Stage 1 Dynojet - Page 3 - Triumph Forum: Triumph Rat Motorcycle Forums
Air Cooled Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, Bobber, T100, Speedmaster, America, Thruxton, and Scrambler. Sponsored by: triumphtwinpower.com

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post #21 of 22 (permalink) Old 10-15-2019, 11:02 AM Thread Starter
Supersport 400
Main Motorcycle: Bonneville 790
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Location: Norfolk 🏴󠁧󠁢󠁥&#9176
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Other Motorcycle: Harley MT350 thing ..
Quote:
Originally Posted by PieMan View Post
Bonnie59, you are absolutely correct, with kit 4 you leave the internal airbox baffle in place. Please forgive my old an knackered brain.



Regards


Whoops far too late, itís out now! . I just assumed I was wrong ... I went for the biggest jet (130) and shimmed the needle and itís pretty damn good!
What is the smallest jet on the other kit for my set up?


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post #22 of 22 (permalink) Old 10-22-2019, 01:22 PM Thread Starter
Supersport 400
Main Motorcycle: Bonneville 790
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Join Date: Sep 2019
Location: Norfolk 🏴󠁧󠁢󠁥&#9176
Posts: 99
Other Motorcycle: Harley MT350 thing ..
A quick update on the jetting , now up to 142 (on TTPs recommendation ) and the old girl flies!
So Iíve got a Breathe bell mouth and performance filter fitted, baffle out, fire starter igniter, blue flame coil, 2-1 from Tec, and 142 mains with one shim on the needles. It roars up the rev range and really takes off towards the (new) red line.. pops nicely on the over run when hot and is crisp off the throttle throughout.
I saw a fluctuation in my tacho at about 90 and donít know what this was and itís stable now; she ran out of steam between 90 -100 mph.




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