Mine were bolts not lag screws. I've never seen lag screws used. Mine are either tapped right into the fiberglass or there is a nut or backing plate embedded into the stringer. I looked at generic torque spec charts for the size bolt I had and torqued them approximately once everything was aligned.
With only 1/4" clearance it sounds like a perfect candidate for the "basketball as a jack" trick. You might have to move from side to side instead of front and back as i had envisioned. Josh On Aug 12, 2015 5:12 PM, "Patrick Davin via CnC-List" <cnc-list@cnc-list.com> wrote: > [Oops, sorry about the Digest subject line, forgot to rename it before > sending my prior mail] > > Where would you slide the angle iron? Under the rear mounts? The forward > mounts are the ones visible in the picture in the link I sent (in the > drivetrain photo) - > https://drive.google.com/drive/folders/0BxfHpwssU_6NfnpXZjYta205U0pmeW1Ba0Fla2U3YmNBX1ByU1c4TURtb0ZaVDk2VVFQQ28 > > Yes it is a v-drive, so that's fwd and the rear of the engine. Those are > the mounts I want to remove. > > The very bottom of the engine (oil pan) has only about 1/4" clearance > above the prop shaft log so I suppose I could put something in there. > > I figured out today that lag screws are like wood screws, and your issue > with them might be that in theory they could pull out of the stringers. I > don't know what the current screws securing the mount to stringer are, but > hopefully they are lag screws because otherwise I don't know how I'd get > them out. I'll find out when I take them out. > > Anyway, sounds like this is a get-in-there-and-experiment type of job, so > I'll start trying some of these ideas when I have time this Sunday. > > > On Wed, Aug 12, 2015 at 1:49 PM, Martin DeYoung <mdeyo...@deyoungmfg.com > > wrote: >> >> >> >> >> > That's part of the reason it really makes sense to do now. >> >> >> >> Bingo. Based on your pictures, are you able to slide a piece of angle >> iron under the rear mounts to create a lifting point? Also, does your boat >> have a V drive or did I interpret the pics incorrectly? >> >> >> >> I started a response to your question regarding my comments on lag bolts >> and other engine mount issues. I spent the last two days on Calypso >> laminating up a large repair area (7 ½ sq. feet, close to a gallon of >> resin) so I am backed up a bit at me day job. I should get it out later >> today. >> >> >> >> Martin DeYoung >> >> Calypso >> >> 1971 C&C 43 >> >> Seattle >> > > > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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