[DML] PRV Timing -- DeLo vs Everyone Else

["content22207" <brobertson@xxxxxxxxxxxx>]

Looking through the Workshop Manual tonight to answer another owner's
question I noticed Fig 28 on Page C:05:03 clearly depicts a 10 degree
BTDC timing scale, which of course is Douvrin spec for just about all
other PRVs including B28F.

Exactly why did DMC consider it necessary to flatten the advance curve
and bump up base ignition time on their ap only? I'd imagine a
significant boost in performance could be gained by simply
reactivating the other distributor counterweight (or replacing the
entire unit with a Volvo Xref) and sliding ignition back to where the
factory intended. 

BTW: Fig 1 on Page C:02:01 is clearly B27 or Z7 -- notice the CPR
vacuum connection and PCV through the U pipes. Oil pan is different
however. And the alternator has been moved to DeLo position. Won't
even mention the cooling fan blades...

Bill Robertson
#5939











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