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Author
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Topic: Timing Lights
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grourown420
unregistered
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posted 03-28-2004 01:09 AM
 
Just curious on how to set my timing with a light. A friend of mine said #1 cyl has to be TDC, the rotor has to be pointing at #1 cyl, and the marks have to line up. My question is, what does it take for all this to come into play to line up everything? Don't know if I'm asking the right thing, so how do I set my timing with a light? 
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67nightmare
Gearhead Posts: 118
From: rose hill, ks, usa
Registered: Mar 2004
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posted 03-28-2004 02:28 PM
 
They way I have always set my timing with a light was to take some chalk or white-out and mark where you want it (e.i. 10 BTDC) and then put the battery hook-ups on the correct terminals then the other line runs to your #1 cylinder wire. Then fire it up and advance your distributor untill the mark you made lines up with the timing mark. Unless you have really screwed your timing up you shouldn't have to do any of the TDC stuff with the #1 cylinder.
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SteveLaRiviere
Administrator Posts: 42139
From: Saco, Maine
Registered: May 99
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posted 03-28-2004 05:58 PM
Also, remember to unhook and plug the vacuum line going to your advance diaphram before setting the timing.------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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grourown420
unregistered
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posted 03-28-2004 06:42 PM
Thanks guys, I dont think my timing is off that much, just gotta find the marks. OK, I know pretty much what to do now, just wanna say thanks again. 
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grourown420
unregistered
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posted 03-28-2004 10:11 PM
I have a 289 C4 with Headers and a 2bbl for now, so just outta curiosity, what is the normal setting? The best I could see on my wheel was 10 ATC up 30 BTC. Looked like the last guy had it right on 0, but it still has a miss. I have a Chilton book, but it just says to make sure whatever line I make lines up with the Marker. It also talks about Valve lash. Any comments on this? Thanks in advance.
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whiteknight289
Gearhead Posts: 1000
From: Wheaton, IL, USA
Registered: Mar 2004
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posted 03-30-2004 11:51 PM
A decent timing for your 289 should be around 10 degrees. Rotating the distributor towards the thermostat housing will advance it. If you advance too far, the engine will let you know by starting to run rough, it will be harder to start, and could ping under load (uphill acceleration).
You most likely have hydraulic lifters and you shouldn't need to worry about valve lash. If they are clattering, they are too loose. If they are too tight, it might hold the valves open slightly and you will have backfires. When setting your timing, the vac line going to the distributor shouldn't have any suction at idle. When you raise the RPM, vac comes up and advances your timing.
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grourown420
unregistered
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posted 03-31-2004 01:10 AM
Thanks you for that info, I was not looking foward to adjusting the valves. I'm gonna try what you said about the 10 degrees, man I hope that does it. I still have'nt taken it out for a run, everybody around here says it needs to be blown out. Waiting to get it reg and plated until it's running and starting without a problem. Thanks again whiteknight289, for your time and info.
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