BF130 - optimal mounting postion?

M

maillon

Seaman
Joined
Dec 21, 2002
Messages
68
Hello Me again.......<br /><br />When I mounted my 130, the directions indicated that the cavitation plate should be level with the hull line. However, when I run the boat with the trim more than 1/3 up, I believe the cavitation plate begins to scoop water and shoots it up the transom. At high speeds, so much water shoots upward that it begins to fill the back-wash area of the boat. I think all I need to do is raise the engine 1 or 2 notches. Anyone have any recommendations on how high I shoud go?<br /><br />Thanks
 
H

Hawaiian

Petty Officer 2nd Class
Joined
Feb 4, 2003
Messages
111
Re: BF130 - optimal mounting postion?

First of all in is called an ANTI-VENTILATION plate because it keeps the prop from ventilating not cavitaying. Mine came from the dealer even with the bottom of the hull but this caused too much drag when going fast so I raised it one hole. It performed better so I raised it one more hole. Now the anti-ventilation plate is 1 1/2" above the bottom of the hull and on the surface when trimmed out while on plane. The prop only ventilates in tight turnes or very heavy seas while trimmed out.
 
Z

ZEE

Cadet
Joined
Sep 7, 2003
Messages
16
Re: BF130 - optimal mounting postion?

I had the same experience - dealer mounted the BF130 low and anyone in the back of the boat got showered. Its now raised to the highest position and runs great. No ventilation or cavitation except in tight HS turns or heavy seas. I have Bennett trim tabs and use those to set the attitude. The Honda trim gage is totally useless. For WOT on calm water, I tilt the motor until ventilation occurs, then drop it back a bit. This gives the flatest wake and best top end with my 13-1/4 X 15 4-blade Turbo Flats IV at 6050 RPM.
 
MajBach

MajBach

Chief Petty Officer
Joined
Jun 21, 2003
Messages
564
Re: BF130 - optimal mounting postion?

Wow. I cannot even picture how the plate shoots up water and reverses the direction. But another here said he had the same problem. Personally, I would check to make sure it's not your transducer. It to will shoot up varying amounts of water too depending on trim as the back of the boat sits in the water differntly.
 
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