ANY 'EXTRAS'...how to make it 'go' a bit faster?..
 

i got all excited when I saw the link to the german site, installed a translator on windows 10 and excitedly opened the site.

hmm...how to make it go better(rough translation)... tried to 'do' the mod only to realise that its only for the ttr and not ttre..

So anyone got any hints and tips?....

Yes, buy a second bike.. XT will never be fast!

xt/ttre..same as I guess..

tnh I am interested in the xt660r...

Yes its almost the same bike, the 3tb had about 10kg more weight and 45hp. So take it for what it is, great citybike and toy for a little offroad riding. You need to buy a turbo for this if you want real speed, yes you can gain some hp doing this and that but it wont make the big difference. Its all here in the threads, carb, exhaust, airfilter, high comp piston.

I love the bike tbh,she has a carb jet kit,aftermarket air filter and 'sports' exhaust but still runs outta puff at around 50mph.

Has 7000 miles on the clock so aint that worn out.

loud/mechanical engine too. allways thought the tappets were 'out' so I tried to do them today...mistake. tried twice...sounds like a machinr gun now!!!

try again,when its cold....

Set the valves at correct TDC ;-)

Runs out of puff at 50mph? 3rd gear should hit well over 60mph before redlining... So something is definitely off.

Still not 100% certain on which bike we speak of, xt660r should be the never 5 valve fuel injected ones. Theres dedicated forums for them, and peaople acchieve around 50hp meassured at the real wheel after mods. But you talk about jetkits, carbs ect...?

/me be like :blink:

Sorry all my threads are about a tt600re...

id like a xt 660r ..

followed the translated german 'how to' and the downloaded official manual..still sounds shite.

correct tdc?..

Set the valves at correct TDC....

I'm confused as to what you mean by this..please explain..:helpsmilie:

Top dead center.

Theres 2 TDC, you need to use the one after the intake valves open and close, when you turn the engine over counter clockwise.

The genuine manual says there two sets of markings. First set is two separate lines that are for the ignition timing and the second,single line that indicates TDC.

I have just set them using a new set of feeler gauges,following exactly the same process as I did the first two times using different sets of feeler gauges(which are now in the bin)

Much quieter...

Only problem now is it wont tickover!!!:innocent:

You are not talking about same thing, the mark is only one way correct. But if you turn engine 360 degree around the mark is still there, but valves are not open. So big question is, did you set them at the correct position first time? If they where stuck before you started you started adjusting on the wrong TDC, if you got the feeler gauge down there and they was about correct you did it on the correct turn.

Dude,I followed the genuine manual and the 'how to' all three times. Anyhow its done now.
Appreciate the input

hei nick, are you the guy from crete?

in any case, thanks for the huge american scene around the raptor quads, there are tons of go fast parts (and in english sites :) ) , both for the 5 valve and the newer 4 valve motors. your xt660r is a four valve right?

a bigger piston with say 10.5-11:1 compression should add quite a bit of drive

would stay away from the 12:1 for street use.

I'm from Derby....and I ridea ttr 600 e ..for now.

Just been out on a 20 mile 'test' ride. Nearly came home after 1.

Bogs down around 40 and wont go above 60.

Seriously thinking about getting a xt660r now

ok, clearer now

something definitely wrong with your 600 then... should easily do 70-80 mph

could be a bunch of things, would start with the obvious: clogged fuel supply, dirty air filter

the downloadable workshop manual has good troubleshooting list, will be a bit of chore to retype it all here :)

New petrol,air filter clean. Plugs newish...I have just installed a SIGMA jet kit which is supposed to be for aftermarket exhaust and air filter.

Aint feeling the love at the minute.

:(

There's something wrong with your bike. My TTR pulls hard in all gears and runs out of gearing before it runs out of power. Spec sheet claims a top speed of 95 and mine will hit 85 with no problems. Haven't gone faster than that.

I know there's something wrong with my bike..just don't know what.

It was slow before the fitting of filter/pipe and jet kit. I thought the jet kit was supposed to adjust the carb settings to maximise the so called benefits of the filter and pipe combo..:frown:

fresh petrol doesnt mean that flow to the carb is fine... to fully rule this out fuel issues you need to drop the fuel bowl and check that the flow is decent.

what's the color of the plug like?

which XT600 do you have?

i don't. I have a 2003 ttr600e...

ah ok. maybe I read to fast...

check the things already said, but two other thoughts:

- you have two carbs, one for the left channel and one for the right channel. the left one is actuated by the throttle, the other one by underpressure at higher revs. Make shrue the second one is working too. it has a membrane which can deteriorate. check the sizes of the nozzles/jets.

- just to mention it: there is a way to restrict the max. power for new drivers by restricting the airflow through the second carb. the connector between carb and head has then a smaller hole. Not one of these is installed...

Martin

looks like ill be taking the carbs off again...in terms of a 'restictor' what am i looking for?

the connector between carb and head will have a MUCH smaller hole.

sorry to be completely dense here but I have nothing to compare it to. Am in process of taking the carbs out now.

no problemo

http://www.xtmania.de/xttipps/drossel20kw.jpg

This is a restrictor, maybe its just a metal plate between connector and head with a small hole.

Here from ebay unrestricted connectors: VERGASER ANSAUGSTUTZEN YAMAHA TT600 XT600 … XT600Z Tenere … Intake carburetor | eBay

here the restrictor: Yamaha Ansaugstutzen rechts 20 kW für XT 600 Mod.94-95, XT 600E Mod.94-95 | eBay

good luck :-)

When you remove, check right hand carb Diaphragm. The rubber gets hard and maybe problems raising this, check for holes. https://www.google.no/search?q=carb+...HfZuApYQsAQIGw

carbs have now been stripped,blasted with carb cleaner and blown through with a compressor.

