Any motor mod recomendations for an 87 Marathon?

NetMXer

I'm in the process of fixing up two 1987 Marathons that my kids have run into the ground. I'm going to put a lift kit on them as well as some ATV tires/wheels. Since they probably need some motor work anyway (piston & rings at least) are there any typical mods for these models that improve performance?

Thanks for your help.

mb523

Hello NetMXer, welcome to BGW!!

If your going to go with a new piston and rings, boring out your cylinder .50 over and buying an over-sized piston and rings set will give you a little more performance. The usual tune up will help too. Air and fuel filter and a new plug do wonders for an engine. You may want to consider a clutch upgrade depending on the shape of the existing ones and what you are looking to get out of it.

A simple mod is just to make sure the throttle cable it allowing the carb butterfly to open fully for full throttle. The cable stretches with time and can cause a lack of speed. Just watch the cable and butterfly while the pedal is being pressed (key OFF). A small allen wrench easily moves the collar to adjust it.

Hope this helps ya a little bit. Feel free to ask as many questions as you want! Also, post some pics of your carts, we love pics!