MartyMar":1oajeh0z said:
Can folks offer a list of inspection items to look at before buying a Ranger 21 Classic.
Hello Marty,
Barry and Rob have given you good advise.
The R21 is a very simple boat.
It uses a very simple (non-electronic, mechanically-controlled), naturally-aspirated diesel engine. As long as you or a surveyor recognize the major faults of the boat you are considering, and appropriately discount the price, you will be fine. OTOH, if you don't want a 'project' boat, then you must ensure, within reason, that the hull and engine are 'OK.'
The R21 has a solid fiberglass hull WITHOUT coring material, so water permeation from poorly maintained hull penetrations is not a worry with this particular model.
If you don't mind saying, how many hours are one the engine? Is it the original engine? The 'newest' an R21 could be is MY 2006...so you are talking about a boat that is AT LEAST 11 years old. The engine may be 'fine' and probably is if reasonable care has been taken. Remember, diesel engines utilize a high pressure fuel pump which is lubricated by diesel fuel and is easily damaged if the engine is 'run out' of fuel (not so much the case with gasoline engines). So, I'd ask in a 'round-a-bout' nonchalant manner if the boat has ever been 'run out' of fuel. This is not a deal breaker if it HAS been run dry, just something of which to be aware.
But, back to the 11+ Y/O boat...inspect the rubber components...ALL the hoses, fuel lines, etc are suspect if original...that stuff all degrades with time the same as a car. Squeeze the raw water and coolant ("fresh" water) hoses...do they feel springy-rubbery like good hose or are they brittle feeling? Again, not a deal breaker but realize you may need to replace that stuff if it hasn't been done in the last few years.
Barry suggests a WOT speed of 8-10Kn...that may or may not be realistic with an R21, I don't know for sure. I WOULD note the RPM at WOT, however. The engine should top out at approx 3600 +/- 200 would be fine. If she is in the water and has growth on the bottom, maybe 3200 rpm WOT would be OK. At any rate, note the 'feel' of the boat at it's top speed...any excessive vibration or 'unhealthy' grinding/rattling/whining? This is a small, probably 3 cylinder diesel so at idle (7-800 rpm) it vibrates a LOT, but that should disappear by 1200 rpm if not sooner. And as Barry said, water ejection from the exhaust should be vigorous at anything above idle....and water normally spurts out in 'batches.' By that I mean it will seem to 'pulsate' with a couple BIG gulps shooting out, followed by a small stream, then another big gulp or two, in repeating fashion; it is not a steady stream like from a garden hose.
Finally, I would look really closely at the exhaust elbow. On an engine that is 10+ years old it may be OK but likely has significant carbon build-up inside along with degradation of the metal by corrosion. Yanmar publishes a schedule for the replacement of this item, and personally, I would plan on replace it if it is 10 years old even with low engine hours; or at ANY age with >750 hours. The exhaust elbow is a "wear" item that is expected to wear out and need replacing. Given that it is part of the exhaust system an ALL raw water passes through it, you DO NOT want to wait until it fails...so replace it on a schedule like the rest of the engine maintenance. That's just me.
Let us know if you have other questions...these are GREAT boats!
/dave