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Registered
Join Date: Feb 2004
Location: LaGrange, NY
Posts: 1,279
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Backdating heat with SSI's on a Carrera??
I am looking to hook up the heat after my SSI install on the 87 Carrera. From the earlier Backdating Heat threads the pictures look like the engine tin is changed with the 930 part for heat ducting.
On the carrera the original hole to pass the hose through is in the tin on the backside of the motor..... and everyones pictures looks like the new hose routing is setup to pass through the drivers side tin. **** Big ?..... Does anyone have a picture of passengers side heat backdate with the original A/C?? .... I cant see how you can fit the ducting under the a/c housing with the backdate setup.
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Looking for 87-89 Silver Cab 911, black interior, must be low miles, near pristine, no accidents, well sorted. |
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11-25-2005, 05:51 PM
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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,967
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Do a search. There are several threads with this mentioned.
You have to either change out the sheetmetal to the old style or make a duct that used the old hole on the left side by the dizzy then use two pieces of ducting. I used aviation hose on part and metal on the other, to resist the heat from the muffler. Its doable but you need to be a bit crafty. JoeA
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2021 Subaru Legacy, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
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11-25-2005, 08:40 PM
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Registered
Join Date: Feb 2004
Location: LaGrange, NY
Posts: 1,279
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In all of my searches I cant find a backdated carrera with oem a/c.
Anyone have it? It needs to go from the alternator, under the a/c, through the pass side tin and straight down to the SSI.
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Looking for 87-89 Silver Cab 911, black interior, must be low miles, near pristine, no accidents, well sorted. |
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11-26-2005, 03:29 AM
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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,967
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Use the words "backdate heat" without the word Carrera and you will get 158 hits. Not sure how many or if any have A/C.
Some of the better threads are below: Why you should backdate your heat on a 3.2 Gratuitous pics of Carrera heater backdate... Heat Backdate tube length / options Backdating Heat, Footwell Blowers and Fresh Air Fan Heating blower re-routed, needed?
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2021 Subaru Legacy, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB Last edited by Joeaksa; 11-26-2005 at 04:01 AM.. |
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11-26-2005, 03:51 AM
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Registered
Join Date: Nov 2005
Location: Cincinnati
Posts: 189
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Guys what is SSI...sorry newbie question. I've seen reference to backdating and SSI and was curious.
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86' 911 Carerra |
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11-27-2005, 06:33 AM
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Registered Cruiser
Join Date: May 2004
Location: Pursuing Happiness
Posts: 3,892
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SSI = Stainless Steel Heat Exchangers
From our Host: "The SSI heat exhangers are based on the 1974 and earlier 911 exhaust design that was highly optimized for the Porsche 911 engine. 1975 brought about changes in the exhaust that severely limited the flow capacities of the engine, in order to make the engines pass stricter smog standards. The SSI 1974-style heat exchangers are a bolt-on replacement for all thermal reactor cars (1975-77). Using the SSI heat exchangers will make these engines run cooler, make 16 more horsepower (10%), and 28 ft-lb more torque at 3,000 RPM (26% improvement). In addition, the reduced heat from the SSIs will help the engines last much longer. 911SC engines can expect to see an addition of 30 ft-lb of additional torque at 3,000 RPM (increase of 24%). " Also, SSI's can be fitted to 84-89 Carrera (i have them) but you lose the stock cabin heat setup. So you have to retro fit to the earlier setup, hence the term "backdate."
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87' Carmine Red Carrera - Keeper 82' Silver SC - Sold 79' Gran Prix White SC - Sold 05' Black C2S - Daily driver I have never really completely understood anything. Last edited by jorian; 11-27-2005 at 06:52 AM.. |
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11-27-2005, 06:47 AM
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Registered
Join Date: Aug 2000
Location: Palm Beach, Florida, USA
Posts: 7,713
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Quote:
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MRM 1994 Carrera |
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11-27-2005, 07:01 AM
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Registered Cruiser
Join Date: May 2004
Location: Pursuing Happiness
Posts: 3,892
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MRM,
Your welcome. Glad I was able to help.
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87' Carmine Red Carrera - Keeper 82' Silver SC - Sold 79' Gran Prix White SC - Sold 05' Black C2S - Daily driver I have never really completely understood anything. |
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11-27-2005, 04:09 PM
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Cigars and 911's -- Smile
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Jorian - thanks again, I'm new and have never been able to accurately separate the words properly.
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[GruppeB # 978] 1978 911 SC ROW (Pure Euro, no DOT or EPA work done..) 1991 Toyota MR2 Turbo (3S-GTE 4Banger Rocket) 2001 Audi - A6 Quattro 4.2L-V8 (love the growl) 2014 Honda Odyssey for the soccer-team/accessories |
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11-27-2005, 05:07 PM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,497
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The OEM AC will fit, just a tight squeeze on the heater hose. Here are a couple of pics without the AC:
 
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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11-27-2005, 05:11 PM
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1978 Porsche 911SC 3.0
