 009 vs. stock 1.8L dizzy for dual carb setup, I know it's been talked to death but... |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| pete914 |
 Feb 26 2008, 06:33 AM
Post
#1
|
|
Member  Group: Members Posts: 178 Joined: 21-August 07 From: east coast Member No.: 8,025  |
...let's talk some more.
I'm converting to dual webers from a single holley weber setup. Running a stock 1.8L dizzy with vacuum advance hooked-up. What are your suggestions/opinions for switching to a centrifugal advance 009. I know some people hate them, but the advance curve is steep and good for carbs so I'm told. Further, I just picked up a shiny new 009 off this site as it was recommended to me by people at AA for carb setups. Before we say anything about the mallory unit, of course I would love one of those, but I would also love to install a 6-cylinder... Would I be better off keeping the 1.8 stock dizzy and not hooking up the vacuum advance? Right now my single carb setup is dealing with getting bogged down in the low rpm range (timed to 27 degrees BTDC)...seems like the advance curve isn't steep enough. So, 1.8 stock dizzy vs. 009; opinions appreciated. |
   |
 
|
| type47 |
Feb 26 2008, 08:34 AM
Post
#2
|
|
Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
dizzy swaps are easy enough so i'd say install the 009 and tune it and see what you think of it. easy enought to swap back. however, i don't have carbs and don't know the effect of timing incorrectly. i looked at your advance and thought d-jet advance and thought there is a conflict with your 1.8L. i'm sure you have that worked out.
|
|
|
|
| computers4kids |
Feb 26 2008, 09:12 AM
Post
#3
|
|
Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
QUOTE(type47 @ Feb 26 2008, 06:34 AM)  i looked at your advance and thought d-jet advance and thought there is a conflict with your 1.8L. 1.8s, are not generally timed by full advance, they are timed at 850 rpm...then of course that is with FI. I'm sure the gurus will set us straight using carbs. |
|
|
|
| alpha434 |
Feb 26 2008, 09:17 AM
Post
#4
|
|
My member number is no coincidence. Group: Members Posts: 3,154 Joined: 16-December 05 From: Denver, CO Member No.: 5,280 Region Association: Rocky Mountains |
The stock vacuum advance distributor offers more maximum advance. The problem is having a vacuum to actuate it. But it also offers some mechanical advance in addition.
The 009 is mechanical only, as I'm sure you are aware. But it will work just fine for your application. Alternately, you can use one of the numerous aftermarket options out there. Just put it together. If it runs, great. If it doesn't, then we'll still be here. |
|
|
|
| alpha434 |
Feb 26 2008, 09:21 AM
Post
#5
|
|
My member number is no coincidence. Group: Members Posts: 3,154 Joined: 16-December 05 From: Denver, CO Member No.: 5,280 Region Association: Rocky Mountains |
Also,
Vote for Mrs. K, or bad things will come of your carb conversion. |
|
|
|
| jr91472 |
Feb 26 2008, 09:49 AM
Post
#6
|
|
"I'm pacing myself sergeant..." Group: Members Posts: 1,205 Joined: 2-August 04 From: McKinney, TX Member No.: 2,437 |
FWIW
I was advised by a long time and well known 914 mech (here in DFW) that the stock 1.8L dizzy w/ vac advance connected was the best adv curve match (of stock dizzy's) for dual carbs. Part Number: 022 905 205 AA or AB. I eventually found such a dizzy and matched it with a Crane Allen Fireball ignition system and .....wow. All of my carb tuning issues virtually dissappeared. I have been running this for about 2 years without issue. I am a huge believer in the Crane Allen Fireball system. Super reliable. good luck (IMG:style_emoticons/default/beer.gif) |
|
|
|
| pete914 |
Feb 26 2008, 02:36 PM
Post
#7
|
|
Member Group: Members Posts: 178 Joined: 21-August 07 From: east coast Member No.: 8,025 |
Interesting, where are you hooking up the vacuum advance? Do IDF 40's come setup to do this?
|
|
|
|
| Brando |
Feb 26 2008, 02:49 PM
Post
#8
|
|
BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
Even without the vacuum advance and retard connected the stock 1.8 distributor will provide the proper amount of advance. On stockers the vacuum advance was disconnected because it gave way too much advance.
the 009 only provides a total of 22ยบ (not enough) and gets there way fast. You have to have a 009 modified (different weights and springs) to properly work with a Type 4 and your application. |
|
|
|
| jr91472 |
Feb 26 2008, 08:09 PM
Post
#9
|
|
"I'm pacing myself sergeant..." Group: Members Posts: 1,205 Joined: 2-August 04 From: McKinney, TX Member No.: 2,437 |
QUOTE(pete914 @ Feb 26 2008, 12:36 PM) Interesting, where are you hooking up the vacuum advance? Do IDF 40's come setup to do this? My Dell's have a vac advance port. |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th May 2025 - 02:31 PM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.