509cid Whippleengine boost and timing?
11-18-2017, 11:51 AM
#11
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I would definitely add some timing in those cells. And I would do that before upping the boost pressure. I myself, would bump it to 30* there, and work up from there reading the plugs. It looks to me like youre bringing your max timing in too early. Id prefer a more linear curve. And of course make sure it is not LEAN. Lean engines do NOT like timing.
also bompa what are your running for ignition.
11-18-2017, 03:43 PM
#12
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I recall your running Daytona cd1 ign boxes and msd distributors but just curious what your timing is at when fully advanced. The other thing I was wondering about when running Daytona boxes are the weights removed or just locked. I need to get a little more educated on on those.
also bompa what are your running for ignition.
also bompa what are your running for ignition.
11-24-2017, 02:32 PM
#13
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I am running the Daytona ignitions. My timing, is proportionate to RPM, and Manifold pressure. It varies a bunch depending on those things. Maximum advance on the map I last used, at full boost/wot, was 33* from 5000-5500, 34 from 5500-6000, and 35 from 6000-6500. You do not want any mechanical advance in the distributor itself when using the box to control timing.
I wonder why the daytona distributors even bother with the weights and springs knowing it's primary use would likely be with their ign box. Do you lock out? Remove or what? Or am I missing something. I thought I recently came across a msd or some other distributor that was designed specifically for one of the msd boxes and Daytona. Basically gutless in a sense except for magnetic pickup.
Last edited by getrdunn; 11-24-2017 at 02:34 PM.
11-24-2017, 02:45 PM
#14
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Did you create your own map based on your manifold pressure, boost, rpm's etc or was there a specific preset option that was close to or spot on to your needs. I'm looking forward to getting my Daytonas and will likely have some questions but have heard nothing but good about them. Reminds me a lot like the power commander ign box I used on my efi fx800 sled. Very user friendly once I got use to it and fun to mess with different curves etc based on temps, snow conditions an so on.
I wonder why the daytona distributors even bother with the weights and springs knowing it's primary use would likely be with their ign box. Do you lock out? Remove or what? Or am I missing something. I thought I recently came across a msd or some other distributor that was designed specifically for one of the msd boxes and Daytona. Basically gutless in a sense except for magnetic pickup.
I wonder why the daytona distributors even bother with the weights and springs knowing it's primary use would likely be with their ign box. Do you lock out? Remove or what? Or am I missing something. I thought I recently came across a msd or some other distributor that was designed specifically for one of the msd boxes and Daytona. Basically gutless in a sense except for magnetic pickup.
