Well what are they what do they do and if they add power about how much.

 

I was wondering the same thing

 

The one from Sparks advances your timing six degrees.

 

it adjusts the point of fire on a motor.

 

But does it add much power 2-4 hp like they claim?Is it worth it?

 

depends, methanol likes more timing because of the increased octane in the fuel and the higher compression. Gas doesnt like much of an advance. It also determines what system you use. If you run a "brain box" (cdi) it advances and retarts your timing according to rpm. Where "set" ignitions such as a pvl are a specific timing advance (or retard) and it never fluctuates. This works fine because drag racers are always WOT and they dont need the advantages of a retarding and advancing ignition, they are only concered with a specific number that their motor responds best to.

Advancing an ignition can create a lot more power, but can also hinder performance. Talk to your builder and he will know what to set your motor up for.

 

Based on my previous experience with the Raptor timing key, you will gain around 1 screaming horse on a internally stock engine....maybe a tad more. I gained a consistent 2 lengths dragging.

 

I don't have a dyno sheet but my a$$ dyno felt NOTHING with my Sparks degree key

 

I could'nt really feel any difference either. I had a bike too drag with before and after (many runs) the timing key........2 lengths. Worth the trouble of installation? I say wait until the 1-way starter gear goes out and do the mod while you are in there...and it will go out too.

 

My builder is me and i dont know what to say [img]i/expressions/face-icon-small-smile.gif[/img] screw degree wheels though i dont want to mess with them yet, got to get new valves and port and polish 1st [img]i/expressions/face-icon-small-smile.gif[/img]