Mmm, reverse flow...

"Demon-Xanth knows how to operate a street." (demon-xanth) 12/20/2015 at 19:34 • Filed to: None

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The Crazy Kanuck; RIP Oppositelock > Demon-Xanth knows how to operate a street. 12/20/2015 at 19:48

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Looks great in the Ferrari 312 F1.

Speed > Demon-Xanth knows how to operate a street. 12/20/2015 at 19:48

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I read “reverse flow” and began squinting to see if that was an LT1 in the lead shot and then let out an “Oh shit!” when I realized what you meant. So. Fucking. Cool.

TheVancen- In Pursuit of a Greater Payday and Car Parts > Demon-Xanth knows how to operate a street. 12/20/2015 at 19:48

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I am having a crisis. And an idea. Reverse flow SHO V6?

Dogapult > TheVancen- In Pursuit of a Greater Payday and Car Parts 12/20/2015 at 20:03

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but that beautiful intake manifold...

Dogapult > Demon-Xanth knows how to operate a street. 12/20/2015 at 20:04

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What goes into making an engine “reverse flow” is it just cams and custom manifolds? Are the heads redone? (I figure, yes.) And other than looking cool and probably sounding better, are there performance advantages?

camaroboy68ss > Speed 12/20/2015 at 20:14

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no terrible opti spark there thank goodness. almost looks like an ford flat head distributor cap

Demon-Xanth knows how to operate a street. > Dogapult 12/20/2015 at 20:15

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Some engines have abysmal flow on one port, and turbo diesel Vs are often reverse with the turbos tucked ontop, eg powerstroke.

camaroboy68ss > Demon-Xanth knows how to operate a street. 12/20/2015 at 20:16

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I think this is a ford flathead. I saw a head similar to this when I was the NHRA museum.

scoob > Demon-Xanth knows how to operate a street. 12/20/2015 at 20:38

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... I have no idea what I’m looking at.

TheVancen- In Pursuit of a Greater Payday and Car Parts > Dogapult 12/20/2015 at 20:39

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Mm. True enough. How about a reverse flow Ford 302 in a 1977 Mercury Capri?

samssun > scoob 12/20/2015 at 21:02

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Normally the intake valves are on the inside (within the V) and the exhaust valves are on the outside (think where exhaust headers go). Reverse flow has the intake on the outside (the short trumpets on the 1st and 3rd picture), and dumps the exhaust in the middle.

I don’t know why you’d do this for a NA engine, but if you put some turbos in the valley you get nice packaging and a short exhaust path, plus your manifolds can link cylinders on opposite banks for an ideal pulse sequence into twin scroll turbos.

.

samssun > Dogapult 12/20/2015 at 21:12

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All you have to do is cross the equator, and then the crank spins the opposite direction. You get a little resistance pulling in air from behind the car, but without a throttle you get huge efficiency gains. The short exhaust run to your air filter is also a plus, and your gas pedal acts as an air brake.

Drakkon- Most Glorious and Upright Person of Genius > Demon-Xanth knows how to operate a street. 12/20/2015 at 23:09

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Every time I see how much plumbing if under the hood of a Powerstroke, I think engineers at Ford need to be shot. A ‘between the vee’ turbo with a liquid intercooler should have about 10 feet of turbo plumbing. That stupid truck had 800.

Dogapult > TheVancen- In Pursuit of a Greater Payday and Car Parts 12/21/2015 at 00:28

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That I could get behind.