Puzzling markings on the heads.

[mole42]

Hi,

My heads are off and as I'm working on them I notice various markings on the heads:

Exhaust face marking.JPG

Inlet face marking.JPG

RHS inlet face.JPG

Top face marking.JPG

If anyone has any clues about the origin or meaning, I'd be pleased!

Richard

[Goldstar]

Don’t know for sure but when my dad worked at GKN in the 60s and 70s he was required to stamp all his workpieces with his own.number for QC. Could be the same?

[022Dave]

Try Peter Robinson, the Club Registrar. He's got lots of manufacturing information, and it makes him feel important!

Dave

[DJT]

Don’t know for sure but when my dad worked at GKN in the 60s and 70s he was required to stamp all his workpieces with his own.number for QC. Could be the same?

Now I know you’re taking the p***! QC at BL? You’re having a laugh!

[Motorsport Micky]

Now I know you’re taking the p***! QC at BL? You’re having a laugh!

Not when they were sat around watching the tealeaves flow around the head thinking that showed a reliable flow trace...gits lol.

Micky

[Goldstar]

Now I know you’re taking the p***! QC at BL? You’re having a laugh!

Fair point, dad mostly worked on Jag stuff

[tonyh]

When Hart Racing Services moved to Fulham in 1978 I had an engine shop producing a vast amount of reconditioned full engines, heads and short motors, the J355 number is one of those heads, we had a book with all reconditioned parts were numbered and details of who built it and what was done, unfortunately I no longer have the book, the heads were stamped below the center head stud and blocks were stamped behind the distributor in front of the core plug. If you let me have the registration number I can probably tell you when it was fitted and what we did to the Stag.

Tony.
img044.jpg

[dasadrew]

Try Peter Robinson, the Club Registrar. He's got lots of manufacturing information, and it makes him feel important!

Dave

Not a particularly nice comment about someone who devotes an enormous amount of time and effort to collect, maintain, archive and publish all the historical information about the Stag. I think if Peter were doing that to "feel important" then he would be on every thread here. As it is, he's just one of the many unsung champions working quietly in the background.

Drew

[mole42]

Well said Drew. I was trying to think of a polite way to say just that.

Richard

[mole42]

Here are two more numbers, first the other head (J356):

other head marks.JPG

And this is the number on the block:

block number.JPG

I can't decide if that is 782 or 7827....

Richard

[022Dave]

Not a particularly nice comment about someone who devotes an enormous amount of time and effort to collect, maintain, archive and publish all the historical information about the Stag. I think if Peter were doing that to "feel important" then he would be on every thread here. As it is, he's just one of the many unsung champions working quietly in the background.

Drew

Drew,

Peter & I have known each other for many years when I served on the National Committee, and my comment was said tongue in cheek. I too was one of the unsung champions for over 15 years.

Dave

[dasadrew]

Hi Dave,

I appreciate your response and I find it praisworthy that you were also once in the National Committee keeping the club alive; it's just that humourous irony for "those in the know" works great when you're in a group with "those in the know" in a pub etc. I'm also guilty as accused of that!

However, on a worldwide public forum where certainly not everyone is "in the know" it's sometimes not the best tool in the box. (as amply demonstrated here!)

Drew

[tonyh]

Here are two more numbers, first the other head (J356):

other head marks.JPG

And this is the number on the block:

block number.JPG

I can't decide if that is 782 or 7827....

Richard

The number on the block would be 782, I know I reconditioned a lot of engines but not 7,000 of them.

Tony.

[CJG]

The number on the block would be 782, I know I reconditioned a lot of engines but not 7,000 of them.

Tony.

Looks like a possible 78270 to me Richard.