Cans Vs Mileage?
06-26-2004, 04:06 AM
#2
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Most of the time you don't need to re-jet the bike, but if you do, with most aftermarket cans you only need to go up one jet size, so the diff is ot great.
I think the VTR is jetted slightly rich stock, (check out your stock pipes, are the ends black? How about the sparkplugs?) if this is true, and you go to aftermarket exhuast you could actually see an increase in gas mileage.
my two yens worth.
Cheers!
I think the VTR is jetted slightly rich stock, (check out your stock pipes, are the ends black? How about the sparkplugs?) if this is true, and you go to aftermarket exhuast you could actually see an increase in gas mileage.
my two yens worth.
Cheers!
06-26-2004, 08:36 AM
#3
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The only reason I can see Mileage going down is because you will find youself using the right wrist a bit more to hear the beautiful symphony of a V-Twin at full tilt 
Love my Jardines, wouldn't give them up for anything...Like 'em better than my friend's VTR with Erions.
Love my Jardines, wouldn't give them up for anything...Like 'em better than my friend's VTR with Erions.
07-12-2004, 11:10 AM
#8
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Re: Cans Vs Mileage?
First of all..... the milage on a superhawk is pathetic, but at least there's very little you can do to make it worse! As has already been said, if your mileage changes that much its more likely from your wrist than any mechanical changes. You'll be blipping the throttle every chance you get. 
On Jetting: I had spent WAY too much time back in 2000-2001 researching whether or not the Jardine high mounts would cause me to re-jet. The overall answer was NO!!! I received the cans 20 mins before leaving for Mid-Ohio for superbike weekend. We put them on as soon as morally possible after getting up there. (I don't think camp was even fully set up yet) I rode all that weekend and then a very small bit the rest of that year. Then something went wrong. Bike wouldn't start, couldn't get it off idle, sounded lean has hell everywhere on the rev range (if you could even get it to rev). We wrote it off to bad gas and sitting for almost a year untouched... cleaned the carbs... about 5 times. You could eat off them. Had fouled plugs. (fouled plugs when it's running lean?!) That was last year.
Fast forward to this year. The entire time I had a factory jet kit for the bike sitting in the house. I had refused to mess with it because the bike was "running fine before" and I didn't want to add another variable. I gave in and installed the needles (4th position) and the bike fired and tried to run. I took it all back apart and installed the air jets. Bike runs and starts better than it ever had.
Moral to this long-*** diatribe? You may or may not have to jet the bike. Why its different I'm not smart enough to comprehend, but it seems some people don't and some people do.
Finally on the passenger pegs. As far as I know all low-mount pipes keep the pegs. SOME high mount pipes allow you to keep them as well. The Jardines come with hardware to let you remount the pegs. In doing so you end up moving the passengers feet about a foot wider apart, and it seems to me that it would be really easy for them to lay their feet on your pretty pipes as well. I never mounted mine so I can't say for sure.
On Jetting: I had spent WAY too much time back in 2000-2001 researching whether or not the Jardine high mounts would cause me to re-jet. The overall answer was NO!!! I received the cans 20 mins before leaving for Mid-Ohio for superbike weekend. We put them on as soon as morally possible after getting up there. (I don't think camp was even fully set up yet) I rode all that weekend and then a very small bit the rest of that year. Then something went wrong. Bike wouldn't start, couldn't get it off idle, sounded lean has hell everywhere on the rev range (if you could even get it to rev). We wrote it off to bad gas and sitting for almost a year untouched... cleaned the carbs... about 5 times. You could eat off them. Had fouled plugs. (fouled plugs when it's running lean?!) That was last year.
Fast forward to this year. The entire time I had a factory jet kit for the bike sitting in the house. I had refused to mess with it because the bike was "running fine before" and I didn't want to add another variable. I gave in and installed the needles (4th position) and the bike fired and tried to run. I took it all back apart and installed the air jets. Bike runs and starts better than it ever had.
Moral to this long-*** diatribe? You may or may not have to jet the bike. Why its different I'm not smart enough to comprehend, but it seems some people don't and some people do.
Finally on the passenger pegs. As far as I know all low-mount pipes keep the pegs. SOME high mount pipes allow you to keep them as well. The Jardines come with hardware to let you remount the pegs. In doing so you end up moving the passengers feet about a foot wider apart, and it seems to me that it would be really easy for them to lay their feet on your pretty pipes as well. I never mounted mine so I can't say for sure.
07-12-2004, 11:26 AM
#9
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Squid
Join Date: Jun 2004
Location: Arlington, Texas, USA
Posts: 31
Re: Cans Vs Mileage?
Greg Nemish's website has some sound clips of the baffelectomy and Staintune pipes. Greg's Honda V-Twin Sportbikes Online site
http://webpages.charter.net/gnemish/index.html
Click the VTR1000F word in the red banner, then the Performance and Mods and Exhaust Bafflectomy.
http://webpages.charter.net/gnemish/index.html
Click the VTR1000F word in the red banner, then the Performance and Mods and Exhaust Bafflectomy.
I kinda liked the partial (8 hole) but he didn't rev the full baffle enough to really hear it.
08-02-2004, 11:44 PM
#11
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Re: Cans Vs Mileage?
Just do what makes ya happy.
12-17-2004, 03:05 AM
#12
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Re: Cans Vs Mileage?
I believe the carbs get too much signal from the motor . My 2003 had crackin throttle response which is a good thing but the combo of short camshaft overlap and one 48mm carb feeding the near 500cc cylinder hurts them most .
Thats 24mm of carb for 250cc . Some old Honda 90's kitted to 104cc run that large a carb .
I think some recent motor work I've done will make for a more efficient engine at cruise speed . Time will tell but thats usually the norm when making positive Brake Mean Efficiency upgrades .
Just to further the info an old VW 1600cc Beetle only got 24-26 mpg real world with a single small carb . Simple cam change and dual carbs made for 36mpg at cruise speed with exhaust of course .
A 1979 Honda CBX I had only got 19-22 mpg when driven with a heavy throttle hand and near same for 1978 Zuki GS1000 with the dumb little Subaru type cams . Pipe , Andrews drop in G3 cams and 29mm smooth bores made for a marked increase in power and efficiency .
Thats 24mm of carb for 250cc . Some old Honda 90's kitted to 104cc run that large a carb .
I think some recent motor work I've done will make for a more efficient engine at cruise speed . Time will tell but thats usually the norm when making positive Brake Mean Efficiency upgrades .
Just to further the info an old VW 1600cc Beetle only got 24-26 mpg real world with a single small carb . Simple cam change and dual carbs made for 36mpg at cruise speed with exhaust of course .
A 1979 Honda CBX I had only got 19-22 mpg when driven with a heavy throttle hand and near same for 1978 Zuki GS1000 with the dumb little Subaru type cams . Pipe , Andrews drop in G3 cams and 29mm smooth bores made for a marked increase in power and efficiency .
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