View single post by Jim Ketcham
 Posted: 02-27-2015 05:16 pm
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Jim Ketcham

 

Joined: 03-13-2005
Location: Salt Point, New York USA
Posts: 208
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 Your advance curve appears to be a bit off. Max advance for both the Stromberg or Dellorto stock engines is 17.0 degrees at 2500 rpm.
for your Dellorto setup with stock engine:
1200/2.0
1400/4.4
1600/6.8
1800/9.0
2000/11.4
2400/16.0
2500/17.0 max advance

Either the distributor is not original to JH (MG maybe?) or the advance springs and/or weights are messed up.

I do not know if I was clear in my earlier post, but you should NOT be using VACUUM RETARD on the Dellorto configuration. Even on the Stromberg configuration it does not offer any performance benefit. The Dellorto configuration came with the Lucas 23D distributor that does not have a vacuum module on it.