Thread: Wieand 144 Blower Q's

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You probably will want to send your distributor to a shop like Bob Jennings Dyno and have it recurved. The process is not expensive, but it really helps. Blower motors like lots of initial advance[ usually 14 to 16 degrees], fairly quick advance , and only about 36 degrees total, sometimes less depending on how much boost you are running. When a company advertises a certain amount of boost, they are usually expressing wide open throttle and 6000 rpm. Roots type blowers make boost all the time and extra torque all the time. but less at lower rpm, so an engine that would normally have 16 in. of vac at 1500 rpm might show 14 inches.
porschehacker

I haven't posted this link in a while, maybe your dad would like to read up....
http://streetmachinesoftablerock.com...topic.php?t=81

Well weiand recomends no more then 12 degrees advance at idle for sea level im running 18 degrees at 6,000 ft above sea level which is like running 8 degrees .

They told me to keep it at 8 - 12 degrees untill about 2,400 rpm then have full advance by 3 grand which mine does as i changed the advance curve springs myself with a total of 38 degrees for me .

Im also having to run a 10 pound boost pulley just to get 8 pounds of boost up here and its a blast i must say .