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Teaser Picture - 427 Cubic Inch - 7.0 S4 Engine - visit to Todd's garage

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Old 10-06-2006, 11:05 PM
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hacker-pschorr
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Default Teaser Picture - 427 Cubic Inch - 7.0 S4 Engine - visit to Todd's garage

More to come


Last edited by hacker-pschorr; 10-07-2006 at 12:11 AM.
Old 10-06-2006, 11:10 PM
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FlyingDog
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4.286 x 25.4 = 108.9mm
93.9mm stroke
Old 10-06-2006, 11:16 PM
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mspiegle
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wow.... biiiig.

we gotta keep up the whole "german corvette" thing, right?
Old 10-06-2006, 11:59 PM
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SeanR
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Hacker,

Pardon my french.

You are a ****ing tease.
Old 10-07-2006, 12:05 AM
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Jim R.
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Pure ****!

Jim
Old 10-07-2006, 12:21 AM
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IcemanG17
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Hmm
Lets see with most 6.4-5 strokers putting down between 480-575whp....that would make a 7.0L about 515 to 620whp.....that would make one mean raceshark engine!! Hmm maybe Todd could sponsor Kibort????????????
Old 10-07-2006, 12:23 AM
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hacker-pschorr
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Originally Posted by IcemanG17
Hmm
Lets see with most 6.4-5 strokers putting down between 480-575whp....that would make a 7.0L about 515 to 620whp.....that would make one mean raceshark engine!! Hmm maybe Todd could sponsor Kibort????????????
You need to add boost to those numbers - this engine will be supercharged (boost numbers not hammered out yet).

Todd is already very much involved in Mark's engine.
Old 10-07-2006, 12:30 AM
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worf928
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Originally Posted by Hacker-Pschorr
You need to add boost to those numbers - this engine will be supercharged (boost numbers not hammered out yet).
(Not taking away from the engine **** but...) where's the picture of the transaxle that will put 7 liters of boosted power to the wheels?
Old 10-07-2006, 12:33 AM
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Originally Posted by worf928
(Not taking away from the engine **** but...) where's the picture of the transaxle that will put 7 liters of boosted power to the wheels?
Some things are still a very closely guarded secret.
Old 10-07-2006, 12:38 AM
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IcemanG17
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Originally Posted by Hacker-Pschorr
You need to add boost to those numbers - this engine will be supercharged (boost numbers not hammered out yet).

Todd is already very much involved in Mark's engine.
Hacker
So a boosted 7.0L....thats really insane......sounds like a brutal driveline destroyer to me!! :>) So with about 1 bar boost (or so) that would be around 800whp or so.....with the right setup....1000 is possible??? Silly, but possible...why not....Supras make up to 1500 with 1/2 that displacement...Vipers do it on 8-8.3 liter turbos.....
Old 10-07-2006, 01:27 AM
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918-S
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Man, that thing is punched out to the water jacket! I want to do that!

Doesn't look like much water will flow around the cylinders. Will you be able to keep it cool?

Last edited by 918-S; 10-07-2006 at 01:53 AM.
Old 10-07-2006, 08:25 AM
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Peter F
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Simply awesome

Now let us know more

/Peter
Old 10-07-2006, 09:18 AM
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Mike Simard
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Originally Posted by 918-S
Man, that thing is punched out to the water jacket! I want to do that!

Doesn't look like much water will flow around the cylinders. Will you be able to keep it cool?
The cylinder spacing is large enough to have room between cylinders with a big bore. The Bore spacing is 4.8 so subtract 4.31 (common bore size) and you have .245 maximum cylinder thickness before they touch which is plenty thick. Completely boring away the whole stock cylinder and replacing it with a sleeve is the way to go, the initially strong sounding idea of being "punched out to the water jacket" is actually practical and commonly done nowadays . Darton is a big supplier of sleeves, they have alot of stocked sizes including stepped ones and are actually working on a 928 specific sleeve now that should be available off the shelf in the near future. If you are serious about wanting to do that let me know and I may be able to provide dimensions, I have a block next to me and am taking measurements for the sleeves right now.
Old 10-07-2006, 09:49 AM
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Todd was working with Darton to have sleeves produced. They are not (unless something changed) setup to offer a bore this large. Not to mention the "off the shelf" Darton sleeves are made from Ductile Iron - these are steel (sorry, did not write down the number).

Todd mentioned when Darton produces a high horsepower / high boost cylinder, they switch to steel (like these). So he figured, why mess around with the Iron. He's been producing steele 911 / VW cylinders for two decades, being used on motorcycles & auto racing applications. So switching to a 928 variation wasn't much of a stretch.

I'll be showing some more close up details of these sleeves.

In a different thread I mentioned Todds "People's Motor". It's a term he's using to the descrive the "off-the-shelf" steel sleeves he will be producing and offering soon. Specific details are not yet available for public consumption.
Old 10-07-2006, 10:19 AM
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Scott M.
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Forget the bore... I wanna see what the H he's doing with the head to mate those bad boys. Must be some olympic pool sized bowl.

My hats off to Todd for stretching the limits.


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