69 TI Distributor
To remove the pole piece and magnetic pickup assembly in a 69 TI distributor, do I have to remove the distributor from the engine first or can I pull those off/unscrew and remove from the distributor with the distributor still installed?
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Re: 69 TI Distributor
Yes, you must remove the distributor for disassembly. The mainshaft is removed from the housing to change parts. It cannot be done in the car, the steps include removing the distributor drive gear, washers etc. Here is an example write-up of disassembly:
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Re: 69 TI Distributor
Ugh! I was afraid of that. Thanks Don. Since it's now going to be out, is there anything I should consider doing with it/to it while it's removed?Comment
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Re: 69 TI Distributor
Well as long as it is in good shape, no defects/corrosion/bad tach gear etc, there isn't much needed done as the lower bushing is lubricated by engine oil and the upper bushing has a semi-permanent lubrication (packing in the distributor housing cavity around the bearing has 20W oil), you inspect the upper bushing by removing the plastic seal but you'll need a new seal. Of course inspect the tach drive housing, gears, clean and re-grease etc. Check the mainshaft end clearance, should be 0.002-0.007" so add/remove shims as needed. They are pretty simple to work on just don't lose any parts especially that small c-clip that holds the magnet assembly. There are good photos and assembly instructions in the Chassis Service Manual, good luck!Comment
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Re: 69 TI Distributor
Carefully remove the upper grease well seal as you will likely have to reuse it as the replacement is just a generic nylon washer. Search for a thread started by me in Dec. '12. L-79 distributor blueprint overhaul. The TI distributor is basically the same as the single point. The assembly/disassembly procedure is in your COM, and is very simple. Before removing the dist. index the engine at the initial timing point #1. The rotor should be pointing about 20 deg. right of engine centerline. Note that as you remove the dist. the rotor will rotate CCW and be about on engine centerline when the gears clear. This is you initial position to reintall. If you need to tweak the oil pump drive a paint mixing stick works well. Once the dist. is seated line up the stationary and rotating pole pieces. This will place the timing within a couple of degrees of the correct initial - where to set the balancer notch on the tab. I'm amazed at how many guys just pull out a dist. without knowing where the engine is indexed. Then they can't figure out how to properly install it again. It helps to plan ahead.Comment
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Re: 69 TI Distributor
I thank you guys for the advice. Question for Duke -- are the best/lightest springs for replacement on the vacuum advance still the gold ones in the Mr. Gasket 928G kit? And suitable for '69 L-89?Comment
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Re: 69 TI Distributor
Correct seal is available from CC & Zip.Comment
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Re: 69 TI Distributor
The centrifugal springs have nothing to do with the VAC. I'm not sure whether silver or gold are the lightest. They are pretty close, and I don't have a set to test. Perhaps you could. The OE L-71 max centrifugal, 30 @ 3800, is more aggressive than the L-72, 30 @ 5000, so L-71 may not tolerate a more aggressive than OE curve, but it depends on the actual CR of your engine, which I have no idea of and I doubt you do either, but measuring the thickness of the installed head gaskets can give a clue. I recall the OE shim gasket it .028". If you convert to full time vacuum advance install a B26 VAC. The OE 201 15 does not pass the Two-Inch Rule.Comment
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