total timing?

[rowingone]

I set my intial timing at 10 btdc but cant get my total timing much past 26degrees - the mech adv is moving fine in the distributor - what could be the problem - wrong advance springs? This car has been bubbaized so . . . ??

 

[rowingone]

After a little more work I have found that I do reach total timing of 36 but not until 4000rpm - is this acceptable?

 

[Firemist1]

Sounds like the springs are a little stiff. If you go to lighter springs, you can bring the advance on earlier. Depending on camshaft you are using, you generally should have 36 - 38 degrees total advance by 2800 RPM.

 

[allcoupedup]

Tell us a little about your engine.....

 

[Mikey1]

Tell us a little about your engine.....

Well....if its a 64 it should at least be a small block. Then the advice on the 2800 rpm for full advance seems right to me. If anything is heavily modified...well then this is another issue.

If you try something ba youself...please note that crank rpm is double dist rpm. The 2800 rpm is crank rpm and equals 1400 dist rpm. If you bring it to a shop they should be able to check....the additional mechanical advance through the weights is something like 6 degrees....order a weight kit and go to a shop with a distributor checkbench...they should be able to solve your problem.

 

[allcoupedup]

If it is a 327/365 all mechanical advance should be in my 2350 RPM.

 

[6T7Redvette]

Check sequence

Did you check the total advance with or without the distributor springs installed. Should be without. If the springs are soft enough and the weights aren't binding you should get full advance with very little extar RPM, 2600-2800 max.

 

[attret00]

I use the medium springs from a curve kit and get total advance at 2600rpm.

 

[rowingone]

Thanks for all the replies . . . it will be interesting to see how much difference a recurve will make . . I live at higher altitude so I expect that will magnify the change . .and yes it is a small block with only slight mods.