SSI exhaust and heating system

[troy356]

I have a 1985 Carrera coupe and I'd like to install the SSI headers and a Porsche Sport 2-1 muffler. We're having trouble attaching to the cars heating system. Is there a simple way to do this without having to backdate the car to pre-74? I'd rather not have to change so many things on my car. I'm not opposed to having ss metal adapters made to complete.

[theiceman]

what are you having trouble with ? pics of the exchangers you are using and your issues ?

[john walker's workshop]

carreras need the whole conversion. no room for that cross-pipe for air into the exchangers. buy a factory right side air duct, as the one pelican sells is clocked too high and won't fit under the carrera aluminum a/c bracket.

[jpnovak]

Backdating the heat is the best way. This way there are two parallel flows for heat unlike the 3.2 system which has a single input and cross-over system.

Why not backdate the heat? Cleans up the engine bay and gives great heat.

[troy356]

What do I need to do to backdate the heating system and what parts do I need to order?

[Arne2]

Not sure what parts are needed, but here's a picture of a Carrera with SSIs (not mine) to give ideas.

[Craig_D]

Backdate it and don't look back. You'll have a clean engine bay, and fantastic heat.

[troy356]

Thanks for all the advice. I've decided to backdate the heating and remove the A/C. I'll shelve all the parts and they can easily be re-installed if I need to at a later date. Troy

[Craig_D]

I backdated my heat, removed my A/C and also my cruise control, and the rear of the car lifted almost an inch at the rear wheel arches! Removing weight off of the tail of a 911 is always a good move.

[evan9eleven]

Why you should backdate your heat on a 3.2