1955 V8 timing advance
11-12-2009, 09:24 PM
#2
Burning Brakes
You'll have to pull the distributor and install a bushing to limit the total advance. Places like Summit or Jegs have them. For example;http://www.summitracing.com/search/?...ce%20kit&dds=1
If you're comfortable pulling the distributor, the bushing is not hard to install. Typically the kits have detailed instructions that tell you which bushing and which spring to install to get a given curve.
Hope that helps,
Steve
If you're comfortable pulling the distributor, the bushing is not hard to install. Typically the kits have detailed instructions that tell you which bushing and which spring to install to get a given curve.
Hope that helps,
Steve
11-12-2009, 09:37 PM
#3
Instructor
Member Since: Jun 2005
Location: Bowling Green Kentucky
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A couple of Q's........
First here's the specs for the distributor.
Cam Angle, degrees: 26-33
Breaker Point opening, Inch: .016
Condenser Capacity: .18-.23 Mfds.
Breaker Arm Spring Tension: 19-23 Oz.
Centrifugal Advance:
Advance starts 1 degrees @ 400
Full Advance: 16 degrees @ 1800 RPM
Vacuum Advance Data:
Inches of vacuum to start plunger movement: 5 - 7
Inches of vacuum for full plunger travel: 12 - 14-1/2
Maximum vacuum advance, Dist. degrees: 11-3/4
Do you have the first type (vaccuum advance) or second type (no vaccuum advance)? As you should know the vaccuum type will give you more total advance, so you need less initially.
Second, are you timing this on or off of the car? In either way, though, you need to limit the total advance (either vaccuum and mechanical or just mechanical). My suggestion would be to install different weights and springs to keep things "closer" to zero. Your weights are advancing too much and changing either or both of these will keep you closer to zero.
On the car, you will want to put about 6 degrees of initial advance and have the idle at about 425 rpm's.
Cam Angle, degrees: 26-33
Breaker Point opening, Inch: .016
Condenser Capacity: .18-.23 Mfds.
Breaker Arm Spring Tension: 19-23 Oz.
Centrifugal Advance:
Advance starts 1 degrees @ 400
Full Advance: 16 degrees @ 1800 RPM
Vacuum Advance Data:
Inches of vacuum to start plunger movement: 5 - 7
Inches of vacuum for full plunger travel: 12 - 14-1/2
Maximum vacuum advance, Dist. degrees: 11-3/4
Do you have the first type (vaccuum advance) or second type (no vaccuum advance)? As you should know the vaccuum type will give you more total advance, so you need less initially.
Second, are you timing this on or off of the car? In either way, though, you need to limit the total advance (either vaccuum and mechanical or just mechanical). My suggestion would be to install different weights and springs to keep things "closer" to zero. Your weights are advancing too much and changing either or both of these will keep you closer to zero.
On the car, you will want to put about 6 degrees of initial advance and have the idle at about 425 rpm's.
11-12-2009, 10:03 PM
#4
I'd check on the bushing kit if you are using a stock distributor, the weights are under the plate on this type distributor and may be different than the kits for newer models...
