[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference terri::cars_uk

Title:Cars in the UK
Notice:Please read new conference charter 1.70
Moderator:COMICS::SHELLEYELD
Created:Sun Mar 06 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2584
Total number of notes:63384

1686.0. "Setting Ignition timing." by NEWOA::SAXBY (Is Bart Simpson the Anti-Christ?) Thu Feb 06 1992 09:31

    
    Can someone tell me how to set the ignition timing on a car statically?
    
    I've got a timing light that I use for setting the timing usually, but
    since the Beast's been in bits I haven't got the timing anything like
    right yet and it won't fire up.
    
    So, how do I get it set up without having the engine running?
    
    Mark
T.RTitleUserPersonal
Name
DateLines
1686.1PLAYER::BROWNLDon't rate 'em meselfThu Feb 06 1992 10:0119
    Mark.
    
    Assuming that's all you want to know, ie. you've fitted the dizzy
    properly in respect of the cam timing:
    
    1) Rotate the engine until such time that the timing marks in the lower
       pulley are in the appropriate place.
    2) Look at the points, they should be open.
    3) If not; loosen the retaining nut on the dizzy.
       3a) Rotate the dizzy body until such time as the points are open.
           Bear in mind that the rotor arm should be pointing at the "lead"
              for the appropriate plug (probably 1).
       3b) Tighten the the retaining nut on the dizzy.
    4) Start engine!
    
    Laurie.
    
    PS. The Haynes manual for a car fitted with that engine should cover
        this. It's an Essex V6 isn't it?
1686.2NEWOA::SAXBYIs Bart Simpson the Anti-Christ?Thu Feb 06 1992 10:3413
    
    Yeah,
    
    I THOUGHT there was a way of using a light (on a wire) to ensure the
    timing was right. This dates back to my 18th year (a long time ago)
    when I did some car mechanics lessons. I never used the method, though.
    
    I'll try the way you describe (and, as you say, Haynes do) at the
    weekend.
    
    Thanks.
    
    Mark
1686.3Light workDOOZER::JENKINSAnother 'ken yearThu Feb 06 1992 11:1911
    
    Mark,
    
    If you make up a circuit using the points and a bulb, the bulb will
    glow all the time the points are closed. However, as soon as the
    points start to open the bulb will go out... which is a bit easier
    to see than points starting to open.
    
    Richard.
    
    
1686.4PLAYER::BROWNLDon't rate 'em meselfThu Feb 06 1992 11:463
    Except, you need the points fully open, not just a bit...
    
    Laurie.
1686.5Timing=When points START to open.CMOTEC::JASPERThu Feb 06 1992 12:057
    ...The spark is generated at the instant the points start to open,
    thats when the field in the coil primary collapses. The reason that the
    points must fully open (later) is to allow for full discharge of the
    ignition circuit.
    
    
    	Tony.
1686.7Corrected my diliberate mistake :-}GEM::KENNEDYVote Rab C. NesbittThu Feb 06 1992 13:2815
    ...and to make it even easier to use your light-bulb; just connect it
    ACROSS the points (with couple of croc clips) and rotate the crankshaft
    until the light just COMES ON. Check the position of the timing marks -
    adjust the distributor position if necesary and repeat until you get it
    as close as possible.
    
    Note that you will need the ignition switched on if you use this method
    so make sure the plug leads are off the plugs just in case something
    fires!
    
    I have found that on checking with a strobe afterwards that I usually
    get the static timing to within two degrees or so using this method.
    
    - John.
    
1686.8or...LARVAE::LINCOLN_JThu Feb 06 1992 13:4023
	Fancy you not knowing this!
	
	Or try this -

	1. Make sure No 1 cyl is at TDC (marks will line up 180� opposite
	too) and align timing mark.

	2. Remove distributor cap to prevent engine accidentally firing.

	3. Turn on ignition, and turn on radio full volume tuned to
	a non-existant station.

	4. Centralise the 'micrometer' adjustment thingy on the distributor.

	5. Rotate distributor body from where the points are closed towards
	where they open. At the point they open a loud click will be heard 
	from the radio, and thats where it needs to be.

	6. Susequent dynamic tuning can then be done using the micrometer
	adjuster.

	-John

1686.9and...LARVAE::LINCOLN_JThu Feb 06 1992 13:435
	And if the distributor has been removed or timing chain off
	then the distributor needs to be fitted such that the arm
	points to No 1 cylinder when 1 is at TDC as the first step.

	-John
1686.10:^)NEWOA::SAXBYIs Bart Simpson the Anti-Christ?Thu Feb 06 1992 13:464
    
    What radio?
    
    Mark
1686.11LARVAE::LINCOLN_JThu Feb 06 1992 13:482
	The radio in the calibra. AM of course, old cars don't radiate
	encoded FM.
1686.12Ho Hum.SUBURB::SCREENERRobert Screene, UK Finance EUCThu Feb 06 1992 18:321
    
1686.13BEWARE THE 180 degree out FAIRY :^DCMOTEC::JASPERFri Feb 07 1992 13:424
    ... and always time the car by turning the engine the right way, there
    is a lot of slack in the timing path. When checking that the
    distributor rotor points to the plug lead #1, also check that both
    valves are closed for that cylinder when at TDC.