casting numbers , they must have had a way to go back and say cases from Dec 3 thru Dec 20 were defective , and know by a casting number or mark which ones they were....

The only reason there are date codes is Quality control ,

that did not put all those silly date code numbers on the parts to piss off the purist 30 years later !

Cheers djpateman

The aluminum cases had date codes, but it seems that few of the magnesium cases did; the casting dates I know of only break down by month. The problem with your QC theory is that the parts were cast and put in a bin; then removed from the bin (in roughly reverse order) and machined (engine cases getting the pairing #), then binned again; then removed from the bin and assembled into engines/transmissions, and binned again. Finally on the assembly line the engines and transmissions were selected at random from the bins. All the handling and all the binning makes a real mess of the original casting sequences. I can tell from the casting dates I have that the original sequences were lost very early on. I honestly do not think they were able to track a defective casting lot.

Engine Number
 

Hi, Just bought a 68 S which was, in the past given a turbo look with the flared arches! The too was replaced with an MFI. The engine serial # reads *4080692* Does this say something? Not sure if it's a 2.4s or a 2.7RS?

Thanks

Chris :confused:

901/02 6 117 68 911 s coupe/targa 4080001> ;)

4080692 is type 901/02 a 1968 911S engine for ROW cars. The 911S was not legal for sale in the USA during 1968. Depending on the VIN, the engine case may be original to the car. As to what is inside the engine, who knows. Tell me more about the car; privately if you wish. Just behind the engine serial is the type # and below that is the build #. Please let me know the build #. The engine case should be magnesium by the serial, only 11 from the change.

Thanks for the info guys :-)

???????????????????
 

Help, can't figure out what I have. From what I have researchhed,doesn't make sense. Please help.I got the Certificate of Authenticity.http://forums.pelicanparts.com/uploa...1384177706.jpg Ok ,the first two digits 11 list as a 911,the third digit 8 is the year 1968.the 4th digit is were I'm confused. From my research the 4th digit 5 lists it as a 911S targa.And the 5th digit lists the car as made by Karmann body shell.Now check out the engine numbers.The 911S Targa engine numbers in 1968 start with 408,and the 1968 911L engine numbers start with338.Look at my engine number,it starts with 328.Ok,I checked out the the 4th digit for the 911L Targa is 6.What in the hell. I do not have the original engine,thats why I trying to find out what engine numbers to put in my Targa.All my research shows the 911L Targa has the 4th digit as a 6. Is it a 901/03 or 901/14???????????????????????????

11850xxx is a 1968 911S Targa for the ROW market.
11855xxx is a 1968 911L Targa for the USA market.
11860xxx is a 1968 911L Targa for the ROW market.
There are no Karmann Targa's, and no 911S for the USA market in 1968.
There were only 2 engines for the USA market in 1968: 901/14 for manual trans and 901/17 for Sportomatic, you need the 901/14 in the 328xxxx series.
Your COA seems to be complete and correct.

Thank you.In one of the books ,they list the 5th digit number 5 as a Karmann body.

The book is wrong. 1968 is a very complicated year for VIN's.

I just have my vertical number, 907029. forgot to write down the other. It was originally in my 67 911 before it was replaced by a race engine afew years ago-been stored in a plastic bag ever since. Thanks for any info.

Well, you get back out there and get the build # then!
This is the earliest 901/05 I have record of, so the build # (stamped under the 901/05) is very important for my research. It will be in the 3800 range. This is the first engine that came with Webers beginning in Feb 1966; the serial range started with 907001 so this is the 29th of its type. Photos of the numbers would be most useful. Check for date codes under the pulley.

Thanks, I'll have the build number tomorrow.

Steve, your PM box is full.

cleared a few out. Will have engine numbers this afternoon

Ok, here they are 901/05 and 3865

Horizontal number as stated earlier is 907029

also, VIN is 308135

any idea if this is my original engine? Thanks

My 83SC with transplanted 3.2L has no ID#'s at all. The PO states it was a brand new replacement engine back when the car was molested by Road Pirates and left for dead. Based on certain parts and looks I am guessing 84-86 3.2L, but have no clue as to RoW or US spec? It came from California and has a cat. The cat simply proves it was smogged for the tough state it was in. Aside from casting numbers, I see nothing else!! Where to look?

Anyone?

Happy Thanksgiving!

Any thoughts? Thanks