I am a newbie, this is my first post... I posted this a few minutes ago, but I cant find the post.

Last weekend, we took our new to us 996 to the track. The car is basically stock, but we did a few upgrades (Olhin coil overs, RSS rear links and engine mounts. short shifter). The car ran very well on the track, until it spun out and caught fire. It wasn't a big fire, but it did melt most of the air box. I think what happened was the fan belt broke and whipped around and cut a slice in the low pressure air conditioning line (compressor hose). the oil and refrigerant dumped out onto the exhaust and caught fire.
1. have you ever heard of the belt breaking and slicing the compressor line?
2. would all the refrigerate have come out? can I start the car without first replacing the hose?
3. I believe its the low pressure line as its a little bigger and on the right side of the compressor. I can see where the line starts at the compressor, but I can quite find where it terminates. What part number is this line? and where can I get it?

Thanks for your help, hopefully this post shows up somewhere in the forum.

Mike Poretti

 

Check out Autoatlanta for parts diagrams: http://www.autoatlanta.com/porsche-p..._911_parts.php

This is the specific page you probably want: http://www.autoatlanta.com/porsche-p...section=813-25

 

Sounds bad. Here is a link to the refrigerant hoses. It takes specialized equipment to recharge the refrigerant system with the right type and amount.
http://www.autoatlanta.com/porsche-p...section=813-25

 

I haven't heard of a belt breaking and slicing the A/C hose and starting a fire after a track spin......are you sure that's what happened?

A frail belt should have been caught on Track Prep Inspection.

I HAVE seen the big brown cam plug on 996.2 engines pop out on a track spin, tangle up in the belt, and dump enough oil to start small fire though..

 

I can’t really find any oil missing, the engine oil is full, the power steering fluid is full, I am not sure what the heck happened or why the belt broke (it was kind of hard, but not frayed)
something cut a slice in the compressor hose...so I assume that’s what caused the fire, but I don’t know.
where’s the big brown cam plug?

 

Will I need to drop the engine to replace the compressor line? I can figure out where the end is

 

You were absolutely right.....the cam plug on the passenger side is missing......now I can sleep again. Thank you so much.
after replacement of the cam plug, do I need to worry about anything else?

 

Man skip was in point with this one.

U deff have to do an oil change but other then that it sounds like the damage is external. Although u may have to investigate why the plug popped out. U may have a failed aos or u overwelmed it with oil and built up too much crank case pressure.

Not sure on changing the ac line but it looks like the soft lines have bolt together connections in the engine bay. U probably just have to pull the ac compressor.

http://www.autoatlanta.com/porsche-p...-05§ion=813-25

 

I have been told I have Super-Natural Powers when it comes to diagnosing/knowing whats going on with engines.

Since you are a Newby, you got some catching up to do, and need to stick around a while, and keep posting.

Your event is not a common one, but is a very interesting one and can lead to some very good data for future owners, if you will do the tests and report the data.

You need to install a new big brown cam plug and do a "blow-by test" with a Manometer test kit like is shown in my Thread "Engine Health Blow-by Test" ..and report the data.

And need to install a UAOS crankcase breather kit after/during the data is collected .( yea I know it a selfish plug of my Invention/product).

The A/C hose is very thick rubber and the damage my be just cosmetic, post pics and test A/C pressure to see if the system is still charged.

Also you need to change the Title to " Not air conditioner hose, but very interesting".. and delete the duplicate thread

 

You might want to check Type 2 overrevs. The belt separating could be due to a money shift. Or it could be because the A/C compressor seized up due to the pre-existing hole in the hose.

 

I am happy to do the research and do the blow-by testing . There is no question about the AC hose being cut, its a slice that you can stick your finger in, Please see picture below. I still cannot find the end point of that AC hose...the part seems to be about $600...which makes me think that I need to drop the engine to replace or remove and repair...any ideas?
I am attaching the

 

Whoa...and wow!! Your AC line is the least of your worries with all that stuff burned up. You've got a lot of work ahead of you. Never seen anything like that.

 

I would definitely drop the motor and do it right.

 

It's really not as bad as it looks. The picture was before I power washed it. Ordered a new trunk lid, air box, belt, pulleys and cam plugs....and we will be most of the way to completion. Just need to figure out the ac hose replacement. I think its a bit of labor and about $1,000. (plus the AC hose)

This is a track car with 120k miles, not a beauty queen...although, she was pretty nice prior to the fire. Its a good lesson to keep an eye on your cam plugs....the oil drips straight onto the exhaust and does not end well.

Can anyone tell me were the AC hose connection is?

 

I think u can access the other side of that line from the bottom. Just follow it down the firewall.


Also the price in that hose is steep. I would try an porsche auto dismantler. The used part would be fine, just install new o-rings.