Triumphrat

j98sprint

I need to enrichen the carbs on the Sprint 900 a tad buy moving the needle position. Is it done by moving clips or the placement of shims? Has anyone done this? What should I look out for? Any tips?

Thanks, j98.

Could be a little more to it. I've just recently installed a Jet Kit in my 99 Adventuer. Put slash cut pipes and it was running too lean. Bought jet kit from Factory Pro http://www.factorypro.com. May want to go to website click on MC Tech - they have some write ups on carb adjustmentments. If you plan on doing yourself may want to invest in a Hynes manual. It saved my ass. Good luck.

rmsari,

I had my 99 legend rejeted and put the triumph performance silencers on. I get a LOT of popping in deceleration. Do you get a lot of popping?

Thanks
Tom

j98sprint

The bike runs perfect, no pinging on acceleration or popping on de-celleration; and the mileage is around 40 mpg in the city. I'm running the stock exhaust so there's no need for re-jetting. My plugs are just somewhat on the light (too close to blistered ) side. I know the carbs are set very lean from the factory and I have already reset the idle air screws. I know the needle position is set lean on the carbs and I simply want to reset those.

Has anyone simply reset the needle position on the carbs? I have the factory manual but that is not covered.

j98sprint

LegendTTom, I got a lot of popping on deceleration with slash cuts - main reason for rejetting. If you are getting a lot of popping - your running too lean. I would take back to who did your jetting and tell them running too lean and carbs need adjusted. To correct this they should turn mixture screw out 1/2 turn increments till popping decreases - you will still get some. If you turned out a full 5 or six turns (from being seated) need to install a larger pilot jet. Good luck - let me know how it turns out.

Lurch

Two things young J98,

First, I have heard that the stock spark plugs are a little too hot. They would be the NGK "9" type. I was told that Triumph recommends going with an "8". This is the number in the part number for spark plugs, where the "8" is a little cooler.

Second, you can move the shim up and down on the needle to suit your needs, but this only affects the fuel flow for the last half of the throttle. In other words, if you do a lot of around town riding, using half throttle or less, then there is no impact. When you get on I-95 and stretch its legs, then you start feeling the impact of a main needle adjustment. Also, re-jetting the main jet, only really affects the last half throttle. My buddy put a Dynojet kit in his Trident (mikuni's) and it had a smaller main jet, but had a different size needle and emulsifier tube. We re-set the fuel mixture screws and installed the kit, and he says it feels like a turbo kicks in in the upper half of the rev range.

Best advice is make a change, test the bike, make another change, test the bike. I know, I know, making changes on your bike is a major pain in the ass due to the effort required to remove the carbs, but that is really the only way.

So there is my take on it, if someone has better information for this brave soul (I-95 commuter), please elucidate.

When you coming up here to ride some sweepers?

Lurch

LegendGirl

You got sweepers in Florida, Lurch?

__________________
My Legend

Lurch

****, I let the cat out of the bag. There are some areas in the central to northern part of the state where you can find some really nice roads to ride, lots of oak trees and curvy roads, along with some **** nice horse farms/stables. It actually gets a little hilly too, but not very much. I've been to NC and know the difference, but there are some roads to ride where you aren't staring at a 30 mile straight piece of highway. The challenge is getting out and finding them. We don't get the views from a cliff that you guys do, but that's what they make saddle bags for, getting to the cliffs.

Lurch

j98sprint

Brother Lurch,
I've done the colder plug and the idle air screws. Jetting is fine, I just want to richen up a little with the needle; and the fast ride is where I need it.

Can you give me a walk through on repositioning the needles with the shims? That's where I need the help.

Sunday, March 2nd. I'll be hooking up with the Lake Mary crew and we'll be on the road untill the following Saturday. The destination could be anywhere in the Southeast. We will make it back to Florida to be in Daytona that next Friday or Saturday to hit the dealer show at the race track. You're more than welcome to tag along part way or the whole trip.

j98 the Younger

j98sprint

By the way Lurch, how do you like this weather?