Sprayed enough carb cleaner on to diaphragm itself to form a puddle. no leaks.

No restrictor in 2nd carb inlet.

Cant find the paperwork/setup instructions that came with the jet kit though.

Everything,including the air mixture screw is set home. Need to know how many times to backscrew out..think its 2 1/2....

other than what I've done I'm at a loss....

Yes its about 2,5 turn on the xt, when i installed the dynojetkit i raised the needle on the diaphragm and drilled a bigger hole in it. You see the hole beside the needle.

Thank you... I found the instructions.

I have already raised the needle by one clip and drilled the hole too.

installed a 155 main jet(in the slide carb) but the instructions say if its still lean to go with the 160 jet.

It seems to bog down when trying to accelerate...

I have put the 160 jet in.

Next ,and final step in the instructions is to drill the main jet in the cv carb,if still lean. drills are provided.

as I've put the 160 in should I drill it/the cv carb main jet to the larger of the two sizes?....

I have 115 drilled hole on the cv and 140 mainjet and its perfect all the way, plug is good colour always too.

Sorry but I don't understand what you mean.what is a 115 ?...cv main jet 140?..

Yes the drill was a 115 drill and used on the cv, main carb 140. Iam thinking your have more than enough fuel so dont drill bigger on the 160. Hole drilled in that diaphragm was 40

Thanks...so you drilled the the cv carbs main jet?..ok ill do mine. Dya think I shouldn't put the 160 in the slide carb?..

the hole in the cv carb was drilled out to 40 too..

No no thats all wrong, mainjet 140-150, slide jet drill original jet up to 115. If you have drill that size if not do 120 jet. I really dont know what your carb have original, but the xt second crab was 104, drilled to 115. Mainjet 120 changed to 140.

I'm tired and struggling at the minute.

Parts that came with the SIGMA jet kit:
Slide Carb main jets 150+ 160
slide drill 40
cv main jet drill 53 +52

I have put the 160 in and drilled the slide hole to 40 on the cv

,

Well can you tell me what you removed out original? Maincarb is the 150, but dont understand about that 52-53..

changed the main jet in the slide carb to 160 and the pilot jet to '50 -VM' supplied in the kit.

drilled the hole in the cv carb to 40.

the 52/53 are marked a the CV main jet drill. the 52 measures 1.63 mm,the 53.0.55mm using a digital caliper.

moved the clip on the CV carbs needle down one space towards the pointed end..

hope that makes sense ..

Yes, but tell me the size of the jets you removed from carb, what is mainjet and sec carb size?

no markings on the originals I'm afraid.. I lied. theres is but I cant see them clearly. will try again tomoz when I'm refreshed .

Thanks for the help.

Well it seem pretty much to me with 160 on the second carb, do you have any part list to check?

Check with the drills they provided, see how much difference there is when measure on the holes on the jets.

I have posted the parts list I got with the kit and detailed what I have done following the instructions.

tbh I cant physically see the markings on the original jets but have to assume their standard/originals

DUDE iam not talking about what you got, part list for the original jets? We cant solve this if we dont know the original sizes of jets.

So main jet original is 145 for your bike, jet pilot 54, second carb it says not avaible.. so then go for the 160 on the main carb, find out what is the original size on the second carb and drill it up a little.

like i said Dude..cant see the writing on the jets and i don't know what they are from standard. Assume they are standard,whatever that is

I'm not being funny but i got to go to sleep. I'm having trouble focusing.

will try again in the morning.

Ok i found out you have 145 on both jets, so they really went up from the xt carb. Go for 160 on both then, your dealer can provide, maybe try 155 on the second carb first. ¨

https://www.motorcyclespareparts.eu/...or-352279.aspx

Cheers mate for clarifying what standard jetting is. I have put the 160 in the slide carb and used the biggest drill bit on the cv carb main jet.

I have the Yam exploded parts diagram BUT cant tell the sequence of the washer and plastic collar that adjust the needle height. I mistakenly took it apart late last night to check the clip position..it in 2nd one from the pointy end!

Anyone able to help identify the sequence?..

Use slide 3 from top, CV carb is the slide second carb.

out of the five positions on the cv carb needle standard was the third one down . the kit instructions advise to move the circlip down one to position four.

what I'm confused about is the sequence of the white plastic collar and brass washer and how they 'fit' on the needle ..

I think its spring,brass washer,clip then white collar......

does the reainting coller,that holds the assembled needle jet setup in place via two screws , fit so the hole in the bottom of the slide is exposed or covered?..

Yes then move it one down, i have a spring, washer, circlip, washer and plastic collar.

Again thank you. I only have the one washer. Do you know which way the retaining washer fits?..the one with that's held in place with two screws.

I have fitted it so the newly drilled hole is exposed...

Yes you have to see the hole thats correct, mine extra washer came with the kit. Remember to sync the carb so the second carb open correct.

Thanks for all your help. The carbs are back together, and almost back in the frame.

Gave up struggling for a food break!

Started first press of the button and idles smooothhhh...test ride time.

whoa!!!..totally different bike. Smooth linear oomph!!..managed 70mph with ease.

Thanks for all the input.:mchappy:

Great DUDE:thumbup1: Where do i send the bill?

I'm sure the great cosmic exchange will be in touch...:thumbup1:

Whilst the bikes sat on a paddock stand I have left it running to get the engine up to temp prior to dropping the oil.

oil and filter now out and I have noticed the bike smells 'rich'..air/mixture screw backed out 3 turns(as per jet kit instructions)... if I can get access to it I'm going to try and adjust it ....

Access aint the best!!