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996 turbo headers

Hello all, I was just sat here wondering wether 996 headers will fit on a 964 engine. Does anyone know?????
Old 11-04-2011, 01:23 PM
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Google turned this up in like 4 seconds.....


Modified 996 headers for 964?

996 exhaust port spacing distance...anyone know?
Old 11-04-2011, 02:54 PM
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Why not run 993tt heat exchangers with flipped flanges... Then you can retain heat.
Old 11-04-2011, 04:01 PM
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Thankyou for the info.I did try googling it but was unsucessfull. It goes to show what a fantastic pool of knowledge this forum is! As regards to heat I would think I have a friend who is a fabricator welder and I am sure we can make something up to fit over the tubes to create some form of heatexchanger.
Old 11-05-2011, 05:34 AM
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We've been waiting for a friend to do that too .
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Old 11-05-2011, 04:15 PM
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Quote:
Originally Posted by 911TT33 View Post
Why not run 993tt heat exchangers with flipped flanges... Then you can retain heat.
This also makes for a killer header set-up. I have one fabricated by M&K with dual wastegates. It's a 60 lb weight reduction (including cat and 964 suitcase muffler) and boost is in nice and early.
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Old 11-06-2011, 04:36 AM
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Quote:
Originally Posted by 911nut View Post
This also makes for a killer header set-up. I have one fabricated by M&K with dual wastegates. It's a 60 lb weight reduction (including cat and 964 suitcase muffler) and boost is in nice and early.
So you are using external gates? Got any pics of this setup?

I agree, the 993tt HE's are a great solution, however, positioning the right turbo on the side of the motor poses some challenges with oil tank clearance.

How did you get around that?
Old 11-06-2011, 12:12 PM
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Originally Posted by 911TT33 View Post
So you are using external gates? Got any pics of this setup?

I agree, the 993tt HE's are a great solution, however, positioning the right turbo on the side of the motor poses some challenges with oil tank clearance.

How did you get around that?
Don't have a picture. I'll take one this week and post it.
I ditched the stock oil tank and used a GSF tank instead. The oil lines needed to be backdated also.
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'91 964 (965) Turbo, SC cams, baby K29, 993 Bishoff H/E's, M&K headers w/dual Tial MV-S wastegates, Rarlyl8 hooligan muffler, Grimmspeed boost controller, BL WUR, FVD ignition mod, port matched intake/injector blocks, Big Reds, Patrick lwfw, GT2 p/p/organic disc, RS short shift kit, -200 lb.
Old 11-06-2011, 04:04 PM
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Quote:
Originally Posted by 911nut View Post
I ditched the stock oil tank and used a GSF tank instead.
Interesting. Never knew GSF made an aftermarket tank. I'd be interested in seeing pics
Old 11-06-2011, 07:02 PM
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As requested:
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'91 964 (965) Turbo, SC cams, baby K29, 993 Bishoff H/E's, M&K headers w/dual Tial MV-S wastegates, Rarlyl8 hooligan muffler, Grimmspeed boost controller, BL WUR, FVD ignition mod, port matched intake/injector blocks, Big Reds, Patrick lwfw, GT2 p/p/organic disc, RS short shift kit, -200 lb.
Old 11-08-2011, 01:12 PM
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If you need pictures of a 996TT turbo setup let me know. I have one of these cars up in the air right now sans rear bumper as I just installed the engine I rebuilt for it and haven't finished buttoning everything up yet.
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Old 11-08-2011, 05:31 PM
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I think pictures are always a good idea!! It lets us lesser mortals see magic
Old 11-09-2011, 01:50 AM
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I'm always impressed by seeing later model components fitted to our earlier cars... seeing a factory 993TT or 996TT engine bay doesn't excite me much. I like seeing earlier hybrid cars which use late model components
Old 11-09-2011, 12:03 PM
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Are you talking N/A or twin turbo headers?
The early 3.6L engine used the same bolt pattern as typical air cooled 911. Later air cooled engines had the flanges flipped. Water cooled engines are a completely different animal.
What are you trying to do?
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Old 11-09-2011, 03:49 PM
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Quote:
Originally Posted by RarlyL8 View Post
What are you trying to do?
Totally trolling...
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Old 11-09-2011, 03:54 PM
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Quote:
Originally Posted by RarlyL8 View Post
What are you trying to do?
I *think* he's looking at fitting 996TT headers on a 964 motor?

Problem is, 996tt headers have oval ports/flanges, and 964 heads have round ports. Will need to modify the header's flanges and primaries to match the 964 heads.

I guess since the 996tt headers are very cheap anyway, it could be a cost effective solution for a TT conversion compared to sourcing 993TT heat exchangers which are very rare, and expensive!

Wonder how much it would cost to mod the 996TT headers to suit earlier 964/911 heads?

Last edited by 911TT33; 11-09-2011 at 07:07 PM..
Old 11-09-2011, 06:27 PM
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Originally Posted by 911nut View Post
As requested:
Maybe to help this discussion, aren't these 993 N.A. exchangers (not the rare 993TT) as the base for your system?
Old 11-10-2011, 03:26 AM
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Paul has 993 N/A exchangers on his 965 single turbo. The original post asks if 996 headers will fit on a 964, while the title line just says 996 turbo headers. All very confusing.
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Old 11-10-2011, 03:41 AM
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Quote:
Originally Posted by RarlyL8 View Post
Paul has 993 N/A exchangers on his 965 single turbo. The original post asks if 996 headers will fit on a 964, while the title line just says 996 turbo headers. All very confusing.
Yes, that's why I offered the clarafication to Paul's posting.
Old 11-10-2011, 03:54 AM
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hello Brian, yes my question was originally will 996 turbo headers fit a 964. It seems with mods to the flanges they will. (ihope so as i am picking a pair up on Saturday that I have agreed to buy) It appears that there is a shortage of 993 turbo headers on the used market. I am still fighting with the insurance company over the value of my burnt out 930,so I am looking at low cost options for turboing my 964.
Old 11-10-2011, 04:25 AM
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