View single post by subwoofer
 Posted: 03-09-2011 08:44 pm
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subwoofer

 

Joined: 04-01-2008
Location: Sandefjord, Norway
Posts: 617
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The critical part is the advance at WOT (or vacuum disconnected) and high RPM. It should not be more than 30 degrees, 28 is good. That will bring your idle advance down to ~10 degrees. Unless you change weights and springs, you are stuck with what you get - rev it up and get the high RPM advance right. You will not ruin the engine idling anyway.

The stock JH spec 907 has way too low compression, I run a European 907 from a '78 Lotus Eclat, and 9.5:1 compression and DellOrtos really make a difference.

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Joachim