Stock '79 SC Monty Muffler and SSI Upgrade (pics)

[Coach House 911]

After reading quite a bit about this upgrade I summed up the courage to do this on my own but still need some parts and have a few questions.

This is what I have so far:

SSI Heat Exchangers -Thin Flange
Monty Muffler -2 into 1
Exhaust gaskets: 2 copper 6 metal
6 Nuts -Using existing-look like copper on there now soaked with WD40)
6 Studs (Using existing now soaked with WD40)

Stuff I need:
Oil Lines -what kind?
Special tool for studs.
13 millimeter socket for the nuts

Any other tricks I would appreciate as well. Wondering if I can remove the existing system all in one piece?
Thanks in advance,
Mike
Thought I would document this job for others but also for assistance as I am a total ROOKIE.

[911mnypt]

PB blaster is your friend...soak the exhaust nuts as much as you can. The last thing you want is to snap one of those studs.

[Targa Time]

Do yourself a favor and buy a product called Sea Foam Deep Creep. Most times you will break a couple of studs removing the exhaust, and WD 40 won't do the trick. When I removed mine I soaked the nuts and studs and then tapped them with a hammer. I don't know why but the tapping somehow assist in the process. Let it set for 24hrs then soak them again. Set for another 24 then remove. i didn't break a single stud and thats after not being moved for 30 yrs.

You can get a long allen wrench provided by our host for the barrel nuts.

You can take it down in one piece but why bother? It just add one more complication to the job.

[porsche930dude]

pb blaster and a little bit of heat goes a long way . get it nice and hot with a propane torch or map gas.

[Tigerrat]

If the PB Blaster and Mapp gas don't do it, have the Dremel handy. As tedious as that might be it is vastly superior to dealing with a broken stud. No reason to complicate things by trying to remove in one piece. Ken

[boyt911sc]

Mike,

You would need these oil lines for your SSI installation.


Tony

[Coach House 911]

PB Blaster and oil lines on the way...Thanks!
http://forums.pelicanparts.com/uploads18/PB1299970988.jpg

[Coach House 911]

Originally Posted by Targa Time

Do yourself a favor and buy a product called Sea Foam Deep Creep. Most times you will break a couple of studs removing the exhaust, and WD 40 won't do the trick. When I removed mine I soaked the nuts and studs and then tapped them with a hammer. I don't know why but the tapping somehow assist in the process. Let it set for 24hrs then soak them again. Set for another 24 then remove. i didn't break a single stud and thats after not being moved for 30 yrs.

You can get a long allen wrench provided by our host for the barrel nuts.

You can take it down in one piece but why bother? It just add one more complication to the job.

I thought by taking it down/off all in one piece would be easier... is there a better way?

Thanks,
Mike

[billybek]

I have the same project to do and already have SSIs and the muffler so I am interested to see how your install goes.
One thing I am curious about is if anyone has used Elephant Racing's conversion oil line that goes over the top instead of underneath the engine?
If I end up selling the car one day, it would be nice to be able to install the original equipment without having to screw around with the oil lines again.
Subscribed.

[Coach House 911]

Bill,

I would be interested in hearing about the oil line conversion possibilities as well. Seems like that would my preference if feasible.

-Might not be a bad idea to start a new thread to see what feedback is out there?

Mike

[AZAirCooled]

Mike,
I'm a 911 rookie and getting ready to do the same job for the first time. Check out the Early Heat Exchanger Retrofit article in the Tech Articles posted by our host in the left column of the Porsche Catalog. It has a lot of detailed instructions, lists tools, and materials needed. After reading that and talking to a couple of mechanics, it sounds like our biggest challenges are removing the existing HE's without breaking a stud (very bad) and removing the existing oil lines(major biach). I plan to follow the the above tech article techniques to avoid breaking a stud and cutting off oil line nuts to avoid breaking my temper.

I couldn't find the long 8mm allen socket locally and ended up ordering it from our host. I hope to do mine this week.
Bob

[Coach House 911]

Bob,
Thanks for directing me to the fantastic heat exchanger step by step process -that is exactly what I was hoping for.

The more I use this forum the more I realize how awesome it is for someone like me who has very little mechanical knowledge/experience.

Good luck with your job and hope to see your progress!

Mike

[WIL84911]

Sure you can take it down in one piece (why bother with the other rusted bolts). Might as well order new barrel & exhaust nuts.

[rhogg]

I just removed these pieces yesterday Leave Exhaust Studs & SSIs

In my case I soaked with PB blaster every night for a week. 8/12 came out with just this, then a couple of heat cycles, more penetrating oil, followed by three nuts put on the stud with the impact driver and then I was able to back the studs out. Though you can see in the post I attached removing the studs doesn't seem to be necessary.

For the nuts connecting the HE to the exhaust I cut off 3 of 6 with the other 3 coming off with heat. The cross over pipe, cat and muffler came off as one piece.