Fitting a different tacho?

[ssray]

Is it just a case of giving it power and a pulse? it would be a gsxr ish, fitting to a 4cyl bike?

Ta

Ray

[cagimaha]

Depends which model GSXR, the early oil boilers fire two plugs simultaneously and have two coils, newer ones have a seperate coil pack for each pot. I have heard of people using a speedo healer to adjust them into spec though I have no experience of doin this myself. You should be alright using anything that runs a similar ignition setup. ZXR > GSXR will be fine etc.. Hope this helps, Ben

[ssray]

So...what if it was an old bmw k100? if you felt the weight of the clocks you would know why.

ray

[cagimaha]

How many coils? How many cylinders? And is it wasted spark?

What you really need to know is how many times one of the spark plugs fires in a 360 revolution of the crankshaft. On your generic four stroke this will be either once every 360 (wasted spark) or once every two revolutions. As long as you match this it should work.

[ssray]

2 Coils, so waisted spark. will look on that site.

Ta

Ray

[blow_away]

Make sure the tacho is known to be good.

On my old slabby I had a tacho with damaged glass. I swapped it for another with good glass, only to find the "new" tacho caused a misfire and the bike wouldn't run above 8000 rpm. Took me absolutely ages to figure out that it was the tacho causing the problem. How I laughed