Little Mcculloch 797 project

[Frank bierce]

bottom end looks and feels great

piston doesn’t look too bad either
odd, that there is no piston wash on the top? Clean as a whistle
looks like 2.300....020 overbore

 

[Bigmac]

Looks good! That explains the 020 stamped in the block.

Your combustion chamber looks just like the cp

 

[Frank bierce]

Trying to decide now, whether or not to attempt to make this a beauty queen. I have it down this far. Lol.

 

[Bigmac]

Trying to decide now, whether or not to attempt to make this a beauty queen. I have it down this far. Lol.

Do it! It’s a solid saw!

 

[jacob j.]

Trying to decide now, whether or not to attempt to make this a beauty queen. I have it down this far. Lol.

Your piston is in real good shape and your crank is excellent. It's a good candidate.

 

[Bigmac]

And you can add the boost port...

 

[jacob j.]

Is this running yet?

 

[Frank bierce]

Is this running yet?

Lol. Not quite yet. Will likely be getting ahold of Mr. @Glock37 shortly on behalf of this saw.

 

[jacob j.]

Good deal. I've got 125 stuff that is heading his way as well. It'll be interesting to see how this turns out...

 

[Bigmac]

Good deal. I've got 125 stuff that is heading his way as well. It'll be interesting to see how this turns out...

I have been hesitant to powder the 125 tank, wasn’t sure that the tank sealant would take the heat or the powder stick

 

[Scott Kelsey]

I hope Frank doesn't mind me asking in his thread. What does adding the boost port do and how is it typically done?

 

[Lee H]

Nice project Frank. I've done many myself.

 

[Bigmac]

I hope Frank doesn't mind me asking in his thread. What does adding the boost port do and how is it typically done?

It’s pretty easy, this is the earliest cp block, there is a cast spot that only requires cutting out the square hole

even the second cp casting can be done just requiring the same cut out even thou isn’t less defined This is the cover and gasket
I think this is the reason everyone feels the early 797 is the strongest 123cc saw

 

[Frank bierce]

No turning back now....stripping and cleaning for some purdy powder....

 

[jacob j.]

No turning back now....stripping and cleaning for some purdy powder....

Are you gonna do this one up in Husqvarna colors?

 

[Frank bierce]

Are you gonna do this one up in Husqvarna colors?

No...gonna go rainbow. In this day n age...might get away with cuttin a tree down with a rainbow saw. Of course, will hug the tree first.

 

[jacob j.]

No...gonna go rainbow. In this day n age...might get away with cuttin a tree down with a rainbow saw. Of course, will hug the tree first.

That would definitely work in Eugene or Portland...

 

[Bigmac]

No...gonna go rainbow. In this day n age...might get away with cuttin a tree down with a rainbow saw. Of course, will hug the tree first.

Lot of the kart saws were black, yellow, chrome, red white and blue. Basically a rainbow! Lol

 

[Frank bierce]

Stripped