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MSD 8580 Distributor Adv Bushings

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MSD 8580 Distributor Adv Bushings Empty MSD 8580 Distributor Adv Bushings

Post  Tore July 24th 2018, 8:59 am

Why do you need to use adv bushings in the distributor when you set up for total timing?

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Post  rmcomprandy July 24th 2018, 9:13 am

Tore wrote:Why do you need to use adv bushings in the distributor when you set up for total timing?

Tore

They limit the amount of distributor advance it will produce which will determine the amount of initial timing.
Locked distributors don't use one.

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Post  Tore July 24th 2018, 9:20 am

But should you use one when you have an unlocked dist?

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Post  Lem Evans July 24th 2018, 9:22 am

The black one works best for me.

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Post  Tore July 24th 2018, 9:24 am

Tks guys.

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Post  rmk57 July 24th 2018, 10:39 am

The instructions that come with the distributor will have all that information as to what bushings and springs to use to suit your advance curve.

The instructions are available online to.

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Post  68galaxie July 24th 2018, 1:52 pm

I use these bushings:

http://4secondsflat.com/MSD%20Distributor%20Tuning.htm

Red-Smallest 28
Silver 25
Green 23
Blue 21
Purple 19
Black-Largest 18

The black MSD bushings allow 18 degrees of mechanical advance.
I wanted more initial advance so I used the 4secondsflat 10 degree bushing.
Works very well.

Cheers
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