by bgsengine » Sat Feb 15, 2020 6:27 pm
OK for one thing, I know what you mean about having them centered, but I cant remember seeing one that needed the oil seal itself to center them - all the ones Ive seen had a raised lip on the oil seal housing, so that is kinda unusual.. But to address the timing issue, The purpose of the point gap is actually to set ignition timing as well (you could alter the old briggs engines timing that same way) so the breaker cam on crank really shouldn't matter.. In other words.. You would set timing at a .020 gap , so that future replacement of points would be set to .020 as well.. so you would not need to re-set timing when replacing points.. if you are not using new OEM points there's possibility of the cam rubbing block being a little too short.. But again, when points are set to .020, one would tend to see points open at the correct time (wear on the cam lobe would be rather obvious, one would think, if it was lobe wear causing the problem) Second point - you may need the spec number because not all engines had the same timing (Some I believe were actually .090 BTDC) Might try .090 BTDC and see if that works out as expected.. One hint as to centering the stator I can think of - if you can get it set to anywhere that nothing is rubbing, then perhaps you can mix some JB Weld or similar hard epoxy, clean and dry the seal and crankcase, then apply (cotton swab) a thin swipe of grease to the stator, and fill the gap, (then scrape excess off stator top to prevent building up a ridge after it hardens) and you might have some luck then keeping stator consistently centered (if the .090 spec doesn't solve the problem when you tighten things down, it might result in a different clearance) ..
Basically it's a rambling thought there but the basics of it, might have to get engine spec number to verify what your timing is supposed to be (and make sure it is actually a V70, not a VH or VM 70? ) and also check your points carefully (rubbing block on breaker arm, the locator pin/pivot on the points, make sure point contacts seat squarely, etc) ..
How poor are they who have not patience. What wound did ever heal, but by degrees? - Iago (Othello Act II, Scene 3)