Marcos Maniacs

Mark,

 

We had to replace the metal plates on my car, but only the ones which hold
the front sub-frame in place.  We discovered that the plates had shed their
anchor nuts and the guy who rebuilt the chassis had simply put large wood
screws into the holes!!

 

We decided to cut a 3 inch diameter hole in the wood box section and work
from there.  We also decided to make these plates "L" shaped so that they
come down on the inside of the box section in front of the engine mounts.
This spreads the load and gives more rigidity.  Once done you simply refit
the 3 inch disc you have cut out and glass fibre it in.

 

One way of making the electrical contact is to have a flanged washer with an
extra bolt hole for this purpose.  There is then no need to remove it.

 

I think it is a good idea to have anew keep nut arrangement, particularly as
nobody will see it.

 

Have a look on the Marcos Section of www.motorsnaps.com
<http://www.motorsnaps.com/>  

 

Best wishes,

 

John 

 

  _____  

From: MarcosManiacs@yahoogroups.com [mailto:MarcosManiacs@yahoogroups.com]
On Behalf Of MarkD
Sent: 14 January 2012 13:03
To: MarcosManiacs@yahoogroups.com
Subject: [MarcosManiacs] Wood chassis front keep nuts replace or modify?

 

  

This weekends project is to work on the rebuild of all the front 1/4x28
keepnuts which hold the metal frame and motor mounts. They had all rusted to
a point of not coming apart. I had to drill most of the heads off to remove
all the parts for blasting and painting. 
I would like to ask others who have done this repair if they just replaced
with the same keepnuts or if the made a change in design?

My concern is not the reassembly as that is straight forward, but since one
of the bolts makes a ground point for the wiring that bolt may need to be
removed from time to time to clean the contact or to add a wire. I know the
nuts will rust once again and it will become difficult to remove the bolts
should I need to do so.

I have purchase 1/4" stainless steel plate and am planning to make backing
plates which will be screwed in place from the inside and then drilled and
tapped for all the 1/4x28 screws. The stainless is non magnetic and should
not rust. This assembly will provide a much better support as well, since
the load is spread over all the area of the plate. I would also use
stainless bolts with antisieze compound.

Thoughts or comments please.

Mark