emulsion tubes again

Post by **phuk72** » Fri Oct 26, 2007 4:38 pm

PhatVR6 wrote:damn right, just go to any track day and see how many old golf gti's can still run rings around the evo's and stuff.

Same with the TRX.

Ignoring outright straight line speed at places like Silverstone, Donnington or Snetterton, a well ridden TRX will hold it's own and even embarrass more expensive, more powerful and newer kit.

And in many cases, the power delivery allows the TRX to put the power down better and more confidently so you will get better drive out of corners.

steve speed · Post by **steve speed** » Fri Oct 26, 2007 9:21 pm

phuk72 ,your dam right,,, a mate of mine who Ive been riding with for some years now has got a ducati 1098 with about a Ãƒâ€šÃ‚Â£1000 worth of extras on it,, its looks beautiful,, but guess what hes slower with this than he was with his firestorm ,,the ducati has about 160bhp and on the twisty roads like from Whitby to Scarborough he cant keep up with my trx and that was before i did the tubes and all the mods you see,, sure if he gets close and a straight comes up hes gone ,,but as i like to keep telling him ,it doesnt count on the straight bits

:ps it cost him Ãƒâ€šÃ‚Â£12,000

devlin · Post by **devlin** » Fri Nov 02, 2007 10:42 am

Okay, I just bought a factory pro emulsion tube and jet kit. I put in the tubes and needles and replaced the jet with the same size, 142.5. Checked the float levels and put it all back together and fired her up. It idles fines but when you crack the throttle it dumps a huge load of fuel and backfires through the carby and doesn't want to rev. I had suspicions the needle being a different shape at the ends might have been allowing to much fuel through. So I adjusted the position of the clip. Still no good. I swapped the original needles back in and now it works fine. What could have possibly set wrong with the factory pro needles installed. Do you have to go done jet size with those needles. I have standard filter and repacked stock cans which are pretty free flowing now.

steve speed · Post by **steve speed** » Fri Nov 02, 2007 11:15 am

it might be worth trying to measure the needles and compare them if all you have done is swap needles the factory ones must be smaller,,my carbs are std apart from the tubes which are factory pro,,also did you check the slides and the jet holder ? mine were very rough,,download the Manuel and make sure you have the needle assembled correctly

youngy · Post by **youngy** » Fri Nov 02, 2007 4:38 pm

Check the clip position is as per the FP instructions. As said, check the needle, holder and spring are assembled as per the instructions. Were there extra shims or different springs to fit?

PhatVR6 · Post by **PhatVR6** » Sat Nov 03, 2007 2:21 pm

been out on mine this morning for the first time for weeks.

it's still got that awful hesitancy on and off the throttle.

runs a lot smoother, and is quicker than it ever was, but it's still jerky and not very nice to ride.

I'm thinking of selling it now, don't think i'll get out on it again this year.

devlin · Post by **devlin** » Sun Nov 04, 2007 12:31 pm

martin young wrote:Check the clip position is as per the FP instructions. As said, check the needle, holder and spring are assembled as per the instructions. Were there extra shims or different springs to fit?

There were were springs, needles, jets (137.5 & 142.5), emulsion tubes and a bag of circlips. I've now got in the bike the tubes, springs and just replaced the old 142.5 jets with the new ones. I am running the original needle. Looking at what I pulled out of it I have a feeling a kit, possibly Dynojet, was put through not long before I bought it. All the parts looked in pretty good nick. Now that I have it back in a running state I will go through the whole procedure that FP lay out, make some notes and adjust over the next couple of weeks.

youngy · Post by **youngy** » Sun Nov 04, 2007 12:44 pm

How many clip grooves are in the needle you removed?

3 = oe needle. 6 = DJ needle.

The FP kit is based around the TDM850, hence the jet sizes (TDM has 140 stock).

Using the FP springs with a different needle may not help, as the spring is designed to work with their needle to put it in the right place for given vacuum.

If there were any spacers or shims then these need to be fitted for the new spring to work as intended with the new needle.

DJ kit has a shim to fit between the spring and seat. If this is fitted then I would remove it for the FP kit. If it's not fitted then I doubt there was a DJ kit in there.

DJ kit jet sizes are 138, 142 and 144. As you have a 142.5 fitted this suggests that a DJ kit was not fitted.

