Running upside-down.

"Grindintosecond" (Grindintosecond) 04/16/2015 at 16:03 • Filed to: planelopnik

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I love engine technology, especially when people get creative to solve problems. For $39 you can order plans to make an Olds V-8 run perfectly well upside-down, should you ever want such a thing. Steve Wittman solved the problem by engineering it, and this 267 cubic inch V-8 ran around 3,000 rpm or so on direct drive. Reliably. Have a listen, it's pretty good.

The mods for this in the plans involve just a few simple drillings in the block for eliminations of steam pockets and alternate oil drains from main seals and other locations. The oil is collected from the valve covers into a fabbed box behind (square in the picture) where a pickup tube feeds the oil pump. Otherwise, it appears to be pretty straight forward. I mean, here is the king of simple engineering speed for great results showing you it works.

I want to do this with a GM high value pushrod V-6 or a modern LS* aluminum block engine and see if anything became more complicated since then.

CalzoneGolem > Grindintosecond 04/16/2015 at 16:06

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I think boats like to have the engine upside down.

Grindintosecond > CalzoneGolem 04/16/2015 at 16:11

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Boats are strange. The outboards seem to have them sideways on end...horizontal?

You can tell a Finn but you can't tell him much > CalzoneGolem 04/16/2015 at 16:13

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I've heard it really screws with their cooling and results in over revving.

RamblinRover Luxury-Yacht > Grindintosecond 04/16/2015 at 16:13

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Does it have a custom crank? It appears to be an Olds 215 aluminum, so if it's at 267ci, something wacky has occurred. Besides it being upside-down, I mean.

CalzoneGolem > Grindintosecond 04/16/2015 at 16:16

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I ain't even mad!

CalzoneGolem > You can tell a Finn but you can't tell him much 04/16/2015 at 16:16

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You got to put it in the water. They are water cooled.

You can tell a Finn but you can't tell him much > CalzoneGolem 04/16/2015 at 16:21

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So the upside down ones are water bath cooled instead of flow through? That's ingenious!

CalzoneGolem > You can tell a Finn but you can't tell him much 04/16/2015 at 16:21

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You've got the whole body of water to dissipate heat.

Grindintosecond > RamblinRover Luxury-Yacht 04/16/2015 at 16:30

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It's a 215 yes but using a crank from an olds 300.

Frank Grimes > CalzoneGolem 04/16/2015 at 16:35

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I want this in the back/middle of an NSX and be like

RamblinRover Luxury-Yacht > Grindintosecond 04/16/2015 at 16:38

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Common enough mod, but people seem to get varying ci doing that - probably because at that point they're typically a dash oversize on the pistons and/or have different rounding errors.

HammerheadFistpunch > CalzoneGolem 04/16/2015 at 16:46

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unless you are 7 marine, then you just jam a 6.2 liter LS in there and rig up a driveshaft somehow

Grindintosecond > RamblinRover Luxury-Yacht 04/16/2015 at 16:52

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Or they're doing everything to it with big pistons, etc....

RamblinRover Luxury-Yacht > Grindintosecond 04/16/2015 at 17:02

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Going completely berserk with these usually involves a 300 crank *and* a larger bore Rover block. Since this is a small-bore Olds block, it's naturally going to be an unusual ci.

CalzoneGolem > HammerheadFistpunch 04/17/2015 at 08:00

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I'm ok with this.

CalzoneGolem > Frank Grimes 04/17/2015 at 08:01

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Yeah, sticking straight up like a shark fin.

Frank Grimes > CalzoneGolem 04/17/2015 at 13:48

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exactly