Quote from: Jayke on March 01, 2014, 12:23:16 PM
What do you think about this? The gold circle things not sure what they're called, the left one is open a tad, all the time?

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Those are the butterfly valves.  And you want them to stay slightly open (see my TLDR); the one on the left (looking at the picture) is about right, make sure they're both even.

Have u managed to get the bowls and top off??
Have your new jets arrived ?? Did u used motocarb.co.uk in the end??

Quote from: Crasm on March 01, 2014, 01:34:43 PM
Have u managed to get the bowls and top off??
Have your new jets arrived ?? Did u used motocarb.co.uk in the end??

He posted a pic with the right bowl off and the left resting on it being held by an Allen cap screw and others out.  From that I'd say he got all the screws for the bowls out (which is IMO the hardest part of changing the jets).

And since he started, I presume he has his jets

Another way to get those pesky screws out is to cut a slot into them with a dremel or similar and use a flathead to turn em out. I was equipped with proper JIS screwdrivers and an impact driver and still ended up using the dremel slot method.

- Bboy

Quote from: BockinBboy on March 01, 2014, 01:46:47 PM
Another way to get those pesky screws out is to cut a slot into them with a dremel or similar and use a flathead to turn em out. I was equipped with proper JIS screwdrivers and an impact driver and still ended up using the dremel slot method.

- Bboy

Only as a last resort, sparks and steel grit are the last things you want around a carb.

EDIT: I had a stubborn screw on a set of carbs off of a Yamaha FZ1, it took two people to remove 1 screw, me on the vice grips grabbing the screw and the owner of the Yami using channel locks to keep my vice grips from popping off the screw. So vice grips have worked 100% for me!

Managed to get the float screws off. Ended up sawing a slit in the remaining 4 I couldn't get of and using a flathead. Was very very hard. Still not sure how to adjust the butterfly valves though,  I did read your tldr rado just can't see it.

going back in a min to put it back together I think. Getting late. If anyone knows how to on an 01 carb it'd be appreciated. Pics help alot too!

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Quote from: Jayke on March 01, 2014, 02:37:18 PM
Still not sure how to adjust the butterfly valves though,  I did read your tldr rado just can't see it.

'07 carbs in photo, the screw should be in the same place...look down from the top, it's accessible with a Phillips screwdriver from the top.

Lifesaver! Sorry I'm a bit slow. Pictures help alot   thanks alot!! Back to putting her together. Much appreciated!

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How you get your jets so quick??
I ordered mine on wednesday night and still not arrived yet
Presuming you used motocarb??
Im doin my jets next saturday , so looks like i best get some new bowl screws before i start and i best borrow my impact driver and dremel from work this sounds like its goin to be fun!!

What jet size did you settle on in the end??

Quote from: Crasm on March 01, 2014, 03:59:45 PM
How you get your jets so quick??
I ordered mine on wednesday night and still not arrived yet
Presuming you used motocarb??
Im doin my jets next saturday , so looks like i best get some new bowl screws before i start and i best borrow my impact driver and dremel from work this sounds like its goin to be fun!!

What jet size did you settle on in the end??

Well I contacted motocarb thursday night around 8pm, we sorted our deal, he posted them on friday and received them at about 10pm saturday. If anyone else here ever needs jets in the UK, Motocarb has a BIG vouch from me, not to mention he replied in about 5 minutes at 8pm lol!

Doing the re-jet itself is fairly easy, the only trouble I had was the damn float bowl screws to actually get to them. I ended up using a little hack saw and sawing myself a nice slit on the troublesome screws, then using a big flat head screwdriver with alot of leverage and they came out with a little bit of persuasion! (Crasm - Get yourself some allen head screws to replace them, you'll thank yourself! (rado says somewhere near middle of thread which ones, I believe M4 x .7 for the bottom and M5 x .8 for the tops)

Things I've noticed after the rejet + fitting K&N Lunchbox.....

1. The Lunchbox is LOUD - but pleasing to the ear (right now at least)

2. The bike I think now, is a little rich. BUT - I followed jetting for the Lunchbox and a more free-flowing Delkevic Exhaust, which I will be getting this coming week as I have sold my other bike!

3. Re-jetting is easy (I'm a noob), the hardest bit was finding which lines went where to the petcock as my sharpie got rubbed off from the lines which I carefull marked up!

