Billet heads

[-Alex77-]

It depends, but most of the time stock pauter rockers+shafts can handle most loads. Pauter shafts are quite sturdy, dont know about the cheap rocker kits...

You can adapt 5-bolt arrangement like JPM rockers, but you dont need them if you have light valvetrain.
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Lasercut parts and CAD design

[-Alex77-]

I think you only need 5-bolt assembly if you are running K800 and heavier springs.

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Lasercut parts and CAD design

[mark tucker]

I would rather have the 5 bolt.

[-Alex77-]

Heads will have 5 bolt arrangement, no problem. But you have to make your own blocks or buy JPM rockers. I can later design blocks for pauter 1.4 rockers.
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Lasercut parts and CAD design

[-Alex77-]

Noticed thing: JPM 5 bolt rockers dont fit, atleast if i design with same bolt pattern them, at JPM heads intake and exhaust are probably 43-44mm apart from each other.


My heads the valves are 46mm apart from each other, so custom shafts and blocks are needed, i am designing them at now, also stud pattern may differ littlebit at left end.



-Alex
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Lasercut parts and CAD design

[-Alex77-]

There is green light now, maybe even this year the prototype is made. First we make probably just the 94mm model with small ports and CB supergrip valvestuff is used.

I am also desinging rocker covers, like CSP style.

Important question, how much can be pushrod tube holes relocated?
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Lasercut parts and CAD design

[-Alex77-]

Possibly we get first head pair out of oven at next month, for the test engine.

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[mark tucker]

dont forget oilers in the valve covers. why not also a canted valve version??(over grown 356/912 type)could also cant/angle the intake valve a bit too.making canted rocker satnds&shafts isant that hard either. but a diffeent valve cover may be needed. keep up the great work & getter done!!!

[-Alex77-]

All the custom stuff later, just now the basic version, 94/101.6 bore etc

Probably the "easiest" custom versions would be with different port sizes, 6-stud holes, different style&size chambers, dual plugs etc
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[mark tucker]

I would think this is custom.....but yes I understand the reasoning.just dont understand redoing with out realy redoing a old desigine execpt for making there over there and better for cooling but not realy much diferent .just get them done and start the real updated all new desigine for killer performance. oh so much more can be done with modern technoligy.keep the good work coming we all enjoy seeing it, even if we can no longer afford it(unless we make it our selves)

[-Alex77-]

Unfortunately there has been some delay, but the heads will be made. I'v done minor changes to the head 3D model. Very eager too see how first pair of head will assemble & work at test engine. I havent yet tried the solidworks flowXpress allthough..


http://cal-look.no/lounge/index.php/topic,22351.0.html
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[Boolean]

Please keep us informed! If You'll be at either of the Bug Runs in Sweden, maybe we can have a chat!
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I strive for perfection. Excellence will not be tolerated!
Build thread here:
http://www.thesamba.com/vw/forum/viewtopic.php?t=529379

[-Alex77-]

Yes, i will keep you all informed This week before midsummer festival (bright as a day at night here), i will call to the machine shop. I have allready told to the machineshop owner that there is really some interest.

Did some quick flowtest to the newest port model, allthough i havent tried Solidworks FlowSimulation yet, which should give more precise results:

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[FreeBug]

Hats off tou you, sirs! Inspired work!

I have to wonder, however, why keep the stock valve inclination? Does it help in flow bias? I can't see that being so...

Our vw engines are particularly handicapped by the overall angle the intake has to flow, over 90º.

The porsche 356 has a horizontal intake, which lessens the blow by 9º, but they still use carbs, which have to be horizontal... throttle bodies could be set at the angle of the manifold air flow...

If the 356 can live with the oil-control issues of a horizontal intake, so could a hi-po vw, and I'm pretty sure the valve geometry issues could be solved with appropriately designed rockers.

This may be more of a hassle than it's worth in a design held back by pushrod technology, but I still wonder why nobody sems to care about this...or maybe I'm completely wrong...but I do know it's desirable to keep the angle between the valve and the airflow as low as possible, within limits. But vw packaging...eh,...

[-Alex77-]

Unfortunately i havent got any contact to the manufacturer at this summer. But i wait at least one month before making new calls.
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[-Alex77-]

Might get 92/94/101.6 bore heads with different ports sizes from other manufacturer. Also can do flowtest with different valves.

Price for two pair heads would 2350€, and for four pair of heads 2150€. At this point i dont yet earn any money and i have to pay taxes too =)

But the price for heads will drop eventually.

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[Anvil]

After having a rocker shaft separate from a head this weekend due to a failed stud, I'd go with the 5-bolt. Less than 250-miles on this all new assembly.

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[-Alex77-]

Yes, 5-stud option like JPM is quite easy to do and included are 5 threaded holes.
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[mark tucker]

I think bringing the intake ports togeather with only about 3mm between themat the intake flange so the port aims more toward the valve and center of the cylinder may flow better and make more power. but like I said befor keep up the great work.

[modok]

yeah I told him but he doesn't listen