4age ignition timing lock vacum and mec advance???

[samham]

Howdy Im doing the timing on my 4age race car, twin dellorto side draft carbys. The distibuter is an electric unit of a 4k i think, the vacum advance is disconected.

See pic of distributer and engine here:
http://i88.photobucket.com/albums/k188/ ... MG0244.jpg


A local engine tuner told me to lock the mechanical advance and block of the vacum. Then timing to 24 degrees btdc as long as it will start and dosnt pink etc.
How does that sound should i do this???

[matt dunn]

Howdy Im doing the timing on my 4age race car, twin dellorto side draft carbys. The distibuter is an electric unit of a 4k i think, the vacum advance is disconected.

See pic of distributer and engine here:
http://i88.photobucket.com/albums/k188/ ... MG0244.jpg


A local engine tuner told me to lock the mechanical advance and block of the vacum. Then timing to 24 degrees btdc as long as it will start and dosnt pink etc.
How does that sound should i do this???

Some people do it that way.
Usually the people who dont own computer and cant work a VCR or the remote for the TV.

Others do it properly.

24 deg is nowhere near enough. I run that at 20psi boost.
And at 34 degrees where it's close, i doubt it would start.

We do them at work all the time.
Do away with the vacuum advance.

Set up the dist so it run 13 degrees, which is 26 at the crank, and all advance in as low as possible by adjusting the springs, usually about 3300rpm.
Then set base timing at 6, 8 or 10 depending on comp fuel type of engine etc etc.

matt

[samham]

yeah I thought it sounded a bit funny, they put the mech. advance etc there for a reason. I was also looking at HEI like hyperpak etc.
Anyone using it??