Thread: 372xpxt mods

Can the ex and intake be widened to 70% or should it be less on the xt model and the muffler 80% or more already have an unlimited coil just not sure how wide to port it thanks.

AFAIK there has been very limited experimentation in porting a 372 xp xt and at least one of the few experiments had fairly devastating results

i read about the failed one and the one mweba done he said he just done a standard woods port wasnt sure how wide that meant also if the cylinder is the same size as the old 372 i cant see why you couldnt port the same width as long as the port had the right shape?

The intake port is going to be limited to how wide you can go by the skirt width. Exhaust probably needs to be under 65% to be safe.

I would NOT go 70% on the exhaust port width. You'll also want to look very closely at the floor of the exhaust port. It is flat. Fortunately theres enough skirt length that you can lower the center of it and reshape it appropriately.

would the squish be good at .020"

would the shape be like a smashed funnel.

Originally Posted by rylan

would the squish be good at .020"

I'd go .018-.020".

Originally Posted by rylan

would the shape be like a smashed funnel.

You want the port shaped such that the ring is tucked back in from the edges in. If it's flat or raised in the center, it's more apt to hang the ring. Both the roof and the floor should be concave.

ok thanks alot