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Wet exhaust sizing.
Can anyone provide sizing info for wet exhausts on diesel engine. My recent
purchase originally had 80 HP petrol engine, then 30 HP Lister, now 80 HP converted Nissan diesel. The Nissan is OK up to about 2200 RPM, but over that the exhaust has both a little smoke and what looks like steam to me. And the exhaust if absolutely rocketing out the pipe ! I've seen somewhere that diesels have twice the exhaust volume of similar sized petrol engines, which suggests the exhaust may be half the required area ( I bet it's the original diameter ...) but I'd love either rule of thumb or rigorous methods for sizing exhausts. Thanks David |
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