Exhaust Manifold / Header Recommendations
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Track Day
Joined: Jul 2015
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Exhaust Manifold / Header Recommendations
So, I purchased a porsche 997 Turbo and it had a evolution motorsports evt700 package on it. Apparently, the exhaust manifolds had a number of cracks and when the mechanic removed them to weld, he noticed that the diverter inside the manifold (pyramid thing at the base of where all three pipes meet) had broken off and lodge into the turbo duct. Luckily, it did not get to the turbines. Upon inspecting the second header, the same pyramid thing had already begun coming apart and was connected 1/3 of its sides.
I called Evolution and they said that the headers were not theirs. They now manufacture their own headers and this kit was an older kit. They believe it was fabspeed header and I contacted Fabspeed about their "limited lifetime warranty". I am still waiting on them to get back with me.
Evolution did say that they would work with me on the price of their headers IF fabspeed doesn't cover it under warranty.
My question is what is the best header / exhaust manifold for the 997 turbo? I was only able to find a few manufacturers: GMG, fabspeed, and evolution. Are there any reviews or recommendations? I don't want to deal with constant cracking and repairs. I just haven't found many reviews on any of them and was surprised at the number of cracks on the Fabspeed headers on the car. Thanks for any help...
I called Evolution and they said that the headers were not theirs. They now manufacture their own headers and this kit was an older kit. They believe it was fabspeed header and I contacted Fabspeed about their "limited lifetime warranty". I am still waiting on them to get back with me.
Evolution did say that they would work with me on the price of their headers IF fabspeed doesn't cover it under warranty.
My question is what is the best header / exhaust manifold for the 997 turbo? I was only able to find a few manufacturers: GMG, fabspeed, and evolution. Are there any reviews or recommendations? I don't want to deal with constant cracking and repairs. I just haven't found many reviews on any of them and was surprised at the number of cracks on the Fabspeed headers on the car. Thanks for any help...
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Track Day
Joined: Jul 2015
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Earl,
If my car was stock, I would definitely stick with stock headers, but my car has the EVT tune and 700hp, the configuration needs aftermarket headers from my understanding. I know the Evolution has the lifetime warranty...anyone know anything about GMG?
If my car was stock, I would definitely stick with stock headers, but my car has the EVT tune and 700hp, the configuration needs aftermarket headers from my understanding. I know the Evolution has the lifetime warranty...anyone know anything about GMG?
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Exhaust Manifold / Header Recommendations
Is it a .1 or .2 Turbo? I've read that the headers in the DFI cars can be improved, but the older ones are not worth replacing. Unsure if there's any truth to it.
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Earl is correct. Stock ported headers will support 700HP. You will actually gain some low end torque with them. The primaries are short and reduce the travel to the turbine. The nice thing about the factory headers is they last. Insulated and rarely crack.
Do your research...
BTW, if your mechanic has said that the collector flange has started to come apart, you must take the turbine housing off to inspect the turbine wheel blades and VNT vanes. If you suspect any damage, replace the center cartridge >>cheaper than buying a new turbocharger.
Do your research...
BTW, if your mechanic has said that the collector flange has started to come apart, you must take the turbine housing off to inspect the turbine wheel blades and VNT vanes. If you suspect any damage, replace the center cartridge >>cheaper than buying a new turbocharger.
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From: Cranleigh,England
Hi Kevin,
I'm interested in your comment regarding replacing the central cartridge of the turbos.
Is this part available seperately ?
Is it a diy change ? I am a very competent mechanic, given the right tools for the job.
I ask because my turbos were supposedly too corroded to rebuild (they work just fine, but removed due to actuator rod issues, and chose to get them serviced whilst off).
If I could get new bearing housings (as they were described to me) at a sensible price I would do so.
Cheers
John.
I'm interested in your comment regarding replacing the central cartridge of the turbos.
Is this part available seperately ?
Is it a diy change ? I am a very competent mechanic, given the right tools for the job.
I ask because my turbos were supposedly too corroded to rebuild (they work just fine, but removed due to actuator rod issues, and chose to get them serviced whilst off).
If I could get new bearing housings (as they were described to me) at a sensible price I would do so.
Cheers
John.
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From: Fort Washington, Pa
Hi Oddjob,
Per my last conversation with Mike, it has been confirmed that we will be warrantying the headers. Currently we are awaiting the document numbers from Evolution Motorsports so that we can trace the original order on our end. Please don't hesitate to PM me with any questions!
Evan
Per my last conversation with Mike, it has been confirmed that we will be warrantying the headers. Currently we are awaiting the document numbers from Evolution Motorsports so that we can trace the original order on our end. Please don't hesitate to PM me with any questions!
Evan
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Porsche Performance Specialist
John@Fabspeed.com
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From: Cranleigh,England
Henry,sorry for the slight thread high jack.
Kevin, I'm not sure really. I guess it depends just how much comes with it.
For example, if it were just the housing, and the shaft etc could be swapped across using new bearings and seals, that would be ideal.
If it is the bearing housing, shaft, vtg assembly, and everything bar the turbine and compressor housings, then I can see that would be the bulk of the cost toward a new turbo.
I would still be interested to hear what sort of money that would cost.
I assume there is some setup involved to get the housings correctly aligned, and the vtg adjusted correctly.
Might be worth pming me, or replying on the potential-turbo-issues thread
Many thanks.
Kevin, I'm not sure really. I guess it depends just how much comes with it.
For example, if it were just the housing, and the shaft etc could be swapped across using new bearings and seals, that would be ideal.
If it is the bearing housing, shaft, vtg assembly, and everything bar the turbine and compressor housings, then I can see that would be the bulk of the cost toward a new turbo.
I would still be interested to hear what sort of money that would cost.
I assume there is some setup involved to get the housings correctly aligned, and the vtg adjusted correctly.
Might be worth pming me, or replying on the potential-turbo-issues thread
Many thanks.
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Agree with Kevin the state of the turbos would be highly doubtful. All these stainless headers are bound give out at one point which is precisely why the manufacturer uses cast. It's amazing how gullible some are in sucking up the hype. Truly incredible. No wonder there is a steady steady stream of these things being introduced into the aftermarket. You can hardly blame the vendor.....it'd be like taking candy from babies.
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From: Japan 🇯🇵
This is a great example of an aftermarket part presenting no real value to the OEM part, and potentially damaging the car.
Let's hope that others read this thread and take heed so that it prevents history repeating itself.
Let's hope that others read this thread and take heed so that it prevents history repeating itself.