Timing Issue Interesting situation. I had overheating issues which I'm sure led to a blown head gasket. Did some surgery: installed a new HC head with graphite head gasket, and a new heavy duty radiator. Since she was apart, I also replaced the chipped macerated timing gear with an aluminum timing gear, and a new ratchet nut on the crankshaft. Timing was fine before blowing the head gasket. With the new HC head, even though timing is solid and engine runs great at low idle through 50+mph, my timing stays at full retard position. Starts up right away and I never need to advance the timing through top speeds. When we put the new timing gear on, never could find a mark on the crankshaft gear, so we marked where the teeth came together and went off that. Timing gear issue? Distributor issue? Or is this normal with a HC Head? Doesn't seem right to me.
Appreciate any thoughts or ideas. |
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The timing mark on the crank gear should be on the tooth that is aligned with the right side of the keyway, as viewed from the front.
How were your gears aligned? . |
Re: Timing Issue If you're finding little difference in manual set of timing - something else is "sub-optimal."
Methinks the issue may be in your timing gear match. The engineering startup world on finding difficulties says "look to the differences or unknowns for issue resolution." You've said you were not sure of match mark alignment. This is an unknown. Other differences (gear, head, gasket) are not - or proved out inconsequential. Joe K |
Re: Timing Issue doubtful its the head as i ran a 7-1 for years with no trouble . my guess is the timing gears are not correct ..........
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Re: Timing Issue hc head has nothing to do with timing!
and if you are running your timing in the retard position all the time, it will continue to overheat!!!! |
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Re: Timing Issue Just goes to show how forgiving these engines are. Timeing is crucial for power and temp control.
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Re: Timing Issue Could the crank gear be on backwards?
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Re: Timing Issue Some crankshaft timing gears are marked on the tooth with Ford script .
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Re: Timing Issue Like 1955 said. I'm also thinking your issue is the cam gear installation. Where you lined up or marked the gears doesn't mean that much. I'd recommend checking the alignment as 1955 showed. Its all lot rework, but,,,,,,,,
All that said, does your spark lever linkage work correctly ? Full retard the arm should be at one side of the window and full advance should be at the opposite. |
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As to the spark lever linkage, it is full contact from retard position to full advance. I had to purchase a NuRex adapter and cut the linkage to expand all of the way since the new linkages are too short (even from Bratton’s!) |
Re: Timing Issue Well if your friend the marks are aligned correctly, then it should be OK. My question was how it could be correct unless you got lucky. Just marking the timing gears is a real crap shoot.
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Re: Timing Issue If the dimple is on the back side, turn it around so it will be easy to time correctly.
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I used a HF gear puller, which is all I had at the time, and heat....the engine was on a stand. As it was I ruined the old gear but had a new one ready. You probably ought to have a replacement. Do you have a picture of your current setup? |
Re: Timing Issue I'm thinking you could find the cam gear dimple with the timing pin, as normal, and then visually check the #1 piston for TDC by looking through the spark plug hole. If you need to turn the engine either way to bring the piston to the top then something is not right.
This might tell you how far off you are, if at all, and whether your current timing is retarded or advanced.... |
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Re: Timing Issue Just remove the timing gear cover and take a look.
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