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Registered
Join Date: Jul 2006
Location: Maple Ridge, BC
Posts: 484
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Heat Exchanger delete?? To do or not to do!!!
When I bought my 79 sc the heat was not working.
I have never really needed it accept for maybe once in the morning this fall. What do you all think about taking off the heat exchangers etc. i would obviously keep all the parts and probably make it into a refurb project one winter is my thought. What are the performance gains if I go to a straight exhaust set up? Any suggestions or thoughts?
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JOHN 79 EURO SC "24 Years Later - The Dream Came True" |
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11-18-2006, 06:58 PM
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Join Date: Nov 2004
Location: Raleigh, NC
Posts: 3,867
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I would get the heat operating.
Comes in handy when you need defrost. 
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John D. 82 911 SC Targa-Rosewood 2012 Golf TDI |
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11-19-2006, 04:11 AM
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go ssi heat exchangers and pick up 15-20 hp along with outstanding Heat..
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Ben 89 944,85.5 944 914-6 2.4s GT tribute. 914-6werkshop.com |
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11-19-2006, 04:13 AM
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Sports Purpose 911 Driver
Join Date: Mar 2002
Location: La Jolla, CA
Posts: 4,368
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I agree with Ben. Unless you are tracking the car and don't need and want max performance than SSI's are the way to go.Then you can get an M&K muffler.
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James Shira R Gruppe # 271 1972 911 Coupe 3.8 RS ‘nbr two’ 1972 911 Coupe 3.2 TwinPlug MFI 'Tangerina-Jolie' 1955 356 Pre A Coupe ‘old red’ 1956 356A Emory speedster build in progress |
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11-19-2006, 09:52 AM
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Quote:
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Ben 89 944,85.5 944 914-6 2.4s GT tribute. 914-6werkshop.com |
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11-19-2006, 10:06 AM
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Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,040
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the SSIs _are_ headers - they just have heat exchanger boxes wrapped around them
they are also stainless steel and will last longer than you or the car do there is thus no engine performance benefit to "headers" over SSIs headers will, however, reduce the wt. at the rear by about 16 lbs. -- that is worth something for a pure race care in a warm climate (are you planning on moving?) so, you almost certainly want SSIs
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off |
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11-19-2006, 10:25 AM
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Join Date: Jan 2004
Location: Chicago, IL
Posts: 415
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I just went the SSI/M&K route. The heat is AMAZING, the car pulls very strong, and the sound is delightful. You won't be sorry
Steve
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'82 911 SC |
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11-19-2006, 03:25 PM
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Join Date: Mar 1999
Location: Cornwall-on-Hudson, New York, USA
Posts: 4,499
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Heat? Who needs heat? Didn't any of you guys drive MG TCs in the old days? Oh, wait, probably not, since I'm into my seventh decade...
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Stephan Wilkinson '83 911SC Gold-Plated Porsche '04 replacement Boxster |
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11-19-2006, 04:08 PM
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Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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You live in BC, but you don't need heat? Oh, that's right - Canadians are really tough, and if Maple Ridge is by the Sound it's not really freeze the mucus in your nose cold so who cares?
Yes, your stock exhaust system is more restrictive than it needs to be for power (emissions are a different matter), and you can do better with headers. Bursch, for instance, in the 4-500$ US range. SSIs at over $1000. Look up SCargo headers for works of art and an even better design, but beaucoup bucks. If you can scare up a set of the header/heat exchangers off of a '74 (or earlier, for that matter), they are of the "proper" configuration as well - each exhausts toward the rear of the engine on its own side. The heat exchanger sheet metal on those sometimes rusts out (I just replaced a set with SSIs for that reason, being a Colorado mountain heat needing wimp), but the exhaust path is the same as the SSIs. Walt Fricke |
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11-20-2006, 04:35 PM
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