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Forum locked  This topic is locked, you cannot edit posts or make further replies.  [ 3 posts ] 
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 Post subject: disstributor springs
PostPosted: Sun Apr 28, 2002 7:46 am 
at what rpm should i have full mechanical advance on a stock motor with the super six? i mostly shift between 2500 and 3000 rpm's. cruising rpm's in o.d. at 70mph is 2200.

-i know this is not very accurate but the only tach is inside the truck. i held the accelerator at 2000 rpm and noted the sound then reved the throttle slow until i had max mech advance(about 24 deg btdc without vac adv hooked up) and by sound i was well under 2000 rpms.

i can unhook the vacuum advance and drop to 6 deg btdc and it will still ping at wot and the engine feels sluggish. i'd like to keep it around 10-12 deg btdc, do i need to use two heavy springs.-----------------
welcome to my nightmare

dodgecrazy@aol.com


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 Post subject: Re: disstributor springs
PostPosted: Sun Apr 28, 2002 11:18 am 
(User Above) wrote:
: at what rpm should i have full mechanical
: advance on a stock motor with the super six?
: i mostly shift between 2500 and 3000 rpm's.
: cruising rpm's in o.d. at 70mph is 2200.
:
: -i know this is not very accurate but the only
: tach is inside the truck. i held the
: accelerator at 2000 rpm and noted the sound
: then reved the throttle slow until i had max
: mech advance(about 24 deg btdc without vac
: adv hooked up) and by sound i was well under
: 2000 rpms.
:
: i can unhook the vacuum advance and drop to 6
: deg btdc and it will still ping at wot and
: the engine feels sluggish. i'd like to keep
: it around 10-12 deg btdc, do i need to use
: two heavy springs.-----------------
: welcome to my nightmare


Sounds like you need a heavy second spring with a shorter end loop. The factory sets the springs up so the light one does all the low RPM work untill the second heaver spring bottoms-out in it's end loop and slows down the mechanical advance for the higher RPMs.
Take a look to see how big the loop is on the second spring.
DD


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 Post subject: Spring Theory
PostPosted: Mon Apr 29, 2002 10:16 pm 
Can someone write a description of what the springs do in the distriburtor? What are the choices and what do they do? I'd love to know.

Mike

MAndreas@aol.com


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