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Distributor recurve question.

Posted: Sun Jun 12, 2005 11:02 pm
by dbrick
69 2000, was a smog car. OK, did the recurve, have the springs and weights in the right place, as far as I can tell, slight preload on both. No matter what I do, I don't really get the rotor to "snap back" when turned against spring pressure, seems a bit floppy. Car runs, but doesn't advance much when accellerated. Breaker plate is a little sticky, but rotates fine.

Base timing set to the third small line clockwise from the large line, should be 15 BTDC?

I overanalyzed the hell out of it for a while, but can't seem to find anything wrong, although now I can remove disassemble re assemble and install a distributor in an amazingly short time.

Any suggestions anyone?

Posted: Mon Jun 13, 2005 5:56 pm
by oilleak
It should have a little "free play" in it before the springs put tension enough to "snap back". Your initial advance is 15 degrees. The recurved distributor has another 15 degrees in it so by the time you're up to 3000 rpm you should be at 30 degrees total advance - ie, well off the scale on the pulley. Time it without the vacuum advance hooked up. Be sure that the dist. cam can rotate freely on it's spindle (to the limit of the advance mechanism). I've seen them where the cam is bound on the spindle and it won't advance.

Posted: Mon Jun 13, 2005 10:21 pm
by dbrick
That could be it, I thought it was set with vacuum hose connected, which is a bit abnormal. Everything moves freely, so maybe reset with vac hose off will get it closer