June 16th, 2017, 07:32 AM | #1 |
ninjette.org newbie
Name: Jacob
Location: Knoxville
Join Date: May 2017 Motorcycle(s): 2010 Ninja 250 Posts: 9
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Working on a previously modified bike
Here we go! I purchased a bike with mods already done. Some of the mods seems to be working well and others I've dropped in favor of stock or other parts. I'm completely new to bikes in general. Matter of fact, most what I have learned has been from this forum. I've ran into the following situations the search bar has been limited on.
1. Based on the K&N replacement filter and exhaust (and stickers) my bike is jetted. Great! Except for it's using the loudest muffler possibly built for these bikes. If I drop the full exhaust and move to stock pipe with a slipon, do I have to rejet completely since I do not know what stage is currently installed? I would assume stage 1 or 2 based on the air box still being installed but the assumption is made on limited knowledge. 2. Tires- 150 on the rear is almost new. 120 on the front is trash. Is the difference in handling justifiable enough to replace the rear tire with the front or should I order a front, wear out the rear and then replace with correct sizing? |
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June 16th, 2017, 08:45 AM | #2 | |
ninjette.org certified postwhore
Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017 Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500 Posts: A lot.
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Quote:
2. I would stick with O.E.M tire sizes. Oversize tires do you no good whatsoever and your rim width probably won't properly accommodate the extra width. A wide rear tire my increase your testosterone levels but the bike won't perform better. I like to replace tires that match but a different front tire won't put you in a ditch. Bill |
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June 16th, 2017, 10:32 AM | #3 | |
ninjette.org newbie
Name: Jacob
Location: Knoxville
Join Date: May 2017 Motorcycle(s): 2010 Ninja 250 Posts: 9
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Quote:
2. The 150 is currently on the bike, wasn't my choice. I'm not much of a "hey look how big my tire is" kind of guy, BUT I also prefer not to throw out a good tire just because it looks big either. I guess I should actually rephrase the question to "is the performance/ handling of a correctly sized rear tire worth removing the essentially new rear one?" |
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June 16th, 2017, 10:41 AM | #4 | |
ninjette.org newbie
Name: Jacob
Location: Knoxville
Join Date: May 2017 Motorcycle(s): 2010 Ninja 250 Posts: 9
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Quote:
2. I'm not much of a "hey, my tire is bigger than yours" kinda guy. Since the bike came with the 150 I guess my question should be "is the performance/ handling of a stock bike worth throwing out the fairly new 150 tire?" |
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June 16th, 2017, 10:49 AM | #5 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
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In that situation, I would wear out the rear tire and then replace it with the stock size.
As far as jetting, things like properly performed plug chops can tell you how it is after you make changes. Just looking at plugs after some amount of running really doesn't tell you much. |
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June 16th, 2017, 12:05 PM | #6 | |
ninjette.org certified postwhore
Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017 Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500 Posts: A lot.
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Quote:
Bill |
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June 16th, 2017, 12:08 PM | #7 |
ninjette.org newbie
Name: Jacob
Location: Knoxville
Join Date: May 2017 Motorcycle(s): 2010 Ninja 250 Posts: 9
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Thanks Ram and Jim. I was looking forward to getting out my ninja stars for a sweet judy-chop on the plugs, but I suppose Jim's way makes more sense...
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