["QUICK-SILVER"]

Originally Posted by HWYSTR455

Ok, you can't set initial and total without changing the bushing in the distributor, period. Just need to point that out. When I checked the timing last it was at 1000 rpm, I blipped the throttle a little to make sure the timing wasn't varying, so was pretty confident initial was 12.

What's initial at now?

You say the engine wasn't happy at 12 initial? What were the symptoms that made that determination? I'm curious.

.

32° total @ 3,500 rpm's. 15° initial.

That goes right with your earlier post on total and distributor advance.
34°-18°=16°
Should be golden and plenty safe enough for a pump gas street engine.

Clay

[HWYSTR455]

Originally Posted by "QUICK-SILVER"

32° total @ 3,500 rpm's. 15° initial.

That goes right with your earlier post on total and distributor advance.
34°-18°=16°
Should be golden and plenty safe enough for a pump gas street engine.

Clay

That's assuming it's fully advanced at 3500 rpm. That depends on the springs, and total may not come all in until say, 4000, or even 4500. If that were the case, for example, IF at 3500 you only have 15 degrees, add 3 more degrees to that 16 initial.

When I first got there on the day I visited, the rotor was at least half way between the #1 post on the cap and the #8. It had to have been like 15-20 initial, if not more.

Anyway, my original point was, you set initial timing at idle, and not just set max/total and let initial fall where it may. THEN you rev it up and make sure it's not exceeding the max target timing. But in this case, it's pretty clear that since it has the 18 degree bushing, total is not going to be off by much.

EDIT: When I say 15-20 degrees, I mean 15-20 degrees ABOVE the 12 initial.

.

[Va68goat]

tom s,
Uh oh...I'll do my best. The rockers are 1.65 Crowers. I don't think anyone can answer a dyno question except Paul but I'll do my best!

[Formulajones]

I agree Clay that is generally a safe starting point. Some of these engines however sometimes don't want or need a bunch of initial timing. Since this has modern combustion chambers and tight quench, and enough compression to support the camshaft, it's probably pretty efficient and may not need that much initial.

The fact that Highway knocked it down to 12 and set the idle at a normal setting and stated the noise was somewhat subsided tells me he was likely heading in the right direction and is what I mentioned should have been done about 10 pages ago LOL