AzBaja.com, Home of the VW Baja Bug  
Toggle ContentToggle Content
Toggle Content AzBaja Site info

Welcome Anonymous

Nickname
Password

Membership:
Latest: ecthemc
New Today: 0
New Yesterday: 1
Overall: 3567

People Online:
Members: 0
Visitors: 121
Total: 121
Who Is Where:
 Visitors:
01: Event Calendar
02: Baja Forums
03: Baja Forums
04: AMAZON.com
05: AMAZON.com
06: Baja Forums
07: Baja Forums
08: AMAZON.com
09: AMAZON.com
10: Event Calendar
11: AMAZON.com
12: Baja Forums
13: Baja Forums
14: Baja Forums
15: AMAZON.com
16: AMAZON.com
17: Baja Forums
18: AMAZON.com
19: Baja Forums
20: AMAZON.com
21: AMAZON.com
22: Baja Forums
23: Baja Forums
24: Baja Forums
25: Baja Forums
26: AMAZON.com
27: AMAZON.com
28: AMAZON.com
29: AMAZON.com
30: Home
31: Baja Forums
32: AMAZON.com
33: AMAZON.com
34: Baja Forums
35: AMAZON.com
36: Baja Forums
37: Baja Forums
38: Home
39: Baja Forums
40: AMAZON.com
41: AMAZON.com
42: AMAZON.com
43: AMAZON.com
44: AMAZON.com
45: Baja Forums
46: Baja Forums
47: Baja Forums
48: AMAZON.com
49: AMAZON.com
50: AMAZON.com
51: AMAZON.com
52: AMAZON.com
53: Pictures
54: AMAZON.com
55: Baja Forums
56: AMAZON.com
57: AMAZON.com
58: AMAZON.com
59: Baja Forums
60: AMAZON.com
61: AMAZON.com
62: Baja Forums
63: Baja Forums
64: Baja Forums
65: AMAZON.com
66: AMAZON.com
67: Baja Forums
68: AMAZON.com
69: Baja Forums
70: AMAZON.com
71: Event Calendar
72: AMAZON.com
73: AMAZON.com
74: AMAZON.com
75: AMAZON.com
76: AMAZON.com
77: AMAZON.com
78: AMAZON.com
79: AMAZON.com
80: AMAZON.com
81: Baja Forums
82: AMAZON.com
83: AMAZON.com
84: AMAZON.com
85: AMAZON.com
86: Baja Forums
87: Baja Forums
88: AMAZON.com
89: Baja Forums
90: AMAZON.com
91: AMAZON.com
92: AMAZON.com
93: Baja Forums
94: Baja Forums
95: Baja Forums
96: Event Calendar
97: Baja Forums
98: AMAZON.com
99: Baja Forums
100: AMAZON.com
101: Baja Forums
102: AMAZON.com
103: Baja Forums
104: AMAZON.com
105: Baja Forums
106: AMAZON.com
107: AMAZON.com
108: Baja Forums
109: Baja Forums
110: AMAZON.com
111: Baja Forums
112: Baja Forums
113: Baja Forums
114: Baja Forums
115: AMAZON.com
116: AMAZON.com
117: AMAZON.com
118: AMAZON.com
119: Baja Forums
120: AMAZON.com
121: AMAZON.com

Staff Online:

No staff members are online!

Toggle Content GPS

Baja Forums -:- VW Volkswagen Bug, Baja, Bus, Sandrail and Thing -:- VW Volkswagen & Baja Bug General Discussion -:- Vaccum unit
Amazon Store

Vaccum unit
Bug, Baja, Thing and Buggies. Most every thing that will not fit any any other area. See list of other Forums for better topic placement...Volkswagen General Discussion
Users browsing this topic: None
Post new topic Reply to topic Printer Friendly Page
View previous topic :: View next topic
Author Message
ajeden
Corporal
Corporal

ajeden

Joined: Jul 23, 2006
Posts: 113
Location: mexico
Karma: 0

Post Post subject: Vaccum unit
Posted: Tue Feb 13, 2007 05:26 AM
Reply with quote

Hi
Can anybody help me. I have just been checking my timing, which I had to adjust as the acceleration was garbage.
My VW is a bit odd. It had F.I, but now a carb, with a breakerless point distributor, which were installed before I got it. I have had both items replaced.
What exactly is the vaccum unit for, because with the timing light attached and the vaccum hose disconected and I rev the engine the timing mark moves, with the hose connected the timing mark moves?
Is the unit faulty? I always thought that the vaccum unit stopped the mark from moving.
Anyway, and help is appreciated.
Andrew from Mexico. Oh yes, my VW (vocho) is a '96

Back to top
View user's profile
VIN70
Sergeant
Sergeant

VIN70

Offline

Joined: Jun 16, 2006
Posts: 363
Location: Surprise
Karma: +1

Post Post subject: Re: Vaccum unit
Posted: Wed Feb 14, 2007 03:17 AM
Reply with quote

when you disconnect the vacuum line you are setting the timing for the centrifical advance inside your dist. then you reconnect the vacuum and time it again for the setting you want.

what is it timed at without vacuum? With vacuum?


