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84 Mutt
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284 Posts
Discussion Starter #1
How much (in timing terms) does the vac. advance, (non-adjustable) advance the timing( in degrees)?
I've heard that on top of your total timing , the vac. adv. adds a little more to the total.

:rolleyes:
 

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It varies with year and application, ive seen canisters stamped from 10-20 deg, BBC'S (early ones that is) seem to use less than sm blocks.

U having probs with part throttle pinging too?

Cheers RobbieRat
 

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84 Mutt
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284 Posts
Discussion Starter #3
yes sometimes...Ive been doing spring combos to get the curve to fit my app. Actually pinged at 3000 , hard acceleration. Had some detonating going on. I am wondering if im not talking the vac. advance into consideration.I just set up the mech. advance to open quickest and is set to 18*which should be at full advance at 1800 -2000 rpm.( right around stall speed). Dat good?
 

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84 Mutt
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284 Posts
Discussion Starter #5
Very helpful page. I understand (in general) how all that crap works now. I'm sure this relates to chevy blocks too ,no?
Anyway thanks much..!!:thumbup:
 
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