1 Wild R/T
Well-Known Member
So, something to look out for/be aware of when going with light springs for a quicker advance curve.... It was pretty common with 80's-90's MP distributors that when idling you were already pulling in mechanical advance... One of the issues this would create is idling is pulling in timing, as the timing advances engine RPM's increase.. As engine RPM's increase, more timing comes in... More RPM's brings in still more timing... So you can go from idling at 750 in gear, slip the trans into neutral and very quickly the idle climbs to 1800-2000 RPM's... Or another scenario the engine is idling in neutral at a steady 800 RPM's but there's 3-4 degrees of timing advance already in the distributor... Your drop the car in gear & the RPM's drop 75-100 RPM's.. The timing falls out... Engine stalls... Not knowing why the engine stalled o compensate you try turning the idle up 75-100 RPM's... Guess what the timing/idle is gonna do?
You need enough spring on the advance weights to keep timing solidly on the base till around 1000 RPM's.. What I do is when modifying the slots (Which I weld) I weld up the inside of the slots not the outside like most folks do... Now light springs are under some tension so they don't advance quite so soon....
You need enough spring on the advance weights to keep timing solidly on the base till around 1000 RPM's.. What I do is when modifying the slots (Which I weld) I weld up the inside of the slots not the outside like most folks do... Now light springs are under some tension so they don't advance quite so soon....