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Posted by: Jeff Bowlsby Jan 2 2008, 06:40 PM

I am closing in on the hunt for decoding the engine tin codes again.

If you have an original 1975 914 with an original 1.8L or 2.0L engine, please tell me the following about your car:

*Engine size
*California or 49-state car? (from emission label)
*3-digit engine tin code

Please post photos of emission label above relay plate and engine tin code

Here is an example of the engine tin marking from another 914 for reference...

Muy bien gracias.


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Posted by: Marty Yeoman Jan 2 2008, 07:14 PM

Jeff,
My engine tin has been painted so many times those numbers are long gone.
Marty

Posted by: Cevan Jan 2 2008, 07:24 PM

Here is the engine tin (the driver's side piece):

Posted by: Cevan Jan 2 2008, 07:40 PM

This is from just above the relay board on the driver' side, right above where the oil cutouts would go for a 6 cylinder oil tank.

Posted by: Jeff Bowlsby Jan 3 2008, 08:32 AM

Thanks Chris, those are great. Your emissions label is missing, but do you know if the car is California or 49-state? Is their a windshield sticker that would tell you?

I was hoping some of the other 1.8L owners would jump in.

Posted by: davep Jan 4 2008, 09:01 AM

Posted by: Krimee Ariver Jan 4 2008, 09:40 AM

Jeff,
I have 3 late model 2.0's in my garage. They are all kind of buried, but I'll see if I can grab some numbers for you. I know one is a California car, but I have NO idea what the other two are from.
What do you think the numbers mean?

Posted by: Jeff Bowlsby Jan 4 2008, 10:20 AM

Well, we would like to know what they mean too, they are one of the last great mysteries of the 914...we *think* they may indicate an internal project number or a market-specific engine group number, but we need more data. Any help anyone can provide is VERY much appreciated.

PS Some of the 1975 cars have the emissions labels mounted to the fan housing, not in the usual spot on the chassis sidewall above the relay plate.


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Posted by: davep Jan 9 2008, 01:06 PM

Posted by: ConeDodger Jan 9 2008, 06:01 PM

Jeff,
I will edit this when I get the rest of the information you are asking for. My car was sold to me with the window sticker from the original sale and I am the second owner so I know this much:

914 2.0 liter
California car. (sold at Sierra Porsche Audi in Riverside) had the Cat and smog intact when I got it.
tin from original engine before 2270 is on the garage floor. I will get you the code tonight.

Posted by: Air_Cooled_Nut Jan 11 2008, 11:19 PM

Would they be http://www.vwtype3.org/owners.manual/features/t3mnos.txt like what VW used?

Posted by: SirAndy Jan 12 2008, 12:26 AM

the 914 (and porsche in general) used M-Codes as well. there's a comprehensive list of them out there somewhere. i'm guessing jeff has that list.

the codes on the engine tin are not part of the M-Code list for the 914 ...
Andy