Is this enough carb? big bore ?'s

[Stomp77]

I picked up some vitos 68mm big bore cylinders for dirt cheap from ebay. I hogged out the transfers and cleaned up the vito's port work. I was running .80 over on ported stock jugs (68mm)and stock carbs jetted 310 on the mains with very similar port work and shee ran great. I was thinking of going with 33mm pwk carbs for my new vito's jugs instead of 35's to preserve throttle response. I see alot of guys talking about the 34pj's I do not know much about them, I also wondered what would the 28mm pwk's do? My guess is that the 35mm pwk would be mushy on the bottom end. I ride trails and street with t'5's, rad valve's, with pro style reeds, and a stock head. I am totally confused on which way to go, thanks!

[jbooker82]

PJ's are old technology. I would glady trade 1mm for the updated PWK's over 34pj's.

[BANSHEE HP]

.080 over is 66mm, are you going to use a 4mm crank? weather you are or not 33's will work work just not going to see the peak hp you would with 35-38's. but if your not drag racing then i doubt youll miss the power

[jbooker82]

I would go pwk 33's. He obvesly isnt building a drag racer by running T5's and trails.

 

Get a boss racing intake. They move the carbs up so the LH one doesnt hit on the clutch lever. I run 10 deg angled pods with my boss intake and pwk 33's 20 deg angled pods were to much.

 

 

I posted pics of my boss intake here.

http://bansheehq.com/forums/index.php?showtopic=131184

[locogato11283]

i agree on the 33mm pwk. great carb. easy tuning. will work well on that set up.

[GNR101]

go the pwk 33s

[BANSHEE HP]

I would go pwk 33's. He obvesly isnt building a drag racer by running T5's and trails.

 

Get a boss racing intake. They move the carbs up so the LH one doesnt hit on the clutch lever. I run 10 deg angled pods with my boss intake and pwk 33's 20 deg angled pods were to much.

 

 

I posted pics of my boss intake here.

http://bansheehq.com/forums/index.php?showtopic=131184

 

just bend the clutch lever down a lil and youll clear the lever

[Stomp77]

This bike is more for trails than anything, Its ported for a stock stroke, I was thinking the 33's with a boss adapter + some pods would be best but I really don't know much about Keihin carbs, thanks for clearing things up for me.

Edited June 1, 2010 by Stomp77