 |
|
|
 |
|
|||||||
| Register | Blogs | FAQ | Members List | Social Groups | Calendar | Mark Forums Read | Premium Memberships | Auto Loans |
 |
|
|
Share |
| Thread Tools | Display Modes |
07-18-2003, 07:21 AM
|
#1 (permalink) |
|
Registered User
Join Date: Apr 2002
Member # 11072
Location: Denver, CO
Posts: 2,043
|
of Dizzy's and Timing Chains
Does anyone know the advance range of the vacuum style distributors? I have been getting the dreaded out of time symptoms,(feels almost like 20deg off) and low and behold, if I pull the line off, it runs!
Just trying to get a guestimate before I panic. I could deal with 6 or so degrees of chain slack, but bunches, well thats bad. j
__________________
forgings design dot com metal furniture | fabrication | decor new | rustic | recycled |
|
|
|
07-18-2003, 09:31 PM
|
#3 (permalink) |
|
Registered User
Join Date: Aug 2002
Member # 13412
Location: Chawlston
Posts: 1,773
|
The only info I can give you is for the low and high CR 3.9's in the 94-95 Disco's...however, the specs should be the same as the 3.9 was used in the Disco's overseas since '90 (???)...
All vacuum disconnected, at idle: 2 deg BTDC - low CR 4-5 deg BTDC - high CR Centrifugal advance between 1400-2200 rpm, vacuum disconnected: 6 - 8 deg advance so timing should be: 8-10 deg BTDC - low CR 10-13 deg BTDC - high CR And, of course, check to see if the vacuum diaphragm is working (and that the hose is on the "advance" side of the vacuum bell  ). Sorry, I can't find any info on the range of advance via vacuum in my shop manual.
__________________
Elitist Know-It-All |
|
|
|
|
07-19-2003, 05:43 AM
|
#4 (permalink) |
|
Registered User
Join Date: Apr 2002
Member # 11072
Location: Denver, CO
Posts: 2,043
|
Yeah,
I couldn't find it either. thanks Paul. I haven't even scoped it yet. I just find it amazing that the chain could have stretched so far in such short time. j
__________________
forgings design dot com metal furniture | fabrication | decor new | rustic | recycled |
|
|
|
|
07-19-2003, 01:08 PM
|
#6 (permalink) | |
|
Registered User
Join Date: Jun 2002
Member # 12499
Location: In a Snap-On truck tryin' to make it pay
Posts: 10,544
|
Quote:
__________________
Wrenchin' to riches! If you want peace, prepare for war. |
|
|
|
|
|
07-21-2003, 11:27 AM
|
#7 (permalink) | |
|
Registered User
Join Date: Apr 2002
Member # 11072
Location: Denver, CO
Posts: 2,043
|
Quote:
Well, i found that the timing was about 6 degrees off. But the moral of the story is NEVER assume. I figured that there couldn't be anything wrong with the other ignition components since they were under a year old. Well, I reset the timing and off I go to the mountains. Starts running worse under more load (19% grade). Pull cap-n-rotor in lot, and find that the rotor is scarred, and the contacts are all scarred. Not worn down mind you, just cheap ass arc material. Also found a arcing coil wire with my finger... (ouch) under load, (simulated by having cohort load up the torque converter). Never ever assume.... j
__________________
forgings design dot com metal furniture | fabrication | decor new | rustic | recycled |
|
|
|
|
|
«
Previous Thread
|
Next Thread
»
| Thread Tools | |
| Display Modes | |
Linear Mode
|
|
All times are GMT -7. The time now is 03:15 PM.