PhatVR6 · Post by **PhatVR6** » Sun Nov 04, 2007 11:31 pm

well i've tried 2 sets of carbs, and new emulsion tubes, still rides like crap

next is to check the float fuel level thingys.

youngy · Post by **youngy** » Sun Nov 04, 2007 11:41 pm

sounds like your throttle cables need adjusting phat

devlin · Post by **devlin** » Mon Nov 05, 2007 11:17 am

martin young wrote:How many clip grooves are in the needle you removed?

3 = oe needle. 5 = DJ needle.3 grooves. i put the circlip in the middle goove. The needle had a dull aluminium colour to it.

The FP kit is based around the TDM850, hence the jet sizes (TDM has 140 stock).Ok.

Using the FP springs with a different needle may not help, as the spring is designed to work with their needle to put it in the right place for given vacuum.Maybe I mixed the springs up when swapping them over. I was sure I swap the little plastic inserts one at a time so I wouldn't mix them up. The FP springs were shorter than what was in the carby if I recall when comparing them. The bike ran with the FP springs and the stock needles. May have to try the other combination now and see where I'm at.

If there were any spacers or shims then these need to be fitted for the new spring to work as intended with the new needle.How thick is the shim. There was a washer, about 0.5mm thick, that was on the needle that went between the plastic collar on the needle and the slide. I put that back in. maybe I can try it with it out.

DJ kit has a shim to fit between the spring and seat. If this is fitted then I would remove it for the FP kit. If it's not fitted then I doubt there was a DJ kit in there. Is the shim the plastic collar that was inserted into the end of the spring. That's interesting as the collar was about 5 or 6mm thick so it would up the functional spring rate.

DJ kit jet sizes are 138, 142 and 144. As you have a 142.5 fitted this suggests that a DJ kit was not fitted.Ok. Little clues are every where

Thanks for the feed back Martin. Questions and comments above in red.

I've now got issues with it not starting. Doesn't seem to want to fire. It may be the battery, but it started and was idling fine. I had just cracked the top throttle adjuster to fine tune that and it suddenly dropped to 800rpm for about 5 seconds then stalled. Not it doesn't seem to want to fire and the battery it doesn't take much for the starter solenoid to start clicking. Would a dud battery stop it from firing it it's turning over after a quick charge of the battery?Edit: ignore this last paragraph. I think the battery might be heading south, but the bike hasn't had a good run for a couple of weeks. They really should have put a fuel gauge on the bloody bikes!!!!

Omegaman · Post by **Omegaman** » Wed Nov 14, 2007 2:39 am

any joy with this Devlin.?

its 1.37am and i just got in from removing and splitting my carbs and just waiting my Dj kit and new tubes to arrive

Omegaman · Post by **Omegaman** » Wed Nov 14, 2007 2:39 am

any joy with this Devlin.?

its 1.37am and i just got in from removing and splitting my carbs and just waiting my Dj kit and new tubes to arrive

dandywarhol · Post by **dandywarhol** » Wed Nov 14, 2007 10:52 am

I fitted Factory Pro tubes and needles to my TrXiuM and had a helluva problem setting up the fuelling. The FP needles have a much sharper taper which would indicate they're for more accurate fuelling at higher slide openings (remember the slide opens by vacuum/engine load, not throttle opening). I managed to eventually fine tune the fuelling at lower slide openings by altering the float height a mm at a time. I've misplaced my notes but I'm sure they eventually sat at 13mm.

The final bit of "tuning" was one which threw me - the TPS sensor was a smidgin' out and gave all the effects of running weak!!!! A tweak of the TPS as per the manual and the setup was perfect

devlin · Post by **devlin** » Wed Nov 14, 2007 12:17 pm

Omegaman wrote:any joy with this Devlin.?

its 1.37am and i just got in from removing and splitting my carbs and just waiting my Dj kit and new tubes to arrive

Yeah, it's running really sweat now. Has a slight flutter if I'm a touch low on revs and opening the throttle, kind of normal but could be a bit better. It pulls like a freight train though. Much more than it ever has. Not like a big bore sports bike but has that lovely flat torque pull from down low.

I'm running the FP spring with the little plastic collar and the stock needle. When I have time I am going to try a mix and match of the combos and see what makes a difference. Obviously different spring rates and the taper on the needle will affect it in all sorts of ways. The sound out the exhausts now is awesome. A real pop and crackle at idle and beautiful noise when on song. Especially on the blip and run down through the gears. Can't wait ti ride it in the morning now.