I ended up going 20/62.5/147.5 as they didn't have a 65 mid main in stock. Will see how it goes!

SORRY about the TL; DR!! Love you guys for all the help, much appreciated 

3.

The idle adjust knob controls how far the right butterfly (left in stevo's pic) is held open; the adjustment screw (near where the throttle cable(s) attach sets the left butterfly with respect to the right.

And yes the hardest things about rejetting is getting the screws out.  Otherwise the process is very easy.  Only other difficult part is understanding what the different jets do and what to change to get the best performance.

I also noticed the stock pipe get a little bit louder with the rejet; but the new pipe really gave it some bark and a lot less restriction requiring bigger jets.

Idle adjustment is a "throttle stop" and affects both sides. It simply limits how far the throttle can close. It would bethe same as making the throttle cable too tight (no free play) or always holding the throttle open a little.

Makes sense I guess, I ended up balancing it by eye, how close it is, I wont know until I get a manometer and test it.

Oh, I also noticed how damn fast the revs dropped when I revved it (made me happy as a mofo ), maybe the old air box did have an air leak, not sure!

Going down to delkevics shop on monday hopefully to pick up a more free flowing exhaust.

This one I think!

http://www.ebay.co.uk/itm/GS500E-89-08-Full-Stainless-Exhaust-System-Down-pipes-350mm-Oval-Silencer-/290931666854?pt=UK_Motorcycle_Parts_13&hash=item43bce0efa6

Look up "hill billy carb sync".
Works when you don't have a mammary-o-meter

Wow! That's a really cool idea, I will have to try that thank you very much!

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Just as an after thought. When I get the delkevic system installed, I'm thinking of getting it dyno'd. Do you reckon they would tell if it was rich or lean?

I've heard that the dyno equipment is quite good and can tell if there's problems with the engine,  anyone know?

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Quote from: Jayke on March 01, 2014, 09:53:26 PM
Just as an after thought. When I get the delkevic system installed, I'm thinking of getting it dyno'd. Do you reckon they would tell if it was rich or lean?

I've heard that the dyno equipment is quite good and can tell if there's problems with the engine,  anyone know?

It depends if their dyno includes an emissions sniffer or not.

Actually lean or rich issues can to an extent be identified based on the way the bike behaves.  Depending on the cost of doing a dyno run, I might be inclined to get a small assortment of jets instead so you can test and see what your butt-o-meter says is best.  Sure a dyno can tell you how she runs on paper, but the key thing is real world performance.

With the stock pipe on mine, I found that a 142.5 main had way more pull than a 140 or 145; that peak indicated it was the best and the 145 not pulling as hard showed that was rich.  I actually pulled the plugs when I was changing the exhaust and the tip of the plug was light tan indicating ideal mix (maybe slightly lean).  An overly lean mix will result in white tips and black tips indicate either a rich mix or fouling from oil etc.

Jayke - i ordered the 65 mid main . . . Only just checked my emails he emailed me on friday saying he was out of 65s and there will be a few days delay . .   doh!!!
Must check emails more often .
And cheers for the heads up ill b getting all those screws before i start
Glad everythin went well for you. Just the exhaust now matey!!

Yeah I guess rado, gonna leave it for now though as these are jets for a more free flowing zaust which I don't heve yet. When I do, the experiments begin about to go check the plugs now, no doubt rich though!

Hopefully between me and crasm we can come up with a good setting for this setup.

That's unfortunate crasm, if you have a smartphone you should get it linked to your emails - never miss an important email again hehe. As for the exhaust, I've messaged delkevic to see if I can collect a system, I only live about 10 minutes from where they're based so hopefully!

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Quote from: radodrill on February 27, 2014, 08:03:45 AM

Quote from: Jayke on February 27, 2014, 07:22:26 AMOnce I've had the bike apart once, I'll be fine with tearing it down. This is my first time when I do it soon so yeah! :p

Most certainly the case; and with your new lunchbox it will be a lot easier (can stay attached to the carbs).  Also, the stock screws on the carbs are a pain to get out; best to replace them with stainless Allen screws; IIRT M4x.7 on the bottom and M5x.8 on top

Im guessing by the bolt sizes given m4x0.7 and m5xo.8
Thats in cm ?? Such as the 0.7 is 7mm in lenth for instancr