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Header choice for HP 3.0
I am finished with my 3.0 SC rebuild and am now looking for an exhaust system. I think I would like headers as heat is not necessary here in Houston. My build is as follows:
Stock case w/ stock crank Re-sized SC rods with Raceware bolts 95mm Mahle cylinders w/Supertec studs 95mm JE pistons @ 10.5 : 1 Stock '78 SC heads w/ new guides, race springs, titanium retainers, twin plug GE 60 Cams w/ re-bushed & re-ground rockers Pressure fed tensioners w/ Supertec idlers 46mm Webers on PMO manifolds w/ PMO insulators BURN-BROS twin plug dizzy w/ MSD 6 AL & 2 MSD blaster coils with 15 volt inverter Stock 915 2100 pound Targa w/ chassis mods I would like it to sound good but not too-too loud. Mix of street and DE with limited track use. Mostly a weekend hot rod. Any suggestions? Lindy |
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03-05-2010, 11:42 AM
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1979 911 SC Silver 2002 996 race car 2005 Ford Excursion |
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03-05-2010, 11:48 AM
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Quote:
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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03-05-2010, 12:04 PM
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Join Date: May 2003
Posts: 3,346
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For your motor I'd recommend European Racing Headers or the headers from S-Car-GO. The Buckley headers are top notch but not the right ones for your motor. You need shorter primary tubes like on the headers I mention.
-Andy
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72 Carrera RS replica, Spec 911 racer |
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03-06-2010, 06:11 PM
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Sounds like a great engine! IMHO, SSIs are great...you get great headers and heat.
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74 Targa 3.0, 89 Carrera, 04 Cayenne Turbo http://www.pelicanparts.com/gallery/fintstone/ "The problem with socialism is that you eventually run out of other people's money" Some are born free. Some have freedom thrust upon them. Others simply surrender |
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03-06-2010, 06:13 PM
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Thanks for the help. I had SSI and sold them looking for a bigger primary. I'm going to go see Jim Buckley this week and see what he has to say. I had never heard of his headers before asking this question of what to use here. His stuff is very trick. I will be checking into the shorter primary theory and what European and S-CAR-GO have to offer. I'll keep you all posted as things move forward.
Lindy |
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03-08-2010, 05:48 AM
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Join Date: Aug 2004
Location: Mulholland Dr. SoCal
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MSDSinc. has these equal length and mitred collector headers (1.625" primaries) on sale this month at 30% discount. With a set of extensions you can go directly into any dual inlet muffler available. These are raw-steel, but there are several coating options from MSDS.
They are at MSDS Inc. -* HIGH QUALITY HIGH PERFORMANCE ACCESSORIES 
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Porsche builds the 21st century 9146 so easy...even a Cayman can do it ! |
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03-08-2010, 04:17 PM
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Crotchety Old Bastard
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I have these in 1.5" or 1.625", 321 stainless, equal length.
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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 |
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03-08-2010, 05:52 PM
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Grenade
Grenade
2015 
1976 Porsche Carrera 3.0
1995 Porsche 993 Carrera Coupe
1974 Porsche 911 3.0
Yellow 911
78 Porsche 911SC 3.0L, 3.3Turbo soon. 
