, are basically shit.
The aid in reducing "swirl" or "tumble" in the chamber.. by reducing tumble you DO increase HP.. but 2+ valve configs hardly ever suffer this.. thus, a 3v head ? ffs..
id be VERY interested to see the results.. my honest expectations.. 0hp, ~2-5% increased torque (i have a theory.. but i need to see the TRX one to get a final figgure..)
Posted: Sat Sep 22, 2007 3:43 pm
by Killerwhale
Quan-Time wrote:umm,, ok.. velocity stacks.. there's a HUGE science between all models.
id be VERY impressed if it provided 2hp on ANY bike.. let alone the TRX.
mental note... different chains provide up to 3hp on a TRX.. this means i think these power stacks or whatever they are,, are basically shit.
The aid in reducing "swirl" or "tumble" in the chamber.. by reducing tumble you DO increase HP.. but 2+ valve configs hardly ever suffer this.. thus, a 3v head ? ffs..
id be VERY interested to see the results.. my honest expectations.. 0hp, ~2-5% increased torque (i have a theory.. but i need to see the TRX one to get a final figgure..)
Velocity stacks are used to change powerband....not to increase any HP....or have i missed something??