Triumphrat

thruxster · 02-13-2005

There is a jetting database in the Twin Talk forum , but the Bonneville's jetting is different and not very useful to us. So let's do a jetting database of our own.

Proposed format:
Bike:
Altitude:
Jets, Mains:
Jets, Pilots:
Pilot Screw Adjustment: [ ] turns out
Needle Shims:
Mods:
Notes:

thruxtonone · 02-13-2005

Bike-2004 thrux
Alt-near sea level
Main jets- 140
Pilot jets-42
Turns on Pilot-3.0
Needle -1 shim
Slide-additional .073 vacuum hole added

Mods-K&N's, D&D's with some restriction added, AI removed, allen screws on covers and bowls

Thruxtonone -members album under T

[ This message was edited by: thruxtonone on 2005-06-11 18:08 ]

TCBLF · 02-17-2005

Bike: '04 Thruxton
Altitude: Sea Level
Jets, Mains: 128
Jets, Pilots: 42
Pilot Screw Adjustment: 2 turns out
Needle Shims: 0
Mods. AI, Gone. Perdators pipes.
Notes: At the moment I am running stock airbox. Trying to get as much range (mileage) as possible

TCBLF · 02-17-2005

Bike: '04 Thruxton
Altitude: Sea Level
Jets, Mains: 128
Jets, Pilots: 42
Pilot Screw Adjustment: 2 turns out
Needle Shims: 0
Mods. AI, Gone. Perdators pipes.
Notes: At the moment I am running stock airbox. Trying to get as much range (mileage) as possible

Thrux-ton-up · 02-17-2005

Bike: 04 thruxton
Altitude: 1000-2500
Jets, Mains: 142
Jets, Pilots: 40
Pilot Screw Adjustment: [3 ] turns out
Needle Shims: 1
Mods: AI removed K&N filters, Predator exhaust.

[ This message was edited by: Thrux-ton-up on 2006-03-21 07:45 ]

Thrux-ton-up · 02-17-2005

Bike: 04 thruxton
Altitude: 1000-2500
Jets, Mains: 142
Jets, Pilots: 40
Pilot Screw Adjustment: [3 ] turns out
Needle Shims: 1
Mods: AI removed K&N filters, Predator exhaust.

[ This message was edited by: Thrux-ton-up on 2006-03-21 07:45 ]

karter257 · 04-01-2005

Bike-2004 thrux
Alt-150-200feet
Main jets- 128
Pilot jets- standard
Turns on Pilot- 3.25
Needle - 1.5mm rise
Slide- standard

Mods - K&N's, AI removed

Much more punch now but not front wheel lifting as reported elsewhere but still running standard pipes.

120 mains was too weak - caused hestiation at high throttle & rpm.

132 and 136 did not seem to offer anything over 128 mains.

Rising the needle improved throttle response I felt.

All tests done by 'riding around the block' today in the sunshine :-)

Different pipes and dyno setup to come one day:

Bike-2004 thrux
Alt-150-200feet
Main jets- 134
Pilot jets- standard
Turns on Pilot- 3.25
Needle - 1 shim
Slide- standard

Mods - K&N's, AI removed, Mototwins fitted.

BHP: 73.5bph Crankshaft DIN at 7215rpm

134 main jet as was weak at top end on the dyno now pulls very strong to the red line where as struggled to get beyond 6500 before. See Dyno plot

Needs gearing up according to dyno man. (19T sitting in garage waiting to be fitted :-) )

Going to try 42 pilot out of interest - not really sure I could tell the difference

[ This message was edited by: karter257 on 2005-06-03 01:43 ]

vikingdrvr · 04-01-2005

Bike: '04 Thruxton
Altitude: 2500 ft.
Jets, Mains: 125
Jets, Pilots: 42
Pilot Screw Adjustment: 1.5
Needle Shims: none
Mods: AI removed, airbox removed, K&N type filters, TORs
Notes: Runs strong through entire range, with no stumbles or hesitation.

vikingdrvr · 04-01-2005

It maybe helpful to enter the STOCK SETUP according to the Triumph factory shop manual:

Bike: Thruxton
Altitude: stock settings-Keihin CVK 36
Jets, Mains: 110
Jets, Pilots: 40
Starter Jet: 55
Main Air Jet: 80
Pilot Screw Adjustment: 2.5 turns out
Needle: NBZT
Float Height: 17.0 +/- 1mm
Fuel Level: 2.0 +/- 1mm above float chamber surface

Mods: none/as delivered

Gohm · 06-11-2005

bike: thrux
altitude: 1500
jets,main: 135
jets, pilot: 42
mixture adjustment: 2.5 turns out
shims: 1

mods: airbox removed, k&n filters cones w/ prefilter, vacuum port drilled out, D&D pipes, 17T sprocket

other mods: AI removed, graphics, allen head screws, brake light modulator, xenon headlight, union jack bolts, tooless seat bolts, triumph valve caps.

[ This message was edited by: Gohm on 2005-11-11 15:02 ]