330 ignition timing

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330 4HL
Posts: 22
Joined: Wed Mar 20, 2013 1:01 pm

330 ignition timing

Post by 330 4HL »

Can address the following:

1) For the timing marks, the 250 manual lists 10AF as 1000rpm mark and 42AM as 5000 rpm marks.

On 330 Flywheel, the marks are 10AF and AM12 for Advanced Mechanical. The AM12 is the only number I can find for AM series. Can you please confirm that AM12 on 330 is same as 42AM on 250?

2) There is two sets of points in each of the distributors. One set is for the odd number plugs, one for the even. With distributor 1-6 correctly positioned in car ,is the even set closest to the center of the car? Or to the outboard side?

thanks
BobA
Posts: 103
Joined: Tue Nov 12, 2013 7:36 pm

Re: 330 ignition timing

Post by BobA »

The 12AM does not sound right, are you sure that it is not 42? As for the point set, when the rotor is pointiing to #1, the point set that is just opening is the one that is firing that cylinder. Hope this helps.
Jumprun
Posts: 276
Joined: Wed Aug 01, 2012 6:28 pm
Contact:

Re: 330 ignition timing

Post by Jumprun »

While I had my flywheel off last month (330 engine) it was convenient for me to put a dab of white paint on the timing marks so I could see them better with a timing light and I remember marking a line that was at 42 degrees BTDC (PM 1/6)

--T
330 4HL
Posts: 22
Joined: Wed Mar 20, 2013 1:01 pm

Re: 330 ignition timing

Post by 330 4HL »

A belated update on the ignition timing problems we've been having.
We have ignition!

After days of swapping both new and old parts side to side between distributor units, it was finally narrowed down to coil, condenser, or resistor. On Friday, the problem was determined to be a intermittent fault with one of the new condensers I purchased from Rutlands, so the old ones went back on and the problem appears to be solved.
She ran great for a full 1/2 hour.

next time I'll buy a four cyl.!

cheers
John Vardanian
Posts: 1906
Joined: Wed Sep 04, 2002 12:13 am
Location: San Francisco Area

Re: 330 ignition timing

Post by John Vardanian »

It's a good feeling chasing out the demons. Are we talking about the resistors (mounted on the coils) or the capacitors (mounted on the distributors)? Thanks.
PF Coupe
DWR46
Posts: 621
Joined: Tue Sep 22, 2009 8:23 pm

Re: 330 ignition timing

Post by DWR46 »

If your car still has the correct CE1E condensers ( no longer available), and the points are not too badly pitted. NEVER replace them. I cannot remember the last time I replaced a Ferrari condenser.
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