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

[Pmt133]

Looks higher than mine at wot.

 

[alldodge]

Agree, looks low

 

[aspeck]

Here is Ted doing a full speed test …

1M views · 13K reactions | Well that's not what we were expecting to see on the 360 footage!😮 66racing's Misscat had a small explosion causing the cowling to come flying off, and we somehow caught it on camera! | Top Banana Racing

Well that's not what we were expecting to see on the 360 footage!😮 66racing's Misscat had a small explosion causing the cowling to come flying off, and we somehow caught it on camera!

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[redneck joe]

dammit...

 

[tpenfield]

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.

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]

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]

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

 

[tpenfield]

I figure that I can do 1-2 bolts holes up before calling Bob @ the machine shop

 

[tpenfield]

I hit 10.0 hours, so the break-in cycle is done.

First maintenance interval is at 20 hours

 

[nola mike]

Need snacks. I like KFC dark meat. Assuming you have a fridge in there, get it good and cold...

@tpenfield Do they still have D'angelo's there? John's liquors (Miller High life long necks special, had to go in the back cooler to get them) and steak and cheese were the go-to's in Falmouth for me way back when...

 

[tpenfield]

@tpenfield Do they still have D'angelo's there? John's liquors (Miller High life long necks special, had to go in the back cooler to get them) and steak and cheese were the go-to's in Falmouth for me way back when...

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[nola mike]

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Holy crap! And Papa ginos is still there?! They closed nearly all of them! 25-30 years ago for me...

 

[tpenfield]

Food establishments aside . . . I am planning on taking the boat out when it hits 20 hours on the meter for the post break-in service, which is oil and gear lube along with a papal blessing from the Honda Gods.

I'll also raise the engine height 2 bolt holes and time permitting put the boat back in the water for some additional test runs. I am thinking that if the engine height gets into its sweet spot, the 19P propellers may be OK. Target RPM would be 5700 (ish).

 

[tpenfield]

I've already started my boat maintenance and upgrade list for 2026-2027. I usually copy/paste from the prior year's list and edit accordingly. It was nice to be deleting a lot of the stuff that were sterndrive related. I think there were about a half dozen things that came off the list.

 

[redneck joe]

nice new sig pic