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Remove Vacuum Advance Arm from Plate
#1877855
07/25/15 02:16 PM
07/25/15 02:16 PM
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Joined: Jul 2003
Posts: 1,212 Canton, Ohio
Crazy68Dart
OP
pro stock
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OP
pro stock
Joined: Jul 2003
Posts: 1,212
Canton, Ohio
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All, trying to re-curve my distributor today on the 383. Is the vacuum advance arm pin peaned over? I can't seem to separate it from the vacuum advance plate. Is there a trick? I need to get it out of the way to get to the mechanical advance plate.
Thanks
383, Hemi 4-Speed, AlterKtion, D60
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Re: Remove Vacuum Advance Arm from Plate
[Re: Crazy68Dart]
#1877880
07/25/15 03:11 PM
07/25/15 03:11 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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OT I would suggest you finalize the initial with the vacuum gauge method then with that number in hand shorten the slots to get 38 total (initial+slots with can capped) then play with springs & mix and match any combo so that you are just under the pinging point at WOT up thru the gears on your hottest/driest day & no matter what RPM this makes the slots max out at. Use a pair of needle nose pliers to expand the clip to the point where it will come right up & out. lastly plug in/adj the can (if used) staying just under the pinging point in everyday driving under varying load/rpm conditions on your hottest/driest day & CCWmakes it come in later. On the springs you would wanna toss the heavy one with the elongated loop on one end. MP and mr gasket have kits of light ones
live every 24 hour block of time like it's your last day on earth
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Re: Remove Vacuum Advance Arm from Plate
[Re: Crazy68Dart]
#1877901
07/25/15 03:54 PM
07/25/15 03:54 PM
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Joined: Jan 2007
Posts: 570 USA
Hooligan
mopar
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mopar
Joined: Jan 2007
Posts: 570
USA
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Go to www.4secondsflat.com.For 20 bucks they have a nifty plate with several slots of varying degrees of advance that drops right into place once you have the distributor disassembled. Mine is on the way!
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Re: Remove Vacuum Advance Arm from Plate
[Re: Crazy68Dart]
#1877960
07/25/15 06:11 PM
07/25/15 06:11 PM
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Joined: Jul 2003
Posts: 1,212 Canton, Ohio
Crazy68Dart
OP
pro stock
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OP
pro stock
Joined: Jul 2003
Posts: 1,212
Canton, Ohio
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Thanks guys. I finished up a few hours ago. I have the billet accel distributor that has the screws for adjusting mech advance. I removed the purple spring (the heavy one) leaving on the light spring. Initial timing is 18 degrees, mech seems to be all in around 2400-2500 and it is right at 38 total, so adding 20 mechanical.
Tuning idle screws have about 19-20 in steady vacuum at about 950 RPM. Using vacuum advance hooked to manifold vacuum (i.e. not port) and it is adding around 18 degrees at idle/cruise. Seems like a lot? But for cruise probably okay. Seems to help clean it up.
This is a stock (rebuilt) 383 (150 PSI cranking compression, stock cam) with an RPM intake and Holley 750 DP (currently with stock jets), headers, etc.
Really hot here today, going to take it for a test run in a few hours.
Thanks for all the help!
383, Hemi 4-Speed, AlterKtion, D60
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