Does anybody knows this casting mark???

[Olivier]

Hi!

I would like to find out which company was making cast components for Porsche.

I can find a circled "H" on some parts.

Any help very welcome.

Sorry if it has been already asked, but I dounf nothing...

Olivier.

[LongRanger]

Do you have a photograph?

Rick

[preS]

I think he refers to the H on the engine (alu) case, valve covers, etc.

Richard

[preS]

Is this not the Mahle symbol? DaveP?

Richard

[uai]

Is this not the Mahle symbol? DaveP?

Richard

Hi Richard Mahle looks like a capital "E" turned Clockwise 90 degree- so it ends as a kind of "M".
Cheers

Uli

[210bhp]

I asked this question a few years ago with no definitive answer forthcoming. I have the 'H' symbol on my 73 aluminium crankcases.

Regards
Mike

[davep]

Mahle cast the magnesium parts. We see the circle H on the aluminum parts. As Mike says we do not have a definitive answer yet.

[Olivier]

Is this not the Mahle symbol? DaveP?

Richard

Hi guys, thank you for the help.
THis is exactly that mark I'm talking about

I didn' knew this was a Male mark!???

Anybody for this one?

This looks more like a "M' no?

Thx

Olivier.

[davep]

Two threads in particular to check out:
http://www.early911sregistry.org/for...ine-case-stamp
http://www.early911sregistry.org/for...p-anyone-else)

Here is the H in a circle logo that we want to identify.
Here is the Mahle logo; it looks more like an E rotated 90º right resting on a 3 point crown.

[Olivier]

Maybe the begining of an answer:

http://en.wikipedia.org/wiki/Hirth

But, if Hirth had been already absorbed by Mahle group, why can we find 2 different marks on parts of the same era???

Olivier.