Submitted by Anonymous on Thu, 12/31/1998 - 15:55 Forums: LML Archive From: <RWolf99 [at] aol.com> Subject: LC20 Engine Mount Blues Date: Thu, 31 Dec 1998 10:55:26 EST To: <lancair.list [at] olsusa.com> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> I have just received my long engine mount. While it looks like a nice piece of hardware, there are significant problems with it. My original (short) mount had "bolt tubes" (the tubes through which the bolts attaching to the firewall go) which protruded up to 1/4 inch forward of the weld forming the junction of the engine mount tubes. The end result was that the washers and the bolt heads fit square to the "bolt tubes". There was no intereference and it was a nice piece of work. This mount has "bolt tubes" which stand off insufficiently from the weld junction. Several of the bolts cannot be inserted without the washer interfering with the weld bead, and in one case the washer interferes with the engine mount tube itself! I can see grinding off weld bead material to make clearance, but not the engine mount tube itself. Two solutions emerge: 1) Call Vern and ask for a replacement part that works 2) Install a spacer tube, made from the "bolt tube" material to space the washer and bolt head farther from the interference. This would basically be a steel tube maybe 1/8 inch long that is an extension of the "bolt tube" What do y'all think? - Rob Wolf rwolf99 [at] aol.com [You probably would be ok using a small piece of that 5/8x7/16 tube as a spacer to get the bolt head further from the weldment (let me know if you want some, I think I've got a bit left from my new mount). Another option would be to mill away a bit of the washer so it fits around the offending weld. I don't think it would be a good idea to grind away any of the weld bead, as you'd likely create a little stress riser there, and who needs that kind of aggravation. <Marv>] LC20 Engine Mount Blues Submitted by Anonymous on Tue, 01/05/1999 - 02:26 From: <CHRISTOPHER_ZAVATSON [at] udlp.com> Subject: LC20 Engine Mount Blues Date: Mon, 4 Jan 1999 20:26:16 -0600 To: <Lancair.list [at] olsusa.com> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Rob, There is no need for a spacer or washer in this installation. Let the bearing surface of the bolt rest against the tube as is. Just remember, when torquing the bolt, turn the nut and not the bolt. Chris Zavatson N91CZ
LC20 Engine Mount Blues Submitted by Anonymous on Tue, 01/05/1999 - 02:26 From: <CHRISTOPHER_ZAVATSON [at] udlp.com> Subject: LC20 Engine Mount Blues Date: Mon, 4 Jan 1999 20:26:16 -0600 To: <Lancair.list [at] olsusa.com> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Rob, There is no need for a spacer or washer in this installation. Let the bearing surface of the bolt rest against the tube as is. Just remember, when torquing the bolt, turn the nut and not the bolt. Chris Zavatson N91CZ
LC20 Engine Mount Blues
Submitted by Anonymous on