I'm an experienced drag racer and motorcycle collector, but I am absolutely new to V-motors.
I'm looking for a carb tip from some forum pro which I will appreciate greatly...
but first a little more background.
I decided I just HAD to have this beautiful red 2005 like MINT with 4000 mi.
Paid Xtra for the mint part.
Bike ran fine for me until I heard another guys well tuned bike with a Kerker competition baffle and pods. (by ran fine, I mean i rode it a couple times. I have many bikes, and they all have to take turns with me, except during the brief honeymoon period).
So any ways the other guys bike sounded FANTASTIC. It took me right back to my days on the strip. I could even smell racing fuel and burning rubber in my mind!
I almost bought that bike, though slightly rough around the cosmetic edges, Just for the tune!
Instead, I bought a competition baffle for my full, silver coated, kerker 4-1, and the Innovate LM-2 system for logging AFR. I wanna use it on my other bikes anyway- but right now, I gotta have that SOUND!
Long story short, and damn I'm retarded, but a few trips while logging rpm, g's, afr, and pipe temps showed me that cylinder 1 coil was UNPLUGGED. First thought in my mind was the guy unplugged it to sell a bad cylinder... but nope. compressions all good.
not all cylinders responded well to idle mixture screw changes so a rebuild was indicated.
besides afr was off the chart lean at idle and I had a "hanging" idle after throttle blip.
cruise afr was high also 16-18 but WOT dropped to 9!
So I rebuilt carbs. mains from 170 (assumed Dynojet) to 165MSD.
Needles I actually dropped a half notch on intuition. they look like dynojet needles with the clips now on the second notch down from the fat end.
The idle air jets are 90 (Dynojet?) on top and 150 (Dynojet?) on the side.
The idle fuel jets are now 40, were 37.5.
my mixture screws are now 2.5 turns, same as before.
The springs appear dynojet.
The slides are drilled.
The only thing I noted on the rebuild was some little pieces of looked like broken rubber out of one of the idle mixture circuits.
The carbs are reinstalled, synched and the coils all connected.
Before you laugh at me driving around a 3 cylinder v-max, remember- I never rode one before and to be honest, it's not a huge difference! disconnect a coil and try it!
Now as laughter subsides... here are my new numbers and my request for guidance.
Idle is now ON the charts at 17-18 ish, and may not be a reliable number as i am using the Innovate tailpipe probe versus a weld in bung. BUT the throttle response is way improved and snappy with no hang or droop when blipping.
cruising afr is right in line seeing numbers from 13 to 15 and cruises with alacrity.
WOT however, while strong, is very rich at 10.5 afr, and the inside of my competition baffle is beginning to show it.
So my question to you experienced vmax tuners is this. What jets do you suggest i pop in for the mains? I would like to move all the way from 10.5 to 12.5 or 13 for WOT with the minimum number of carb pulls. Did I tell you this bike is MINT? I can hardly bear to touch screwdriver to screw without having a new screw on hand.
So from present 165 MSD which I think might be comparable to dynojet and probable similar to 155 Mikuni. I don't think going one size down to the stock 152.5 mikuni will take me as lean as I want to go. But if I do maths and assume a linear relationship, I get numbers in the 130's and that sounds nuts. So I think I might try a dynojet 150, or do you guys think that's too lean?
I live in Phoenix, about 1000ft.
comp baffle in.
stock air box with k&n
I'm looking for a carb tip from some forum pro which I will appreciate greatly...
but first a little more background.
I decided I just HAD to have this beautiful red 2005 like MINT with 4000 mi.
Paid Xtra for the mint part.
Bike ran fine for me until I heard another guys well tuned bike with a Kerker competition baffle and pods. (by ran fine, I mean i rode it a couple times. I have many bikes, and they all have to take turns with me, except during the brief honeymoon period).
So any ways the other guys bike sounded FANTASTIC. It took me right back to my days on the strip. I could even smell racing fuel and burning rubber in my mind!
I almost bought that bike, though slightly rough around the cosmetic edges, Just for the tune!
Instead, I bought a competition baffle for my full, silver coated, kerker 4-1, and the Innovate LM-2 system for logging AFR. I wanna use it on my other bikes anyway- but right now, I gotta have that SOUND!
Long story short, and damn I'm retarded, but a few trips while logging rpm, g's, afr, and pipe temps showed me that cylinder 1 coil was UNPLUGGED. First thought in my mind was the guy unplugged it to sell a bad cylinder... but nope. compressions all good.
not all cylinders responded well to idle mixture screw changes so a rebuild was indicated.
besides afr was off the chart lean at idle and I had a "hanging" idle after throttle blip.
cruise afr was high also 16-18 but WOT dropped to 9!
So I rebuilt carbs. mains from 170 (assumed Dynojet) to 165MSD.
Needles I actually dropped a half notch on intuition. they look like dynojet needles with the clips now on the second notch down from the fat end.
The idle air jets are 90 (Dynojet?) on top and 150 (Dynojet?) on the side.
The idle fuel jets are now 40, were 37.5.
my mixture screws are now 2.5 turns, same as before.
The springs appear dynojet.
The slides are drilled.
The only thing I noted on the rebuild was some little pieces of looked like broken rubber out of one of the idle mixture circuits.
The carbs are reinstalled, synched and the coils all connected.
Before you laugh at me driving around a 3 cylinder v-max, remember- I never rode one before and to be honest, it's not a huge difference! disconnect a coil and try it!
Now as laughter subsides... here are my new numbers and my request for guidance.
Idle is now ON the charts at 17-18 ish, and may not be a reliable number as i am using the Innovate tailpipe probe versus a weld in bung. BUT the throttle response is way improved and snappy with no hang or droop when blipping.
cruising afr is right in line seeing numbers from 13 to 15 and cruises with alacrity.
WOT however, while strong, is very rich at 10.5 afr, and the inside of my competition baffle is beginning to show it.
So my question to you experienced vmax tuners is this. What jets do you suggest i pop in for the mains? I would like to move all the way from 10.5 to 12.5 or 13 for WOT with the minimum number of carb pulls. Did I tell you this bike is MINT? I can hardly bear to touch screwdriver to screw without having a new screw on hand.
So from present 165 MSD which I think might be comparable to dynojet and probable similar to 155 Mikuni. I don't think going one size down to the stock 152.5 mikuni will take me as lean as I want to go. But if I do maths and assume a linear relationship, I get numbers in the 130's and that sounds nuts. So I think I might try a dynojet 150, or do you guys think that's too lean?
I live in Phoenix, about 1000ft.
comp baffle in.
stock air box with k&n