Yes
 

Hello, I too am here, hoping to see it finish. It would also be nice to see it being sold. So Walter, can you wet our yearning with something of late? Please let the inventor know to please continue. We are looking forward :)
Walter, I have three questions for you. (1) How large of cylinder will the head fit? (2) Will the heads come heat treated and cryogenically tempered?(3) What price range will the set cost? Lastly it's been a while, when will the product be ready to sell?

Please don't take my questions the wrong way.

I don't mate, no worries, and of course your last question was to be expected from someone anyways. I fully understand.
I had to make the decision to have them printed, cast or billet machined. After everything has been taken into account, I will have them cast after all, even though initial costs will be very high. Even (forgetting the new mold making itself) just the casting itself x4 isn't exactly cheap (probably just a bit over the current billet T4 heads now) but with casting it will be slightly more easy to see if a few more could be made. Casting might also prove beneficial to cooling properties (surface roughness, material maybe) and definately stays more in caracter with the history of these, which are cast as well of course.

Apart from the heads themselves, 2 custom camshafts need to be made as well as 12 alu ratio roller rockers (yes, the cams will be roller cams, i.e with very effective profiles and fast opening and closing possiblities). Then the whole camshaft drive system needs to be made with enclosure and all, which is the only other thing you otherwise wouldn't need.

I have no idea what it will cost me yet (as I haven't even asked for quotes on the above items yet), so I have no idea yet what complete set-up cost will be. It is therefore first and foremost a hobby project. Only if the first test engine runs and runs well, I'll start thinking and calculating what it would cost others ;-). I am very determined though! As I'am doing this 'alone' these days so to speak, so I can therefore take decisions for the project faster, but I also need more help as I am no machinist nor CAD designer. Stupid motivation is however the only way to get this done I think.

The best way is to first and formost have everything made for the first engine. Lets just wait and see if it all works as we think it could and if the newly cast heads really flow over 300 cuft/min as engine analyser says it will.

I hope (and expect) to have new castings within a year, if the ancillaries (sp?) can be ready then as well, remains to be seen, but making the other parts doesn't seem smart before 4 actual heads are ready and finish-machined to take measurements from, so the other parts will fit.

As with regular type 4 heads, the head stud locations will determine the max bore. Same with the A-heads. There is plenty of meat for larger bore and also even for slightly bigger valves then the 2x36 intakes and 1x42 exhaust I plan to use in the first set on the 98 bore.

And yes, after casting, I think the modelling/casting company asked already if I wanted the heads to be heat treated afterwards, so yes that will no doubt be done as heads get hot, no matter how many fins you use ;-)

Thank you.

Wally will you be doing liners as well or will you make recommendations as to which liners we can purchase.

Not me, but the other guys had one set of alu-nikasil cylinders made, but I have already destroyed those LOL!
So, that won't happen again and I am using ordinary cylinders myself as well.
Basically every cylinder should work when used and installed properly.
I have gotten a cheap AA biral 98mm set for the first engine ;-)

Ok because i was thinking about deutz aircooled diesel liners with these heads.