X pipe

289nate · Post by **289nate** » Sun Sep 28, 2014 1:34 pm

The location of the X pipe will determine performance gains. You don't just add an X pipe and get a gain. Finding the right distance from the collector can be a pain so I personally didn't bother with one.

Keith Morganstein · Post by **Keith Morganstein** » Sun Sep 28, 2014 5:05 pm

Has anyone experimented with an X pipe on a traditional V twin Harley? This would be to keep most of the dual pipe look, but improve performance.

Kenova · Post by **Kenova** » Sun Sep 28, 2014 10:40 pm

Keith Morganstein wrote:Has anyone experimented with an X pipe on a traditional V twin Harley? This would be to keep most of the dual pipe look, but improve performance.

That I would like to hear.

Ken

exhausted · Post by **exhausted** » Sun Sep 28, 2014 11:49 pm

Keith Morganstein wrote:Has anyone experimented with an X pipe on a traditional V twin Harley? This would be to keep most of the dual pipe look, but improve performance.

Keith,
Surely you have seen 2into1 pipes for harleys. There is absolutely no need to have an x or crossover and two tailpipes for performance.

Post by **Kevin Johnson** » Sun Sep 28, 2014 11:59 pm

http://www.hdforums.com/forum/vendor-fo ... -twin.html

job1bf · Post by **job1bf** » Mon Sep 29, 2014 11:07 am

someone asked about the sound of 8 into 1 - I saved this link from a thread on speed talk a long time ago. I am almost certain it was said to be 8 into 1...would be better without the music, but you can get a pretty good idea

https://www.youtube.com/watch?v=5OS_k0V ... rUKwb4WhKA

there are a few others if you search youtube...

HTH's...

Rizzle · Post by **Rizzle** » Mon Sep 29, 2014 11:44 am

job1bf wrote:someone asked about the sound of 8 into 1 - I saved this link from a thread on speed talk a long time ago. I am almost certain it was said to be 8 into 1...would be better without the music, but you can get a pretty good idea

https://www.youtube.com/watch?v=5OS_k0V ... rUKwb4WhKA

there are a few others if you search youtube...

HTH's...

So how does an 8-1 work on a v10 exactly?

Also, if you go to 0:35 you can see the 5-1 collector on the one bank, or at least what looks to be 5-1 since you can't exactly count the hidden pipes.

Post by **hoffman900** » Mon Sep 29, 2014 11:52 am

Here is one of the cars Calvin builds headers for. The 4-2-1 headers all dump into a single 3" pipe, I believe.

https://www.youtube.com/watch?v=NELSera ... E84O_2c7pA

Bill-C on here is the engine builder.

Dan Timberlake · Post by **Dan Timberlake** » Mon Sep 29, 2014 12:14 pm

exhausted wrote:
englertracing wrote:
cgarb wrote:
makes it sound like
an engine that actually has a 180 crank
Not only does it sound like and engine with a flat crank, the engine runs like it has a flat crank in it...

===================

Except the secondary vibration stays low, to the possible benefit of driver and auxilliary equipment.

job1bf · Post by **job1bf** » Mon Sep 29, 2014 12:35 pm

Rizzle wrote:
job1bf wrote:someone asked about the sound of 8 into 1 - I saved this link from a thread on speed talk a long time ago. I am almost certain it was said to be 8 into 1...would be better without the music, but you can get a pretty good idea

https://www.youtube.com/watch?v=5OS_k0V ... rUKwb4WhKA

there are a few others if you search youtube...

HTH's...
So how does an 8-1 work on a v10 exactly?

Also, if you go to 0:35 you can see the 5-1 collector on the one bank, or at least what looks to be 5-1 since you can't exactly count the hidden pipes.

Oops...sorry about that..not sure that happened..here is the correct link...

https://www.youtube.com/watch?v=OxQAz_t ... rUKwb4WhKA

Belgian1979 · Post by **Belgian1979** » Mon Sep 29, 2014 5:07 pm

Does an X quiet/muffle the sound some ?

plovett · Post by **plovett** » Mon Sep 29, 2014 5:40 pm

Here's a 428 FE going 0-135 mph with an x-pipe, 3.5" exhaust, and Dynomax Bullets. I just put the x-pipe as close to the header collectors as possible, so I'm sure it's not optimal. It did quiet the exhaust some. And I like the sound.

http://vid231.photobucket.com/albums/ee ... c79ad5.mp4

The narrative is not correct. The actual 1/4 mile time was 11.49 at 124 mph according to the G-Tech. Horrible launch, in and out and back into the throttle in 1st gear. That's why the time is so bad for the mph. Street tires and all......

I suppose this doesn't help with the OP's question, but I thought the sound might be entertaining. I'm shifting a 7000 rpm or a bit less.

paulie

ItalianJohnny · Post by **ItalianJohnny** » Mon Sep 29, 2014 9:04 pm

66Vette wrote:I get the same comments on the sound of my car. It has a Dr Gas X-pipe and mufflers. Engine is a 374CI (4.125 x 3.5). People come up to me after a run (autocross) and always ask about the unique sound.

Which Mufflers ???

Keith Morganstein · Post by **Keith Morganstein** » Mon Sep 29, 2014 9:12 pm

exhausted wrote:
Keith Morganstein wrote:Has anyone experimented with an X pipe on a traditional V twin Harley? This would be to keep most of the dual pipe look, but improve performance.
Keith,
Surely you have seen 2into1 pipes for harleys. There is absolutely no need to have an x or crossover and two tailpipes for performance.

Yes and of course and they perform the best. Problem is many owners don't like the Look of a 2-1

77cruiser · Post by **77cruiser** » Tue Sep 30, 2014 7:58 am

When running Pipemax for my combo it suggests a H pipe 19.3 inches from the primaries, but the X pipe 77.3 inches from the primaries.

Don Terrill’s Speed-Talk

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