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Originally Posted by crmont
Some very nice work here! MAN WHAT A JOB...
http://www.coastalboatsales.com/jfraley/gallery/albums.php
Mostly pictures but shows how they did those little things we have always wondered about. I haven't found an e-mail address but I have some questions;
1 Do both shafts turn the same direction?
2 Isn't that riser gonna' be real hot? Can it be wraped?
3 Will the OM 617's hold up to the extreme conditions?
4 Have they saved money vs. purchasing new marinized engines? (Obviously you can't count the labor!) |
Generally, diesel engine exhaust isn't as hot as gasoline engine exhaust. Risers always have raw water exhausting on the exit side of the riser manifold, and do not see one installed in the photos.
Engine rotation is with counter rotating engines usually, torque from engines turning the same rotation will cause poor rudder response and steerage.
I would bet the 617 would hold up better than many jap marine diesels very well, but they are kinda heavy!
It all depends on what they paid for their 617 engines. A 6 cylinder Westerbeke diesel can run over ten grand new! If you add turbo charging, a lot more! My guess is that it could be cheaper to go with the MB 617.