[DML] Correction: Timing marks on crankshaft pulley

["content22207" <brobertson@xxxxxxxxxxxx>]

Correction to my earlier reply to this post:

Pause is between Cylinders #1 and #6 (one of the advantages of
carburetion -- you can actually see the distributor cap!).

I think what's throwing you is engine rotates TWICE for each firing
cycle (720 degrees). Even fire would put the timing marks 120 degrees
apart. Odd fire pause moves the second mark another 30 degrees.

Firing order: 6-3 5-2 4-1.

You could put a timing light on a PRV (B27/B28) wire #6 for proof...

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, Jim Strickland <ihaveanaccount@xxxx>
wrote:
> 1 and 6? How could this be?  From the timing sequence, 1 and 6 fire
> "together", and are just a few degrees off.  
> 
> Jim
> 1537
> 
> On Sun, 11 Jul 2004 17:22:49 -0000 "content22207"
> <brobertson@xxxx> writes:
> > One mark is TDC Cylinder #1, the other is TDC Cylinder #6. PRV
> > wierdness (it's a good engine, but definitely has its quirks).
> > 
> > The two marks are 150 degrees apart. Look at the pulley with them
> > located  2:30 and 9:30 -- TDC #1 is to your right and TDC #6 is to
> > your left.
> > 
> > If your timing scale hasn't been monkeyed with you should be able to
> > time the ignition off whichever wire is easiest to access (you may
> > find that to be #6).
> > 
> > If your timing scale needs to be re-indexed, the PRV does have a 
> > nifty
> > way to do so: on top of the engine are two block plugs. The one
> > closest to the front (our back) accesses the oil galley. The one
> > closest to the back accesses a crankshaft counterweight, into which 
> > an
> > 8mm indexing hole is pre-drilled. Rotate the engine close to TDC #1
> > (no more that 20 degrees BTDC) and insert a foot long 5/16" drill 
> > bit
> > through the rear hole. The bit will ride on the counterweight.
> > Continue rotating the engine until the bit drops into the indexing
> > hole (8" or so down from the top of the engine). Cylinder #1 is now
> > TDC, and the timing scale can be positioned accordingly.
> > 
> > Crankshaft pulley is of course keyed, and does not have a harmonic
> > balancer, so you shouldn't ever need to worry about the timing marks
> > themselves.
> > 
> > Bill Robertson
> > #5939
> > 
> 
> [moderator snip]




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