I've got a YJ-91 with the 6 cyl engine (fuelinjected) and it goes easy up to
over 100 mph (160km/h).
But it's not build for highspeeds so i seldom drive more than 60-70 mph.
Don't know why your won't go faster than it does.
Maybe you only have the 4 cyl engine ?

Tommy from Sweden

"David Eagan" <deagan@cogeco.ca> skrev i meddelandet
news:V7bWa.3770$XK4.208485@read1.cgocable.net...
> 88YJ, cant get it to go over 120 kms... running at about 2000rpm at 110 to
> 120 kms... any ideas ??
>
>
> dave
>
>

 

I would do several things.....
1) change out the cap and rotor for larger one like 84 Ford F150 6cyl and
upgrade to an MSD coil.
2) Nutter By-Pass is a MUST.
3) Rebuild the carb and replace every inch of vac line!!!
5)Check or replace the EGR valve
6)If its the orginal cat...replace it
7) Last....timming is everything lol. Not enough advance and your top end
suffers. Then again....too much and BOOM.

Good luck
Brian
88 YJ KC5CTS