300/440/550 Jetting for a modded 550 PP

[Polish jet pilot]

Hi all,

I really need to replace a carb on this baby (right now it is a blackjack 48mm , which is a bit too big). I was thinking to go the 44sbn way.

Question what jetting setup would you recommend? The ski has:

L&S ported cylinder (the ski is quite fast - I guess it's more race ported)
Ocean pro head
Westcoast pipe + coffman's w.b.
Skattrak 15 straight prop

I am looking for jetting that would give some low end pop (if that is possible).

Anybody has a carb like that for sale (jetted)? And yes, I do have a spacer for the SBN.

 

[Polish jet pilot]

Ok, I was thinking:

Low: about 95-110
High: 120-130
Needle?
Spring?

What pop off would you recommend? I also heard that PP motors like the jetting to be switched, meaning the low jet is larger than high jet.

Anybody any input please?

Thank you!

 

[Mr Bojangles]

I'm messing with mine now, but I've read that the pop off should be around 20. I'm going to go with a 2.3 needle and seat. And most people use the 100-110 low and 120-130 high as a starting point.
I've never heard of people reversing the low/high jets before.

 

[Polish jet pilot]

Thx! keep them coming!

 

[Polish jet pilot]

ttt