_________________
"Before you start pointing fingers, make sure your hands are clean." - Bob Marley
Back to top
View user's profile
DONT
Master SGT.
Master SGT.

DONT

Offline

Joined: Sep 20, 2006
Posts: 2044
Location: GILBERT, AZ
Karma: +19

Post Post subject: Re: Vaccum unit
Posted: Wed Feb 14, 2007 03:37 PM
Reply with quote

ajeden wrote:
What exactly is the vaccum unit for, because with the timing light attached and the vaccum hose disconected and I rev the engine the timing mark moves, with the hose connected the timing mark moves?
Is the unit faulty? I always thought that the vaccum unit stopped the mark from moving.

W/vacuum disconnected-plugged, you are setting base idle. The timing moves due to mechanical advance built into the dist.

W/vacuum connected, you are setting total timing once the advance is "all in" for instance in a v8, you have 8 deg BTDC at idle; then 34 deg BTDC all in by 2500 rpm.

Hope that helps with your understanding. Cool


_________________
66 Baja Project, slowly making progress.
Back to top
View user's profile
ajeden
Corporal
Corporal

ajeden

Joined: Jul 23, 2006
Posts: 113
Location: mexico
Karma: 0

Post Post subject: Re: Vaccum unit
Posted: Wed Feb 14, 2007 08:37 PM
Reply with quote

Hi
Thanks for the replies.
So, with the vaccum pipe removed and pluged. once the timing is set using the light, if you rev the engine the timing marks stay still?
And with the pipe connected, and rev the engine the timing marks move, because the advance mec kicks in?
It's that my timing marks move, whilst reving the engine, with the pipe disconected and connected.
Is there a way to test the vaccum/advance unit.
Thanks

Back to top
View user's profile
DONT
Master SGT.
Master SGT.

DONT

Offline

Joined: Sep 20, 2006
Posts: 2044
Location: GILBERT, AZ
Karma: +19

Post Post subject: Re: Vaccum unit
Posted: Wed Feb 14, 2007 11:19 PM
Reply with quote

Yes it will move w/vacuum plugged, but not as much. That is the mechanical advance built into the dist..

When running, you can plug a vacuum pump into the nipple on vacuum advance and build vacuum, that will test the advance. Cool


_________________
66 Baja Project, slowly making progress.
Back to top
View user's profile
VIN70
Sergeant
Sergeant

VIN70

Offline

Joined: Jun 16, 2006
Posts: 363
Location: Surprise
Karma: +1

Post Post subject: Re: Vaccum unit
Posted: Wed Feb 14, 2007 11:26 PM
Reply with quote

with vacuum disconnected the mark will move until you are at full advance then it should stop even when bringing the rpms up.

on my car right now its timed at 28* without vacuum..it wont go past 28 with the vaccum line off. then i put the line on and time it again, adjust the vacuum and its at about 40*


_________________
"Before you start pointing fingers, make sure your hands are clean." - Bob Marley
Back to top
View user's profile
ajeden
Corporal
Corporal

ajeden

Joined: Jul 23, 2006
Posts: 113
Location: mexico
Karma: 0

Post Post subject: Re: Vaccum unit
Posted: Thu Feb 15, 2007 05:45 AM
Reply with quote

Hi Guys
Thanks a million. I think then my advance is not 100%
Will investigate further
Thanks again
Andrew

Back to top
View user's profile
Post new topic Reply to topic Printer Friendly Page

 Topics   Replies   Author   Views   Last Post 
Normal
No new posts VW Volkswagen & Baja Bug General Discussion 1966 VW Beetle Fuel Sending Unit Removal
Replacement Possible or Not
3 jemizasi 3183 1966 VW Beetle Fuel Se...
 Fri Apr 29, 2011 05:51 AM 
AzBaja View latest post
You cannot post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Toggle Content Picture Box

Toggle Content Great things to Buy

Toggle Content Other Sites

Toggle Content Parts - For your Car

If you see Errors please E-mail Eric (AT) AzBaja.com X XX XXX
azbaja.com Webutation

eXTReMe Tracker
XXXX
The logos and trademarks used on this site are the property of their respective owners
We are not responsible for comments posted by our users, as they are the property of the poster. Any use, commercial or educational, requires written permission from the author.
Interactive software released under GNU GPL, Code Credits, Privacy Policy