Grounds are so overlooked, but so important.
Run a heavy jumper from engine block to cowl
Solder the terminals, scrape steel until shiny, use a stainless screw, and
paint over to prevent corrosion. Run a heavy jumper from block to frame,
laugh at that dizzy thing that goes to negative cable, it's fastened to
painted metal with a sheet metal screw
Good idea but dont solder, Use a crimp on terminal or purchase a grounding
strap. If there is a substanial amount of current flowing in the ground
conection it will melt or at least crystalise the solder.
That much localised heat can easily be developed, solder melts in the
neighborhood of 350 F and is weakened at a lot less. Temps that can be
easily reach under the hood of a car even without current in the circuit.
Solder is a relatively poor conductor compare to to copper and it cant
handle the current in a alot of ground circuits that can easily be in the
range of 10 amps or more. You only get unreliable crimp connections when
they are installed improperly. This is usually cause by using the improper
sized connector, poor or improper tools or the person doing it doesnt know
how. This is proven by the fact that it has become the industry standard for
connections in saftey related componets. Its illegal to make the connection
you discribed in critical wiring areas of an aircraft.
I see you waffled from crimp to crimp and solder. This can be good provided
you did a very good crimp job to start with so no solder is drawn into the
wire to connector joint but if you did this you would not need the solder.
The first thing anyone who does electrical soldering is suppose to learn is
that the solder is not there to conduct electricity. Its just there to hold
the parts together. Of course there are acceptable exceptions to this such
as electronic assembly where soldering has been proven reliable enough for
current loads in the milliamp range and vibration is not a problem.
This is why aircraft builders dont solder terminals, NASA doesnt do it and
your house isnt wired with soldered connections.
Really? And how poorly made is that joint? I used to work in a plant
where we routinely repaired 2300 volt lines, carrying over a 100 amps,
with solder joints.
Crimp on connectors are subject to vibration, and much more prone to
breakage than any solder joint ever hoped to be. Note, I am not disputing
using a crimp connector for the ground strap, as it will work just fine.
I am simply debating your claims about solder joints.
"They that can give up essential liberty to obtain a little temporary
Bet you didnt use 60/40 solder.
Per the NEC it is soldering that makes these joints more susceptable to
vibration. When joints are soldered extra care most be taken to make sure
wires do not flex at the connection. Situation is even worse when the joint
is not properly soldered. Usually this means allowing the solder to flow to
far up the wire and under the insulation. The wire will break right at the
edge of the solder. Learned this many years ago the hard way. To have
soldering improve a crimp- on connection it really has to be done right.
This means having the knowledge and exprience to do both the crimp and
solder right. I will admit that good to mediorce soldering is better tthan a
bad crimp and when done properly solder is excellent for sealing a good
crimp job where it is exposed to water and crud.
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