whats the advantage of locking the dizzy
Thread Starter
Registered Piston Eater
Joined: May 2003
Posts: 1,053
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From: Erie, PA
whats the advantage of locking the dizzy
ive heard some people lock the distributor. what is the advantage to this? i know this stops centrifugal and vac advance but what is the advantage of no advance?
"By the beard of Zeus!"
Joined: Mar 2001
Posts: 867
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From: Huntsville, Alabama / Atlanta, Georgia
I think after 4000 RPM it stops advancing any further--at this point it is advanced by 20 degrees or so...
Advantages: slightly better lower speed power and slightly better gas mileage
Disadvantages: might have rougher idle and will not pass smog
I think people do this so that it's easier to fine tune the timing at high rpms...
FS
Advantages: slightly better lower speed power and slightly better gas mileage
Disadvantages: might have rougher idle and will not pass smog
I think people do this so that it's easier to fine tune the timing at high rpms...
FS
it WILL run
Joined: Dec 2002
Posts: 2,017
Likes: 1
From: Raleigh,MS
Originally posted by FuLLsMoKe
I think after 4000 RPM it stops advancing any further--at this point it is advanced by 20 degrees or so...
Advantages: slightly better lower speed power and slightly better gas mileage
Disadvantages: might have rougher idle and will not pass smog
I think people do this so that it's easier to fine tune the timing at high rpms...
FS
I think after 4000 RPM it stops advancing any further--at this point it is advanced by 20 degrees or so...
Advantages: slightly better lower speed power and slightly better gas mileage
Disadvantages: might have rougher idle and will not pass smog
I think people do this so that it's easier to fine tune the timing at high rpms...
FS
Hunting Skylines
Joined: Apr 2001
Posts: 3,431
Likes: 4
From: Brisbane, Queensland, Australia.
Originally posted by wwilliam54
teh timing doesnt advance really really far when you go for high RPM's with a bridge/PP
teh timing doesnt advance really really far when you go for high RPM's with a bridge/PP
Bridge and pp engine's have more overlap which causes exhaust gas dilution of the intake charge at idle and light load. This has the effect of slowing down the flame travel so you need more ignition advance for the engine to run well. There are other things that effect this as well like a/f ratio, volumetric efficiency, etc.
Last edited by REVHED; Aug 12, 2003 at 01:34 AM.
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