The Cal-look Lounge
Welcome, Guest. Please login or register.
Did you miss your activation email?
November 04, 2024, 22:58:43 pm

Login with username, password and session length
Thank you for your support!
Search:     Advanced search
351158 Posts in 28651 Topics by 6852 Members
Latest Member: garry34
* Home This Year's European Top 20 lists All Time European Top 20 lists Search Login Register
+  The Cal-look Lounge
|-+  Cal-look/High Performance
| |-+  Pure racing
| | |-+  Has an oversized header noticeable effect on HP?		 « previous next »
Pages: [1] Print
Author Topic: Has an oversized header noticeable effect on HP?  (Read 5597 times)
Jordy/DVK
Sr. Member
****
Posts: 464
« on: October 20, 2007, 20:19:18 pm »

 Hi Guys,

 I'm just wondering wether an oversized header has very much effect on the HP of your engine?
 Does a too large header really slow down the exhaust gas speed that much? How much does this affect the HP output?
 Any ideas?

 Cheers, Jordy

 
Logged
Proud member of:
DVK ~ Der Vollgas Kreuzers
  "The Full-Throttle Cruisers"

1951 medium brown splitwindow beetle (resto in progress)
1968 Cal-look(-a-like) (my daily driver)
Bewitched666
Hero Member
*****
Posts: 863


Bewitched
« Reply #1 on: October 21, 2007, 12:27:42 pm »
It will depends what engine you are running.
It will hold back some Grin
Logged
Fast vw beetle's rule
Jordy/DVK
Sr. Member
****
Posts: 464
« Reply #2 on: October 22, 2007, 19:59:37 pm »

 Okay... is a 1-3/4 SS header with 2" collector too much for let's say a 1915cc, with 043 heads 42x37,5, engle FK-8 engine?
 Is that JayCee SS header any good?
Logged
Proud member of:
DVK ~ Der Vollgas Kreuzers
  "The Full-Throttle Cruisers"

1951 medium brown splitwindow beetle (resto in progress)
1968 Cal-look(-a-like) (my daily driver)
Jordy/DVK
Sr. Member
****
Posts: 464
« Reply #3 on: October 22, 2007, 20:15:22 pm »

 
Logged
Proud member of:
DVK ~ Der Vollgas Kreuzers
  "The Full-Throttle Cruisers"

1951 medium brown splitwindow beetle (resto in progress)
1968 Cal-look(-a-like) (my daily driver)
John Rayburn
Hero Member
*****
Posts: 2481


Der Kleiner Panzers
« Reply #4 on: October 23, 2007, 00:21:12 am »
1 5/8 would suit that combo a little better. 1 3/4 might cost you a little bottom end.
Logged
I also park at Nick's.
Shubee2 (DSK)
Hero Member
*****
Posts: 2865


"There's No School Like OLD SCHOOL"


WWW
« Reply #5 on: October 23, 2007, 00:30:40 am »
if you go to big  you loose bottom end power, with a smaller pipe you get more bottom end Power, Smaller Motors run better with a little Back Pressure On a Big Motor with Big Heads It Needs the Bigger Exhaust
Logged
Der Selten Kafers VW Club.
Founding Member Est: 1976

58 Ragtop Old School Cal Look
66 Cal Look Drag Car
67 Resto Cal Look
67 Chevy II Nova L79
02 Camaro Vert!
04 Corvette Vert!
04 Colorado Pickup
Bewitched666
Hero Member
*****
Posts: 863


Bewitched
« Reply #6 on: October 23, 2007, 21:19:44 pm »
Ah the one from ZZPACKED Jordy.

I would go with a 1 5/8 inch header for the 1915cc,my 2 cents Grin
Logged
Fast vw beetle's rule
Peter
Hero Member
*****
Posts: 1301
« Reply #7 on: October 24, 2007, 19:35:35 pm »
isnt that a 2 inch header?
Logged
Jordy/DVK
Sr. Member
****
Posts: 464
« Reply #8 on: October 25, 2007, 00:40:55 am »
Quote from: ruff on October 24, 2007, 19:35:35 pm
isnt that a 2 inch header?

 The pipes are 44mm (1-3/4) where they connect to the heads and I believe that at the collector it is 49mm or something like that.
 (see the webshop of http://www.KaagKevers.nl)

 € 125,- for an SS header like this is a bargain... (with a free stainless steel trumpet/vase... )
Logged
Proud member of:
DVK ~ Der Vollgas Kreuzers
  "The Full-Throttle Cruisers"

1951 medium brown splitwindow beetle (resto in progress)
1968 Cal-look(-a-like) (my daily driver)
Tobi/DFL
Sr. Member
****
Posts: 445
« Reply #9 on: October 25, 2007, 08:56:06 am »
Hi Jordy,
I wouldn´t try a 1 3/4" header for your 1914cc as well. My 2176cc engine runs quite well with its tiny 1 5/8" Bugpack header (modified to a large flange) and modified (large flange) CB dual quiets. Anyway I guess I´m loosing some top end power with it so I will probably change it to a 1 3/4" header with larger, homemade dual quiets very soon.
Is the price you mentioned before for a new header? If so, where can I find it on their website (my dutch isn´t that good Wink)?
If you want to you could buy my 1 5/8" header (with O² bung) if I should buy a larger header...
Bye,
Tobi
Logged
Bewitched666
Hero Member
*****
Posts: 863


Bewitched
« Reply #10 on: October 25, 2007, 17:30:15 pm »
Trumpet/vase=other word for Stinger???
Logged
Fast vw beetle's rule
Jordy/DVK
Sr. Member
****
Posts: 464
« Reply #11 on: October 27, 2007, 16:36:03 pm »
 Hey Tobi,

 Here's you can find the header ( stinger included): http://www.kaagkevers.nl/shop.php?id=10068#K%20181
 Here another header (2nd hand but unused) for sale: http://www.keversite.nl/prikbord/adv.php?id=10763

 I don't know much about the finishing/fitting quality of the header. 

Quote from: Tobi/DFL on October 25, 2007, 08:56:06 am
If you want to you could buy my 1 5/8" header (with O² bung) if I should buy a larger header...

  If you're going to buy a bigger header & DQP please let me know, I might indeed be interested! Wink

 Cheers! Jordy Wink


 @Bewitched: yeah.. with vase/trumpet I referred to the stinger...
Logged
Proud member of:
DVK ~ Der Vollgas Kreuzers
  "The Full-Throttle Cruisers"

1951 medium brown splitwindow beetle (resto in progress)
1968 Cal-look(-a-like) (my daily driver)
JS
Hero Member
*****
Posts: 1628
« Reply #12 on: October 27, 2007, 18:12:44 pm »
"Chinese kwaliteit ". I´m a bit sceptic!  Cheesy
Logged
Signature.
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!