Posted By: cudaboone
TOTAL ADVANCE-WHAT RPM - 06/15/10 12:44 PM
When setting total advance, what rpm should it be set at?
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How do you know all this stuff?
It is a 528 hemi. 10.75 Compression
comp roller cam installed @110.0. valve timing @ .050 Int: open open 14 close 54. exh open 54 close 14
gross valve lift .604 intake .585 exhaust.
tappet lift 286 286
1050 holley dominator.
5 speed trans.
Indy cylinder heads.
What will cause detonation? Too much advance or not enough advance?
Non vacuum MSD distributor.
If anyone has a 528 similar, what is your setting at 850 RPM? What is your total advance?
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Everybody needs a place to start , right? Why not a 528 hemi DREAMCAR.
It will start fine with the MSD device. the retard only happens during crank. once lit the carb should choke and high idle out of the crank. Hot the high idle wont be an issue it seems to be above 800rpm.
They sell 1" carb spacers with ports for pvc and brake booster.
Quote:Got the parts from FOB. Believe it or not, i took the dist out, took it aprt and installed the 10 deg bushing. Had to do a little filing, it so big. Don at FOB told me what to do. Haven't had a helper yet to try and set it at 32 deg total. Did set idle (about 900 RPM) at 22 and it seems to like it there.
Have you taken off the distributor cap , or switched advance springs on the weights? Have you ever built a engine yourself?
MSD has a bushing on a peg , controls the total advance amount by how much the weights fly out , adjusts with bushing thickness. 4secondsflat.com sells the part. Don, is a nice guy to seek addvice. Some limiter bushins should come with the MSD unit.
AT 22 initail it will start harder hot. At that level you need a MSD starter retard device. This retards the ignition 10-25 degrees while cranking. So 22 initial will start hot like it was 12. It will crank hot like the spark plugs are out. This saves your starter and flywheel big time.
http://www.summitracing.com/parts/MSD-8984/
One concept you should be familiar with . An engine requires different timming at WOT than at cruise. A vacuum advance usually conrols additional advance past the total mechanical to relax the beast at road speed.