Had not seen these RanWhenParked PRV reference pieces in this forum before. Parts 1-3 in order at links below.
Have a look at the interesting engine-tech and car info regarding the beloved PRV V-6 engine.
LINK pt1: http://ranwhenparked.net/2010/08/16/the-controversial-prv-engine-part-one/
LINK pt2: http://ranwhenparked.net/2010/08/23/the-controversial-prv-engine-part-two/
LINK pt3: http://ranwhenparked.net/2010/09/14/what-lies-beneath-the-controversial-prv-engine-part-3/
You can read these to see how many different ways the Douvrin crew screwed pieces onto PRV's over the years and discover why the distributor cap on a PRV looks a bit odd, at least until the even-fire variants came out. And why the PRV is a 90deg V-6 instead of a 60deg design.
Excerpt from Part 3:The PRV engine is indeed controversial. Many Volvo enthusiasts will insist it was terrible and reference the bullet-proof “red-block” four-cylinders, while many French car fans will claim it wasn’t so bad, and after all, a PRV powered Peugeot reached 253 mph at LeMans. DeLorean owners have often lamented that the engine claimed the life of their DMC-12 in a devastating self-destructive blaze, while those who owned PRV powered Dodge Monacos or Eagle Premiers probably didn’t care enough about their cars one way or another.