[C320-list] Bolt size specification needed, please

[Irving Grunes]

Greame
For what its worth
A 14 mm spanner equates to a 9/16 in bolt head.
That bolt head corresponds to a 3/8 inch (Diameter) lag bolt or any bolt
for that matter.

Irv Grunes
2001 #851


On Fri, Nov 14, 2014 at 3:14 PM, Graeme Clark <cg at skyflyer.co.uk> wrote:

> Thanks for the suggestion to plug the old holes with epoxy - why didnt i
> think of that!  I guess you need to take care to ensure there are no voids
> trapped in it though. The main reason I wanted to re-use the existing holes
> though was to avoid the need to lift the engine to any great degree. I
> figured that if I can do one cormer at a time I can slip the old mounts out
> and the new ones in.
>
> I am not using tougher mounts but different ones from R&D to replace the
> original Yanmar ones. The previous owner didnt tighten his fuel line
> properly and a small weep of diesel fuel dripped down onto the mount and
> has disbonded the rubbed from the metal (as well as saturating some
> woodwork, the aft cabin carpet and so on!). The R&D mounts are about half
> the cost of yanmar and have the benefit of being exact replacemenst in
> terms of the hole drilling pattern, as well as being fail safe should the
> boat ever invert (!!) the engine cannot detach from the  mounts. Also they
> are protected should a fuel leak re-ocur. However instead of being about
> 1/4” thick where it attached to the bearer, its about 3/8” hence the need
> for a slightly longer bolt.
>
> original mount style here http://hydroweb.com/photo-20.jpg
>
> R&D style here
> http://www.asap-supplies.com/web_images/Products/Products/large/207070.jpg
>
> Graeme
>
>
>