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harold
 
Join Date: Sep 2009
Location: Eindhoven Netherlands
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Design wise 321 is the best, just look at the spec sheets and compare it with 304. Marketing wise, what is going to be the price difference between 304 and 321?
My 2 cents, you have proved to make great systems with 321. Don't start a price point Battle with the cheaper 304 stuff.
I had to choose a few months ago, worked for me, since I am bolting on your system somewhere next week!
Old 11-19-2009, 10:19 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
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Those look great Brian, what size are the primary pipes? How is the clearance for changing out lower plugs on the drivers side? The lighter 321 option sounds best.
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75 930, 76 930, 83 SC EFI turbo
Old 11-19-2009, 10:23 PM
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Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
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321 it is, glad to see that quality is still valued in this economy.

Primary pipes are 1.5" secondary is 2". I just pulled the valve covers and checked my valve adjustment last week with the waste gate still mounted up, lots of clearance built in. I've got a picture somewhere ...
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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 11-20-2009, 04:04 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #23 (permalink)
Infidel
 
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Brian, i'm with the majority, anyone even looking at your headers has already done their research. The benifits of what you have created, equal length in every way, ease of fitment, retaining stock oil parts, being able to still remove the valve covers with nothing removed, top notch wastegate plumbing...... They will want the best material for the job at the sake of a few extra .

Any idea when we are going to see some back to back dyno data with these, against normal aftermarket B&B syle, and stock? Would be great if you could do the three runs on the same day and overlap the graphs. It's a big ask though
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Jonathan.
87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 11-20-2009, 04:39 AM
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Crotchety Old Bastard
 
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I had dyno time scheduled 2 months ago.
Made a big mistake and removed my engine a week before the dyno run to fix oil leaks and swap tranaxles. Did a lot of "while you are in there's" during the drop. When I put the engine back in the newly rebuilt tranny made a noise so I had to drop the engine again. I wanted to do the dyno work so I put the old tranny back on and put the engine back in the car. Started the car and it ran horribly. Chased that ghost for a week until the mechanic who rebuilt the tranny re-rebuilt it and then I dropped the engine for a 3rd time. Found and replaced a bad injector. Put the engine back in the car and it still runs badly. Tranny sounds good though on the lift. Found 2 leaking fuel lines.
Looks like I disturbed so many old components that they have revolted. Purchased several used CIS parts on line and got scammed by a scumbag in Florida. Now in the middle of a fraud investigation. Bought more CIS parts from a fellow in CA who told me yesterday that the bank is holding my corporate check for 14 days (which is illegal). Called him last night and e-mailed him a copy of the cleared check (gotta love on-line banking). He offered to ship the parts today.
You can only imagine my frustration at this point. I wish to God I'd never taken that engine out of the car until after the dyno run. But who could imagine such a comedy of errors?
So to answer your question, God only knows and he's having a good chuckle right now.
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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 11-20-2009, 05:42 AM
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Brian i'm sorry to hear of your woes, but you're talking to someone who's 930 has spent more time without an engine than it has with one!! I know how it feels, only too well.... Just hurry up ok

Don't get me started on God, if only he was real i would give him a serious piece of my mind!
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Jonathan.
87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 11-20-2009, 05:51 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #26 (permalink)
 
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What was the cost differance?
Old 11-20-2009, 06:10 AM
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Crotchety Old Bastard
 
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Cost difference using thick wall T304 vs 321 is a couple hundred bucks or so on the finished product, about a 10% bump to use 321.

I was out in the shop until ~12:30 last night boxing headers for shipment at 7:30 this morning. I've got to build several mufflers and polish 2 sets of headers this weekend so the car will sit. Maybe I'll roll it around so the tires don't flat spot.
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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; 11-20-2009 at 08:32 AM..
Old 11-20-2009, 08:28 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #28 (permalink)
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Looks like we'll be getting dyno data from other people before you Brian! If anyone here is taking delivery of Brian's system, and all you are changing is the exhaust system (no new turbo etc), would you be kind enough to get a dyno run before you do the swap, and then do it again after. Probably an impossible ask, but data like that would be really cool to see....
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Jonathan.
87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 11-20-2009, 08:40 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #29 (permalink)
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Well Brian good feedback I am glad you posted that. I wonder how the N/A folks feel about it? that may make the possibilty for us to produce both 304 and 321 headers and still meet your price point
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Ben

Current project 73 914-6 Gt project rusteration 2.4
Reproduction 914-6 oil tanks, 1-5/8" 914-6 heat exchangers source call 2623647426 or email mbconsulting21 @gmail.com
Old 11-20-2009, 02:15 PM
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Wo ist die Rennstrecke?
 
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What is the price going to be?
Old 11-20-2009, 03:59 PM
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Crotchety Old Bastard
 
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Introductory price (in 321) was $2195. I'm looking at ways to keep it at that price and T304 was one of the options.
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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 11-20-2009, 08:09 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #32 (permalink)
Crotchety Old Bastard
 
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I had a spare moment today and took another quick stab at fixing my car. I was able to fix one last leaking injector. The engine still runs rough but now it runs so this is progress. I received an e-mail from the fellow in CA who sold me a Euro CIS and that is on the way.
I'm determined to get this car fixed and to the dyno. Just gotta juggle a few things ...
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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 11-21-2009, 08:07 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #33 (permalink)
Crotchety Old Bastard
 
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Polished a set today that are heading to Florida:




Here are the words that will remain on all the 930 headers, "made in USA" and "321". Those first 3 words are getting more scarce every day.
Thanks all for the input!

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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 11-22-2009, 02:12 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #34 (permalink)
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