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| Timing marks https://www.slantsix.org/forum/viewtopic.php?t=67338 |
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| Author: | valleyguy [ Fri Jul 14, 2023 12:13 pm ] | ||
| Post subject: | Timing marks | ||
Dumb question, but where is -2.5 degrees BTC on this damper? I've marked the "0" line but need to set to factory specs. I'm assuming BTC has to be to the left of that line for BTC; ??
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| Author: | MadScientistMatt [ Sat Jul 15, 2023 7:28 am ] |
| Post subject: | Re: Timing marks |
2.5 degrees ATDC would be at the bottom edge of that; the numbers are positive degrees BTDC. |
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| Author: | Rick Covalt [ Sat Jul 15, 2023 7:56 am ] |
| Post subject: | Re: Timing marks |
Why are we running at ATDC? It should run better with at least a few degrees before. |
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| Author: | hank2 [ Sat Jul 15, 2023 10:00 am ] |
| Post subject: | Re: Timing marks |
I'm not used to looking at the driver's side mount timing tab, but 2.5 degrees BTDC would be half way up between the 0 TDC and the first line up (5 deg mark). Not? |
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| Author: | valleyguy [ Sat Jul 15, 2023 11:06 am ] |
| Post subject: | Re: Timing marks |
Thats what I thought as well; I need -2.5 degrees BTDC... NOT ATDC |
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| Author: | MadScientistMatt [ Fri Jul 21, 2023 12:21 pm ] |
| Post subject: | Re: Timing marks |
I read your request as negative 2.5 degrees BTDC, hence positive 2.5 ATDC, sorry. |
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| Author: | DadTruck [ Fri Jul 21, 2023 7:16 pm ] |
| Post subject: | Re: Timing marks |
You do realize that the OE factory tune up specifications will not necessarily give you the best: emissions, drivability or performance today. Todays gasoline is much different from what it was 40 or 50 or 60 years ago. Your engine, due to age and wear is also likely much different from when it was new. Most nearly stock old engines will run better with a bit more ignition advance than what is specified back when they were new. |
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