Topica Loopframe_Guzzi Archive
 

Subject: Re: engine grounding

Author: Martin Cooke

Date: Mar 6, 2002, 10:44 AM

Post ID: 1709791086

whatever. it depends how you do it.

don't forget to clear paint from around bolt that fixes battery tray to
frame and any other earth points too.

the idea is to get a connection from battery to starter motor that will take
a high amperage.

cookie

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I think that the grounding bolt itself conducts most of the electricity
to the frame/engine rather than the contact between bolt head and
battery tray. The battery tray needs clean contacts on both sides;
between the bolt head and the top of the tray and on underneath side
betwixt tray and tranny.

A good clean bolt, shiny grounding connector, and clean threads in the
tranny will work wonders. Eastwood sells a ground-up copper in a grease
for both corrosion prevention and electrical conductivity. Since I have
two Italian cars (Alfas) and a Guzzi, I use the stuff everywhere there
needs to be a good ground. And if you think that you do not have good
grounds, there is nothing wrong with establishing your own grounds; you
can never have enough grounds!

Bruce

'72 Eldo

Martin Cooke wrote:

 you must make sure you have a good electrical path between engine &
frame.
 
 best way is to remove a circle of powder coat around boltheads on
battery
 
 tray with some kind of counterbore. then use internal star/shakeproof
washers & silicone grease under boltheads to ensure good connection.

don't forget that the generator will use this as ground path, also very
large power draw from starter motor.

cookie

----- Original Message -----
From: "John Prusnek" <spaj-@raex.com>
 I'm just getting ready to plug my '69 Ambo engine into the newly
powdercoated frame, and was wondering if the surfaces between the
engine
 
 
 and the frame need to be cleaned up for a good electrical ground. I
know
 
 
 that the bolts that hold the battery tray to the tranny serve this
function, and that the regulator is grounded to one of the toolbox
bolts, and that the rear fender should be grounded to complete the
circuit for the taillight. Am I missing anything else here?

John Prusnek

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