LTR,
An acquaintance of mine has a complete 'AY' engine sitting on a trolley in his garage:







Note the 8 spark plug wires, and the angled distributor drive take-off. This engine consists of a lot more than just a cylinder head casting.......

If you need to conform to FIA homologation specs for your car then you will need to follow the homologated specs for the distributor drive too - which will be tricky to engineer if you do not have enough data / samples to reverse-engineer from.

You might even find that it is more cost-effective to buy a complete head kit / engine from Japan rather than making your own. Such things are available if you know the right people to approach and you have deep enough pockets.

And at least you would then have the real thing too, wouldn't you? You could consider it as an investment.

Good luck,
Alan T.

From what museum that photo is?

At least until now the mseums here have been real help when tracking some people and parts down.

I'm sure that if you call or go to visit if it's near enough they'll let you look under bonnet by request. And take some(million) pictures if there lies something that many of us are in intrest..

Is that a coupe E10 by the way?

I wonder if this car has the "crossflow" head.

mmm just thinking a way to clear the brake cylinder and its ................ TURBOOOOOOOO

The floor of the exhaustport is allso higher so the turn is not so tight and that helps flow allso.

The exhaustside is round and size 33mm.
The inlet is allso round and size 38mm.

The valvesizes are a little bit of mystery but when I get the head i can measure the valveseats, that goin to tell something.

Unless I miss my guess, this picture, from an earlier post in this thread, shows the exhaust side as I am sure I can see the spark plug holes.

The exhaust ports on a regular A series head are square, so no, I do not think a regular manifold will fit, & since this was a
dedicated, balls to the wall, competition head, I don't think that there was ever any thought given to fitting one.

Would be a great setup for a LHDrive car. Certainly solves brake-master clearance etc.
Is the exhaust port layout the same as a standard round port A12 head? Could you use an excisting set of extracters/headers?
What's 'the midsummerparty'? I'll bet you have long summer days in June/July like we do in Canada.

On the net i have seen one black and white photo this head fitted to E10 race car. Think the same photo has popped up somewhere here allso?

This one:




The car in the avatar photo is my E10 rallycar, known as Datsun 100A here year -77 and that car has never been crashed. Father bought it as new and I decided to give it something back as it teached me to drive once.

The car is in basic silver color in the picture at february's testing day after driveshaft break.

Here is few bigger ones:
And first pictures airbox was made in a hurry with no tools.. just explaining
















But this is enough of oftopic.

I meant to post this in the upper section first but somehow got it to pop out here. Maybe it should be dropped under main forum?

Any photos of An E10 with this head fitted to it?? Great looking car in your avatar LTR.

I'm going to make the pushrod system and rocker cover also yes.

Titanium would be the best but as it's not allowed by FIA and the class I drive my datsun we'll need to be satisfied with CrMo. If someone insists me making titanium followers, pushrod's and the whole system without valves it can be done by special order.

But first things first. Now it's time to firstly build the head.

The valves etc. standard head machining can everyone do on local engine repair shop so I think we'll try to keep the head's price somehow reasonable by making it so bulk as we can.