Stage 1 Dynojet - Page 2 - 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 #11 of 22 (permalink) Old 10-05-2019, 09:31 AM
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Hi Pieman
My typo error that's 128 .
Bosch LSU 4.9 sensor and Zeitronix zt-3 meter and gauge. As I understand it, doesn't need calibrating.

Jon

2006 Bonneville T100. Arrows 2-2. Airbox Baffle removed. K+N filter. TTP Bellmouth. TTP BlueFlame coils. TTP jetting kit. Crank case breather moved. 120 mains. 40 pilots. 3 Turns idle jet.
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post #12 of 22 (permalink) Old 10-05-2019, 03:24 PM Thread Starter
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Jonny, are you sure that your AFR gauge was calibrated correctly? 120 mains should be way too lean for your mods.


Hey Pieman

So Iím fitting Kit 4 to my 790 next weekend, there is some confused direction with the kit. Can you give some advice as to what to try first?


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post #13 of 22 (permalink) Old 10-07-2019, 05:53 AM
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Originally Posted by Jonnys Bonnie View Post
Hi Pieman
My typo error that's 128 .
Bosch LSU 4.9 sensor and Zeitronix zt-3 meter and gauge. As I understand it, doesn't need calibrating.

Jon
Hi Jon, as far as I know, all Bosch LSU 4.9 sensors need calibrating in free air before use and every so often to ensure you get accurate results. Even 128's seem lean, but to be fair using the K&N air filter will restrict the jet size required.

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Last edited by PieMan; 10-07-2019 at 05:55 AM.
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post #14 of 22 (permalink) Old 10-07-2019, 05:56 AM
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Originally Posted by Bonnie59 View Post
Hey Pieman

So Iím fitting Kit 4 to my 790 next weekend, there is some confused direction with the kit. Can you give some advice as to what to try first?


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Hi Bonnie59,

what's your setup? As in exhaust and induction mods?

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post #15 of 22 (permalink) Old 10-07-2019, 06:52 AM Thread Starter
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Originally Posted by PieMan View Post
Hi Bonnie59,



what's your setup? As in exhaust and induction mods?


Ok mate, Iíve removed the snorkel, fitted a DNA filter and breathe cover, SAI blanked off and a Tec tracker 2 into 1. I have your no 4 kit ready to fit.. I was also considering removing the baffle from the air box but wonít if it will mess up the fuelling...


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post #16 of 22 (permalink) Old 10-08-2019, 07:41 AM
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Ok mate, Iíve removed the snorkel, fitted a DNA filter and breathe cover, SAI blanked off and a Tec tracker 2 into 1. I have your no 4 kit ready to fit.. I was also considering removing the baffle from the air box but wonít if it will mess up the fuelling...
With Jetting Kit 4 it is essential to remove the internal airbox baffle or your engine will run very rich. As you have the DNA Performance air filter and the Breathe with the TEC Tracker system, I would suggest starting with the larger of the two sets of main jets.
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post #17 of 22 (permalink) Old 10-08-2019, 06:20 PM Thread Starter
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Quote:
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With Jetting Kit 4 it is essential to remove the internal airbox baffle or your engine will run very rich. As you have the DNA Performance air filter and the Breathe with the TEC Tracker system, I would suggest starting with the larger of the two sets of main jets.


Righto; Iíll get them in on Saturday and rip the baffle out as I do it.

This is what I mean by confusing because I thought kit no 4 was for baffle in, so much appreciated mate!

Iíll let you know how it goes.

Iíve not taken these carbs out before so Haynes will have to tell me how. I was going to up jet with the carbs fitted but a previous keeper had chewed up the left hand float bowl screws so they need to come out...

Thanks again and Iíll keep you posted!


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post #18 of 22 (permalink) Old 10-09-2019, 04:44 PM
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Quote:
Originally Posted by PieMan View Post
Hi Jon, as far as I know, all Bosch LSU 4.9 sensors need calibrating in free air before use and every so often to ensure you get accurate results. Even 128's seem lean, but to be fair using the K&N air filter will restrict the jet size required.
Hi Pieman,
I contacted the supplier of my AFR and they confirmed it does not need to be calibrated.
I did change to the Uni from K&N as you advised, and as I have noted (as have others) there is no difference on the gauge reading.

Also plugs are a nice biscuit brown colour, so I'm assuming all is ok.
When I have saved up enough I'll put it on the Dyno.

Jon

2006 Bonneville T100. Arrows 2-2. Airbox Baffle removed. K+N filter. TTP Bellmouth. TTP BlueFlame coils. TTP jetting kit. Crank case breather moved. 120 mains. 40 pilots. 3 Turns idle jet.
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post #19 of 22 (permalink) Old 10-12-2019, 10:46 AM Thread Starter
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Stage 1 Dynojet

Quote:
Originally Posted by PieMan View Post
With Jetting Kit 4 it is essential to remove the internal airbox baffle or your engine will run very rich. As you have the DNA Performance air filter and the Breathe with the TEC Tracker system, I would suggest starting with the larger of the two sets of main jets.


Hey Pieman

So Iíve stuck your 130 main jets in (from 115) and one shim under the needles... I found a loose shim in the left hand needle holder and the right was shimmed; a previous keeper had also ruined the screw heads when attempting to jet the bike I think.. Iíve replaced all fasteners with your stainless kit (very pretty)..





I know you said to remove the baffle but I think you may be muddled with the other kit for my set up (see photo)..



The bike really is sweet now, pulling hard to 90 and just pops a little on the over run (I quite like it..). If you say remove the baffle I will but as I say I think there may be some confusion with the other kit..

Last edited by Bonnie59; 10-12-2019 at 10:48 AM.
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post #20 of 22 (permalink) Old 10-15-2019, 10:59 AM
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Bonnie59, you are absolutely correct, with kit 4 you leave the internal airbox baffle in place. Please forgive my old and knackered brain.

Regards
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