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MikeDanger

Joined: 21 Nov 2002 Posts: 774 Location: Denver
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Posted: Fri Mar 11, 2011 6:06 pm Post subject: Custom Turbo Headers Project |
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Hi, all havent been here in ages... 931's still in peices... you know how it goes....
But i have a 951 Im trying to get done first, funny thing is in a way I think I would like driving the 931 better.
Anyway, So was last working on equal length headers for the 931, placing the turbo where the AC compressor was (plumbing around the front of the motor)
However the turbo could be placed in the stock location if wanted.
Well So heres the deal, I made a mock up, did fitting etc, in mild steel and just tacking it, since I wasnt up to full welding.
anyway, Id like to find some one who would be interested in helping finish the project, and obviously youd get to copy this design, and make your own.
heres a few pics
 _________________ It was either this or a giant box of legos |
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gegge

Joined: 27 Jul 2007 Posts: 1124 Location: Sweden
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Posted: Fri Mar 11, 2011 6:48 pm Post subject: |
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Looking good! IŽd love to help you - but it is too far away... _________________ Carl Fredrik Torkildsen
924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs |
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ideola

Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI
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Posted: Fri Mar 11, 2011 10:16 pm Post subject: |
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What do you mean by "help"? _________________ erstwhile owner of just about every 924 variant ever made |
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Joes924Racer

Joined: 03 Nov 2002 Posts: 11964 Location: Oregon, Denver Colorado native!
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Posted: Sat Mar 12, 2011 3:06 am Post subject: |
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Im there bro though then again Im not.. its lookin really nice. _________________ 1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.
Last edited by Joes924Racer on Wed Mar 16, 2011 6:52 am; edited 1 time in total |
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MikeDanger

Joined: 21 Nov 2002 Posts: 774 Location: Denver
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Posted: Sat Mar 12, 2011 5:03 pm Post subject: |
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what I mean is, I send them to whoever and they can complete/finalize the project, and make it so they are able to duplicate them. _________________ It was either this or a giant box of legos |
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buldogo2

Joined: 13 Nov 2009 Posts: 79 Location: Nederland, Tilburg
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Posted: Tue Mar 15, 2011 5:04 am Post subject: |
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looks great.
I had the same id on placement.
Project over here was also on a pause because my 944 engine blew up ....
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Joes924Racer

Joined: 03 Nov 2002 Posts: 11964 Location: Oregon, Denver Colorado native!
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Posted: Tue Mar 15, 2011 5:14 am Post subject: |
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Bulldog that pic is pretty sick looking..Are you worried what a ya shop will charge.. I know where to go cause like I said im gone. Ya know not in the great state of Colorado my birth place, " Aaah the scent of the wild grasses and fresh air mixed in the wind."
You did a crazy job on those headers.  _________________ 1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.
Last edited by Joes924Racer on Tue Mar 15, 2011 12:01 pm; edited 1 time in total |
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flosho

Joined: 01 Jul 2004 Posts: 3160 Location: Eau Claire, Wisconsin
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Posted: Tue Mar 15, 2011 5:20 am Post subject: |
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How do you guys plan on draining oil from your turbo with it so low? Seems as though it would be extremely close to being below the oil pan oil level. _________________ [This Space For Rent] |
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buldogo2

Joined: 13 Nov 2009 Posts: 79 Location: Nederland, Tilburg
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Posted: Tue Mar 15, 2011 5:24 am Post subject: |
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thnx,
i'm more afraid of the fact it is possible thad it can't be bend out of one tube per runner (3D bending) than the price it will cost me...
You don't whana know how many $$$ the intake has and will still cost me .
But it looks like MikeDanger his runners are re makable  |
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Rasta Monsta

Joined: 12 Jul 2006 Posts: 11733 Location: PacNW
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Posted: Tue Mar 15, 2011 5:28 am Post subject: |
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Prolly need to actively scavenge, eh? _________________ Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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ideola

Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI
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Posted: Tue Mar 15, 2011 5:41 am Post subject: |
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| MikeDanger wrote: | | what I mean is, I send them to whoever and they can complete/finalize the project, and make it so they are able to duplicate them. |
Interested. PM me with details of your proposition. _________________ erstwhile owner of just about every 924 variant ever made |
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jazz guy

Joined: 26 Nov 2002 Posts: 434 Location: Colorado
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Posted: Tue Mar 15, 2011 9:43 am Post subject: 931 Manifold Concept |
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I've been looking at MikeDanger's header mock up and have a few reservations (not to throw cold water on the project). I think he's done some decent work there... but there is always difficulties involved in turning a piece built out of mild steel elbows & straights into 1 piece exhaust runners. Our company does lots of mandrel bending for the heavy equipment and automotive industry.
-It looks like some of the bends are a bit tight. There is definitely a minimum bend radius to bending due to material flow.
-It looks like some of the straight lengths are a little short. There needs to be enough straight length between the bends so that the clamp jaws can grab the tube to pull the next bend. Special jaws can be machined but that ups the cost significantly.
-Keeping radius measurement uniform should be a design goal. You have to reset the bender setup to change the bend radius. Mandrel benders don't like increasing or decreasing radius bends.
-Limited run, intricate bend projects get expensive quick.
I would like to hear, though, what it sounds like if he gets back to you.
Cheers, Brian _________________ '81/'81/'82
Last edited by jazz guy on Tue Mar 15, 2011 10:10 pm; edited 1 time in total |
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flosho

Joined: 01 Jul 2004 Posts: 3160 Location: Eau Claire, Wisconsin
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Posted: Tue Mar 15, 2011 9:47 am Post subject: |
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Why are you guys so concerned that the runners are mandrel bent from one single piece? Seems superfluous for our engines. _________________ [This Space For Rent] |
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jazz guy

Joined: 26 Nov 2002 Posts: 434 Location: Colorado
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Posted: Tue Mar 15, 2011 1:56 pm Post subject: |
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First let me say my comments above certainly weren't meant to denigrate all the thought, time, and skill that Mr. Danger put into this concept, it looks great. I think it is a very worthwhile project. To get to an end product you have to start somewhere and this is a good start.
| flosho wrote: | | Why are you guys so concerned that the runners are mandrel bent from one single piece? Seems superfluous for our engines. |
Point taken, there sure is the option of making the runners in segments, though I'm not quite sure what you mean by single piece runners being superfluous. For one off or limited run projects a segmented construction might be the best solution. I guess I was looking at it from a production run viewpoint where we are always looking for ways to take individual operational steps out... more operations, more time, more money.
I do think that it would be preferable to use one piece runners but obviously there are numerous factors yet to be determined that will affect the ultimate end design.
Keep up the dialogue.
Cheers, Brian _________________ '81/'81/'82 |
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Rasta Monsta

Joined: 12 Jul 2006 Posts: 11733 Location: PacNW
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Posted: Tue Mar 15, 2011 3:01 pm Post subject: |
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I wonder why more people don't use a simple tubular header and copy the 951 solution. _________________ Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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