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> Anyone tried an aircooled Flat 8, With two fours?
jwalters
post Jan 31 2005, 02:47 PM
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Wonder how the T4 would respond with a crank that has throws at 90 degrees at each other--instead of the 180 degree config---this and change the firing order to reflect a burn event on one side of the engine at a time--like : 1, 3, 2, 4

Instead of one side-followed by two same side, then last one side again---: 1, 4, 3, 2---

There would have to be a radically ground cam for this--


Ala Ducati--if the Duc had four cylinders.......
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bondo
post Jan 31 2005, 02:50 PM
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QUOTE (jwalters @ Jan 31 2005, 01:47 PM)
Wonder how the T4 would respond with a crank that has throws at 90 degrees at each other--instead of the 180 degree config---this and change the firing order to reflect a burn event on one side of the engine at a time--like : 1, 3, 2, 4

Instead of one side-followed by two same side, then last one side again---: 1, 4, 3, 2---

There would have to be a radically ground cam for this--


Ala Ducati--if the Duc had four cylinders.......

I don't think you could grind a cam THAT radically, as 2 lifters are riding on each lobe, one for each side of the engine. By design it has to be 180 degrees apart.
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r_towle
post Jan 31 2005, 05:28 PM
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yes, but what if you welded up the two motors to be in the 90 degree position???

That is what I was thinking....

Rich
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DuckRyder
post Jan 31 2005, 05:45 PM
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QUOTE (jwalters @ Jan 31 2005, 04:47 PM)
Ala Ducati--if the Duc had four cylinders.......

Trying to make a desmo valve system work without overhead cams would be ... probably impossible.

Once you've adjusted the valves on one, you won't ever try to convert something TO Desmo.

And there is a 4 cylinder Ducati, the DesmoDeci (vs DesmoDue)

(IMG:http://www.ducati.com/docs_eng/photogalleries2//040204drmgp/images/05_b.jpg)

(IMG:http://www.ducati.com/docs_eng/photogalleries2//040204drmgp/images/15_b.jpg)

DuckRyder (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
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jwalters
post Jan 31 2005, 05:52 PM
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Very nice pic of a Duc!!! I am spanking to it right now----always wanted one--900SS super light was the one that I lusted for--

I did not mean use the valvetrain--no--I was thinking of the inherent smoothness of a 90 crank--but because the cylinders are still 180 deg. the extra two throws would balance out like it was a 90 deg. crank in a 90 deg. cylinder layout-

And yes-those cam lobes would have to be whittled down in width quite a bit--but it could be done......
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DuckRyder
post Jan 31 2005, 05:56 PM
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QUOTE (jwalters @ Jan 31 2005, 07:52 PM)
Very nice pic of a Duc!!! I am spanking to it right now----always wanted one--900SS super light was the one that I lusted for--

God, I wish I had never sold my 96 900 SuperSport SP! (IMG:http://www.914world.com/bbs2/html/emoticons/wub.gif)

Back to your regularly sceduled thread... (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
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JmuRiz
post Jan 31 2005, 11:06 PM
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I know were're getting off topic here, but mmmmmmm Desmosedici = very nice. Man are they fast in testing this year too, wow. Looks like another fun MotoGP year.
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BigD9146gt
post Feb 1 2005, 12:34 PM
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Nathan, I second that! MotoGP sould be great this year!

Duck, good point!!! Even though the Desmo is an awsome working system, the adjustments that are required to keep them up to spec are extreamly time consuming.

Its like the early 356 Carrera 4 cam motors... book time is 40hours!! I'm not kidding. They figured it would take you 3 times to get it right... Its all bevel gears and shafts, first you adjust the exhaust cam, then the intake cam. Pro's know how to compensate so that once they tighten the intake cam gear, the exhaust doesn't move. The good thing is once the adjustment is done, you never have to adjust it again solong as nothing breaks!
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Al Meredith
post Feb 27 2006, 06:34 PM
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I was out at Chuck Beck house (he lives outside Atlanta now) last fall and the first thing I saw was a 4 cylinder 911 engine he built. I can't remember when he did it but I would say early 80's. I also have an old HOT VW's Mag from the "energy crisis" days where they built a 2 cylinder Ty1. I think there is an aero ty 1 engine that runs 2 cylinders on the same side.
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Mueller
post Feb 27 2006, 06:36 PM
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QUOTE (Al Meredith @ Feb 27 2006, 05:34 PM)
I was out at Chuck Beck house (he lives outside Atlanta now) last fall and the first thing I saw was a 4 cylinder 911 engine he built. I can't remember when he did it but I would say early 80's. I also have an old HOT VW's Mag from the "energy crisis" days where they built a 2 cylinder Ty1. I think there is an aero ty 1 engine that runs 2 cylinders on the same side.



