[Fot] Distributor centrifugal advance curve for race engine

[Phil Gott]

The Advance curve is all done at about 3000 rpm. 30 degrees total advance is about right. Will depend on your particular engine, but might be best to back off 2-4 degrees.


Sent from my iPhone

> On Mar 19, 2021, at 6:41 PM, Greg Hilyer via Fot <fot at autox.team.net> wrote:
> 
> 
> Hey Tim,
> Happy belated 3/17!
> There’s a guy named Kas (can’t remember the last name) that did some dyno tuning awhile back - he even wrote a book or two about it🤪.
> But in all seriousness, I’ve done mine by the (Comp Prep Manual) book. Base and total is easy but it takes a bunch of fiddling to get the “Kas curve”. Has worked great but I’ll admit that I’ve never gone beyond that.
> Greg “Lunker” Hilyer 
> Albuquerque NM
> 
>> On Mar 19, 2021, at 4:27 PM, timmmurphh--- via Fot <fot at autox.team.net> wrote:
>> 
>> What advance curve are folks using in their race engines? I have 87mm pistons, a Kastner G3 cam and about a 12:1 compression ratio. I am using about 19 degrees advance at idle (no centrifugal advance) and 30 degrees advance at 3000 RPM.  I don’t know what I have at higher RPM’s because I never looked. I’m currently doing an engine rebuild so I will have to look what I’ve got at the higher RPM’s when I get the engine running. I’m curious as to what others are using and if anyone has done any testing on a dyno with different advance curves.
>>  
>> Thanks in advance for your input.
>>  
>> Tim Murphy
>> #317 BRG TR4
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