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| Timing advance https://www.slantsix.org/forum/viewtopic.php?t=33121 |
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| Author: | Force Fed Mopar [ Sat Jan 03, 2009 4:11 pm ] |
| Post subject: | Timing advance |
My S6 seems to be advancing weird, it'll stay at the initial 15 until around 1500 or 1800 I guess (no tach), then it'll suddenly go way up. It's the same w/ or w/o the vacuum advance hooked up. Think it's a spring issue, or the vacuum pot not working? I got the dizzy out of a '78 truck, but I think it's a replacement or reman, so no telling what it's actually got in it. I have another reman dizzy here at home, has a green light spring, light brown heavy spring and the vacuum advance arm has 11.0R on it. Sound like it should be right? I have a orange light spring and a green heavy spring out of a points distributor, would they work better maybe? The engine is a solid cam engine w/ a factory 2bbl intake and exhaust manifold, no cat and a turbo muffler, running on a Holley 2280 carb and a MP orange ECU. |
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| Author: | Eric W [ Sat Jan 03, 2009 8:22 pm ] |
| Post subject: | |
Sounds like the weights in the distributer may be sticking. I always use some Sly-glide grease when I have the dist. apart on the posts where the weights sit and where the guides on the weights slide in the governer. |
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| Author: | Reed [ Sat Jan 03, 2009 8:34 pm ] |
| Post subject: | |
Ditto. Take it apart and lube the springs and weights. If you don't have any grease, a good soak with a penetrating lubricant like PB Blaster or Knock 'Er Loose (NOT WD-40) will work too. To really set a distributor up right you need at the minimum a tach. It could be that your light sring is so light that it is "all in" at idle and the heavy spring doesn't start advancing until 1800 RPM. But again, you need at least a tach, and a vacuum guage and external vacuum source (hand held pump) are very very helpful in setting up a distributor. |
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| Author: | KBB_of_TMC [ Wed Jan 07, 2009 9:21 am ] |
| Post subject: | |
Err, a dum question - why not WD-40? |
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| Author: | Reed [ Wed Jan 07, 2009 9:32 am ] |
| Post subject: | |
WD-40 (a) is not a penetrating lubricant and (b) doesn't do a good job lubricating. WD-40 sort of sits on the surface and just collects dirt and crap and forms a gritty paste. It might work short term, but the othe products listed are true penetrating lubrcant, cost the same as WD-40, and work better. But Eric's suggestion of using true grease is the best idea. |
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