XT 600e dynojet kit,worth it?
 

I am thinking about fitting a stage 2 dynojet kit to my 2006 4PT with K&N filter and arrow exhaust. Bike runs ok with needle lifted up a notch on standard jets, but is not as fast or smooth as my son's older xt600, which is understandably irritating.:(
Has anyone got any experience with these kits?

Grateful for any advice

I got one and works fine for me, dont forget to give more air into the engine. You can try changing the mainjet to 140.

Thanks xtrock ,was it the stage 2 kit you used and did you drill extra holes in the airbox, remove snorkel etc?

Stage 2 kit 4225, if remember correct i got a new needle, jet, and a drill for drilling up the second jet. I removed the snorkel, bike runs perfect. Mine is a 3TB.. What dynojet is known for is the precision needle. I have Yoshimura exhaust, and the aftermarked exhaust pipe and its bigger inside than stock, KN filter. Its fast 0-100 compared to any bike with only aprrox 50HP.

I also have a question. Got the Dynojet kit for my XT600 when I bought the bike. I have K & N filter and Arrow slipon. It feels like the bike wants more fuel at high rpm. So I thought I would install the Dynojet kit.
"Use the slide drill (DD # 40) provided to enlarge the slide lift hole of the CV carb slide."
Which hole is it?
And where is the Fuel mixture screw located?

Regards
Bille

Its the hole in vacuum slide beside the needle.

This drill is 2.5 mm. It sounds to big to be the main jet in the C.V. The second drill is 1.15mm and will be to main jet.

/Bille

Long time since i did this, in the CV carb you drill up the hole in the slide(Diaphragm) beside the needle, its the lift hole and use the 40 drill. 115 is for the main jet in the cv carb. And i changed the main jet in the main carb with a new jet 140

You mean in diapfragm assy, where the needle will sit?

No, beside the needle there is a hole, and remember to put the parts inside back in correct place, the shim holding the needle must have the gap over the hole. Here is pic, the hole to the right side of center.

http://img855.imageshack.us/img855/2246/a500.jpg

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Thank you! It becomes clear enough when I disassemble the carb I hope. It's no good description you get with the Dynojet kit.

/Bille

Yes i agree, not the best to explain and why not have pic of what to do.. I bought a new Diaphragm, the old ones have a little hard rubber and more resistance than the new. It runs really good!!

What year do you have, xtrock? Mine is a -99 and I have done a lot with my bike and now it's only engine left to mod. I will return with a report when I made the mod with the carb.

/ Bille

What's the point to drill there?

/ Bille

The point is to get more airflow and change the vacuum.

Perhaps a new diapfragm with softer rubber can do the same job?

/Bille

Yes the best is new one and drill hole, the set up for the dynojet is to be done with both holes drilled and raise needle. This is how they have tested it to be working best for the carb, why not drill the hole??? 5 years since i have done this to my carb and never had any problems.

Yes, it's worth it. I installed my Dynojet kit today. What a difference. More power at low engine revs and quicker throttle response. I didn´t drill the main jet, the bolt sat too hard. I will try another day. But it works great anyway!

/ Bille

dynojet kit for xt 600 fitted at last
 

Managed to buy a dynojet kit from the states( via Amazon) for $12 ! old stock over there, they stopped importing XT 600's long before Europe.


Stripped and cleaned both carbs, fitted needle and drilled larger air hole as mentioned earlier in this thread. Main jet was already bigger than the drill provided so left alone. Removed snorkel and fitted airbox grill from Kedo in it's place.


Bike started fine but popped and would not tick over. Also bike would surge at point where secondary carb cuts in. Adjusted pilot on slide(left hand) carb by inserting screwdriver bit up into hidden recess and turning until idle speed increased. I did this with the engine cold as when I tried with the engine hot I kept burning my hands. I think some luck was involved but now the bike runs perfectly. Prob about 4 turns out from fully in. Was 2.5 turns with stock needle. Much quicker acceleration and better performance at higher speeds (65-75 mph) Fuel consumption still around 50mpg.
Bike is 4pt 2006,45k,arrow exhaust, k&N filter.
Definitely worth it, to answer my own original question :D

I'm happy for you, tramsam08!:clap:

I installed a larger nozzle (140) in the main jet and the bike runs smoothly and with more power. I reinstalled the snorkel when I find it annoying to hear the sound from the carburetor. Do you? Otherwise I am very satisfied.:scooter:

/ Bille