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Posted: Thu Mar 26, 15 7:16 pm
by db
Great job finding all those links, it always takes me bloody ages when I need them!
Posted: Fri Mar 27, 15 10:43 am
by Dave999
Not all parts appropriate for all Dizzys
but ask turnip
you can use any combo of the springys you like
i would suggest the lightest pair to start off.
or the lightest and your remaining standard spring
if it pings when you lug it up a hill or put the boot in
put in the next heavier one.
you have all the combos there to produce a fast curve or a longf slow curve
modern fuel seems to like a pretty short and fast curve all in by 3000
and initial of 15 -17. every motor is different.
Dave
Posted: Fri Mar 27, 15 11:13 am
by Dave-R
If it is not a race car then half in by 2000rpm is good enough as long as it is all in by 3000 as long as you are using the vacuum advance as well. But limit the vacuum advance to just 10 degrees.
Posted: Fri Mar 27, 15 11:37 am
by morgan
Powermyster wrote:Kit arrived, the paperwork says use one stock spring withe on of the new springs. I thought I just put two of the new springs on??
Also there is a little brass coller with the springs but I don't see any mention of what that's for, any ideas
The little collar is the 'advance stop bushing'.
The two factors at play here are 'how fast it advances' (the springs determine this, hence different grades). and 'how far it advances' - the little collar does this, sits on a pin in there somewhere and stops the weights flying out too far.
You can do all sort of curves depending on your need. The collar stops your total advance going too far (so if you have initial at 10 and move it to 18, you need something to stop it going too far the other end).
Like this (diagram shows better)
Posted: Fri Mar 27, 15 11:42 am
by Dave-R
morgan wrote:The little collar is the 'advance stop bushing'.
For a GM or MSD distributor only I would think.
Posted: Fri Mar 27, 15 1:12 pm
by Powermyster
Jon confirmed its not needed for my application.
I'm more or less ready to fire the car up, plugs are fouled pretty badly, so I'm going to try pick some up today along with some AF allen keys. All my stuff is metric, so I'm out buying tools again
Shes set up for parted vacuum, reading some of the posts and most say I should run manifold vacuum, so I might try that too.
