View Poll Results: Worst carnage you have ever seen for a Porsche Turbo street engine...
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catastrophic engine carnage...
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That's definitely some carnage, I'd be curious to see if the rods where damaged on one of the first few pulls, and the additional pulls there after cause them to finally let loose. I would also be curious to see how much boost the engine saw on 91 octane as well. If the boost controller was properly hooked up, turning the unit off should have run the car off the wastegates spring pressure.
When installing a EBC you do remove some of the safety features in the ECU, however most units (like the Profec B in question) have safety features to reduce boost if a preset target is hit, the boost pull-back is also configurable. It takes a few moments to setup, but anytime you are increasing boost to any engine or testing performance modifications additional precautions must be taken and it's always good to double check everything before going full pull. At this point none of this helps and it was an expensive lesson, one that many of us speed junkies have experienced or will experiance, but as with any catastrophic failure, it's always good to get to the bottom of it and get back to enjoying the open road once again.
When installing a EBC you do remove some of the safety features in the ECU, however most units (like the Profec B in question) have safety features to reduce boost if a preset target is hit, the boost pull-back is also configurable. It takes a few moments to setup, but anytime you are increasing boost to any engine or testing performance modifications additional precautions must be taken and it's always good to double check everything before going full pull. At this point none of this helps and it was an expensive lesson, one that many of us speed junkies have experienced or will experiance, but as with any catastrophic failure, it's always good to get to the bottom of it and get back to enjoying the open road once again.
There's one of the combustion chamber.... The are only lasted 5 pulls, its unlikely the pistons would have been pitted.
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I couldn't get the unit to set down to 1.1 bar. So I turned the unit off before I drove the car. The unit as Wes points out should have then worked off the waste gates which are 1.0 bar units. So... no it doesn't answer any of my questions... accept for the fact I'll never use one of these units EVER again! It's like playing Russian Roulette!
Last edited by RickEager; Mar 12, 2009 at 01:51 PM.
FWIW with the boost controller off, but the lines improperly ran to the wastegates (due to a kink, or even the wrong port on the boost controller) the wastegates will never open. My problem with my car the whole time was the wastegate line was messed up so it was making 22psi even on pump gas. Luckly I have an extra fuel pump and 60lb injectors. Even then I did it once and never did it again.
On 24/18G's at 1.4bar with just a 5bar you are def. bound to blow up. The lack of fuel that could not be provided was what ended the life of the motor. Even a fuel like C16 would not have helped when the car goes that lean.
As I said before. I am sorry to see this happen, but you are back on the road and that's all that matters!
On 24/18G's at 1.4bar with just a 5bar you are def. bound to blow up. The lack of fuel that could not be provided was what ended the life of the motor. Even a fuel like C16 would not have helped when the car goes that lean.
As I said before. I am sorry to see this happen, but you are back on the road and that's all that matters!
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Joined: Dec 2007
Posts: 635
From: Houston
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FWIW with the boost controller off, but the lines improperly ran to the wastegates (due to a kink, or even the wrong port on the boost controller) the wastegates will never open. My problem with my car the whole time was the wastegate line was messed up so it was making 22psi even on pump gas. Luckly I have an extra fuel pump and 60lb injectors. Even then I did it once and never did it again.
On 24/18G's at 1.4bar with just a 5bar you are def. bound to blow up. The lack of fuel that could not be provided was what ended the life of the motor. Even a fuel like C16 would not have helped when the car goes that lean.
As I said before. I am sorry to see this happen, but you are back on the road and that's all that matters!
On 24/18G's at 1.4bar with just a 5bar you are def. bound to blow up. The lack of fuel that could not be provided was what ended the life of the motor. Even a fuel like C16 would not have helped when the car goes that lean.
As I said before. I am sorry to see this happen, but you are back on the road and that's all that matters!
Matt