Triumphrat

unitedrocker

Gathering info on my Thrux project. Looking at a setup that consists for:
1000 feet to sea level
Open Exhaust (Predators)
Air Box hacked with K&N's
Air Injection pulled

Jenks Suggestions for the Thruxton with the mods as stated above:
Mains = 140
Pilots = 40 (stock)
Needle Shim = 1 (where do I get one?)
Needle = NBTZ
Pilot Screw = 2.5 turns (stock)
Airhole on slide opened up to 3mm from 2.5mm

Now... Jenks has a NBZT as the STOCK needle... and has a NBTZ as the suggested needle. Anyone know if this is just a typo? (Page 10 of the Jenk's manual)

Thanks!

__________________
Never settle for the usual.

'05 865 Thrux-ton - Super-Duper Modified: painted inner tube caps yellow, purple tassels on the bars, and pink neon lighting.

ivar

NBTZ is the stock needle used in the 865's. Also called Thruxton needles... don't think its a typo

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02 Bonneville - Originally green/silver , now going black. Dual headlights/black fly screen. Emgo Shortys, rubber bellmouth, Uni, AI, 120/42, thrux needles, no shims. Thruxton seat and low bars. Ikon 7614 shocks, renntec rack. A Bonnie Cafetourer..

PAAS

No, No, No. The "Thruxton" needle, also fitted to the 865cc T100, is the NBZT. Look at the Triumph workshop manual and the Haynes book. NBTZ IS a typo in Jenks' doco. Perhaps someone should tell him, perhaps I will.

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Paul.

Herts. UK
Opal & Tangerine 05 T100 (865cc)
(Previously Ducati Monster S4 and numerous UJMs)

ivar

ahh, doh! didn't see that it was TZ/ZT, thought it was the same :chug:

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02 Bonneville - Originally green/silver , now going black. Dual headlights/black fly screen. Emgo Shortys, rubber bellmouth, Uni, AI, 120/42, thrux needles, no shims. Thruxton seat and low bars. Ikon 7614 shocks, renntec rack. A Bonnie Cafetourer..

RedBird

ivar,

I thought you were applying for an editorial job at P. Jenks. :-D

Larry

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Larry
2003 T-100 (790cc), NARK, NH Togas, 8100 rpm rev limiter, 158 main jets, 42 pilot jets (less than 1 turn out on pilot screws), stock needles--no shims. 13 A/F ratio from 1100 rpm to 4000 rpm; 12 A/F ratio from 4000 rpm to 6000 rpm; 13 A/F from 6000 rpm to 8100 rpm.:D
2007 Tiger 1050--White:D--SW-Motech crashbars, Skidmarx rear hugger/chain guard, Calsci +7 windscreen.

unitedrocker

I've messed with a few bikes and their carb needles, and slight taper differences are sometimes separated in the similar manner. (letters or numbers) Yes, TZ vs ZT typo can cause a little confusion. Thanks guys.

[ This message was edited by: unitedrocker on 2007-05-25 08:08 ]

__________________
Never settle for the usual.

'05 865 Thrux-ton - Super-Duper Modified: painted inner tube caps yellow, purple tassels on the bars, and pink neon lighting.

PAAS

In case anyone's interested, I had a dialog today with Jenks about another issue and asked him about the discrepancies in his tuning guide regarding needle names. He confirmed that "NBTZ" is a typo and should read NBZT. He is going to correct this and put a new version up on his site in the near future.

__________________
Paul.

Herts. UK
Opal & Tangerine 05 T100 (865cc)
(Previously Ducati Monster S4 and numerous UJMs)