55 replies to this topic

[frash da bucket]

Hi Dane,

Two of the members from my car club,both have 5/72 xu-1's,and the both have december 71 heads,its there original heads.

Cheers John.

[enderwigginau]

It's the mould number as mentioned previously, nothing more.

[enderwigginau]

I checked my H252 heads today ,one 11 H ,and one 12 H , and noticed the H looked a very little different , but the screw slots , at the H252 and
and the back set were cast at a different angle.

Um, yeah, they are the impression of screw heads......so they were screwed in differently.
You will notice if you get a bunch of heads from the same mould that each one will be marginally different from the others.
The youngest head from that mould will have more meat in it...........

The moulds and dies wore out over time, one of the reasons (apart from volume through-put) that you run multiple sets.

Grant..

[S pack]

I checked my H252 heads today ,one 11 H ,and one 12 H , and noticed the H looked a very little different , but the screw slots , at the H252 and
and the back set were cast at a different angle.

Um, yeah, they are the impression of screw heads......so they were screwed in differently.
You will notice if you get a bunch of heads from the same mould that each one will be marginally different from the others.
The youngest head from that mould will have more meat in it...........

The moulds and dies wore out over time, one of the reasons (apart from volume through-put) that you run multiple sets.

Grant..

^^^^^ , from info I have read in years gone by, the patterns (moulds) for sand casting parts are often made of timber so the action of compacting the sand around the pattern would be quite abrasive and quickly wear away at the timber and/or any protective coating that might have been applied.

[Kockum]

A 27F3 9H cylinder head with standard LJ XU1 inlet valves.

Most 27F3 heads had larger valves that would come in handy for a Sunday drive in October.




To the left of the '2' there appears to be a 'K' - Kenny who worked at the foundry

[Kockum]

Craig , that is funny .

I dangled a juicy scrub worm commenting on the 20F3 and 27F3 heads but did not get a bite - gone quiet just like the golden perch .

[Kockum]

Dane,

if I get time tomorrow I will strip the paint off the 'K' area to have a good look .

20F3 heads -

If any exist with inlet valves like mine they would be far and few between .

All these that I have seen were fitted to the 'chosen cars ' or had been removed from one .

The less said about a certain thread the better - the vast majority of people are totally fed up to the back teeth with it .

[frash da bucket]

+1

[Kockum]

I stripped the paint off the 'K' area today - Kenny is off the hook .

What appeared to be a 'K' is just how the casting came out - the more paint you apply to that area the more pronounced the 'K' becomes .

Bugger .

[Kockum]

Craig , that is funny .

I dangled a juicy scrub worm commenting on the 20F3 and 27F3 heads but did not get a bite - gone quiet just like the golden perch .

i read what you were saying in that thread,and that car and engine is precious,

Thanks Craig .

I have seen all the photos that you posted of your beautiful orange beast .

What could be better than driving ONE of the 'chosen cars ' on any sunday !

[crabba67]

Hi all, can anyone put up some lc xu1 head numbers cast number and number next to H.
cheers anthony

[crabba67]

thanks gong
cheers anthony

[56 Early]

I realise this a very old thread butI have a 2815843 G30 1H head.