2005 scrambler 500 ho 4x4

All stock Even tire size, but a small clutch spring change.
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Q, IS THE aftermarket cdi box worth 90 BUCKS ?

it says up to 4 hp increase but who knows.

 

who makes the one you are looking at?

 

idk i saw those 2 don't know what they do i got a cdi box for my 250cc 2 stroke dirt bike powerd race car and it is the difference of driving or pulling the front weeles on a 650 pound car off the ground

 

http://cgi.ebay.com/ebaymotors...temZ110222386188QQrdZ1

 

that link is for a 90cc?

 

Do not, I repeat DO NOT get an aftermarket CDI box for a 500 engine, unless it specificly states that it WILL NOT increase RPMS. However, most aftermarket CDIs do increase top RPMS by usually 1,000-2,000.

You WILL grenade this engine if you spin it past 7,000 RPMS. They are not meant to spin beyond that.

 

i know the sportsmans have less rpm than the scramblers and my scrambler 500 has a sportsman engine in it with teh sportsman cdi isn't it the same engine? i know from the factory they have the sportsmans with less rpm. it sayss that in my shop manuel. would i be able to put a scrambler cdi on it to get more rpm but no more than the scramblers. maby they don't whant the sportsmans to go as fast off for the clutch and geering.

 

The Sportsmans are most likely clutched for lower RPMS, not anything to do with electrics. The stock primary springs don't have enough full shift tension to support over 5,500 RPMS. I know this because I have a tach on my Scrambler & have played with MANY primary springs 'till I found the one I liked. The stock blue/green stripe primary engages at 1,200 RPMS & full shifts to 5,300-5,500

The HO Sportsmans are the same engine as the Scrambler, but if they aren't the HO, they have a different cam & compression.

 

o ok well i feel my engine is reely powerfull can't keep the stock tires on the ground at all wothout spinning i had to go with 24 inch instead of teh 22

 

i just looked on the parts diagram and they use both the same CDI for the scrambler and for the sportsman. If they are both the HO style.