Turbocharged header length

[Boport]

Larry,

Thats kinda what I was looking for, a "next best" primary length to shoot for that was around half the length. There's no way to fit a full length into the chassis without some very restrictive bends, and the overall design is very similar to the pictured header Burns did there for Ed Bergenholtz's car.

It was my understanding there are several wave timing events to make use of, and exactly half the ideal length would work decent. I'm just trying to avoid a length that would be counterproductive and hurt power.

Thanks for your and other replies,

Bo

[maxracesoftware]

Larry,

Thats kinda what I was looking for, a "next best" primary length to shoot for that was around half the length. There's no way to fit a full length into the chassis without some very restrictive bends, and the overall design is very similar to the pictured header Burns did there for Ed Bergenholtz's car.

It was my understanding there are several wave timing events to make use of, and exactly half the ideal length would work decent. I'm just trying to avoid a length that would be counterproductive and hurt power.

Thanks for your and other replies,

Bo

using the "dimensions" in PipeMax for "Shortie" type Headers works
great if that's all you can fit in your RaceCar

[JBV-HEADS]

Gentlemen,
This interest me. I only work in a NA environment and understand that in the V8’s, the out of sequence cylinder affects the exhaust tuning, diluting it to a lesser strength than 4 cylinders or straight 6’s. In the 4’s and 6’s we can tie cylinders together to form near perfect tuning lengths. On the V8’s, the cylinder is on the far side, that is needed to complete the pairings. But here is my question. Is it possible that when the 1st pulse is created at the tube junctions, that only inches away a second pulse is generated by the turbo vanes. Much like the out of sequence V8 pulse dilutes the in sequence cylinder’s pulses. This secondary pulse dilutes the primary just as it has bounced off of the exhaust valve and starts to create more vacuum. Two pulses crashing into each other would negate all the work that was used to create the primary pulse in the first place. Especially so close to the exhaust valve. If this is true, then might a 3 into 1, followed by some form of AR cone, then the off cylinder bought in like your 4-2-1 turbo set up in the picture . The cone would weaken the second pulse to the in sequence cylinders and the out of sequence cylinder would only have one pulse, and be tuned by length. It’s just food for thought, but if anyone has something extra to add, please do. Good luck,

Joe

[RMFheaders]

I have found that the higher you go up in HP the more important a full length. Equal length header is.There is a point where a shorty is not going to produce the power that A "correct" header will.I have made up to 300 more HP on a Blown Alcohol Turbo Pontiac headed BBC.With a long tube over a little shorty.This first pic is a 1.8 turbo Honda on alcohol
that makes over 1200HP
http://i16.photobucket.com/albums/b50/R ... 020-8A.jpg
Here is another car that also makes over 1200hp
http://i16.photobucket.com/albums/b50/R ... -25A_1.jpg
Here is few more Street cars that are over 500hp
http://i16.photobucket.com/albums/b50/R ... 000-_5.jpg
http://i16.photobucket.com/albums/b50/R ... 014-5A.jpg
http://i16.photobucket.com/albums/b50/R ... 016-6A.jpg
But if your just going to run 8 or 10lbs boost. You can use an old sprinkler system for a manifold and it doesn't seem to matter.

[Bos's5.0]

Incredible looking headers RMF...
Do you have some data you would be willing to share of back to back tests with various header designs on turbo engines?