T350 needle jet help

[Youngdrakeo]

Hi all

I have a 71 T350 with chambers and new big body MIkuni vm32-193

I have matched what I can to the stock jetting but running
40 pilots
200 mains (needs more)
2.5 slides
Q-0 needle jets
But I can't find 5DP2-3 or 5DL13 jet needles
Unsure if 5DL13 pairs with the Q-0?

Is there anther combo I could use? Someone suggested P2?
Possible there is any tuning information on modifying the T350-port specs and carb tuning?

Thanks

[jabcb]

Welcome to the forum.

The early model years had Q-0 & 5DP2. Later models years had P-6 & 5DL13.
There may have been a poorly documented transition.

Another option is to use jet needles out of carb kits, which are still pretty easy to find.
The needles will be aftermarket. Have no info on how they compare to Mikuni Q-0 & P-6. But they are likely to be similar to the early model Q-0.

Stock T350 carbs have two pilot jets. That second little pilot jet is needed. One of my T350s didn’t have them & it ran like crap at low speed.

Have read about new Mikunis on the T250/GT250. Apparently works well.

Good luck with your build.