Series I headers?!!?!!?! - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 12-11-2004, 05:08 PM   #21
Senior Member
True Car Nut
 
Join Date: Nov 2002
Location: Texarkana, Texas
Posts: 6,041
Thanks: 0
Thanked 0 Times in 0 Posts
Damemorder is on a distinguished road
Default

HEADER DESIGN PROGRAM

General Engine Specifications
Total Number Of Cylinders in the Engine: 6
Cylinder Bore Diameter 3.800 in.
Stroke Length 3.400 in.

Engine Performance Specifications
Compression Ratio 8.5
Peak Engine Horsepower Measured at the Flywheel 170
Engine RPM at Peak Horsepower 3500
Performance Factor (See Table) 5

Exhaust System Characteristics
Exhaust Port Length in Cylinder Head 2.48 in.
No. of Collected Primary Pipes in One header 3

Calculated Values
Primary Pipe Inside Diameter 1.23 in.
Primary Pipe Length 48.5 in.
Collector Inside Diameter 1.80 in.
Collector Length 14.2 in.
Engine Displacement 231.4 cu. in.
Damemorder is offline   Reply With Quote
Old 12-11-2004, 05:49 PM   #22
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

Don't you series one guys have diffrent length exhaust ports?
95naSTA is offline   Reply With Quote
Old 12-11-2004, 05:56 PM   #23
Senior Member
Certified GM nut
 
Join Date: Feb 2003
Location: Georgia
Posts: 2,095
Thanks: 0
Thanked 0 Times in 0 Posts
DrJay is on a distinguished road
Default

what do you mean by different length?
DrJay is offline   Reply With Quote
Old 12-11-2004, 06:00 PM   #24
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

If i'm thinking right the two outer exhaust ports are symmetric and the inner port is off center. Wouldn't that inner port be longer than the other two?
If it is than the center primary would have to make up for that.
Right?
95naSTA is offline   Reply With Quote
Old 12-11-2004, 07:15 PM   #25
Senior Member
Certified Car Nut
 
Join Date: Jun 2003
Posts: 15,928
Thanks: 0
Thanked 0 Times in 0 Posts
BonneMeMN is on a distinguished road
Default

Dame the HP peak will be at the top of the rpm band.

We have equal distance exhaust ports, unlike the series II. Our Valves are I E I E I E compared to yours where its like I E I E E I or so.
BonneMeMN is offline   Reply With Quote
Old 12-11-2004, 07:31 PM   #26
Senior Member
True Car Nut
 
Join Date: Feb 2003
Location: Bloomington-Normal, IL 1997 SE
Posts: 3,734
Thanks: 0
Thanked 0 Times in 0 Posts
macho_mike21 is on a distinguished road
Default

Quote:
Originally Posted by Damemorder
HEADER DESIGN PROGRAM

General Engine Specifications
Total Number Of Cylinders in the Engine: 6
Cylinder Bore Diameter 3.800 in.
Stroke Length 3.400 in.

Engine Performance Specifications
Compression Ratio 8.5
Peak Engine Horsepower Measured at the Flywheel 170
Engine RPM at Peak Horsepower 3500?
Performance Factor (See Table) 5

Exhaust System Characteristics
Exhaust Port Length in Cylinder Head 2.2? in.
No. of Collected Primary Pipes in One header 3

Calculated Values
Primary Pipe Inside Diameter 1.23 in.
Primary Pipe Length 48.8 in.
Collector Inside Diameter 1.80 in.
Collector Length 14.2 in.
Engine Displacement 231.4 cu. in.
primary pipe length of over 4 feet?!?!?
macho_mike21 is offline   Reply With Quote
Old 12-11-2004, 07:32 PM   #27
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

Quote:
Originally Posted by BonneMeMN
We have equal distance exhaust ports, unlike the series II. Our Valves are I E I E I E compared to yours where its like I E I E E I or so.
That'* backwards.
95naSTA is offline   Reply With Quote
Old 12-11-2004, 07:39 PM   #28
Senior Member
Certified GM nut
 
Join Date: Feb 2003
Location: Georgia
Posts: 2,095
Thanks: 0
Thanked 0 Times in 0 Posts
DrJay is on a distinguished road
Default

Quote:
Originally Posted by 95naSTA
Quote:
Originally Posted by BonneMeMN
We have equal distance exhaust ports, unlike the series II. Our Valves are I E I E I E compared to yours where its like I E I E E I or so.
That'* backwards.
hehe yeah, ours are the off sequenced ports. Which is why our headers have one that reaches way out . Dame did some measurements, he'll probably pop in here in a few.
DrJay is offline   Reply With Quote
Old 12-11-2004, 07:47 PM   #29
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

Alright cool.
Cause that would suc to have all that money spent on them and have 1 primary throw off the scavanging.
cams/rockers/headers you guys are gonna be flying.
95naSTA is offline   Reply With Quote
Old 12-11-2004, 08:43 PM   #30
Senior Member
Certified Car Nut
 
Join Date: Jun 2003
Posts: 15,928
Thanks: 0
Thanked 0 Times in 0 Posts
BonneMeMN is on a distinguished road
Default

That'* backwards depending on what you're looking at, head or header.

I also said Like.

The series II is nice for modding because there'* an american market thanks to GP'*.
BonneMeMN is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Series 1 Headers sc3800fiero 1992-1999 6 01-30-2004 02:39 PM
Anyone want series II headers? BonneMeMN General GM Chat 1 01-18-2004 06:11 PM
Headers for Series 1 danpuzak Performance, Brainstorming & Tuning 2 11-03-2003 06:43 PM
Series 1 headers??? speedyguy 1987-1991 9 05-17-2003 03:30 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:18 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.