Reverse port? I don't know what to call it

crazyman · Post by **crazyman** » Tue Oct 27, 2009 5:08 pm

I'm looking for the term where they have the intake on the original exhaust side, and vice versa. I don't know exactly what it's called, and am having trouble finding any links.

I'm just curious about this, because it seems it would be ideal for a turbo V8.

Thanks again,
Scott

enigma57 · Post by **enigma57** » Tue Oct 27, 2009 7:34 pm

Here is one called a reverse intake engine, Scott......

http://photos1.blogger.com/blogger/2761 ... 0_0102.jpg

http://photos1.blogger.com/blogger/2761 ... 0_0105.jpg

Uses a set of 750cc Honda motorcycle carbs on each side and exhausts vertically via individual stacks.

Hope this helps,

Harry

crazyman · Post by **crazyman** » Tue Oct 27, 2009 10:21 pm

Thanks Harry.

enigma57 · Post by **enigma57** » Wed Oct 28, 2009 3:37 am

Scott, good luck with your project. I love these one off engineering exercises. Please keep us informed as to your progress.

Best regards,

Harry

crazyman · Post by **crazyman** » Wed Oct 28, 2009 9:14 pm

It appears that BMW and GM beat me to the punch.

http://www.nytimes.com/imagepages/2008/ ... popup.html

PFC1 · Post by **PFC1** » Wed Oct 28, 2009 10:14 pm

The new Ford 6.7 diesel has the reverse flow design.
http://www.autoblog.com/2009/08/31/bewa ... 6-7-liter/

Bret

Sirshredalot · Post by **Sirshredalot** » Thu Oct 29, 2009 2:11 pm

Please forgive me if I missed somthing or am just drunk...or somthing, but did they talk about urea injection?

I wonder how much theyll CHARGE for the urea...hehe.

God bless
-Shred

Keith Morganstein · Post by **Keith Morganstein** » Thu Oct 29, 2009 8:47 pm

This is very common on Diesels. many cats were like that as far back as the 1960's

urea injection works well for diesel emissions, but there are some issues. One big issue is that urea freezes in cold temperatures

Post by **Schurkey** » Fri Oct 30, 2009 3:37 pm

If I'm understanding the original post, he's interested in re-tasking the ports more than a "fresh design" that just happens to have the exhaust in the center of the Vee. In other words, I think he wants to take an ordinary, exhaust-on-the-outside cylinder head and CONVERT it so the gas flow is reversed.

I'm betting that port shapes are inherently more efficient with the gas flow in the design direction--but--I could be VERY wrong.

First I ever heard of revering the ports was with a blown Buick Nailhead. Thirty years later, I re-discovered the photo:

Unkl Ian · Post by **Unkl Ian** » Fri Oct 30, 2009 8:17 pm

http://cleverlever99.blogspot.com/

Unkl Ian · Post by **Unkl Ian** » Fri Oct 30, 2009 8:30 pm

Dick Landy built this for George Poteet:

http://flatfire.com/engine.htm

The stock intake port were used for the exhaust,
and new intake ports were welded up.

This is no too uncommon with Ford V8 flat heads,
because the stock exhaust ports are so restrictive.

91stang · Post by **91stang** » Fri Oct 30, 2009 9:55 pm

didn't ford have that in the early 60's called the gurney eagle or the gurney westlake? I do believe that it was just in a 60's fairlane in an issue of hotrod mag. They used a version of the 260 inch small block and it was overhead cam. pretty cool for the era.

PWMAX · Post by **PWMAX** » Sat Oct 31, 2009 10:59 am

Crower had some dominating Indy small block chevy engines that used Crower mechanical injection on the ex ports, and used the intake ports for ex. They were so powerful, I think they banned them.

Frank

levisnteeshirt · Post by **levisnteeshirt** » Sat Oct 31, 2009 12:30 pm

PFC1 wrote:The new Ford 6.7 diesel has the reverse flow design.
http://www.autoblog.com/2009/08/31/bewa ... 6-7-liter/

Bret

that looks like it would center alot of heat under the hood,

c4mo · Post by **c4mo** » Sat Oct 31, 2009 12:58 pm

I'm still curious as to why you would this? It would seem it would have more flow through the intake valve. So whats the advantage? thanks

Don Terrill’s Speed-Talk

Reverse port? I don't know what to call it

Reverse port? I don't know what to call it

hmm