Xtrs 125 and 30mm carb ?

[KILLERDOG]

Hi All, just got a 30mm Mikuni carb, and im about to install it on my xtrs 125 with an 105 jet and a nice free flow air filter. My question is the the needle has 5 settings and its on the lowest settings, is this right ? Should I put it on the middle setting (3rd).... ?> thx

[Zorge]

You'll have to experiment a bit with it in order to determine the correct position of the clip.

But tell me, what do you expect to get from 30 mm carburetor on a ancient 125cc pushrod which pump out 11-12 hp in stock?

[KILLERDOG]

Thanks for your advice, I think. Now here is some for you, I have rebuilt cars for over 25 years, and I know that putting a better carb on a carb will not , I repeat NOT make it go faster but it will improve the cars performace in other ways. I have read MANY blogs and forums on this subject and by putting a better quality carb on the bike it should and WILL make the bike run smoother. I know the bike is not going to ride/drive like my Nissan 200sx Turbo which is 300bhp but I intend to make that Chinese piece of crap run a little better than it does now. Oh, and my bike is NOT push rod, its OHC, hope that helps you.....

[Zorge]

Мaybe you have not thought about it, but installing of appropriate CV carburetor, judging by the reactions of people who were messing with them, makes a difference. For example, here http://dx.com/p/diy-zinc-motorcycle-...-silver-175539 you can buy one CV carb for 22-23 quid. True, it's spigot type mount, but this should be one hour job for you to install it on your bike. Or, you could find 30 mm AMAL Concentric and start neverending fun.

[KILLERDOG]

Ahhh, well thankyou for taking the time to reply and help me out. Ive done a lot of reading up. Ive taken aload of pics and they will be posted on a blog soon. Bike is running a lot smoother with the new carb, I wouldn't say its faster, but it certainly runs smoother and accelerates better. Thx again for your advice, Doggy....

[Zorge]

I think it would be useful for others to know what your setup that does the job: јет size, needle clip position, type of air filter, etc.

[KILLERDOG]

Good point , well I put a mikuni 30mm carb on with a 105 jet and 42mm free flow air filter. The needle clip is in the middle position (3rd down) and I have a stock exhaust. I have turned the a/f screw 1 and 1/2 turns out. The bike has always been aweful to start and starting is now improved. The tick over is set to 1500, even though the manual says 1400 rpm. I also have left the 15T front sprocket on. I can honestly say that my bike now runs a lot, and I mean ALOT smoother. I wouldn't say that its faster, it just pulls smoother and runs better. I can not recommend the Mikuni 30mm enough, fantastic and was only £24. Hope this helps anyone.