What are the engine shroud colors?

Alright, couldn't find the answer to this in any of the books I looked in...what is the meaning of the color of the shroud on 911 engines? Anyone have a definitive list? I'm thinking red was "S" and yellow was "T". Here's the stumper...I've got what is supposed to be a Euro 2.4T, but it has a green shroud (???) and MFI (Euro T's were supposed to be carbureted, yes?). Plus I haven't driven it in 2 years, but when I did it sure felt like a lot more than 140hp. Of course that's purely subjective. Any help gladly welcomed!

I'm not too sure on the difinitive nature of this, but I have a US spec T with Mfi and YELLOW shroud. I believe the S had red in both countries. The green one sounds ok to me for a Euro T, and the MFI on yours may have been retro fitted?
Check the engine no's on the right hand lower side of the blower housing and report back!

Regarding 140 hp: I'll agree. It feels a lot more than that. A hell of a lot more. I think it's down to the useable nature of the torque curve, the car's relatively light weight....and of course that wonderful race bred MFI, which gives the engine beyond excellent response characteristics and makes it an awful lot of aural fun too!

T's seem to get a bagging here. I'm really not sure why though.....

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'72 911 TE

For the 2.4 engines, Yellow was the 'T' color code, Green was for the 'E' engines, and Red was for the 'S' engine, as always from '67.

To verify your 'E' engine, check the serial number and type code, stamped on the right side engine case, near the fan housing. The type code for a 2.4E was 911/52 for a manual trans version, and 911/62 for the sportomatic version. The extra power you felt was a 25 DIN hp boost over a 'T' ... and all 2.4E engine serial numbers were 62xyyyy, where x was 2 for '72 and 3 for '73 production, and the yyyy was the sequential build number.

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Warren Hall
1973 911S Targa

I am having a similar dilemma. I am looking at a 72 911E which has had a remanufactured engine installed a couple of years ago by an earlier owner and I am trying to identify it. The fan shroud has been painted red - has the #901 103 101 5R cast on the top and 652 0935 stamped on the flat vertical surface where the engine serial # is found. The heads say 911 104 306 0R and the cases 901 101 102 3R and 901 101 101 4R. What is it???

According to the 'spec book,' that engine left the factory as a carbureted '72 'TV' engine, where the 'V' means Vergaser, German for carburetor!!!

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Warren Hall
1973 911S Targa

[This message has been edited by Early_S_Man (edited 07-31-2000).]

Is this information based on the 652 0935 serial number and if so, this housing could have been bolted to the reman case engine. Are the heads & 2.4T? It does have Zenith carbs. Could this be a Eurpoean engine? Thanks in advance.

Yes, I decoded the engine serial number, based on the info on page 9 of the spec book, and, yes the 2.4 'TV' engines were for European and the rest of the world markets other than the USA!

One minor detail you might be interested in ... the cooling shrouds are NOT Painted! The resin for making the fiberglass was 'tinted' the appropriate color, so they were ready to use when curing was completed, eliminating the painting step of the manufacturing process, so, if the one in question is painted, it is NOT original!

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Warren Hall
1973 911S Targa

Warren, you amaze me!

I had no idea the fibreglass cooling shrouds were colour coded.

The one on my 1973 1/2 T is black, and I'd assumed that was how it left the factory.

I'm going to look very carefully at it and see if it has been painted at any stage in its life...

You lean something new every day.

Thanks again,

- roGER

Alright, I finally got out to the garage and did some more work on my engine disassembly. First of all, the engine type number has been mystifying me. It looks like 911/57, but then looks like someone took a chisel and hammered in a horizontal line mark at the base of the seven. It makes the "7" look like a crude "2" ... I guess it really is a 2, though because I finally decoded my engine number! My spec book corroborates my theory: engine number 6220279 is an E!

I found other corroborating evidence while I was out there:
-Green shroud (thanks for the replies!!)
-MFI pump type is 0408-126-014 ('72 E type)
-Cooling fins not rusty (as is seen on the iron type "T"..."E" is alloy.

So I think this solves my engine mystery! Thanks for all the input. Do I have anyone's original engine?? It sure doesn't belong to my Euro T. For that matter, I didn't know anyone was bringing in grey market cars of that era..thought it was popular with the 3.2 Carreras and the Turbos during the non-import years.

-d

OK, I've now seen no less than 3 1973 911T engines with CIS.

In each case the cooling shroud is BLACK, and not painted that colour.

- roGER

Since I posted the original 'set' of shroud colors, I recalled that the original 'normal' 911 engines of '65-'68 vintage had gray fiberglass shrouds, and found a note in the Andial catalog that confirmed my original posting, including both yellow and black for 'T'engines!

I still don't know for sure how the early carbureted 'T' engines were coded with their shroud color, but there is not much doubt that MFI 'T' engines used yellow, and CIS versions were black!

And, as a further historical note, the 1974 large advertising 911 brochure showed a CIS 2.7 engine with a green shroud and plain, pre-'74 sparkplug wires without the stainless braid!

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Warren Hall
1973 911S Targa