The BAD AST Project - Faze II

[astroracer]

Thanks Bill, I am really geeked that this thing is FINALLY going together!
Question for you all... What gear lube do you recommend? I am using a Yukon case & gears with an Eaton Truetrac posi. Eaton says to use 80W90 oil (not synthetic) with no additives. There are so many choices out there I'm trying to narrow it down to an off the shelf brand. Valvoline? Pennzoil? Lucas? What is your go to choice?
Mark

[astroracer]

I haven't gotten a lot of "physical" work done in the last couple of days. I have been chasing down parts to wrap up the rear end assembly and working out bracket designs for the A/C Compressor.
Here are some screen shots of my CAD design for the brackets. I have DXF files out to a local metal shop to have them laser cut out of 1/4" plate steel.
This one is the stationary bracket. It is two pieces and will bolt onto the front of the block and over the fuel pump block off plate. What you don't see are the welded on bungs that the compressor will bolt to.

This is the pivot bracket. It will bolt solid to the compressor and pivot around the top bolt boss to tighten the belt. Tightening the bolt in the slot to lock it down.

As they will be when bolted to the engine.

This is a knock off of the Alan Grove 108R brackets. I had to reconfigure the design to get the compressor a bit higher and father out. One to clear the frame and the other to make room for the lower radiator hose to pass thru.
I have been doing a lot part gathering. I need to order springs for the front Vari-Shocks so I have an email out to Alston that I am waiting for info on and a couple others to various suppliers. I knew this was coming when I started the build and now that it is here I find myself a little impatient when I get slowed up... :(
Mark

[cornfedbill]

Thanks Bill, I am really geeked that this thing is FINALLY going together!
Question for you all... What gear lube do you recommend? I am using a Yukon case & gears with an Eaton Truetrac posi. Eaton says to use 80W90 oil (not synthetic) with no additives. There are so many choices out there I'm trying to narrow it down to an off the shelf brand. Valvoline? Pennzoil? Lucas? What is your go to choice?
Mark

I will be running Royal Purple in my M22 and rear end because I will be running open road races and will generate more heat than most applications. The sustained high speeds create a lot of heat. It's amazing what 15 minutes at near full throttle will do. We boiled the clutch fluid last year and had the pedal drop to the floor at 140 mph. That was a bit unexpected and made gear changes difficult. Lucky it was not the brake fluid.

In my experience the quality of today's lubricants is so much better than in the past that most name brand products would be sufficient. Unless you expect to run open road races or on the Autobahn, I would feel comfortable with Pennzoil, Valvoline or Lucas. It would definitely follow the manufacturer's recommendations where they apply.

[astroracer]

Thanks for the info Bill. I talked with Valerie at John's Industries the other day and she said about the same as you. Non synthetic and NO friction modifiers. I picked up a gallon of Valvoline 80W-90 today. I also have shaft seals and new t-bolts to use on the axle installs.