I need to know if the bolts that attach the engine mount to the  lower
    corners of the firewall can inserted from the back with nuts on  the
    engine side? thanks, Jerry

    Jerry
    I don't know, off hand. I have my bolts installed with the  heads on the
    engine side. I suppose you could reverse them, I don't recall  if they
    are nyloc nuts, which is a no-no in the engine compartment. How  far
    along are you?

    Brian Trubee


I think that you can get all metal lock nuts. I don't think there  is any
practical reason that you couldn't have the bolts inserted from the
cockpit side. I am only speculating that it wouldn't be a good idea to
have the nyloc nuts exposed to the engine compartment heat. But  even if
they were, you could probably use them and put some sort of insulation
on them if you were concerned about the heat.  I beleive that there  is a
regulation out there that prohibits nyloc nuts in an engine  compartment.
I am at work, when I get home tomorrow, I'll try to find and cite the
regulation.

Brian Trubee

Brian,  I was not worried about heat affecting the nut,  That can be
handled with castellated nuts and cotter keys or with metel lock nuts
as you have pointed out.  I was seeking assurance that there is no
structure behind the firewall that would prevent inserting the
bolts.   2.5 inches clearance is needed.   Jerry

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