Installing a distributor. - Team Camaro Tech
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post #1 of 3 (permalink) Old Mar 26th, 03, 07:41 PM Thread Starter
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Join Date: Jun 2002
Location: Spanaway, Wa. usa
Posts: 64

If you brought your rotor to the #1 cylinder, TDC on the intake stroke and dropped in the distributor, what would be the difference of putting it in on the exhaust stroke TDC with the rotor on #1 ? Would the engine react differently ? I apologize if this is a really dumb question...

'67 Camaro rs, L30-327/275.
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post #2 of 3 (permalink) Old Mar 26th, 03, 09:55 PM
Join Date: Feb 2002
Posts: 124

The #1 cylinder would fire with the exhaust valve open. It would backfire among other things. Not sure if it would run at all as I've not tried it. Easy way to check that you are on the compression stroke is to remove the spark plugs, put you finger over the #1 spark plug hole and rotate the engine. When you are at TDC and air is forced out you are ready to drop in teh dist. Of course you could also yank the valve covers off.
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post #3 of 3 (permalink) Old Mar 27th, 03, 05:26 AM
Join Date: Dec 2001
Posts: 955

As ramcda said, rotate, the crank until you are TDC on the compression side of the stroke on the number one cylinder. If you have an old distributer cap, this next tip will really help to set up your static timing. Using a dremel or other moto tool, cut out the plastic under the number one cylinder on the cap. Place the cap on the distributer and scribe a mark at number one on the distributor base and then remove the cap. Hold the distributor over the hole and rotate the body so the vacuum advance is pointing toward the number two cylinder. Now, rotate the shaft counter-clockwise about 30 degrees from the number one firing point as scribed on the base. Place the distributor in the hole and allow the gears to engage and the shaft to rotate clockwise. If the distributor does not seat all the way, it means that your oil pump drive shaft is not aligned properly. Remove the distributor and using a long flat blade screwdriver, rotate the shaft clockwise or counterwise a little bit and reinsert the distributor the same way. When the shaft is in the proper location the gears will engage and the roll pin in the distributor gear will fall into the slot in the oil pump drive shaft. Do not force this part. You may have to do it several times to get the distributor oriented properly. Once you have the distributor in, place the cap on it and rotate it to align the rotor with the number one firing terminal by moving the base and then rotate the distributor clockwise just a pinch to approximately 5 degrees BTDC. If you have to move the base so far that the vacuum advance module interferes with the rocker cover or the manifold, start all over again and turn the shaft a little more clockwise or counter-clockwise until you get the proper orientation and he rotor is about 5 degrees BTDC. Tighten the distributor hold down and then put on the new rotor and cap. Hook up your plug wiresin the proper locations. Hook up your vacuum advance and viola. If you follow these instructions your car will start immediately. You can then unhook your vacuum advance, hook up your timing light and set the advance to the recommended factory or cam specs. I know this a little long but I tried not to leave anything out. Good Luck
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