Recent content by srcarr52

You wont see much of a gain, it's more for the modern features like fast idle with the choke lever and better idle from the nozzle style carb. You have to create a longer throttle and choke linkage, and it moves the air filter back a little bit so it's not a direct bolt on. The 3120 carb is a...

If you do catch it on fire snuff it out with the argon from your torch... don't try to blow it out like I usually try first!

No need to tear it all the way down for that area, it's far away from any gaskets and seals that could be damaged from heat. Leave the bar studs in, they are a great place to attach your ground clamp to. I usually clean them with degreaser and bead blast the area if I can. Keep a dedicated...

Yes, that can be welded.

Trace the exhaust port opening onto the piston skirt with a pencil so you can see the shape better.

The people who do drywall for a living hardly sand at all, they sponge the mud when it's just setting up. With quick set mud and the sponge method they can do all the required coats in a day.

My notes say they are at 102.25° exhaust (155.5° duration) stock. I raise them to 100° (160° duration). They seem to turn out well.

You can work the upper transfers towards the intake a little. But the actual intake doesn't need any work.

There is not any room to widen the intake, the piston limits how wide the port can be. I leave the intake alone as machine work adds the necessary duration. They do like a little more ex duration than stock and there is room to go wider there.

Generally my stuff gets enough use it stays covered with it's own lubricating oil or coolant enough not to have any rusting problems. Back in the day at the machine shop lesser used machines raw surfaces would get wiped down with wd40 or marvels mystery oil.

They've been out of business for a while, the owner has passed away. The building they operated out of is dilapidated and graffitied on google street view.

Probably a carbide slitting saw.

I used an internally reinforced cut wheel made by Norton I got from McMaster-Carr, it worked for 63g but I had to dress the wheel down for 50g. Now I can't find the wheel on McMaster anymore.

The stratos open when the top of the piston cut out is above the bottom of the upper transfer, so you've already added a ton of strato timing by dropping the jug so much.

Completely disassembled the motor, measured the run out of the shaft between centers on the lathe and used a press to straighten it.