Bob (viperbob from rennlist) is in the process of setting up the best Porsche shop N of Miami. Watch for many good things coming out of there.

 

If ViperBob is handling the situation then there's no need to worry whatsoever.

 

I need to know if there is a way to check the oil temp. If there isnt then the tuners need to come up with one, it cant be that hard. Could have saved tom his motor, and here I had been bragging about the turbo not needing one and being very stable with heat.

 

I'm sure there is a easy way to hook up a Autometer Oil Temp. sensor. Regarding Dez's message.

Tom, sorry to hear about your motor.

 

Now that is a big mess!! Sorry to hear, but you would guess something like this has to be expected at some point with the amount of track time the car has. Any engine in any type of racing environment has to be torn down and thoroughly inspected after a certain amount of hours/miles. 10,000 track miles is major track time without a teardown. No matter what though, it certainly sucks for it to happen. Hope you are back up and running again soon. You can't keep that yellow beast down for long!!

 

wow! tom, sorry to hear of your misfortune good time to make some changes. this is the first broken crank I have heard of in a stock motor.

curioius, how often did you service oil change intervals? what kind of oil? weight? figuring you are in fla the operating track temps must be +85?

I have a feeling the 0-40 wt might be too low of viscosity at the extreme higher ambient temps. I have feeling it was something other than broken crank that may have caused this. keep us posted. gl with your new motor.

 

the oil was Mobil-1 and changed AFTER EVERY EVENT!!
you may be right Oak about the oil but I am going with what Griza said above you, I ran the car hard for near 10k miles and now it is done. Would have liked to have a rebuild opportunity instead of a blown engine but again that is the risk I take at the track everyday.
A new motor is on the way...............

 

Am I missing something Tom's engine was not stock, it had a Stage 2 REVO Flash with his K24s.

The stock engine would have had something to go really wrong or a defect for this to happen, it is virtually impossible for a stock engine to break a crank just as a result of track usage only, if it is 100% stock. There are instances where there is a manufacturing problem obviously but this is not the case, this engine was modified and it sounds like the problem came from the software.......Boost, overrevs, detonation or similar.

If people knew what sort of abuse these cars are put into before being released to the public, I think that 10k miles of track time in a stock engine would sound like a walk in the park.

 

Tom already stated that the motor was examined and detonation and oil starvation has been ruled out. The pistons and ring lands would surely show signs of detonation that was capable of this destruction. Oil starvation would show up in all the bearings not just one rod bearing.

 

So I guess that leaves over-revs as the culprit...Either a mis-shift (which does not seem to be the case) or a software problem as I mentioned..

Engine was not stock, that's what we know for sure at least.

 

well new engine is the plan. so what is stock. do I need to keep the cats??
Can I run a straight pipe? An ECU flash that doesnt void the warranty from the dealer seemed benign before, but now?
What about the LWFW? Short shifter ok?

 

Tom, did the dealer actually say the Revo flash would not void the warranty? I cannot imagine a dealer telling a customer that....

 

Tom, nothing done to the ECU is what I would call "stock", or a Porsche factory program. Cats and short shifter are certainly not an issue, neither is a LWFW, none of these will alter the rev limiter nor the boost and timing parameters.

 

I am certainly no one to dispute what you say, I am just curious about a few things. In what racing arena are engines not torn down, inspected and parts replaced/engine overhauled after only a few races? Tolerances loosen quite a bit with the stress load of constant racing and obviously Porsche designed these cars to perform at extremely high levels. But 10k race miles is A LOT of miles with no major maintenance performed stock, chipped etc. What in your estimation is a realistic time frame for an engine being raced regularly by an excellent driver to stay healthy with no major services/maitenance? I am asking this for your opinion and not looking to stir the pot in any way.......

 

What warranty comes with it? If you thrash it at the track do you lose it anyway? Straight pipe OK.....cats only if you need them for an emissions check.....LWFW, a must for a track car......I personally don't like the added stress short shifters cause to a tranny, plus it seems easier to miss a shift.