 Ground strap question…, Need to replace it? |
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| oakdalecurtis |
 Jun 20 2023, 12:31 PM
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#1
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Oakdalecurtis  Group: Members Posts: 1,325 Joined: 5-June 15 From: Oakdale, Ca Member No.: 18,802 Region Association: Central California 
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One final question on this hard starting issue. As I mentioned, I completely cleaned the ground strap connections, which were dirty, and suspect that will clear up the issue. My question is, the original strap is in one piece, not frayed, but does look old. Can age alone increase the resistance on an intact braided wire? If so, anyone know where I can get a new one?
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| Shivers |
Jun 20 2023, 12:39 PM
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#2
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Senior Member Group: Members Posts: 2,373 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
You could check it with a multimeter.
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| 930cabman |
Jun 20 2023, 12:41 PM
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#3
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Advanced Member Group: Members Posts: 3,062 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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I look a little old, but can totally rock it out.
No, do not replace if it's sound |
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| SirAndy |
Jun 20 2023, 02:00 PM
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#4
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Resident German Group: Admin Posts: 41,638 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
As long as the contact points are clean, outside patina will not affect function unless you have some severe corrosion or physical damage.
(IMG:style_emoticons/default/popcorn[1].gif) |
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| Spoke |
Jun 20 2023, 02:05 PM
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#5
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Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None
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QUOTE(oakdalecurtis @ Jun 20 2023, 02:31 PM)  One final question on this hard starting issue. As I mentioned, I completely cleaned the ground strap connections, which were dirty, and suspect that will clear up the issue. My question is, the original strap is in one piece, not frayed, but does look old. Can age alone increase the resistance on an intact braided wire? If so, anyone know where I can get a new one? @oakdalecurtis You can test the ground strap in action to determine if you're losing voltage. Disable the ignition (pull power wire to the coil) so the engine just cranks and cranks w/o starting. Have someone crank the engine while you measure voltage from the engine case to a chassis grounding point. If you get appreciable voltage like over 0.5V, then change the strap. I replaced mine with a 4-gauge strap from my flaps. They have many lengths available. |
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| GregAmy |
Jun 20 2023, 02:11 PM
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#6
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Advanced Member Group: Members Posts: 2,298 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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QUOTE(Spoke @ Jun 20 2023, 03:05 PM) I replaced mine with a 4-gauge strap from my flaps. They have many lengths available. (IMG:style_emoticons/default/agree.gif) And NAPA offers various lengths of braided strap with lug holes. I mean, if there's any question about it, for $15 why not just do it? |
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| porschetub |
Jun 20 2023, 03:39 PM
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#7
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Advanced Member Group: Members Posts: 4,698 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(GregAmy @ Jun 21 2023, 09:11 AM) QUOTE(Spoke @ Jun 20 2023, 03:05 PM) I replaced mine with a 4-gauge strap from my flaps. They have many lengths available. (IMG:style_emoticons/default/agree.gif) And NAPA offers various lengths of braided strap with lug holes. I mean, if there's any question about it, for $15 why not just do it? (IMG:style_emoticons/default/agree.gif) My car never had one as the trans was out and the car a roller. Made one from a piece of new small diameter welder cable and got a local shop to crimp the eyelets on and all sealed with heat shrink. Have a second one made up but yet to fit . |
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| r_towle |
Jun 20 2023, 06:16 PM
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#8
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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I bought a new one, then two.
Fixed it. I do think that over time they become less effective. Mine did. I’m not a pro, but I suspect the large current draw via 50 year old spot welds may no longer meet the original performance. |
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| 930cabman |
Jun 21 2023, 04:59 AM
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#9
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Advanced Member Group: Members Posts: 3,062 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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How much time/money has been spend putzing around with a ground strap? has the starter been checked for proper operation?
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| dr914@autoatlanta.com |
Jun 21 2023, 08:28 AM
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#10
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914 Guru Group: Members Posts: 7,857 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
yes and yes
a good trans to body ground is extremely important QUOTE(oakdalecurtis @ Jun 20 2023, 11:31 AM) One final question on this hard starting issue. As I mentioned, I completely cleaned the ground strap connections, which were dirty, and suspect that will clear up the issue. My question is, the original strap is in one piece, not frayed, but does look old. Can age alone increase the resistance on an intact braided wire? If so, anyone know where I can get a new one? |
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