timing

[mikechief]

How much do I take out of the bolt holes in order to advance my timing 4 degrees? Will this be woth while with an almost stock motor ? Pipes ported reeds foam filter no air box and 2into1

[SNTBANSHEE]

Just buy the timing plate. Minimal cost and no guess work.

[Fullthrottle02]

Just buy the timing plate. Minimal cost and no guess work.

 

 

exactly x2

[mikechief]

Come on somebody give me a measurement

exactly x2

[Profilact]

I could draw it up for you, but I would charge more than just buying a timing plate.

[SLORYDER]

I could draw it up for you, but I would charge more than just buying a timing plate.

 

Find a good close up picture of an aftermarket plate. If you study it you should be able to figure it out.

[bansheesandrider]

I did mine myself back when the only thing that was available was the 90 dollar Pro Design plate. My buddy paid a shop to do his and then me and another buddy split the cost three ways with him. It ended up that the factory bolts with the built in washer on them sit right at the edge of the cast plate, so that is how much we ground out ours and set them up.

[mikechief]

Sweet an answer! Thanks guys

I did mine myself back when the only thing that was available was the 90 dollar Pro Design plate. My buddy paid a shop to do his and then me and another buddy split the cost three ways with him. It ended up that the factory bolts with the built in washer on them sit right at the edge of the cast plate, so that is how much we ground out ours and set them up.

[bansheesandrider]

I did mine myself back when the only thing that was available was the 90 dollar Pro Design plate. My buddy paid a shop to do his and then me and another buddy split the cost three ways with him. It ended up that the factory bolts with the built in washer on them sit right at the edge of the cast plate, so that is how much we ground out ours and set them up.

Mine has been this way for at least 16 years, I also have a cut and chambered stock head and I run 2 gals of 108 or 110 octane race gas to 3 gals of 93 octane pump and it works great.

[misterww225]

To determine the change in degrees for a rotational move, do the following. Determine the diameter of the bolt holes and multiply this by Pi(3.142). This will give you the circumference of this circle. Now divide that value by 360 to get the movement for one(1)degree. Now multiply that value by the number of degrees desired. As an example, if the diameter were 5.1" and you wanted to advance the timing 4 degrees: 5.1 * 3.142 / 360 * 4 = 0.178"

[fastquad02blaster]

In the tech faqs on this site it says right at 1mm per degree of advance/retard.