I just got this K&B engine in the mail today. The high speed needle is missing (I knew this before I made the transaction).
Anyone know where I can get one ???

Mark

www.mecoa.com

Thanks John, I found what I was looking for there.
Now, anyone got any ideas on how to fix some stripped threads in the casing ???

Mark

What threads were stripped? The carbuertor barrel where the needle valve screws in?

The head bolts actually go through the head and the sleeve and then thread into the block. It is one of these threads that is stripped.

Mark

So the stripped threads are in the block itself. One of the head bolts won't tighten. Notice the head bolts on mine.

Yes Jeffie, you are correct. The head bolts on yours seem to stick out of the head further than mine.
Does anyone make helicoils that small ??

Mark

Unfortunately you will find there is just too little metal in the block to play with. The solution isn't that hard but it does require some machining experience. A lathe would be useful but not critical. Simply drill the hole in the block for a head stud and make your own custom nut for it. The total cost in parts is minimal and it will be stronger than the original. You will find the threads in the hole are an off size anyway. Like 6-40? So when you install the new stud you can make the threads any convenient size you want. I think like 6-32 is more common. The nut is made from 1/4" drill rod , drilled and tapped and slotted. Easy really.
I almost forgot. The stud is pinned into the case so it is super strong.

Thanks for the idea Jeffie

Mark

Need any more detail let me know. It is a lot cheaper than a $38.00 plus shipping, block.