Help Needed with Carbs

Jimkil

Myself and my 17 year old are building a go-cart. As far as we know the engine is a Yamaha FZR250. We have had it running and its quick. We cant get the carbs running well despite our best efforts. The truth is we know nothing about setting them up. So we looking for your help. An chance some one out there would have some free time to give us a dig out. We have tools and space to work. They are Mikuni carbs and may be off a Yamaha xs650. We have stripped and cleaned them. So if you know anything about adjusting them and have some free time please let me know.
Thanks in advance

Jimmy

sean61

Would those carbs be a bit big for a 250? I don't know much about them myself but I've read a bit about carbs recently and I think you're better off having them a bit on the small side. Too big and you won't get a great air/fuel mixture. I have no hands-on experience of this though, so don't take my word for it!

neamhspleachi

spiggotpaddy

The jetting will be all wrong with those carbs especially with those pod filters. You either need to get a set of carbs off an fazr 250 or get the correct jets to suit the engine, then check the valve clearances, and balance the carbs.
It will be far easier to get it running smoothly with a standard airbox with a panel filter.

Jimkil

[QUOTEspiggotpaddy The jetting will be all wrong with those carbs especially with those pod filters. You either need to get a set of carbs off an fazr 250 or get the correct jets to suit the engine, then check the valve clearances, and balance the carbs.
It will be far easier to get it running smoothly with a standard airbox with a panel filter.
][/QUOTE]
Do u know anyone out out there who would do it as mixer.

spiggotpaddy

Where is "out there"?

gctest50

Put the standard airbox back on it to test it out - only take a few minutes

it'll look vaguely like this one :

http://www.ebay.co.uk/itm/YAMAHA-FZR-250-AIR-BOX-/111126233065