did i blow it up......

Not a mechanic, but have worked on mine. Alternator light and high temps means that you probably lost the accessory belt. Hopefully you just broke the belt, because you can get similar symptoms if your waterpump locked up and burned the belt off.

POP + white smoke likely means you lost a hose. Might be a lot worse, but that's where I'd start looking. DON'T RUN THE CAR until you know what's broken.

If you're comfortable with it, take the passenger wheel off and the wheel well cover out, and see what's going on.

Good luck.

 

With the described symptoms, that was my first thought.

 

If it's steam ('white smoke'), you probably risked overheating the engine, warping the heads, etc. If the temp gauge was OK when you shut the car down, hopefully nothing worse.

A burst hose is a good guess.

How's the coolant level, now that the car has cooled down?

 

Did the engine detonate?
What was the watter temp when whit smoke appear?

 

Your previous posts indicate you had a problem with the accessory belt earlier. What did you do to fix that problem? New belt? If so, how tight did you put it on there?

Once the car cools, tell us if that belt is still there, and if it's not, whether the water pump turns by hand.

 

This happened to me several years back. The WP sized and burned the belt up. Water temp went up but I shut it down. I was about 5 miles from home. Waited 10 mins and started it up and drove it until temp was almost to the red zone. Shut it down and waited another 10-15 mins. Restarted and got it home. I did not blow a water hose which is what I believe you did due to high temp , high pressure and a weak hose. So find the hose and see if you just fried the belt or the WP sized. Good luck.

 

You lost the belt. It has happened to me 3X Once about 4 miles from home. The second about two (the last was on startup in my driveway). I drove home both times. The 4 mile trip was back in 97, the 2 mile trip was in early 04.

No harm done.

 

Sounds like a water pump. Spend the extra money and buy Nick's water pump @ NickForza Ferrari. I have one, it's a more robust pump. All upgrades he sells is top notch.
Jim

 

Or rebuild the WP yourself. Search Tech Q&A, esp the old fchat for 'water' 'pump' 'rebuild' or 'seal' or 'bearing'.

I've been rebuilding WPs for so long I don't remember which threads had the most info. These threads will get you started help:
http://ferrarichat.com/forum/showthread.php?t=47191
http://ferrarichat.com/forum/showthread.php?t=58483

Also be sure to read the 308 GTB register's wp rebuild tech tip:

http://www.r-design.net/308/index_e.html

 

It's not a really difficult job but if you didn't know that it was time to stop the car it is probably over your head.

 

As others have said, you lost the belt that runs your alternator and water pump. The temperature rose because the pump was not circulating coolant. You likely blew the hose in the V of the engine under the carbs/intake manifold, which is a bit of a pain to replace. At this point, I would replace all the cooling hoses in the car, but that's just me and I have my reasons as many know! If you are lucky, you did not damage the head gaskets. If you are unlucky...you did, and it's going to be expensive (but at least you can have your sodium valves replaced while you're in there....)

Let this be a lesson people, when the alternator light comes on, WATCH THE WATER TEMPERATURE. Chances are the alternator is fine, but the belt is gone. Speaking from experience as a guy who has been flatbedded home a few times...it's just not that big a deal to call a flatbed. Call AAA and get a ride home with your car. It's not worth the potential damage to your car to keep driving it and blow something up.

Birdman

 

The water pump is fine. The belt broke.

 

I'd still would go with Nick's pump the next cam belt change. I'm doing that to mine now, it's a better pump.

 

Those polygrip belts don't just break on their own. Either it was way overtightened, or more likely, a WP or alternator bearing on it's way out seized momentarily(been there).

 

Only mp308 knows for sure -- and he's not telling us

 

Ferrari had a problem with this on many single belt cars. It wasn't a failing wp or alt. It was frequent enough that the factory issued a service bulletin upgrade recommendation in Dec 83. I went thru this many times in a ten year stretch and it was never a bad wp or alt.