Page 2 of 2

Re: Collector Size & Length - how short is too short?

Posted: Thu Jan 24, 2013 9:51 pm
by DOTracer
Might be worth it to purchase Larry Meaux's Pipemax software. I used it to design my headers before I built them.

The program will give not only primary diameter & length, but also details on collector design and several options listing optimal and down.

Re: Collector Size & Length - how short is too short?

Posted: Thu Jan 24, 2013 10:10 pm
by John_Heard
Does Pipemax have options for power adders? Was wondering how they dealt with that?

Re: Collector Size & Length - how short is too short?

Posted: Fri Jan 25, 2013 6:05 am
by DOTracer
John_Heard wrote:Does Pipemax have options for power adders? Was wondering how they dealt with that?
I just looked and it appears that the program only does N/A.

Re: Collector Size & Length - how short is too short?

Posted: Fri Jan 25, 2013 7:13 am
by John_Heard
I hear a lot of people speak very highly of that program. I suppose you could just treat a Nitrous engine as N/A, boosted would be a different story though.

What size primarys and collectors did it tell you was needed on your car?

Re: Collector Size & Length - how short is too short?

Posted: Fri Jan 25, 2013 7:33 am
by DOTracer
Came up with 2 options.

2 1/4 to 2 3/8 step, or 2 3/8 straight. 4 1/2" collector.

Can't remember the primary or collector/exhaust lengths.

Re: Collector Size & Length - how short is too short?

Posted: Fri Jan 25, 2013 7:51 am
by Mike Peters
John_Heard wrote:I suppose you could just treat a Nitrous engine as N/A, boosted would be a different story though.
I would be betting a full-boogie nitrous hog is going to require more tube than the same sized N/A engine. Cylinder pressure is cylinder pressure and there's more spent gases to get rid of.........