[Healeys] Timing mark

David P frogeye at porterscustom.com
Wed Apr 24 07:17:00 MDT 2019

My question is why are you running it a twice the advance the factory 
advises? Excellent way to introduce preignition.

On 4/24/2019 6:21 AM, simon.lachlan at alexarevel.plus.com wrote:
> I bought a ProRace Harmonic Balancer a few months back and installed 
> it whilst attending to some other engine chores….new oil pump, engine 
> mounts, reverting to SUs from Webers etc.
> Soooo….I was given sensible advice to mark the 15° line on the 
> balancer as the markings are virtually invisible once the thing’s 
> installed, let alone spinning at +/- 1,000rpm.
> Now for the confession. The car’s not been running brilliantly….some 
> hesitation, particularly under load, from +/- 4,000 rpm. Leaving out 
> fuel issues for the sake of this discussion, I was thinking about the 
> timing again. And I know that it’s been showing 15° BTDC with my brand 
> new timing light. But I was still not sure so I looked at the photo of 
> my painted timing mark. It shows that I managed to put the paint on 
> the 16mark. Now, 1° isn’t a lot but I can foresee the potential of 
> making it worse when I take up the lamp again.
> My question is this. What do I dial into the timing light to account 
> for the mark being 1° out? (If I go the wrong way, I’ll be 2° out).
> Thanks,
> Simon
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