The Alfa Thread

[LateFan]

Yeah, I believe that's what that design was for from the factory - racing and dissipating heat. They didn't get disks till....early 60s..? 4-wheel disks appeared in...'65?

[BlackbirdM3]

Yeah, I believe that's what that design was for from the factory - racing and dissipating heat. They didn't get disks till....early 60s..? 4-wheel disks appeared in...'65?

I'm pretty sure the TZs had disks up front, I think it was '63 or so when they went to disks on the production cars. I just got off the phone with Porterfield and it will be about $150 per end for the shoes relined in the R4-1 compound. Not too bad, higher than I was hoping, but it is what it is.

Will

[BlackbirdM3]

True. With enough air flow those bits should dissipate heat a lot better than your typical cast iron drum setup. Maybe put a dab of thermal paste between those drums and the wheels just to improve the heat rejection of the whole system ;)

The helical fins really are cooler to look at than a steel disc. I imagine they'd be a total nightmare to remove on a neglected car.

Actually the wheels would act as a heat sink, more surface area for the heat to transfer to. Im going to run Motul DOT5.1 fluid so it will be plenty heat resistant.

A total nightmare to remove was an understatement. It took me 7 years to get them extracted. I tried heat, cold, several cans of Kroil and other penetrating oils. I finally succeeded using the biggest brake drum puller I've ever seen. I set it up, wound it tight and walked away. Every hour or so I'd come back and give it another 1/8 to 1/4 turn. After about 6 hrs, it would suddenly let go. It startled the hell out of me every time. I'm sitting there working on something and BANG the thing pops free. I'm not about to let that happen again.

Will

[varg]

Actually the wheels would act as a heat sink, more surface area for the heat to transfer to.

That's what I meant.

Not at all surprised that you had a hell of a time getting them off, aluminum + steel with no corrosion inhibitors = a bad time for whoever has to work on it.

[BlackbirdM3]

That's what I meant.

Not at all surprised that you had a hell of a time getting them off, aluminum + steel with no corrosion inhibitors = a bad time for whoever has to work on it.

Actually it was Steel on steel, the centers on the drums are steel. Here is the kicker however. The drums have been the single most difficult things to remove on the car. I've only had 10 bolts or screws break, all the rest have come off with relative ease. That said, I still have one seat mounting screw that I need to drill out and tap. It also appears I have a stuck flare fitting in the rear brakes, that is steel on aluminum... It didn't want to budge earlier this week. Its had a week to soak in WD-40 so perhaps it will come free with a little coaxing.

Will

[Julien]

Quick head removal on a 147 JTDm because of a timing belt failure

[LateFan]

Interesting - is that in the US? How does that work if it's not 25 years old?

Did it bend any valves, or is that non-interference?

[Julien]

Interesting - is that in the US? How does that work if it's not 25 years old?

Did it bend any valves, or is that non-interference?

Not in the US, bent many many valves :)

[LateFan]

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[flyboyx]

what is that? a specially bodied spider?

[LateFan]

That's your specially bodied grandmother!

[LateFan]

Looks like a 2600-based concept car, similar to the coupe, both by Pininfarina in the early 60s. (Note - pre Corvette Stingray)

[flyboyx]

shame they never built that. i really like it.

[LateFan]

Tipo 33 Stradale



Alum alloy main structure - built by an aerospace company. Driver sat down in between them. Tubes were lined to carry fuel close to the center of gravity. Later rubber bladders were used.


Magnesium front subframe and rear arms were cast by Campagnolo the wheel and bike people.


Rubber fuel bladder and rear magnesium arms..

[LateFan]

Upside down here...
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Alum panels fabricated by a coachbuilder were fit to chassis
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Aero tests at new Balocco test track - he didn't like the turbulence behind the wheelwells, which is where the later vent configuration came from. Eventually it was quite slippery.
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