Past the Halfway point

Larzfromarz · Post by **Larzfromarz** » Sat Feb 09, 2013 10:57 am

Absolutely only bake the metal stuff-and pre assembly- it did look like he had this down to just the block.
If you get much hotter you may as well drive out the valve guides any anything else press fitted. Melty seals are no good....

ByTheLake · Post by **ByTheLake** » Sat Feb 09, 2013 11:41 am

Larzfromarz wrote:Absolutely only bake the metal stuff-and pre assembly- it did look like he had this down to just the block.
If you get much hotter you may as well drive out the valve guides any anything else press fitted. Melty seals are no good....

I was actually wondering about valve guides. I used roughly 500 degrees (kitchen oven) to remove/swap my guides during a previous restoration.

Larzfromarz · Post by **Larzfromarz** » Sat Feb 09, 2013 2:09 pm

They'll be fine if not disturbed. Nice to know you could do the job if you had to.
We only used about 350 deg f to warm up the aluminum (or magnesium) aircraft wheels for bearing race changes. Too hot and I begin to worry about the heat treatment of the alloy.

Rocketsled · Post by **Rocketsled** » Sat Feb 09, 2013 4:43 pm

Naw, I'm not that dense, the motor is 99% disassembled. Baked were the Top Case, Bottom Case, Cylinder, Head, and top cap...the Top Cap still had the engine mounts in...which is what baked.

The paint IS harder, but I can see why flat paint isn't a popular option with manufacturers, it doesn't take ANY effort to make it shine.

Spent the morning with the die-grinder polishing the sidecaps and am coming to the conclusion they're just not meant for a polish job. Too many deep scratches and 'patina' to take a good shine. That and the Air Compressor gave it up after 12 years service. Grrrr. I'll degrease/dewax the sidecaps and probably paint them silver.

Larzfromarz · Post by **Larzfromarz** » Sun Feb 10, 2013 7:26 am

Naw Rocket I didn't you do such a thing-
Progressive sand the caps to remove the scratches and then polish should be fine.