What did you do to your Boss 302 or S197 today?

[TymeSlayer]

Thanks Drew. I loaded up on inner and outer tie rods, a spare alternator kit with belts, axle and ring and pinion bearings as well as wheel studs. Have plenty of fluids but hope NAPA has the annual sale on Mobile 1 5W-50 soon. March I think?

 

[302BOB]

hope NAPA has the annual sale on Mobile 1 5W-50 soon. March I think?

Me too!!! I need to replenish my cupboard also. I'm sure somebody will let us know when it happens..........

 

[desmo900]

Today I did a few practice sessions at Driveway Austin’s L1 and L2 course. After getting flagged to come into the pits for white smoke coming from the rear of my car, I feared the worst, despite having no change in power... Turns out - I blew my right rear axle seal and diff fluid was pouring out into my hot rear brake causing the white smoke. These courses are both really hard on the car’s right side with a lot of hard left turns. Has anyone experienced this? I have a 2014 Track Pack Mustang GT with about 24k miles on it and 10 or so track days on it. Thanks!


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[TMSBOSS]

Yes. I lost a right rear axel seal at Road America. Lost a second at Hastings.

 

[desmo900]

Yes. I lost a right rear axel seal at Road America. Lost a second at Hastings.

Oh wow, ok. So are these considered consumables? Meaning this is something I should expect?


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[Coz]

Has anyone experienced this?

I know someone that had a leak that was probably due to a clogged axle tube vent.

 

[TymeSlayer]

Yes. I lost a right rear axel seal at Road America. Lost a second at Hastings.

Always god to carry spares.

I don't have a full compliment of spare parts but I do keep axle and ring and pinion bearings, alternator and belts, brake pads and rotors, wheel lugs and studs, ties rods as well as fluids, plugs and filters.

 

[TMSBOSS]

Always good to carry spares

It’s also good to have friends that will help you change a seal at the track while also missing free pizza and beer!!!

Thanks again.

 

[Bill Pemberton]

Heh, I didn't help, but I did bring you guys over some free pizza, ha,ha.

 

[TymeSlayer]

It was my pleasure sir. Bill was there to supervise...

 

[TMSBOSS]

A man has to know his limitations.

 

[Bill Pemberton]

My limitations are completely screwed up when I don't have friends like you and Tyme around to assist me. Going to miss not having you run in the Midwest ,ha, ha. All the best to you down South and look forward to some Videos of you running Barber, Nola, and Road Atlanta!

 

[desmo900]

I know someone that had a leak that was probably due to a clogged axle tube vent.

Interesting - I have the puke can attached above the axle, so I’m guessing that wouldn’t likely be the cause.


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[TMSBOSS]

The cause is simply heat. The rear brakes do less work than the front so almost no one adds cooling ducts to the rear. So the heat from the rear brakes cooks the rear seals.
Add seals to your list of service items. When you change the gear lube before a season, change the seals also. Or at least every other year. YMMV.

I have lost two seals in seven seasons.

 

[desmo900]

The cause is simply heat. The rear brakes do less work than the front so almost no one adds cooling ducts to the rear. So the heat from the rear brakes cooks the rear seals.
Add seals to your list of service items. When you change the gear lube befor a season, change the seals also. Or at least every other year. YMMV.

I have lost two seals in seven seasons.

Thanks TMS, excellent advice and the heat makes perfect sense. I guess I had underestimated the amount of stress placed on the rear end due simply to heat.


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[Coz]

The cause is simply heat. The rear brakes do less work than the front so almost no one adds cooling ducts to the rear. So the heat from the rear brakes cooks the rear seals.

And installing ducts back there is tough. The only ones that I'm even aware of are the Shelby ones that they used to put on the Super Snakes. They're like unicorns now.

I assume you don't have the dust shields on. If the axle seals get that much heat, how often do you have to replace the piston seal & dust boot on the rear calipers? Or is the heat conducted faster through the hub into the axle?

Are any wheels more effective than others as a heat sink?

 

[TMSBOSS]

I cooked one set of caliper seals early on. I replaced the caliper and removed the dust shields. No problems since.
I also installed the ABS module. This eliminated the nannies applying rear brake and cooking the pads and calipers

 

[TymeSlayer]

I still have to tackle the 302R/S ABS module but like that it's pretty easy on easy off for street work between track days.

 

[James Zimmerman]

Drove it, hit it with some Griot's garage speed shine and put the cover on. I just bought the car on Thursday. Kona blue/white. Only 6K miles on the clock. Have been looking for a year or more and the price of this one was $5K less than anything else I was looking at with 20K+ miles! So excited to have found this car!

 

[VoodooBoss]

@James Zimmerman welcome to TMO and congratulations on selecting the best Boss color. Post some photos when you get a chance.