you can buy a 2/3 911 engine brand new now.....bring money, I want to say just the bare block casting (new) is $10K or something crazy like that....
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Cap'n Krusty
post Feb 27 2006, 06:37 PM
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QUOTE (Al Meredith @ Feb 27 2006, 04:34 PM)
I was out at Chuck Beck house (he lives outside Atlanta now) last fall and the first thing I saw was a 4 cylinder 911 engine he built. I can't remember when he did it but I would say early 80's. I also have an old HOT VW's Mag from the "energy crisis" days where they built a 2 cylinder Ty1. I think there is an aero ty 1 engine that runs 2 cylinders on the same side.

Ya coulda bought a REAL Porsche flat 8 yesterday at the Ustabedunkel's swap meet! The Cap'n
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Mueller
post Feb 27 2006, 06:40 PM
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QUOTE (Cap'n Krusty @ Feb 27 2006, 05:37 PM)
QUOTE (Al Meredith @ Feb 27 2006, 04:34 PM)
I was out at Chuck Beck house (he lives outside Atlanta now) last fall and the first thing I saw was a 4 cylinder 911 engine he built. I can't remember when he did it but I would say early 80's. I also have an old HOT VW's Mag from the "energy crisis" days where they built a 2 cylinder Ty1. I think there is an aero ty 1 engine that runs 2 cylinders on the same side.

Ya coulda bought a REAL Porsche flat 8 yesterday at the Ustabedunkel's swap meet! The Cap'n

what was the asking price?

is this part of the stolen Volask motor horde??
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cbenitah
post Feb 27 2006, 07:10 PM
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QUOTE (Cloudbuster @ Jan 28 2005, 12:23 PM)
Hans Dahlbeck?

Ahh a swede, I should find out if its a relative.. imagine the typ of engine I will have when I'm done (IMG:http://www.914world.com/bbs2/html/emoticons/av-943.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/av-943.gif)
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Mueller
post Feb 27 2006, 07:15 PM
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QUOTE (cbenitah @ Feb 27 2006, 06:10 PM)
QUOTE (Cloudbuster @ Jan 28 2005, 12:23 PM)
Hans Dahlbeck?

Ahh a swede, I should find out if its a relative.. imagine the typ of engine I will have when I'm done (IMG:http://www.914world.com/bbs2/html/emoticons/av-943.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/av-943.gif)

I do less favors for relatives than I do for friends (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

you wouldn't get squat from me, hahahaha

I wonder if he ever moved over here to the US as the article states???
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ClayPerrine
post Feb 27 2006, 07:51 PM
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How about something like this???


(IMG:http://www.perrinefamily.org/photogallery/8enginebottom.JPG)
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Mueller
post Feb 27 2006, 07:52 PM
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QUOTE (ClayPerrine @ Feb 27 2006, 06:51 PM)
How about something like this???


(IMG:http://www.perrinefamily.org/photogallery/8enginebottom.JPG)

okay, spill the beans...whos 914 is getting that??? (IMG:http://www.914world.com/bbs2/html/emoticons/wub.gif)
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Aaron Cox
post Feb 27 2006, 08:00 PM
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i wanna say thats a photoshop.....

nice 907/908 motor
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rick 918-S
post Feb 27 2006, 08:01 PM
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Dude! is that at your house? (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif) Thant thing is awesome! (IMG:http://www.914world.com/bbs2/html/emoticons/smiley_notworthy.gif)

this whole subject to me is about the cool factor. I like the idea of tryin to build a a flat 8 from a bucket of parts and a tig welder. Who cares if it can even run. I would be cool to try.
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bd1308
post Feb 27 2006, 08:02 PM
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i'll see if i can dig up two bus motors....

The VW guy owes me....

b
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Brian Mifsud
post Feb 27 2006, 08:22 PM
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Mike...while your in there pouring aluminum, how about adding a few more pounds to the crucible.....

Do a straight 8 using the 911 heads arouind a chevy crank???
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