floflodr

i just bought this 1975 911, but there is no serial on the engine where it is supposed to be, is there another location to find the serial ?

supposedly it is a 2.7 is there any way to find out what exactly it is ?

any reason why it doesnt have the engine serial ?

theiceman

because its stolen and obviously been filed off ?

theiceman

any other pics of he engine so some guys might be able to hazard a guess ?

Amber Gramps

Any chance it's an early factory replacement engine where the dealer is supposed to assign it a number?

I'm also thinking its a stolen engine or a motormeister fast one...

Mark Salvetti

I don't know, the surface where the serial number should be doesn't appear to have any material ground off. Maybe it is a replacement case, which could be bought from Porsche without any serial numbers. I've seen other photos online that look like this.

Is there an engine type number on it? There is a flat surface just out of view near the bottom of your first photo. On a 75, the type should be 911/4X, where the X digit varies depending on the whether it is a US car, a 911S, a Sportomatic, etc.

Mark

gt-2

High probability this is a factory replacement engine.....the cases weren't stamped with a number on replacement engines.

theiceman

you guys really think so ? looks to me quite obvious where the surface where the s/n goes is different to the rest.

gt-2

My bad, forget what I said....I didn't look at picture close enough. Definitely machined off numbers and not a clean job so someone wanted engine number to disappear for not good reasons

floflodr

could also be from a screwdriver removing the paint to see if there is a serial, looks more two screwdriver scratches

floflodr

just looked at other engines and these numbers are very deep, this doesnt look like someone took of 2 or 3 cm...

Mark Salvetti

That's what I was thinking. It also looks a lot like this blank case photo from an old Grady Clay post on Pelican:



Still wondering if there is an engine type number on the horizontal surface (where the red arrow is pointing). If there isn't, then I would think it supports this being a factory blank case.

Mark

floflodr

i have been looking at your picture before and thats why i came to the conclusion, it looks exactly the same...

GTgears

Looks to me like an unmarked factory replacement case that some jack **** spray painted silver. And then someone scraped off the silver paint trying to find a serial number.

floflodr

any way to tell what exact engine it is without serial ?

can someone please confirm it is a 2.7 or how could i tell ?

theiceman

Bottom line is with a worked on engine you simply can not tell, the only way is to examine pistons and cylinders. Im pretty sure they need to be measured and therefor off the car.

BTW you only need to take a coiple of MM not s/n. And its easy to add in some aluminum and grind it down. I think that grady clay pic has had aluminum added, you can see where it was added. Anyhow means nothing.

Steve Weiner might know some tricks to figure out displacement.