While on the subject...for you diy types
| Slant Six Forum https://mail.slantsix.org/forum/ |
|
| beat to death topic of headers...stepped primaries.. https://mail.slantsix.org/forum/viewtopic.php?t=56080 |
Page 1 of 1 |
| Author: | dwrlhcaz [ Sat Aug 30, 2014 9:08 am ] |
| Post subject: | beat to death topic of headers...stepped primaries.. |
Any of you fellas play with stepped headers? Or true merge collectors?...on my roots charged build..im thinking of running 20" or so of 1-5/8 stepping up to 1-3/4 for the last 16-18" or so for as close to equal length as possible. I would also run a true mitered merge into a 2.5" outlet for each collector.. and exiting uncorked through the drivers fender. Im of the opinion a blower motor really doesnt care about primary length as scavenging is handled by the supercharger..but ive noticed over the years that an optimized naturally aspirated setup often responds best to all types of forced induction...just curious to see whos doin what for headers outside of the brand "C" most seem to run. I will add that in the early 2000s..a shop i was associated with cut traditional collectors off of an aftermarket set of headers and replaced the with some burns brand collectors and we saw 15hp and 10ftlbs at the rubber on a honda nsx..that healthy gains in my opinion.obviously not for the cost of some burns..but i dont buy parts..i build them.. |
|
| Author: | dwrlhcaz [ Sat Aug 30, 2014 10:43 am ] |
| Post subject: | |
While on the subject...for you diy types
|
|
| Author: | dwrlhcaz [ Sat Aug 30, 2014 10:44 am ] |
| Post subject: | |
|
|
| Author: | dwrlhcaz [ Sat Aug 30, 2014 10:46 am ] |
| Post subject: | |
|
|
| Author: | 1974duster kev [ Sun Aug 31, 2014 4:24 pm ] |
| Post subject: | |
Awesome! I was working on a jig for merge collectors last time at home! Kev |
|
| Author: | dwrlhcaz [ Sun Aug 31, 2014 7:43 pm ] |
| Post subject: | |
Jig! 
|
|
| Author: | slantzilla [ Sun Aug 31, 2014 8:36 pm ] |
| Post subject: | |
Mike experimented with step headers on the blue car. He did not see anything to make them worth the trouble. He has tried merge collectors on the Stocker and has been very happy with them. |
|
| Author: | Kidd [ Sun Aug 31, 2014 9:58 pm ] |
| Post subject: | |
If I can get my shifter to come from the rear, and pull the lever backwards, I think I will send the long tube headers to you.....or buy some collectors, and weld them on mine. Think they would help even the shorties? |
|
| Author: | dwrlhcaz [ Mon Sep 01, 2014 8:16 am ] |
| Post subject: | |
Im of the opinion nothin out performs a good merge collector given all else stays the same..even the shorty cliffords wouldmost likely benifit |
|
| Author: | dwrlhcaz [ Mon Sep 01, 2014 11:59 am ] |
| Post subject: | |
To add to this..merge collectors are as i see it..ideal due to less turbulant conditions inside the collector..smoother flow ultimately requires, or occupies rather, less room inside the collector in each pulse event which allows one to run a smallet diameter collector. For beter scavenging and a more broad power range.(area under the curve). Primary diameter and length affect operating range more so than the collector. |
|
| Author: | dwrlhcaz [ Mon Sep 01, 2014 12:17 pm ] |
| Post subject: | |
http://www.epi-eng.com/piston_engine_te ... nology.htm |
|
| Page 1 of 1 | All times are UTC-08:00 |
| Powered by phpBB® Forum Software © phpBB Limited https://www.phpbb.com/ |
|