Prevost engine swap possible?
I'm looking at a used Prevost that's a beautiful unit in nice condition, but it's got the old DD 8v92 motor, which I'm really leery of. It's got a rep as a dripper and fuel guzzler. What are the chan...
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if it is n good shape the 8v92 will give you good service. when they were a common engine in trucks a quick way I would use to check the condition was to start the engine cold after sitting over night and watch the smoke out of the exhaust at idle if any white smoke clears up within 30 to 45 seconds then the rings are probably ok take a infrared thermometer and check the exhaust temp at the manifold ports if the white smoke persists the port that is colder will be the smoker these engines with high mileage are bad about breaking the top ring
also check the amount of oil coming out of the air box drains (slobber tubes)if it drips it is somewhat normal if it runs out probably piston pin retainers or piston crown to skirt seals are leaking, major repairs. also make sure there is no coolant in the oil quick check with the engine hot stick your finger up the breather tube if it comes out foamy and watery major repairs. 92 series engine main bearings don't like anti freeze. most common cause would be the head gaskets or the liner seals. yes finding a tech that even knows what a 71 or 92 series Detroit is let alone how to fix one is getting more difficult every day.
good luck with it
also check the amount of oil coming out of the air box drains (slobber tubes)if it drips it is somewhat normal if it runs out probably piston pin retainers or piston crown to skirt seals are leaking, major repairs. also make sure there is no coolant in the oil quick check with the engine hot stick your finger up the breather tube if it comes out foamy and watery major repairs. 92 series engine main bearings don't like anti freeze. most common cause would be the head gaskets or the liner seals. yes finding a tech that even knows what a 71 or 92 series Detroit is let alone how to fix one is getting more difficult every day.
good luck with it
