KOS

wow it must have been engaging at just an extremely low rpm

p5yk0t1c

Yeah it was very bad....I adjusted my clutch about 14 quarter turns down LOL. I'm putting the tach on today so I'll see where it engages now.

Thanks again KOS!

KOS

lol..yeah 14 flats is a lot, you were engaging at just a thou or 2...yeah it had to really work to get it going

Digital_fx3

Just a lil tid bit of info on ports and stuff....the more/bigger ports you have the higher and higher your power will come in due to the lower air speed entering the cylender giving the fuel too much time to become less atomized or pool on the piston..I wish I could make this more clear but I am at a loss for words at the moment. I hope you understand my thinking.

And I am happy that you have your problem solved!

KOS

yes buy increasing your port size/# you can run into those issues. a couple things can happen...depending on the suction pulling from the eport will have some effect on all of this...it can pull and pull but not have enough mix to pull...could put a lean condition into the motor. on the other hand if it is not sucking enough and you can get the loss in atomization sure...

but there are offsets to both of these, you reed tip area, size of carb can help offset the larger ports, that and jetting....

on the other hand if there isnt the same suction going on then the eport would need to be massaged to help counter that...

hope this helps kinda tired right now and hope i didnt get anything backwards
lol

Sleeves

I would think that the port size would have to match up with the cylinder size in a way , to big , your not pulling fresh vaporized fuel direct from carb , instead that would pull from the extra mixture already not used in the port , Y/N?

So hence , would bigger be better in a way ?
Cleaned up , and smoother ports , would be the route to take !

__________________
TRC , Amra , Mra , Smra
06' P1 BMS competition BZM 15.5hp Open 50cc
05' DM Telai - ZPF 18 h.p Open 50cc
08' CBR125r
96' Gsx-r 600

Digital_fx3

bigger is better aslong as you have a properly sized carb on it. Ideally if you are going to go with a large number of ports you should set up your bike to rev high because that is really what more or bigger ports do best as it will be much less restricting on the amount of air you can get from the crank to the cyl, but if your carb cant get enuff of the mixtuer into the crank the awsome race head you put on just wont perform the way it should. as for porting it is always a good practice to have a slightly ruff finish on the intake ports as this will aid in turbulance witch is good for fuel atomization (sp?) and on the exhaust ports is is best to have a nice almost mirror polish or as close to so there is the least amount of resistence for the exhaust gases to flow out and let the pipe do its thing.

things to consider Port volume....larger = slower air velocity entering the cylender...helps engine breath better @ high RPM but loss on bottom of rpm range....higher CR will work best on a big port motor..well any motor for that matter. and reeds as we all know stock reeds suck so get some black widow tripple stage reeds and rock the track.

Beer drinking hurts overall bike performance over a prolonged period of time
due to added weight. (still dont know how fatguycanwin is so fast) Some acceptions to this rule.

p5yk0t1c

I'm pretty dumb when it comes to all that technical stuff, but what do you guys think of that 6 port head? You say more ports is better, but I have heard a lot of mixed feelings about which is better the 5 port or the 6 port. Some are saying you have to have the race crank with the 6 port in order to get back the lost (low) rpms...is that true. Some are saying that there is really no difference and that the 5 port is still the better choice. Have you guys seen the 6 port, or have any of you been able to test it?

*remember please dumb it down for me when replying*...lol

Digital_fx3

IMHO I think 6 ports are over kill for the small displacement we are dealing with and a 5 port can still easyly handle all the air we can pull threw the small carbs on out bikes. That is just my .02 worth

Sleeves

Really thats why BZM makes a 6 port then hey ?

__________________
TRC , Amra , Mra , Smra
06' P1 BMS competition BZM 15.5hp Open 50cc
05' DM Telai - ZPF 18 h.p Open 50cc
08' CBR125r
96' Gsx-r 600