 Wrong Sprocket? |
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 Nov 3 2009, 03:28 PM
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#1
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YFZ450 Racer Group: Members
Posts: 15
Joined: 18-May 08
From: kc mo
Member No.: 17768
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i recently bought a 06 450. it came with a 13 tooth sprocket in front and stock on the rear. i am having a problem with it on the top end. when you are accelerating in 3rd 4th or 5th it acts like it is rapped out. i have a buddy that rides a 05 450 with stock gears and he pulls away. do you think it could be the clutch slipping?
 help is appreciated |
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Nov 3 2009, 03:28 PM
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Nov 3 2009, 03:57 PM
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#2
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YFZ450 Racer Group: Members
Posts: 49
Joined: 26-July 09
Member No.: 21342
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the sprocket that you have on there is smaller than stock thats why your quad is slower. a stock sporcket is a 14 but i know a lot of guys go with a 15 for more speed. if you have a pipe, Fci intake, and the cam mod you can go to a 15 with out giving up to much low end.
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Nov 3 2009, 04:22 PM
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#3
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 YFZ450 Racer Group: Members
Posts: 220
Joined: 19-February 09
From: Grand Rapids, MI
Member No.: 19993
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you should be a little faster off the line then your friend.
The front sprocket is an easy way to get a faster accelerating quad but it takes off the top end. That is a common mod for many Raptor 660 and 700 owners use to hold their own in drag races. |
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Nov 4 2009, 10:14 AM
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#4
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 Federali  Group: Police Patrol
Posts: 3207
Joined: 22-August 07
From: Tucson, AZ
Member No.: 15361
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What do you mean by "rapped out"?
I'm curious because I'm also thinking that the high circuit(main) of your jetting may need to be addressed also. |
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Nov 4 2009, 10:52 AM
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#5
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 YFZ450 Racer Group: Members
Posts: 576
Joined: 9-March 05
Member No.: 4923
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maybe he means all over the rev-limiter...but I'll let him explain what he means.
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Nov 6 2009, 04:57 PM
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#6
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YFZ450 Racer Group: Members
Posts: 15
Joined: 18-May 08
From: kc mo
Member No.: 17768
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the problem with it hitting the rev limiter was the cluch going out. i found out the hard way why you don't put synthetic oil in a yfz. so now i need a clutch and a 14t sprocket!
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Nov 6 2009, 05:26 PM
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#7
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YFZ450 Racer Group: Members
Posts: 220
Joined: 19-February 09
From: Grand Rapids, MI
Member No.: 19993
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I have had no problems running a full syn. oil in my YFZ...
Are you sure it was for wet clutches? That could be the key. If you use Amsoil for a car in your YFZ it'll cause your problem. But if you use its motorcycle blend it won't do anything to the clutch other then keep it lubed up. |
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Nov 7 2009, 02:25 AM
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#8
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YFZ450 Racer Group: Members
Posts: 15
Joined: 18-May 08
From: kc mo
Member No.: 17768
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it was mobil 1 for cars.
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Nov 7 2009, 06:01 AM
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#9
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Federali Group: Police Patrol
Posts: 3207
Joined: 22-August 07
From: Tucson, AZ
Member No.: 15361
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QUOTE (jsvo5695 @ Nov 7 2009, 03:25 AM)  it was mobil 1 for cars. There'a actually a Mobile 1 for motorcycles also. Car oils aren't fomulated to to be ran in a wet clutch motor, this will cause your clutch to slip. |
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