Topic: What's the deal with the pins that match the cylinder with the case.

[mycb750k6]

The engine I got with my basket case requires some assembly so the knock pins or whatever they are called for the 71 cb750 on the bottom o the cylinder on the two outer front edges  are bent, rusted and the holes in the case  to accept them are full of rust. What's the procedure since they don't appear to be a replaceable item? Do you dig, grind them out of the cylinder bottom and then make new ones or something? These were probably slick when new but now they are just a pain. Not sure how to proceed as the cylinder will not fit down onto the case with these buggers messed up.

[City Boy]

Hi there.The rusty dowel pins are removable.If still available,part # for new ones is 94301-12150,pin,dowel,12x15.   Rock On

[Lavis500]

If they are the same as my 500, they should just be solid dowels, right?  Don't order them - go to your local Ace Hardware!  Measure the dowels with a micrometer or a vernier cliper so that you have a good close idea of their dimensions.  Get the dowel closest.  Most likely they'll have on that is within a hair's width.  Worst you'll have to do is file it down a touch.  Since it's just a dowel, then as long as it fits who cares!  And, of course, the best part is that here it should cost you < $0.25 each.

The issue I ran into was that I bought a piece who's dimensions were the size of the hole in which it needed to go - meaning I had to shave it down a tad for it to fit.   It just took a few minutes with a file, though. I was making a half-circle key for the slide on my carbs, but it's all the same idea.

[HondaMan]

There are 3 different sizes (lengths) on the various 750s. Jump onto kawasakipartsnation.com and look yours up. All but one size are still available from Honda, and that one can be made by cutting down a longer one. 

[mycb750k6]

This is for a 71 K1 so I guess it's the smaller (12X15 maybe??) I'll measure what is left. My bigger question is how to get it out of the cylinder. I have some stainless stock. I suppose I could try to make a set. It's just a rod with a hole in it. The hole size doesn't matter does it as long and the stud can go through?

[Lavis500]

Ah, in that case I rescind what I said.  Thought they would have been the same as mine, which were just solid dowel pins with no holes.  Listen to the Hondaman, as he knows all. 

As for getting it out, since your replacing it I'd just say some PB blaster and a pair of vice grips.  twist back and forth until you can pull them out.

[nokrome]

the easiest way to get those out if they are stuck is to use an easy out
  if they are really stuck you might also need to use some pb blaster and some heat

[MCRider]

the easiest way to get those out if they are stuck is to use an easy out
  if they are really stuck you might also need to use some pb blaster and some heat

ASsuming they are stuck in the cylinder and not the cases?

I used incrementally larger drill bits, (after soaking in ATF/acetone mix), and it spun right out. I had already mangled it beyond belief with vicegrips. To do the vicegrips, put something in the dowel first like the butt end of a drill bit for the grips to clamp down on as they will collapse the dowel otherwise and you'll be left with a stub.