XJ40 ( XJ81 ) 1986 - 1994

aj6 ignition timing curve ?

 
  #1  
Old 01-10-2019, 03:53 PM
Junior Member
Thread Starter
Join Date: Sep 2018
Location: uk
Posts: 16
Likes: 0
Received 6 Likes on 4 Posts
Default aj6 ignition timing curve ?

Following on from my twin engined car engine dating fun , i am trying to find out what the stock aj6 ignition timing curve is ,with or without vacumm , i am not fussy .

I am guessing it at around 12 d tickover, plus whatever vacuum advance jag put in there ,and around 28 to 32 d max advance ,again plus vac . if anyone out there knows the actual numbers , that would be very helpful . i am running on lpg , and the way i can create the right curve is to refer to the original ,then modify it .

i know there is an advancing kit one can buy , the amount of advance would be handy to know too ,so i can see what these engines can actually tolerate in the real world .


thank you ,
regards
robert
 
  #2  
Old 01-12-2019, 10:07 AM
jerry_hoback's Avatar
Veteran Member
Join Date: May 2007
Location: Michigan City, Indiana
Posts: 1,845
Received 386 Likes on 317 Posts
Default

I think I found some info for you- the engine management system diagnostic pdf (available for download) says 10d in N at 700rpm and 16d in D at 580 rpm. There is also other info there you may want to see if you don't already have it. Since its ignition is all computer controlled, I think any vacuum advance would be through sensors instead of actual.... Hope that is of some use. Good luck.
 
The following users liked this post:
Don B (01-20-2019)
  #3  
Old 01-12-2019, 02:40 PM
Junior Member
Thread Starter
Join Date: Sep 2018
Location: uk
Posts: 16
Likes: 0
Received 6 Likes on 4 Posts
Default

thanks Jerry , i will have a look for it .
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
NJ2003XJ8
XJS ( X27 )
15
05-05-2017 10:01 AM
ProXJS
XJS ( X27 )
10
04-20-2017 06:02 PM
jimmiejag
XK8 / XKR ( X100 )
10
07-29-2014 07:31 PM
calvindoesntknow
XJS ( X27 )
8
04-23-2013 05:22 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: aj6 ignition timing curve ?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: