Triumphrat

R0B

Hi all,

I've just bought my '97 16,000 mile Tbird. There are some small bits of jobs that needed doing........rear shock change, new fuel pipe to replace the perished stuff, replace a few bolts etc. I was having a close look at the bike for the first time, and noticed that the inlet manifolds looked to be the restricted type. They also were't fitted very well, so I decided as I had lots of bits unbolted, it wouldn't be that much more to take them off. Anyway they're off and they are restricted, so I'm replacing them. From what I've read. I can do this with no jetting or other changes...........is that correct?

I decided as the carbs were off to have a quick look at them. One slide was sticking and when I removed the top, I noticed two springs...........well, the slide return spring was in two bits. I've now decided to give the carbs an overhall as they're off. Do I have to buy a factory overhall kit, or does someone have a list of all the necessary 'o' rings and sizes...........anyone got and good tips for me?.

Thanks

Rob

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Slinky

I would be very surprised if you got away with no rejetting, it will probably run lean as hell. I would expect you to have to go to at least 98s on the main jets, 100s would be closer. Also you would probably benefit from upping the pilot jets to #40.

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98 Thunderbird, 03 Speed Master

IrlMike

Unresrticed rubbers are fine with stock jetting. I wouldn't rush to buy new o-rings etc unless they obviously need replacing. Needle jets tend to wear quickly tho' so they might be worth renewing. Inspect under a strong magnifier for any ovality. Tends to cause some misfiring when picking up the throttle after a shut off. Thorough clean of jets, running thru' with copper wire or similar while emersed in fuel is a very good idea.

Mike

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Legend chassis, Tbird tank/seat, Sprint fairing, tubeless wheels, Thunderbike 3-1, air box mods, 115/40 jets, DJ needles, Ignitech with TPS, ZX6R shock, ZX7R USD forks/yokes, Alcon 6 pot

denny

Triumph does not really sell a rebuild KIT for these bikes.
You have to order the parts you need individually.

Those springs are not that expensive, I just bought a set awhile back. The rest of the parts can be found at some online vendors mentioned in another thread just the other day.

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Cheers,Denny

R0B

Thanks for the replies. If I won't seize it or blow it up, I'll leave it on standard jetting. Just out of interest, will I see any increase in usable power, smoothness or change in fuel consumption?

Thanks

Rob

denny

You'll probably see/feel a little increase in power above 5500 rpm or so. By seat of the pants that's the only difference between my '96 (which still has the restricted manifolds) and my '98 which does not. Milage on both my bikes is nearly identical.

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Cheers,Denny

R0B

Thanks for the reply. In that case, should I save my money and not bother with the inlet manifolds?.

Rob

denny

I think that depends on your style of riding.
And the condition of those manifolds.
If they show any signs of cracking it's a good idea to change them out.

I ride the TBS a little hard, In comparison, I am leisurely when I ride the TBird.

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Cheers,Denny