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rickeolis 01-26-2004 12:43 PM

SSI's for 2.7'S' question-
From what I have read, if I simply buy a set of SSI's designed for a 1969 911T engine, they will simply bolt onto my newer 1975 2.7'S' engine?

I have no emission requirements and want a set of SSI's. What should I order?

vash 01-26-2004 12:51 PM

you need to look into the oil line differences. i think wayne covers the details in his web site.

rickeolis 01-26-2004 01:10 PM

Yeah, the P. Parts website claims 1978- on, for oil line differences, thanks-

Copied from Pelican:

"Oil Line Update: It is important to note that all cars with cross-over exhaust systems (all 1978-89 911SC and Carrera) require the replacement of two oil lines with two older-style ones when installing the SSI heat exchangers (or any 1974 and earlier exhaust). These lines are part numbers C-107-728-00 (cars with a front-mounted cooler) and C-107-729-10 (no front-mounted cooler) and C-107-739-10 and are available for purchase below."

vash 01-26-2004 01:18 PM

oh good! i was going to look, but i saw my boss coming so i had to minimize and punch up a graph or something. haha

Rouxzy 01-26-2004 01:20 PM

I put SSI's on my '77 which would be the same engine as your car and I think I remember that you can only use back as far as '74. The '73 and earlier take a different set. What I would do is contact SSI yourself and ask. They are a pretty good bunch of guys if you are asking about their products.

rickeolis 01-26-2004 09:03 PM

Glad I asked! I'll contact them and have them let me know about it, thanks!

Wayne 962 01-26-2004 09:08 PM

Here's the info:


rickeolis 01-27-2004 01:21 PM

Got it, thanks Wayne.
The first two models cover almost all the years without the needs for emissions, now I see it.
I'm building my order list-

RoninLB 01-27-2004 03:07 PM


Originally posted by rickeolis
I'm building my order list-
you may want to confirm the exhaust stud length that'll match the thin or thick SSI flange.

rickeolis 01-27-2004 05:34 PM

Thanks Ronin, that's exactly why I ran this post. I'm hoping for input from those that have done this to a 2.7-


catuck 01-27-2004 06:34 PM

Hey rickeolis,
Here's what you'll need:
ssi's with the thin flange - you have shorter studs than the later engines
oil line kit to re-locate oil line (if you have external cooler)
two - in muffler
new copper hex nuts
new allen nuts
oil line wrench or large adjustable
a 13mm(I think) socket w/ universal joint adapter
one 13mm offset wrench
one allen wrench - long to fit through access tunnels in exchangers
WD-40 or similar to soak studs
gunk or latex gloves

that's all I can think of. The conversion is well worth it. Have fun.

RoninLB 01-27-2004 06:45 PM


Originally posted by rickeolis
Thanks Ronin, that's exactly why I ran this post. I'm hoping for input from those that have done this to a 2.7-

my 2.7 had the long studs so I needed the thick flange SC SSI..
no problem.. I ordered a plug and gasket for the O2 bung from SSI.

Eventually I'll use the bung to hook up a smog maching for a$$ hole SUVs that tailgate, on purpose to break my balls.. when I'm in the right lane in dangerous territory. So don't be discouraged if you need thick flanges.

rickeolis 01-28-2004 08:53 AM

So, I see that some 2.7's have thick flanges, and some thin?

fintstone 01-28-2004 08:25 PM

I have '74 SSIs on my car. You can come by and look if you like. They were on my 2.7, but switched them to my new 3.0.

catuck 01-29-2004 05:12 AM


So, I see that some 2.7's have thick flanges, and some thin?
Most likely thin on your '75 engine. From my experience, the thicker flange SSI's also have extensions that "plug" into your exhaust ports. I believe the 2.7 has smaller exhaust ports than the 3.0 and the thick flange SSI's won't fit even if you replace the studs. If you buy the thin flange SSI's and realize your studs are too long, you could replace the studs. This is what I had to do on my 3.2 to get the SSI's from my 2.7 to fit.

Otto 01-29-2004 06:26 AM

Here are the parts you need:
911 211 021 60 Heat Exchanger Left Side Stainless Steel Carbureted and CIS

911 211 022 10 Heat Exchanger Right Side Stainless Steel

900 075 148 02 Bolts 10 x 32 (4)

999 084 002 02 Hex Nuts (4)

901 111 193 00 Gaskets (2)

900 028 008 02 Washers (2)

900 076 010 02 Hex Nuts (2)

901 111 195 00 Gasket (6)

900 076 025 02 Hex Nut (6)

999 085 001 02 Barrel Nuts (6)

901 211 193 00 Hearter Hose

901 211 194 02 Heater Hose

999 512 128 02 Clamp (4)

911 111 025 01 Muffler

901 111 151 04 Bracket

901 111 157 04 Clamp (2)

900 067 078 02 Bolt (2)

900 025 00702 Washer (2)

900 028 024 02 Washer (2)

900 076 025 hex nut (20)

911 107 739 10 Oil Line Engine (Pump) to Tank or Regulator

911 107 743 10 Front Oil Cooler Engine Pipe to Regulator


rickeolis 01-29-2004 07:46 AM

Thanks guys, I am going to go ahead and order the thin flange style today from Wayne and the boys.

Fintstone, I would love to see your car soon, I'll send you an e-mail.

Otto, nice web site! I hope I don't need everything on that list though, but we'll see, thanks.

I have an original early 2-in-1-out muffler, but I want to try one of those Stinger style setups to help save weight and increase flow.

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