[SPLASHED] I/O (Sterndrive) Conversion to Outboards

aspeck

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tpenfield

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Windy day today, but Tuesday and Wednesday look OK for some additional testing of engine trim & height. I hope to get my camera thingy adjusted better.

Reading up on the spec's, it looks like the Honda BF350 has a trim range from -4˚ to +15˚ (so 19˚ of trim). The spec for transom angle is 12˚, as most boats are. The stock CY338 OB has a transom angle of 16˚ as per the drawings I got from Cruisers Yachts. I made my bracket with a transom angle of 14˚, figuring I would not need as much stern lift as the stock version of the boat. But . . . It looks like I could have gone with a 12˚ transom. :rolleyes:

Anyway, taking all of these numbers into account, I will bring the trim up to nearly 100% of the range to see if there is any difference, prop ventilation, etc.

If I had to guess, I'd say the engine will be coming up 2 spaces (1.5"+/-). So, I'm looking into 'vertical jack brackets', etc., because it will put the engine mount @ 2" above the top of the transom. The hole pattern on the engine mount look to be 3/4" spacing.
 

alldodge

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Stern Jack for 350HP motor, that's going to be beefy and will set motors further back so may need to come up more, maybe?

Maybe check also on a shorter leg, but that will be pricey
 

Scott Danforth

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a couple of bobs jack plates........ you can get into really skinny water then.
 
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