|
|
|
Re: replacement vacuum adv. unit
[Re: JS23U]
#1405987
03/25/13 07:58 PM
03/25/13 07:58 PM
|
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
|
I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
|
Quote:
STANDARD VC187
ADVANCE STARTS 10.5
MAX ADV 8 DEGREES -10.5
15.5 HG
Shouldn't the max adv be 18 degrees?
Can anyone confirm that these replacement canisters are adjustable?
if it says 8 deg max advance, that would be 16 crank degrees. My understanding is that the cans with the "hex" housing end are adjustable
|
|
|
Re: replacement vacuum adv. unit
[Re: torkrules]
#1405988
03/25/13 08:21 PM
03/25/13 08:21 PM
|
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
|
Yes I'd want someone who has physically seen the # on a VC187 like my parts house saw 10L on a VC 188 since the printed material seems to be so bogus/inconsistant. I think the ones (Prestolite?) with the hex nipple can be unscrewed & washers added to slow the start of the curve, not sure how to bring it in earlier (weaker spring?). All the ones with the regular nipple I've ever checked the slope (not the total which is the # on the arm)) can be adjusted with a 3/32" allen wrench.
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: replacement vacuum adv. unit
[Re: RapidRobert]
#1405989
03/26/13 09:15 PM
03/26/13 09:15 PM
|
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
|
I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
|
Quote:
Yes I'd want someone who has physically seen the # on a VC187 like my parts house saw 10L on a VC 188 since the printed material seems to be so bogus/inconsistant. I think the ones (Prestolite?) with the hex nipple can be unscrewed & washers added to slow the start of the curve, not sure how to bring it in earlier (weaker spring?). All the ones with the regular nipple I've ever checked the slope (not the total which is the # on the arm)) can be adjusted with a 3/32" allen wrench.
Yes the older style can, like those used on dual point dist used shims to adjust the rate. The ones like the VC187 adjust with an allen key.
I actually bought on today. It is stamped 9L meaning it has 18 degrees crank advance. I actually have a Sun 400 distributor machine that I just rebuilt. It has a vacuum pump with a regulator and I mapped the curve from 10" hg to 20" hg. This was done with two and a half turns counter clockwise on the adjuster. I'll try to post it shortly. As I recall it was about 7 degrees advance at 17"
|
|
|
Re: replacement vacuum adv. unit
[Re: RapidRobert]
#1405991
03/26/13 10:16 PM
03/26/13 10:16 PM
|
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
|
I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
|
Quote:
Alright so for totals we have 10L (20 crank) on the VC 188 & 9L (18 crank) on the VC 187  . Seems closer than I would expect em to be 
Too bad there's not an 8L
|
|
|
Re: replacement vacuum adv. unit
[Re: torkrules]
#1405992
03/28/13 01:52 PM
03/28/13 01:52 PM
|
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
|
I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
|
Quote:
Quote:
Yes I'd want someone who has physically seen the # on a VC187 like my parts house saw 10L on a VC 188 since the printed material seems to be so bogus/inconsistant. I think the ones (Prestolite?) with the hex nipple can be unscrewed & washers added to slow the start of the curve, not sure how to bring it in earlier (weaker spring?). All the ones with the regular nipple I've ever checked the slope (not the total which is the # on the arm)) can be adjusted with a 3/32" allen wrench.
Yes the older style can, like those used on dual point dist used shims to adjust the rate. The ones like the VC187 adjust with an allen key.
I actually bought on today. It is stamped 9L meaning it has 18 degrees crank advance. I actually have a Sun 400 distributor machine that I just rebuilt. It has a vacuum pump with a regulator and I mapped the curve from 10" hg to 20" hg. This was done with two and a half turns counter clockwise on the adjuster. I'll try to post it shortly. As I recall it was about 7 degrees advance at 17"
Here is the graph of the advance VS vacuum
|
|
|
|
|
|
|
