Shamrock GS
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| posted on 25/11/07 at 08:06 PM |
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Pinto timing advice
I am looking for words of wisdom on pinto timing. I have a 2l engine, twin 40 webers and a lightened flywheel, electronic ignition.
What would be the appropriate timing settings?
Currenty the engine runs well but is overheating and I suspect the timing may be at fault.
I have done a search on this but the many answers dont quite fit!
Gary
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
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meany
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| posted on 25/11/07 at 08:18 PM |
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have you first checked for an air lock?
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Mr Whippy
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| posted on 25/11/07 at 08:20 PM |
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Does it pink when under load? a sure sign the timing is out. Going by what you said you've done, none of it would make me go from the original
setting. If it ran on after being switched off or was cooking the spark plugs i.e. they look very white and clean then I say it was the timing, if not
I'd rather go for an air lock in the head, especially on a 7 since the rad is so low. I think mines at 8 deg but I'd have to check for
sure. Try putting high octane fuel in and see if that cures it, mine never liked cheep unleaded stuff. Pinto's are pretty tough anyway.
tut see someones beaten me to it. God its she still missing, haven't looked at the news in a while.
Try jacking the front of the car right up high and then run the car on idle to try and get the air to come out, if it's there.
[Edited on 25/11/07 by Mr Whippy]
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Shamrock GS
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| posted on 25/11/07 at 09:04 PM |
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Thanks for this - the airlock may be an issue but I can't find a way to get it cleared. There isn't anything coming out hf the outlet
between the carb inlets - does that suggest air in there?
G
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
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jos
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| posted on 25/11/07 at 09:33 PM |
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run it up to temperature and then feel how hot the bottom hose is
then feel how hot the bottom of the rad is
then the middle of the rad
then the top
if theres any diference in temps then youuve got an airlock problem. if no diference try the top rad hose last and it will probably be cooler and
will point to an airlock problem which will not be cured by adjusting the timing
.: Motorsport / motor racing circuit / track wall art Apex Traxs :.
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britishtrident
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| posted on 26/11/07 at 11:31 AM |
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If the timing is too retarded you will get really bad over heating.
Advance the ignition until you get audible pinking when pulling hard from low RPM in a highish gear (best tested for when climbing long gentle slope).
When you find this point retard the ignition until you find the point where the pinking just stops, then retard it a tiny bit more for safety., thois
should be the ideal setting.
[Edited on 26/11/07 by britishtrident]
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britishtrident
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| posted on 26/11/07 at 11:38 AM |
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quote:
Originally posted by jos
run it up to temperature and then feel how hot the bottom hose is
then feel how hot the bottom of the rad is
then the middle of the rad
then the top
if theres any diference in temps then youuve got an airlock problem. if no diference try the top rad hose last and it will probably be cooler and
will point to an airlock problem which will not be cured by adjusting the timing
Bottom of rad will always be colder than the top. However if the coolant isn't circulating for any reason the bottom hose will be at or near
ambient temperature.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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