Recent posts

#1

Project Blogs / Re: Mike's 1973 D22 Complete t...

Last post by RockwoodMike - April 17, 2024, 10:09 PM

#2

Project Blogs / Re: Mike's 1973 D22 Complete t...

Last post by RockwoodMike - April 16, 2024, 10:55 PM

All done..just need to install seals and pistons

#3

Project Blogs / Re: Mike's 1973 D22 Complete t...

Last post by RockwoodMike - April 16, 2024, 10:53 PM

Are you going to hone those cylinders out?

No..You are not suppose to do that..With moisture in the brake fluid, it will cause pits in the walls of the open bore..But if you hone the bore you make it bigger possible causing the piston to seize because it tilts in the larger bore..

The seal is the piston and the square cut o ring..If the piston has pits in it, then you will need to find a new piston..Simpler to find a rebuild..

My pistons are very smooth..A little 3M scotch bright and they cleaned right up..

little paint

Paint!! Paint??  It's powder coat or nothing!!

After sand blasting, then into the sink with Simple Green to wash dust and grit away..Blow dry and then into the oven to burn out any oils or moisture out..400 degrees for an hour or so..

Let them cool down..And it's time for powder!!

Mechanical engineering states that anything made in Red will be more powerful..go faster..have more duration and with brake calipers, make you stop faster!!  

So I have a color called Blood Red..Here are the pictures..

Pic 1..Hung up and ready to powder..

Pic 2..Powdered..

Pic 3..Out of the oven..400 degrees..1 hour


 

#4

Chevy - GMC Chassis / Re: ALDL data

Last post by udidwht - April 16, 2024, 03:32 PM

Your advance is great at 2650 rpm...I'm shocked GM got that aggressive.. actually for GM that is aggressive.

Your temp is quite high for my tastes, 170/185 tops under most conditions. Bear in mind that is my opinion only a few things about temperature. Readings taken near the exhaust port will run 8/10 higher than temps taken from the intake manifold.

The aggressive advance is while at a 'part throttle' condition. Load = throttle position

One can get best MPGs with an AFR of 15-16 at part throttle but it requires added timing from the advance. No lean tuning with a centrifugal only distributor. The added advance combined with leaner condition (at part throttle) will also be cooler running.

#5

Project Blogs / Re: Mike's 1973 D22 Complete t...

Last post by Eyez Open - April 16, 2024, 01:10 AM

Ahh dual pistons,nice setup. GM uses a single piston in my 83,odd how they cheaped out. Are you going to hone those cylinders out? Never seen a caliper sandblated before,little paint and just like new.

#6

Project Blogs / Re: Mike's 1973 D22 Complete t...

Last post by RockwoodMike - April 15, 2024, 10:02 PM

Pic 1..Emergency cables all set up..

Pic 2..Emergency brake handle.

Pic 3..Drum and hubs on..Brake shoes adjusted..

Pic 4..Work on the front calipers tomorrow..

#7

Project Blogs / Re: Mike's 1973 D22 Complete t...

Last post by RockwoodMike - April 13, 2024, 09:19 PM

Found a power steering pressure side hose..1 to install and a spare to carry where ever I go..Gotta start collecting spare parts to carry on the coach

#8

Project Blogs / Re: Mike's 1973 D22 Complete t...

Last post by RockwoodMike - April 13, 2024, 09:08 PM

I checked to be sure the bearings would slide on the hub shaft nice..The inner(big) wasn't nice!!

Pic 1..After 50+ years and 1000s of miles you can see the pounding(not much) the shaft takes..

Pic 2..Emery paper to smooth it out and the bearing slides on now..Before it would just jam up

Pic 3..Outer area of the smaller bearing..The bearing was chattering because it wasn't adjusted right..More emery paper smoothing..

Pic 4..Bearings are all ready to go together..Threads on the adjusting nut are smooth

#9

Project Blogs / Re: Mike's 1973 D22 Complete t...

Last post by RockwoodMike - April 13, 2024, 08:53 PM

Just some reference photos..I am not installing the automatic adjusters..They blew apart before I bought this and tore everything up inside..

You can adjust the brakes by hand and a flat screwdriver..

#10

Topics for all Chassis / Re: making your own gasket wit...

Last post by RockwoodMike - April 13, 2024, 08:44 PM

Both gaskets made and ready..