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Distributor springs removal and replacement. Fairly easy to do.
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Posted by The Red on July 10, 1999 at 12:10:46 from (216.192.135.42):
One of the last projects on Corey's 51 H was to get a set of timing springs from Ken Updike. Bob Melville had sent me a quick Excel spreadsheet which showed TDC at 450 RPM and 40 degrees advancement at 1,800. My distributor was only advancing about 30 degrees so I ordered a set. Ken mistakenly sent two different sizes so I installed just one spring for the moment. Its has 7 coils and the coil diameter is basically 3/8 inch. The old spring had almost worn completely through at the hooks. I am now only about 5 degrees off. For ease of working on the distributor, take off the oil filter and housing to give yourself room.
First thing. Make a pencil mark on the distributor housing down by the adjustment bolt and a mark on the base so you know where to reset your timing.
After removing the distributor cap, rotor, and dust cover (if you still have it, unhook the wire on the post.
Remove the movable breaker point portion and the condenser. Take off the upper and lower dist. cap hooks. Those screws hold in the breaker plate.
Now rotate the distributor 90 degrees counter-clockwise. You have one more screw now at the bottom of the dist. housing to remove. Then you can pull out the breaker plate.
You will see a plate that covers the springs and weights. It is held in with 2 deep headed screws. Take that out and you can then easily remove the 2 springs and weights.
I had a lot of crud on the weights and the springs. Cleaning them obviously made a difference when I re-installed and fired up the engine.
Carefully look at the hooks on the springs for wear. My 2 are almost completely worn through. That explains why my timing is not advancing fully.
After you reinstall the weights and new springs, installing the cover plate is a tad tricky. Get it into position. Since the 2 screws are recessed into that cover plate, set you screwdriver blade horizsontal, stick on the bolt and washer and carefully glide your screwdriver in. I had little trouble hitting the recessed holes.
Re-insta
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