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Crotchety Old Bastard
 
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New equal length headers

If anyone is interested I have come up with a bulletproof true equal length header that should last longer than your car.
These are made using 321 stainless, the same material I use for my 930 headers. 321 is stronger, lighter and handles heat better than T304.
Primary tubes are equal length.
All welding is back-purged so no slag.
Merge collectors are a work of art that rival Burns.
Tube size will be 1.5", 1.625" or 1.75".
Will fit 911, 964, 993 engines.
Secondaries are being developed as we speak and heat exchangers will follow.
These headers are made in America by US laborers to aviation standards. Quality is top priority and longevity should be second to none.
I will post more as develpoment continues.






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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 09-21-2009, 05:22 PM
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encore!!!
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Old 09-21-2009, 05:27 PM
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Quote:
Originally Posted by RarlyL8 View Post
If anyone is interested I have come up with a bulletproof true equal length header that should last longer than your car.
These are made using 321 stainless, the same material I use for my 930 headers. 321 is stronger, lighter and handles heat better than T304.
Primary tubes are equal length.
All welding is back-purged so no slag.
Merge collectors are a work of art that rival Burns.
Tube size will be 1.5", 1.625" or 1.75".
Will fit 911, 964, 993 engines.
Secondaries are being developed as we speak and heat exchangers will follow.
These headers are made in America by US laborers to aviation standards. Quality is top priority and longevity should be second to none.
I will post more as develpoment continues.





Wow, looks great Brian! Hey, let me know if you need a stock 3.0L to test a set out on... I am only up the interstate...
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Old 09-21-2009, 05:28 PM
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any idea on cost?
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Old 09-21-2009, 05:42 PM
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Cost estimate please...

I'm saving for SSI's and an M&K, but.... put a good price on a package deal and we'll see. I've yet to see much competition for SSI's.

Cost and warranty thoughts?
Old 09-21-2009, 06:13 PM
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Just a thought.........

If you will build these (with heat exchangers) with larger diameter tubing than the SSIs use, you will be providing a header for a void in the existing market. Since the SSIs are basically undersized for any displacement over 3.2 liters, those of us that are planning engine rebuilds could start thinking in terms of 3.3 to 3.5 liter short stroke engines! Even though I already have SSIs on my SC, I would spring for a bigger bore set if they fall in approximately the same price range as the SSIs.
Very nice work!
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Old 09-21-2009, 06:26 PM
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Crotchety Old Bastard
 
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These are not designed to compete with SSI. The SSI heat exchangers are T304 stainless stock replacement long tube headers. These are 321 Stainless medium equal length performance headers with merge collectors.
Yes the available tubing sizes will be 1.5", 1.625", and 1.75".
Pricing will be $1650 for the 1.5" in 321. We will offer optional T304 stainless for $1450.
Heat exchangers will follow and be bolt-on to retro fit in the field and to allow replacement should they become damaged.
I should have a completed version with the secondary pipes in a week or so.
Shane, I plan to do some dyno work using a local race car with a 3.2L Carrera engine but all help is welcome!
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 09-21-2009, 06:47 PM
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Quote:
Originally Posted by RarlyL8 View Post
These are not designed to compete with SSI. The SSI heat exchangers are T304 stainless stock replacement long tube headers. These are 321 Stainless medium equal length performance headers with merge collectors.
Yes the available tubing sizes will be 1.5", 1.625", and 1.75".
Pricing will be $1650 for the 1.5" in 321. We will offer optional T304 stainless for $1450.
Heat exchangers will follow and be bolt-on to retro fit in the field and to allow replacement should they become damaged.
I should have a completed version with the secondary pipes in a week or so.
Shane, I plan to do some dyno work using a local race car with a 3.2L Carrera engine but all help is welcome!
Kudos to you Brian for a great idea - I am talking about a bolt on HX retrofit. That is really smart thinking. I love that idea alone.

Of course I threw that offer out there somewhat in jest as I don't take you to be one that has not thought most things through already... however, my car is a stock 83 with only a topend to it's name, so it might be interesting numbers to compare. My car is available if you decide you want to go down that route. You say the word... I am like a dog chasing a ball when someone says "road trip"... That would give me a good excuse to check out your monster!
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Old 09-21-2009, 07:01 PM
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They look great!!!! Kevin
Old 09-21-2009, 08:39 PM
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Subscribed. As I am planning a rebuild and upgrade, you've got my attention
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Old 09-21-2009, 09:25 PM
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Quote:
Originally Posted by RarlyL8 View Post
These headers are made in America by US laborers to aviation standards. Quality is top priority and longevity should be second to none.






We need more folks like you to get on the Build and Buy USA Brand . Best of luck with your venture , well done . Now just stay ahead of the offshore counterfeiters
Marty
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Old 09-21-2009, 09:43 PM
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Would these be offered for "off-the-road" use? Otherwise, doesn't there need to be a provision for a catalytic converter? Will smog regs. allow these?

Sherwood
Old 09-21-2009, 11:03 PM
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Crotchety Old Bastard
 
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The use of catalytic converters has been designed into these headers. That system is next in line.
Rip-offs are the norm but it will be very difficult for anyone to add in all the features and quality for the price offered. Quality is THE biggest issue with the Asian rip-offs and part of the reason these came to be. These headers are built to aviation standards and I personally do the final QC approval. As with all of my products, for what it is worth, the patent has been applied for.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8

Last edited by RarlyL8; 09-22-2009 at 05:02 AM.. Reason: spelling
Old 09-22-2009, 04:06 AM
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Wer bremst verliert
 
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So the big 'uns for 450 hp supercharged on 3.0 heads?
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Old 09-22-2009, 04:16 AM
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Crotchety Old Bastard
 
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I don't anticipate there will be many who require the 1.75" version. Maybe 3.8L big bore engines and yes, supercharged engines. The 1.625" primaries will likely be most popular.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 09-22-2009, 05:01 AM
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I would be interested in seeing the dyno results of this product vs. other options. Specifically the torque curve with an otherwise stock 3.2.

Good luck with your venture, I try to buy USA products when I can.
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Old 09-22-2009, 05:16 AM
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As many of you know, I'm a snob when it comes to exhausts and I'd be interested in a set when it comes time to replace the B&B's that came with my car.
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Old 09-22-2009, 06:20 AM
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What kind of cams will work well with medium length primaries?
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Old 09-22-2009, 06:43 AM
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Hey Brian-
Happy to offer my '86 track car which is running it's original 3.2, for dyno work. Just had it on a Dyno Dynamics machine last month with my 1.625" European Racing headers and Ben's 911R muffler so I have a good baseline (201.5 whp with old but spoton Autothority software.)

And I'd think that my setup is pretty typical of who'd be interested in your headers.

And I'd be interested in the 1.75" headers when I do a 3.6 transplant over the winter.
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Old 09-22-2009, 06:46 AM
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Just like to point out that longer primaries, ~30", are prefered for revs in the 5-7k region

shorter above that, longer below

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Old 09-22-2009, 07:30 AM
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