Recent content by sambo

Just to let people know. Know fixed. Was the carb signal due to the cross over in the protec inlet manifold. Filled it with devcon liquid metal. Now my ski reacts to the jet changes. Carbs dialed in now runs sweet on 120low, 1.5turns 125high 1.5 turns 20psi pop Cheers for your help Thanks to...

Been busy over the weekend guys sorry for not replying. Anyway I can get the bottom end sorted. I can run a 135 on 1 turn with 21psi. But when moving onto high speed circuit it feels lean. So moved up jet sizes to try get a rich mixture on full throttle. the rich mixture never came no later...

Yes large pilot of 145 gave me a little more low down bog. Hesitation goes. But still not right when hold full throttle. It should bog with too much fuel as I am using no high speed jet in my carb. After a lot of research I think I have found my fault. I believe I have a very weak carb signal...

From whatbim reading now single tracks is the way to go on dual pulse line set up. Reading it dramatically changes carb signal which is what I think I am lacking with my case porting.

I have tried 1 high speed check valve now. And 3 flame arrestors to hopefully get better manifold pressure. Still the same. Do people think this case porting is too large for my application.

Th Is was my next question. I'm running a protec mani that has the cross over. Will the cross over effect the carb signal. I have also been told my case porting quite large. I think I may have a carb signal problem.

I'm on 42 thousands of a inch. (1.06mm)

Erm I never measured the plate it came with the 4mil kit from Matt holeshot at HPE. Not sure on the gaskets thickness I want to say I was on 16thou gasket and 30thou. He gave a few and was told to change them around to achieve the correct squish now I know this changes the timing ever so...

I got a 145 pilot to try. Weather was to bad for testing today.

This makes sense. Hope this is the issue

I think that's a type0

The 120loe I can try just 1 check valve. Although mikuni mention about running 2 and I have always run 2 in all my motors. But it's another thing to try. I'm all ears willing to try any ideas now lol

Reading the message that Vortex sent about mikuni trouble shooting chart. Seems the the carbs could be too big for the engine. As I changed the jets up on high and no difference. So that leaves carb a too big or too restrictive. I will try 3 mesh screens as I'm only on ine screen but can't see...

Some specs of the engine and results Engine -62t ported cases with epoxy ramp intake. -61x sleeves port matched. -4mil adr crank shaft -Ada head -Bored to 84mm pistons -Squish 42 thou -175 psi compression. -Carbon tech reeds on stock 62t cage -daul pulse lines -Engine hold pressure of...

I'll get some reading of today's test up later. But yes I was getting a lean hesitation when snapping open throttle from 1/4 throttle, falls on face then rips my arms off. Bit I thought a super large high speed jet would sort it or make splutter with fuel bit nothing changed when going larger jets.