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Old 07-15-2013, 03:21 PM
Kevin 89MC's Avatar
Kevin 89MC Kevin 89MC is offline
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Join Date: Aug 2005
Boat: 1989 Prostar 190, 351 Indmar
Location: Twin Cities, MN
Posts: 1,085
yeah this definitely needs to be done by a shop, or with a strong drill press at a minimum. When I replaced my heads I had them drilled out by a shop. I did just buy a nice used drill press for drilling steel. Makes a HUGE difference. I used to struggle drilling out 1/4" steel by hand with even good bits, but with the drill press drilling through steel is like drilling through wood.
Good luck,
Kevin
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1989 ProStar 190 with "Safe T Top", 351 Ford, GT 40 heads painted Ford Blue, Elec. Ign, 1:1, 720 hours, 4 blade prop, PP 6.5, removable platform brackets, custom color from factory, hot water shower, Boat Buddy & LED lights on trailer
2010 D3 Z7, 2 @ 32 off, 34 mph so far
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