TOPIC:

Nessism wrote:

havakaw wrote: So speaking of the seat filters, is there any advantage to removing them if you run an in line filter? Just asking.

Filters for gravity feed fuel systems don't filter all that fine. They are more of a screen than a filter and small particles can get past them.

Amen. I am having to deal with that right now on my ZRX. Just installed a brand new petcock with built in filter and a brand new inline filter, and it would not start. Finally took the carbs off again only to find the new filter nearly clogged and a layer of silt in all four carbs.

So far the carbs seem to be ok. I installed some reamed out 127.5 main jets when I had open exhaust. I put on a 4to1 pipe and have been looking at picking up a selection of jets to fine tune.
Currently all my mix screws are around three turns out.
It has great low end and pulls pretty well up top. However there is a stumble when going full throttle in the mid range.
Any recommendations on jet sizes?

This

www.factorypro.com/tech/tech_tuning_proc...igh_rpm_engines.html