Full Throttle

[FlatTrackin]

I got a 420 Trinity Long Rod engine, K&N clamp-ons, V-force reed valve, 34mm Kiehn carbs, Trinty Pro TT Port, and cool head with 18cc domes, fatty pipes and not sure of the silencers, just know they are FMF's.Shee runs fine, except when you hold the throttle in all the way for more than a second.

 

If you get it a quick rev to full throttle it runs good. It runs good at 1/4, 1/2, and 3/4 throttle when held in. Just at full throttle left side doesnt fire all the time.

 

Here's what i did Result

 

new plugs nothing

checked and cleaned both carbs

completely, no dirt or derbis anywhere nothing

checked floats nothing

cleaned air filter nothing

checked reeds, and valve nothing

swapped carbs, problem still on same side

so I can eliminate carbs completely

 

The jetting is perfect, Ive been racing it with the mods for awhile. I raced it one weekend, got a 1st and 3rd, so you know it was running good, I didnt touch it all week, raced it next weekend, and in the practice laps it started doing this.

 

Can sillencers cause this?

I took the packing out, it was pretty bad. Could the packing somehow get clogged in there?

 

I have no packing to replace it yet, and I dont want to run it with no packing, way too loud with thiis engine.

 

Thank s in advance.

Curt

Edited April 29, 2005 by FlatTrackin