The Apfelbeck Project (Serious T4 engineering)

[Frank]

Hi everyone,

I found website on a type 4 engine project that will probably interest all of the T4 nuts on this forum. This is called the Apfelbeck Project, some engineers are planning on making a overhead cam type 4 engine. There is a lot of details about their project along with fully animated 3D pictures of their engine heads. Check this out!! They even planned 4 test engines that will be used in application such as street and autocross racing (4WD!).


http://www.apfelbeck.nl/

[Panelfantastic]

One of those gents posts on here often, they have been teasing us with that incredible stuff for a while now! Look for posts by Wesayso.
I for one, can not wait to see a video of the test mule up and running!

[Wally]

Well, I can tell you its teasing for ourselves as well. Not everything goes as fast as you would like it. Mostly since everything has first to be thought up and than literally made from scratch.

Wesayso has posted here before on the project indeed:
http://www.germanlook.com/Forums/sho...ight=apfelbeck

This is the basis of my non-plus-ultra engine where I hope that the Apfelbeck heads will get installed:


Thanks for your interest Frank.
Greetings,
Walter

[Frank]

Hi Walter,

Is there a Scat forged Crank in your project, if so nice!! .

Surfing the net and looking at the Apfelbeck project some things caught my eye and I quite don't understand why it's done that way. It seems that each cylinder is going to have his own cylinder head, my opinion is that it would be stronger having a cylinderhead for 2 cylinders like on conventionnal flat 4 volks engines and the camshaft would suffer less from vibrations due to the running engine. It also seems that there will be a camshaft for 2 cylinderheads, one section of the camshaft will be free (outside in between the cylinderheads)? How many bearing will be necessary for the camshaft, what about its lubrification? Finally the whole OHC assembly is run by a flatbelt, as said in the guest book, drag at the rear of the car lifts up dirt and flatbelts plus dirt equals early breaking flatbelt. It would probably be more comvenient using a chain drive system instead (such used in porsche engines). It would be more compact too.

I'm not sure of that but chain and sprocket assemblies in most cases have smaller mechanical service factors than pulleys and belts.


Anyway, they are still in the early developping stages of their heads (based on a 70's design), they will probably encounter many design changes in their way

[Wally]

Hi Frank,
Yes, thats a 86mm Scat billet crank.
About the seperate heads: Look at the porsches you mention: all 911 engines have individual heads. Look at the Scat split-port heads: also an individual head per cylinder.
All design choices have been made very conciously and all pro and cons were taken into account. Trust me on this one. Don't worry about it. It will be awesome

Best regards,
Walter

[Frank]

Thats cool, didn't know that porsche had split cylinderheads!

[effvee]

Well by looking at the site, they have a actual head and carb body for injection. Before I allow my mouth to drull I'd like to know the price, does anyone know of a price yet????????????

[Wally]

We will have to be patient for still quite a while I'am afraid. But imho, its fun enough to see and follow the developments of the project.

The intake manifold you see is just a temporary one which was used for flow bank testing. The throttle body is a Jenvey one with IDF bolt pattern, but the actual test engine may be outfitted with a different set. We are still in test fitting stage right now.
One of these days a mock-up of the actual test engine with three heads and the full distribution will be trial fitted in a bug engine bay to see if everything runs freely.

Best regards,
Walter

[Blue Thunder]

Great stuff guys, really an inspiration!

Hopefully it can give that extra push into the reliable 100hp/liter range on a naturally aspirated engine.
Makes me wonder even more what it would do with a turbo on it :idea:
If you would like to make a 'blown' experimental engine at the time, please give me a call

Great project!

Grtz. Robin

[Wesayso]

Good to see we can be found "in the wild"

I just finished putting up a few new photos Roberto shot of the Distribution...



www.apfelbeck.nl

And: Yes, that strap is temporary and so are the cylinders by the way...

[Wesayso]

What's behind door number one ....



www.apfelbeck.nl

[DORIGTT]

These people are really starting to #!$$ me off in a major way

Why do they leave us in the dark for so long about which of our firstborn we have to sacrafice to the gods of ACVW's?

Have we asked to be tortured in this manner by loving the cars we do? I think not.

Please...I beg of you...stop this madness and I'll allow you to use me and my Ghia as a test dummy for open track events and time trials for durability and reliability. Heck, I'll even do some Silver State Classic stuff to show the engine's ability for sustained high rpm usage.

Just please don't make us wait much longer...

[Wally]

Haha, that was very funny :agree: Thanks man.
We are going as fast as we can without losing our girlfriends
Don't worry, we will keep you posted.
Best regards,
Walter

[DORIGTT]

Any projected figures? I'm going to sell my tractor for a set of those heads..

[mikko k]

Here is an other style Scat Crank from my engine. And Pauter Super Pro heads. Sorry, no over head cams.