My Perkins Prima engine only goes at 2000rpm

[GordMay]

Overall, the Perkins Prima was a pretty good Diesel, apart from a couple flaws:
ie:
The electrical components are of typical English quality (very bad).
Awkward to work on (physical layout).

[W32PAMELA]

I put a new Perkins Prima 500 in my boat in 1996 and now have over 6000 hours on it. The fresh water pump started leaking at about 2000 hours (harder than it should be to replace). The replacement has been fine since.

The Jabsco water pump">raw water pump starts leaking at about 2000 hours (easy to replace).

The hurth transmission started leaking from the rear seal at around 4000 hours and the rear seal had to be replaced (probably caused by poor engine alignment on my part).

The exhaust elbow is cast aluminum and had an aluminum fitting where the raw water was injected. The aluminum fitting corroded and started leaking early in the motors life and the replacement turned out to be iron. The elbow itself has been replaced because of corrosion under the seat of the iron injector fitting.

Recently I replaced the timing belt. It was in poor shape and I was lucky it didn't break. If you get the boat consider having the belt replaced.

I've never regretted installing the engine although I'd have been happier if the engine had more iron and less aluminum.

Bob Stewart