Some of them don't have an exact size, thats why they went to a number. There are also letter drill bits.

No the person who is really an idiot is the one that made a letter drill the same as a fractional drill. For example an "E" letter drill is a 1/4 drill bit. A lot of 1/4 drills have an E stamped into them if you look.

For the most part you use the number and letter drills for correct clearance in tapped holes. You also use them for giving clearance in holes where something fits in to it. A 1/4 inch piece of dowel won't slide into a 1/4 hole. So instead of going to the next 64th size drill bit and have .015" of slop you can pick a size that is a lot closer .

 

Glad to help.

 

I'm really pi$$ed off with my bike now!!

I just re drilled the slide and fitted it.. With the needle at the 3rd Pos..

Theres still no freakiiinnnn difference in the damn mid range... Its really getting me fed up of my bike now!!

I went for a ride down the lane and when I shift from 1st to 2nd and accelerate quickly to WOT it still moves like a big PIG!! The RPMs take a lot of time to go to Redline..

What do you think is up with the bike?

The jetting is:

#132 Main
Stock #35 Pilot
DJ Needle at the 3rd Position..

And the airbox snorkle is off...

On that trip which i posted pics of I had done 700Kms total and I had pumped 35 Litres of petrol total too.. So that means my bike only does 20 Kms per litre or 45 Miles per Gallon.. Which is RIDICULOUS!!!

What do you think the problem here is?

PLEEEZZEE HELP MEEEE!!!

Im almost crying lol.. Im sooo angry with my bike.. I would kick it, but I know I'll regret when I get it running fine!

 

Hey Savage, don't lose it man. This IS an awesome bike. Just a question. Did you give the bike a Good clean after you drowned it? An d I mean an oil change at the least. If H2O got inside the engine then your bearings will be toast before you know it if it not all removed. Sound like the fuel consumption is +++too!
The jetting you have is in the ball park so stick with it.
Be methodical. Check the plug for indication of rich running.
It's a simple concept of elimination. Spark. Check. Fuel. Check. Air. Check.
While you've the plug out just check it for a good blue spark. Put the HT cap on and earth the plug to the head. Turn the starter over and check for a good spark. I'd fit a new spark plug just to get a bench on how she's running. While you have the seat off look at the air filter. Is it clean? If not, you know what's next.
Personally I would check the carb' again. One small grain of sand in the air jet can cause all sorts of problems. Once the carb' is out I would strip it/ inspect/ clean then re-assemble. It's only a 5 minute job once the carb' is out. Use plenty WD-40 of CRC to make sure all the water is out. When checking the carb' make sure the jets aren't blocked and the floats move freely. Once you have it back together just check the slide moves freely (you can see down the carb' bore) and that the needle is seated in the needle jet and returns when the slide is lifted and returned. Once totally happy, refit the carb' and fire her up.

Let me know how it goes. Just eliminate one system at a time.

 

Hey, WestOz.. I checked my plug a few days ago, its black. Running rich? Could replacing the spark plug help?

And no I didnt do an oil change after the mudding and going in water.. I really should..

After the trip I did the following:

Cleaned and Oiled Air Filter..
Washed the bike tharoughly and sprayed alot of WD-40..

And one thing I noticed the last time I took the carb apart is that, the the bore of the carburetor, on the side of the engine.. The round is getting black, like inside the exhaust.. What does that point to?


And mainly, THANK YOU SOOOOOO MUCH for Replying to all my threads and helping me Via Email when I have a problem.. I really really really do appreciate it!!!

 

If you are still running 250cc, I'd consider going to the second notch from the top of the needle and possibly a #128 main.

With your present setup, try pulling the entire airbox lid. If it accelerates better, that would confirm that you are running rich.

Careful that you get a good seal at the diaphram lip, and that your needle has completely seated in the slide when you re-assemble. Also ensure that the needle is seated into the needle jet at the bottom of the carb barrel.

My explanations assume nothing, so I apologize in advance if you know most of this already.

 

Recalling the fatal day. Looks like you had some serious water ingress. LOL
Seriously though, that has got to be checked out. You'll need to make sure all the water is out of the oil. Check inside the stator cover (left side) as there is a real risk some water has got into the charging system. From the photo I can see you pulled the carb' breather hoses up. Did you try running it while it was that deep in water? I'm convinced your trouble is from water in the bike. A new plug would be good. Check the spark as I detailed earlier. I'm convinced you'll have to flush the oil, maybe twice or more to remove all traces of water. How was the bike performing before you drowned it?
Use that performance as a benchmark. Getting everything to work as it should after a good soaking can be a trying time. Just be thorough and make sure all the affected parts of the bike are clean and work as they were designed.
The black stuff in the carb' bore. Maybe dirt??
If you got water in the bore or exhaust it could have caused a backfire through the carb. Just clean it off.
Hope it comes good for ya. and isn't too much work.

 

Hey man, before I put the bike into the water, the problem was there.. No difference at all.. So the water isnt the problem.. Theres no difference in the performance before or after the water run.. Its exactly the same..

I rode the bike alot on that trip, and thats how the problem really became a pain in the a$$ to me.. lol... So then I thought must be the slide vent hole is too big and I filled it and re-drilled it, hoping it'll help but it didnt..

The plug looks pretty black..

Im not worried about the water, because it didnt affect the performance at all.. The problem is definitely jetting.. Because, when the bike was all stock it didnt have any problems.. All the problems came after the jetting kit and running without a air box lid/snorkle..

Do you think I should try the stock needle just to see?

 

I think you just answered your own question.
________
Ipad Guide

 

You mean i should try the stock needle?