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Re: Mopar Performance race distributor mechanical advance
[Re: 3ddart]
#1521062
10/24/13 03:16 PM
10/24/13 03:16 PM
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Joined: Feb 2006
Posts: 643
southern conn
1969gtx
mopar
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mopar
Joined: Feb 2006
Posts: 643
southern conn
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If you only have one sping the advance will go max limit at a low rpm maybe cranking rpm. You need to add a sping then see if it has advance.
1965 A/FX Plymouth 9.50 et @139 mph 1965 A/FX awb plymouth flashback [email]10.26@129mph[/email] mph on pump gas 426 hemi 1969 GTX Hemi 4 speed 12.50 et @ 112mph in F.A.S.T TRIM 1970 GTX 4406pac 4 speed 11.05 @126.9 mph in F.A.S.T TRIM http://www.AFXER.com
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Re: Mopar Performance race distributor mechanical advance
[Re: 1969gtx]
#1521063
10/24/13 05:42 PM
10/24/13 05:42 PM
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Joined: Sep 2009
Posts: 393
Sweden
Snoddas
OP
enthusiast
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OP
enthusiast
Joined: Sep 2009
Posts: 393
Sweden
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Did you measure the final size of the Slots. Did it in some way ended up like the size/degree as the tabel? Do you know what spring you use. I assume you use Two springs. But was they light or heavy.
Yes 1969gtx, it advance directly with one spring especislly when the point where the spring is mountrd was bend towards the spring.
1964 Dodge 330 Max Wedge clone
1965 Dodge Hemi A990 clone
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Re: Mopar Performance race distributor mechanical advance
[Re: RapidRobert]
#1521065
10/25/13 04:56 AM
10/25/13 04:56 AM
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Joined: Sep 2009
Posts: 393
Sweden
Snoddas
OP
enthusiast
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OP
enthusiast
Joined: Sep 2009
Posts: 393
Sweden
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Today I will pickup the spring kit and do some test and tune. I checked my MSD pro billet ditributor and it had the big black bushing (18 degrees mechanical advance) and one heavy silver spring and one light silver spring (not fast or slow curve just in the middle). This is what I will try to copy on the old MP tach drive distributor. Probably need to shortened the slots on the advance plate... Thanks for all help guys! 
1964 Dodge 330 Max Wedge clone
1965 Dodge Hemi A990 clone
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Re: Mopar Performance race distributor mechanical advance
[Re: Snoddas]
#1521066
10/26/13 08:27 AM
10/26/13 08:27 AM
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Joined: Sep 2009
Posts: 393
Sweden
Snoddas
OP
enthusiast
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OP
enthusiast
Joined: Sep 2009
Posts: 393
Sweden
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I got two springs for ford but they worked, maybe kind of light also but will do some more test and tune. Now it dont get all mechanical advance directly. Unfortunatly its advance about 30 degrees...
I will modify this part to get the correct mechanical advance. What is this parts name, advance plate?
And mine is marked AC.
Have seen marking on others here on internet as 11R and 15L but that assume is the degreesX2 of mechanical advance but what is the R and L, right and left? If, should R plates be used for smallblock (rotating direction clockwise) distributors and L ones for bigblocks (counter clockwise) dists.
Cheers!
1964 Dodge 330 Max Wedge clone
1965 Dodge Hemi A990 clone
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Re: Mopar Performance race distributor mechanical advance
[Re: Cab_Burge]
#1521068
10/29/13 04:49 AM
10/29/13 04:49 AM
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Joined: Sep 2009
Posts: 393
Sweden
Snoddas
OP
enthusiast
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OP
enthusiast
Joined: Sep 2009
Posts: 393
Sweden
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I tig-welded the slots a bit and machined them to about 0.390 inch. Now I am bang on target on the total (and initial) timing. Maybe do some more testing and tuning on when it kick in. Have maybe some Mopar OEM springs waiting. By the way the tall-tale on the mechanical tachometers is a really kool feature!
1964 Dodge 330 Max Wedge clone
1965 Dodge Hemi A990 clone
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Re: Mopar Performance race distributor mechanical advance
[Re: Snoddas]
#1521069
10/29/13 10:44 AM
10/29/13 10:44 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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You're almost there  . I'd mix & match springs so the mech advance starts a couple of hundred RPM above your idle speed in drive which is what the eng will see stoplight to stoplight & then with just enough tension so you are just under the pinging point at WOT up thru the gears on your hottest/driest (most likely to ping) day.
live every 24 hour block of time like it's your last day on earth
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Re: Mopar Performance race distributor mechanical advance
[Re: RapidRobert]
#1521070
11/05/13 03:25 AM
11/05/13 03:25 AM
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Joined: Sep 2009
Posts: 393
Sweden
Snoddas
OP
enthusiast
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OP
enthusiast
Joined: Sep 2009
Posts: 393
Sweden
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A friend of mine borrow me this spare distributor parts.
The two weights (Part #1889284) I think is for small block distributors?
The green spring which have the big loop on one side must be the heavy OEM spring.
The first from left must be the light OEM spring?
The other two short coil springs looks like mr. gasket 925B or Mopar performance recurve kit??
The broken/bend spring I dont even know if its a spring for a distributor.
Thanks!
Last edited by Snoddas; 11/05/13 03:28 AM.
1964 Dodge 330 Max Wedge clone
1965 Dodge Hemi A990 clone
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Re: Mopar Performance race distributor mechanical advance
[Re: RapidRobert]
#1521072
11/07/13 03:55 AM
11/07/13 03:55 AM
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Joined: Sep 2009
Posts: 393
Sweden
Snoddas
OP
enthusiast
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OP
enthusiast
Joined: Sep 2009
Posts: 393
Sweden
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Haha Possible full score on the spring and weight test. As I mention shortened the slots in the advance plate about 0,04" gave me 18 degrees mechanical advance. Will now test and tune springs. I'm quite happy about the ford advance kit springs I have installed but will try two light mopar OEM springs. You couldent be too happy have ford part on a mopar... Stay cool!
1964 Dodge 330 Max Wedge clone
1965 Dodge Hemi A990 clone
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The numbers are the amount of distributor degrees advance, not crankshaft degrees, so if it is marked 12 it ends up having 24 degrees advance at the crankshaft 
