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Apfelbeck head on flowbank (pic)
Posted: Sun Feb 15, 2004 1:12 am
by Wally
Hello,
Thought you guys would like the picture: Its an Apfelbeck head that Roberto is testing on the flow bench.
This is done to gain data in order to be able to design the right cam(s) for it.
I don't know absolute flowfigures yet.
The throttlebody you see is a Jenvey one.
Just a recap: Overhead cam, two intake valves, one exhaust valve, twin sparkplugs.
Greetings,
Walter
Posted: Sun Feb 15, 2004 10:51 am
by Paul Illick
That's a really beautiful thing.
Posted: Sun Feb 15, 2004 10:58 am
by MASSIVE TYPE IV
Sweet! Let us know how they flow!
Posted: Sun Feb 15, 2004 8:03 pm
by factman
whos making those heads this? man, a lot happens when you leave for a bit.
SAM
Posted: Sun Feb 15, 2004 10:36 pm
by Wally
Thanks Jake, Paul
Do any of you know the flow numbers of what top flowing type 4 heads make?
We obviously need to have some numbers to compare them to.
Sam, they were made by Ludwig Apfelbeck some 20 years ago. The man himself died 10 years ago.
Thanks,
Walter
Posted: Mon Feb 16, 2004 8:16 am
by Alpine
This might not help you much but here are some flow numbers for a ported 2.0L 914 head.
Posted: Mon Feb 16, 2004 9:21 am
by Bobby74
Thats a pretty good article Alpine!
Was this Apfelbec head for the Type 4 engine? I assume it was, pretty damn cool....
Posted: Mon Feb 16, 2004 11:18 am
by Dave_Darling
Oh, Alfred is now calling himself Alpine? Hmm...
--DD
Posted: Mon Feb 16, 2004 12:18 pm
by dstar5000
That red dyed exh port looks like a crack waiting to happen!
I'd LOVE to see a type IV head that would flow 200 @26.
Don
Posted: Mon Feb 16, 2004 12:20 pm
by MASSIVE TYPE IV
Just wait............ Thats all I have to say?
Posted: Mon Feb 16, 2004 1:52 pm
by Wally
Bobby74 wrote:Thats a pretty good article Alpine!
Was this Apfelbec head for the Type 4 engine? I assume it was, pretty damn cool....
Thanks for the numbers Alpine! great info!
Bobby, yes those pictured are for the type 4 head. Actually there is evidence that Apfelbeck also made casts for a two valve OHC type 1 heads, but have never seen one of those in the flesh.
Jake, I guess the game is on haha! Although I believe its not fair to compare OHC with pushrod operated heads.
Take care,
Walter
Posted: Mon Feb 16, 2004 2:02 pm
by MASSIVE TYPE IV
Nope, BUT Mine should make 200 out the exhaust port!
Posted: Mon Feb 16, 2004 2:06 pm
by Wally
Cool!
But be warned: Apfelbeck suggested that for race engines (those were Formula V days with 1600cc type 4's) two 39mm intakes and one 46mm exhaust vlaves should be used
Promises, promises.
Well, we all know sometimes you need some 'motivation' to move some items up your priority ladder LOL
Take care,
Walter
Posted: Mon Feb 16, 2004 2:13 pm
by MASSIVE TYPE IV
It can only go so fast... Most of it now is out of my hands and in "others" hands..
They'll do fine, but don't look for ANYTHING for a year..
Right now I'm concentrating on some cam/lifter stuff and still working on the TI DTM, about to start the 911 shroud upgrade too.
Posted: Mon Feb 16, 2004 3:41 pm
by Mark the canuck
Dave_Darling wrote:Oh, Alfred is now calling himself Alpine? Hmm...
--DD
What would make you think that Dave?
