BTW, I think those are ADV performance parts. Case is custom casting and heads probably too iirc. Its mostly 911 sized stud spacing, which is a pity as those cases will be limited to 2,5 ltr IIRC.
Very nice and cool parts tho. Hope the two center/inner exhaust valves don't heat up too much in that location. Porsche didn't dare do that iirc...
Hosted them on our local vdub site:
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi in a streetlegal 1303
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
Thanks for posting those pictures for me, I fooled around for a little over 30 minutes with them and they did not work. And I thought the four valves with 2 plugs was a little odd.
Right click on the pic and copy that info and put THAT between the
[img]somethingoranother.JPG[/img]
JPGs are images, HTMs are webpages.....
Don
"Let me say it as simply as I can: transparency and the rule of law will be the touchstones
of this presidency,".. Barack Obama January 21, 2009, 30 minutes before he signed the law
sealing all his personal information....
IIRC Pelican disables "deep" linking of images on at least part of their site, might not work, we'll have to follow the links.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
Actually, seeing this pic again with these widely spaced plug locations, I do recognise those heads: In Bruce Andrsons book there is a pic of those as well: they were called 'Advantec' 4-valve aircooled 911 heads.
I know of one owner who had those on a 911 engine and suffered cracks between the exhaust seats with them. Hope they do better on a 4-cylinder.
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi in a streetlegal 1303
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
Frallen or Bobtail if you can I am looking for a picture of finished camshafts. I am attempting to figure out the lobe orientation when I pin them back together ( yes I am going to attempt the pinning tonight )
I could get you a picture next week when I am back in Sweden.
But seriously, your approach is probably good in some way but I think you need some good degree wheels and indexing to get the timing right?
Or how are you thinking?
I did ask Bobtail/Russ if there was anyway to share some pictures how they indexed/pinned their solution.
Probably no pictures available and now it is a new owner of the engine.
As for the 4 valve heads, I think it all looks nice but why not have a centrally located plug? That is one of the really nice possibilities with a 4 valve head. Shallow angel, central location of plug, large valve area.
Two plugs, good idea ...but?
Now I also recall some old time BMW engines. Was it Formula 2? They had three plugs and 4 valves.
Now I also recall some old time BMW engines. Was it Formula 2? They had three plugs and 4 valves.
BMW had a formula 2 engine in the late 1960s with radially disposed valves and ports with alternating inlet and exhaust. ie there were exhausts on both sides of the 4 cylinder engine and the inlets were not parallell to each other which must have made for an interesting cam design..
The heads were designed by Apfelbeck.
I saw the works March BMW team race at Mallory Park about 1970 and they had then reverted to a more conventional layout.
Very good Mike!
That was indeed one of the unique Apfelbeck cylinderhead designs. The opposing valves 'radially orientated' was his. There are pictures of those in his book, as are the type 4 OHC 3-valve, 2-plug heads
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi in a streetlegal 1303
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
Wally wrote:Very good Mike!
That was indeed one of the unique Apfelbeck cylinderhead designs. The opposing valves 'radially orientated' was his. There are pictures of those in his book, as are the type 4 OHC 3-valve, 2-plug heads
Wally where can i get the apfelbeck cylinder head book to buy.
