Blower belt problems

4

4bangrboost

Free Member

Dec 1, 2007

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livingston MT

• Dec 3, 2007

• #1

I got a apex with a stage one mpi charger one it..ever since we got it i have been having problems keeping the belt from waring out. MAIN problem is the charger is mounted to the chassie and the moter is rubber mounted..that cauzes binding and messes with the blet tension..SECOND problem is the belt is to long and i think it slaps when the motor get to moving and the belt gets to floping. at least this is what im guesssing..i have talked to MPI and they cant get me a shorter belt so i talked to all the local parts houses and cant find nothing...i avridge about a blet for every 3 or 4 rides...any one else have this problem?

ps. i have tigtened the belt to mpi specks and it still does this..and the tighter you get it the closer it gets to smaking its slef...its gettin a little old haha

 

K

KC Boost

Free Member

Dec 2, 2007

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52

Drumheller, Alberta

• Dec 3, 2007

• #2

Is it a rib belt or cog belt? On my Nytro they have a cog belt made of a new material, has a blue layer of stuff on the inside of it.???

 

4

4bangrboost

Free Member

Dec 1, 2007

391

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livingston MT

• Dec 4, 2007

• #3

its a cog but it dont have that blue layer its just the avridege belt its not made special or anything..you can by one just like it at car quest

 

O

obile

Active member

Jan 17, 2003

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59

walla walla wa

• Dec 4, 2007

• #4

i had the same problem first time out on mine. talked to some others and was told to run the belt tighter. i tightened it down to where you cant hardly push it closer with your finger and havent had to touch it in 500 miles.this thing has to be tighter than cheott!

 

WakeGD

Member

Lifetime Membership

Nov 26, 2007

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8

Meridian, ID

• Dec 4, 2007

• #5

Ditto, crank up the tightness on the belt! It needs to be much tighter than you'd think would be necessary.
If it is getting worse when you attempt to tighten you might have another issue.

 

C

colorado yamaha

Member

Dec 5, 2001

128

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18

Colorado Springs, CO

• Dec 4, 2007

• #6

You should only see about 1/4" of thread on the adjuster bolt. It will seem entirely too tight but that's what works, 3 years ago I fragged a belt and since then, no problems.

In the pic, you can't see the bolt, but the belt distance.

 

Last edited: Dec 4, 2007

K

KC Boost

Free Member

Dec 2, 2007

177

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52

Drumheller, Alberta

• Dec 4, 2007

• #7

MPI just started using the new belt. My mech at the shop swears that it is the only belt to use. He has been building boost sport bikes for years.

 

4

4bangrboost

Free Member

Dec 1, 2007

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livingston MT

• Dec 4, 2007

• #8

sweet guys thanks for the help.. ill titen ur up more..its pretty tight now but i got nothing to lose....i just put my boost gage on and im gona see what is boostn and ill see about gettin a bigger pully on the bottom that will keep here even farther apart

 

4

4bangrboost

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Dec 1, 2007

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livingston MT

• Dec 4, 2007

• #9

are those new belts and my belt the same lenght or can you get them the same lenght or what?

 

B

BlgsRX-1mtn

Free Member

Dec 22, 2002

127

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18

Billings, MT

• Dec 5, 2007

• #10

I don't run the blower belt past the MPI specs and I have never blown that belt on my RX-1. Are you sure that the pullies are pefectly alligned? Mine actually shredded the one right next to the battery. Just so you guys know; that one is adjustable also (found this out when I called to ask MPI how to get the new belt on there). You need to loosen up all the allen bolts holding the SC in the billet bracket and it will rotate to allow tension adjustment. If you have any miles on the unit and weren't aware of this adjustment; you might want to pull the intercooler and check it.

BTW mine blew with 1300 miles on the kit. My belt that's visible is still perfect but I now keep a spare of each in my windshield bag.

Jim

 

Last edited: Dec 5, 2007

4

4bangrboost

Free Member

Dec 1, 2007

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31

livingston MT

• Dec 5, 2007

• #11

i got my boost gauge on and it didnt impress me..so im gettin a bigger pully for the bottom..that will cure my boost problem and my belt slaping problem...hopfully..but ill check the pullys and see if there alighned

 

4

4bangrboost

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Dec 1, 2007

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livingston MT

• Dec 6, 2007

• #12

they wont sell me a bigger pully! haha i gota get a serial number off the charger they said.

 

K

KC Boost

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Dec 2, 2007

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52

Drumheller, Alberta

• Dec 6, 2007

• #13

The belt comes in different lenghs, I have spare pulleys if becomes a problem.

 

4

4bangrboost

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Dec 1, 2007

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livingston MT

• Dec 8, 2007

• #14

thats a good deal. are they the same widths? if so i wonder if u could buy one that would fit my apex. i just put my sled back together and a tighted the pizz outa that belt..i carry a spar one so its all good...going riding tomorrow so ill see..haha cant wait!