What comes first , idle or mixture

[WJL911]

Originally Posted by Bob Kontak

The SC maxes out at sub 3,000.

You are 8-9 degrees past max timing at 31.

You sure you know what you are doing?

Sorry to be a killjoy.

Just following Don's advice

[Bob Kontak]

Originally Posted by WJL911

Just following Don's advice

I think 30 is kinda ok with max octane. Scares me.

[WJL911]

Originally Posted by Bob Kontak

The SC maxes out at sub 3,000.

You are 8-9 degrees past max timing at 31.

You sure you know what you are doing?

Sorry to be a killjoy.

You are not a killjoy but If I knew what I was doing I would be asking questions here. The Bentley Bible says 21-25 at 6k, Bob is thinking 30 at 4k so Give me your numbers please.

W.

[WJL911]

Originally Posted by Bob Kontak

I think 30 is kinda ok with max octane. Scares me.

Actually have access to 93 min to 105 max octane.

[WJL911]

Many different threads on this and many different settings at different rpms Good discussion guys... lets keep it going, always good to hear everyones ideas.

Thanks
W.

[WJL911]

Originally Posted by don gilbert

Go to 2500 rpm in 3rd, slowly floor and listen for spark knock with windows up. If no knock, keep advancing until you can hear it, then back off just a tad. They are all pretty sluggish until around 3500 rpm. If sluggish after that, might need to check control press. to make sure your not to rich. Valve adj. no big deal. 4mm is pretty easy to gauge by feel. If the gap feels good, leave it alone. Main ones you are looking for are ones that are to tight

Thanks Don, will try that in a.m. I am running a mix of 50/50 (93/105 octane) most of the time it is 93 but I put alittle Avgas in this last time.

[Bob Kontak]

Originally Posted by WJL911

Thanks Don, will try that in a.m. I am running a mix of 50/50 (93/105 octane) most of the time it is 93 but I put alittle Avgas in this last time.

With octane "30" sounds ok..........I think.

Keep in mind my head is wrapped around the US 87 octane SC with the wimpiest advance one can imagine. 18-23 is the spec and there is not an official @6,000 number to reference, regardless of what folks say.

I have said previously go to 25 if you feel lucky. But I am Super Chicken.

I am on your side, trust me. I know I am leaving throttle response on the table.

[WJL911]

Originally Posted by Bob Kontak

With octane "30" sounds ok..........I think.

Keep in mind my head is wrapped around the US 87 octane SC with the wimpiest advance one can imagine. 18-23 is the spec and there is not an official @6,000 number to reference, regardless of what folks say.

I have said previously go to 25 if you feel lucky. But I am Super Chicken.

I am on your side, trust me. I know I am leaving throttle response on the table.

Thanks Bob for your comments. I too like to stay in the safety zone on somethings. yesterday I had a young guy pull up next to me on I-10 kind of egging me to take him on..... 20 years ago I'd been in the hunt. Today I just smiled and waved he gave me the thumbs up an away he went.

[don gilbert]

Every engine is different. Depends on everything from carbon build up, compression, fuel, engine temp, outside air temp. Hot summer time might have to back it down a little. Getting a little spark knock and then backing off timing is the idea way.

[tomgalloway1]

The Bosch Automotive Manual has the best explanations of all the fuel systems. The CIS on my old (dearly beloved) e21 would really push the fuel whenever asked.