Karman built 1970 911T - engine number question

[mac73s]

using the Porsche 911 RED BOOK 1965 - 1999, it seems to decode engine number 6105412 as having been originally fit to a U.S. Sportomatic 1970 911T, but it is presently in a non-Sportomatic Karman built 1970 911T. If anyone has a definitive source other than the 'Red Book' in helping to confirm or deny what I found, I would appreciate feedback. Also, were the engines fitted to Sportomatic cars different, and how so? Thank you.

[Scott A]

I think you can email Porsche of America,
Give them your vin and engine number…then ask if they match.
They will either say yes or no.

If you are interested in that sort of thing.

[mac73s]

I think you can email Porsche of America,
Give them your vin and engine number…then ask if they match.
They will either say yes or no.

If you are interested in that sort of thing.

Thank you for the reply, but I am pretty confident that PCNA no longer provides such information along with the changes in their former Certificate of Authenticity program where now one has to bring a car in to undergo an inspection. Even that is fraught with errors as they essentially still won't confirm such numbers...all in the fear of being sued. Unless of course you have recent first-hand information where you have been able to obtain such from them?

[Scott A]

I emailed them in about 2018,
They wrote and said a few things they could and could not do.
They were willing to say yes or no to the numbers I provided.

[Jim Breazeale]

using the Porsche 911 RED BOOK 1965 - 1999, it seems to decode engine number 6105412 as having been originally fit to a U.S. Sportomatic 1970 911T, but it is presently in a non-Sportomatic Karman built 1970 911T. If anyone has a definitive source other than the 'Red Book' in helping to confirm or deny what I found, I would appreciate feedback. Also, were the engines fitted to Sportomatic cars different, and how so? Thank you.

You can not "decode" a 1970 Porsche engine number to tell whether it was a Sporto or a manual. All the number tells one is that it is a 6 cylinder motor (fairly obvious), a 911t and meant for the 1970 year model. The other 5 numbers are just the sequential numbers. You can look at the type number stamped into the case to tell whether it was meant for a sporto, and whether it was meant for the US or the ROW, though. I'm not a fan of the "Red Book".

Jim

[Jim Breazeale]

Type codes for 1970 911Ts
911/03 ROW Sequentioal numbers starting with 0001 (6100001)
911/06 with Sporto ROW
911/07 USA with sequential numbers starting with 5001 (6105001)
911/08 USA with Sporto

[davep]

Jim, I humbly submit that you are incorrect. Here is my serial table for 1970 showing the ranges for each type. 6105412 decodes to a 911/07 non-Sporto in the first serial range for North American engines.
Further it is possible for me to obtain information on cars from 1950 through 1980 that includes engine serial in most cases.
Dave

[teenchy]

911/08 6108001 6108374 911T North America Sportomatic

That tracks. I have 6108317.

[Jim Breazeale]

Jim, I humbly submit that you are incorrect. Here is my serial table for 1970 showing the ranges for each type. 6105412 decodes to a 911/07 non-Sporto in the first serial range for North American engines.
Further it is possible for me to obtain information on cars from 1950 through 1980 that includes engine serial in most cases.
Dave

Dave

You are, of course right. I just never put the sequential numbers in context, even though the numbers were right in front of me. Thanks. We’re never too old to learn. I think we can both agree that the Red Book”
is not the most reliable source of info.

[davep]

Jim, I am obsessed with getting things correct; the physicist side of me. Yes, the "Red Book" appears to provide a lot of disinformation; thus the reason I have never acquired one. I have also accumulated a lot of data over the last 50 years, and that adds some perspective and guidance. I am also learning new things every day, and I have a lot of friends here to correct me when I am wrong. Plus, I like the strange and unusual plus the odd errors we find so please feed them to me whenever you can. Any engines with build #'s are important (1964 through 1969).
Dave