any porsche mechanics? serious question
 

1995 993 and ive had for 12 years--52k miles

its got towed to dealer so ill get the bad news monday morning from the deal but i was hoping to get some insite to what i did..since she 12 years old and it great shape im forced to fix her...


on highway driving 60mph ish---dowshift 6th to 5th then meant to hit 4 but went into 2---i heard something pop---car drove but lose ton of power---imediatley pulled over---car wouldnt start---felt like not enough juice to start---clutch worked fine when driving after and when trying to start...


PLEASE DONT GIVE ME OPINION UNLESS YOU KNOW WHAT YOUR TALKING ABOUT!!!! THANKS....

you blew the one or more gears in the transmission btw the eagles have 7 homos on there team

Blew the head gasket.

how much?

he would have seen white cloud of smoke if that was da case

and from my description what % would you say that you are correct?

Indeed..sounds like the tranny

it aint head gasket yo

Howard your tranny and/or clutch are fucked......

juicy--what am i looking at $

Why would the tranny result in a loss of power?

at the Porsche dealership??? Damn man if the tranny is majorly fucked take labor + parts + the dealership ass ripping they do i would say minimum 8k

Post the question on the Rennlist 993 board. There are a couple of actual Porsche mechanics that hang out there.

if da gears get fucked when he is accelrating the gears are fucked thus aint moving power to da wheels

If it is ,you probably looking at 5 or 6 k.I had a z28 and the same shit happened..cost me 3500

so why wouldn't the car start? If it was the tranny, the car would run fine until you put it into gear.

If it was the tranny you'd expect to feel/hear the problem not just notice a loss of power. I'm betting engine damage.

Did it immediately lose power and die? Depending on the symptom at that exact moment, the timing chain could have skipped a tooth or broke all together. If this occurred, depending on the valve to piston clearance, you may have some serious engine damage.

no it wasnt

i so wanted to just keep this car forever

It's really impossible to know for sure, but likely it's not the transmission.

What you've done is caused the engine to severly over rev, as if you put in the clutch and just stood on the gas. Did you stuff in the clutch as soon as you realized what happened? The type of damage can vary, but it's not looking like Monday will be a great day for you.

If the chain broke, it wouldn't turn over at all when he tried to start it.

Possible shot tranny but more likely engine damage. If you would lose a gear you would deff. be able to feel that.

When you hit that low gear, revs surely went past what the engine can take. Worst case, bottom end damage (crank, or piston/cylinder) best case, piston hit valve and bent it.

What ever the case, it will be costly. Let us know how it turns out.

absolutly and went into neutral than once it settled down i went back into gear as i was slowing down to pull over BUT CAR DID DRIVE just with a ton less power

like it became a pinto

i promise to post when i get the report

Yeah, it's engine damage. Hopefully in the top end, but hard to know for sure. Shitty deal for you. :(

Is it a TT? Could just be an intercooler hose popped... I had that happen a lot on my Supra. That is some pretty wishful thinking though.

if he over-revved im sure its a fucked up bearing

i like that--that sound cheaper..

I'm surprised no one gave you a hard time about this, but how the fuck do you accidentally put it in 2nd, come on dude, wtf? You must have been drunk or high off your ass, or maybe you just suck at driving stick...

You ran too much RPM, you may have damaged one or more of the valves! Not for sure if that year came with rev limited but slamming the car at speed into 2nd gear could do it.:2 cents:

A bent valve could cause compression loss, and that would be consistant with your power loss.

Good luck! I hope you get it fixed!

A rev limited will make no difference what so ever if you shift in to too low of a gear. It only stops the engine from revving passed the limit.

valves....snapped from the back pressure.

I would totaly disregard anything said in this thread. There are too many variables to diagnose the problem. I did pretty much the same thing once in a 1969 Mustang, and everyone swore I blew the engine. All that happened is the rotor inside of the distrubutor broke. For $8 I was running again. Being that your car is a 95 it probably doesnt even have a distributor, I've never worked on a Porsche so I wouldnt know. Which is why you dont see me posting a diagnosis here. It could be alot of different things gone wrong.

Keep your fingers crossed and wait for the mechanic to call you.

you threw the timing off

real cheap to fix

no biggie

The 993 has a non interference motor. It is very difficult to bend a valve.

Can you give some more details? What was the actual sound? was it a metal clang? what do you mean by pop? did you hear any metal clanking sounds after?

Where you able to shift into other gears? When you were turning over the engine after it stopped can you describe the sound? did it sound like the normal cranking that it always does?

I used to work as a German repair specialist and might be able to help

The first thing you need to do is a "compression test" on all the cylinders.

First thought that comes into my head when the Porsche blows up is - contact GFY :pimp

I once did a 2nd-1st shift instead of into 3rd... Tranny was moving over to the left under hard acceleration and I kept grinding, so I tried to aim a little bit to the left when doing the 3 shift, and let the clutch out in 1st at 70mph.... tach spiked to the bottom and the back end lit up.

Good times.

thats what i would think

been my car for 12 years--driving stick entire life--just made a mistake

i was always under the impression that the rev limiter would cause this not to happen

actually--1 thing a lot of people know is cars--a lot of people has had 922's here-so yes

its at the dealer--i know im fucked--

icqing u

will do and good advice---i thought from my description someone could tell what it is--obviously its not that simple---

Yes, a rev limiter will stop the engine from revving too high of it's own power. In this particular case, the engine is not causing the revs but the high speed of the wheels being transfered back to the engine throught he low gear. The engine can not possibly restrict this type of action.

Imagine if you had a wheel on an axle connected directly to an engine. Now say this engine can only rev at 500RPM and no faster. If you grab the wheel and spin it faster than 500RPM, you will force the engine to rev higher.

Sounds like a head gasket or it could have sucked in a valve, or opposing cylinders that were top dead center at that time could have wacked the top of the valve and bent the stem leaving it partially open.
I dont know if its a turbo, but you could have done something to that from the over rev. It doesnt sound good though.
I hope it's nothing big and costly.
Cheers,
Duke

i hate the rev limiter. Mine kicks in at 6800 rpm's despite having roughly 500 hp. But i know the motor can do 8000 rpms. It kinda sucks because you only have a few thousand rpms to play with when torquing it up. But whats cool is the top speed isnt goverened. I had it to 193 mph for a duration of about 8 or so miles. that was pretty intense. I might add a chip and get new intercoolers. That should push it over the 600hp mark. Great car though.
Duke

didn't you say that there's just no power to get started? Wouldnt' that indicate something electrically rather than all these mechanical problems everyone is addressing?

If that's the case, I like something blown electrically rathern than mechanical. I had a f'd up alternator due to a problem like this....

wish for the best, man.

it's called moneyshift... you miss shifted by going to lower gear which made rpm go over the limit.... your engine is done

id say you fucked a piston or 2