Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: MarkCan on June 20, 2021, 17:00:03

Title: Engine ground strap
Post by: MarkCan on June 20, 2021, 17:00:03

I came across an interesting thread on the subject here;
https://www.sl113.org/forums/index.php?topic=26689.0
One thing though, it ended without a definite conclusion. There are options/ possibilities.
After examining the shrouding area I couldn’t find any remains of the other end of the ground cable in my engine bay. I’m leaning towards the short connection and factory grounding location. With the above in mind I decided to attach the other end of the cable  to the coil post. I picked up gauge 4 18inch cable in my local parts place.
I hope this will improve the electrical flow greatly.

Title: Re: Engine ground strap
Post by: Pawel66 on June 20, 2021, 17:21:40

Mark, the ground strap between engine block and radiator, fit to the block in the place shown on your picture, is only a part of radio interference suppression. So it came in the car only of the interference suppression kit was there. The main ground cable from the engine goes to firewall.

Title: Re: Engine ground strap
Post by: MarkCan on June 20, 2021, 18:32:54

Quote from: Pawel66 on June 20, 2021, 17:21:40

Mark, The main ground cable from the engine goes to firewall.

Thank you for your input. I’ll be changing the main ground to as it looks to be battle tested. As a matter of the fact I got the positive cable on order as well. The one going from the battery to the starter. It should be here tomorrow.
Pawel would you be able to post a pic of the attachment point by the radiator?

Title: Re: Engine ground strap
Post by: Pawel66 on June 20, 2021, 19:19:41

Mark, sorry, I do not have any good picture. I am enclosing both ends, but the radiator end is not really seen...

Should you need pictures on positive wire routing or source for proper brackets with black rubber, please so advise.

Title: Re: Engine ground strap
Post by: mrfatboy on June 20, 2021, 22:16:47

This photo might help.

Title: Re: Engine ground strap
Post by: MarkCan on June 22, 2021, 12:53:02

Thanks guys,
This has become a great exercise. I eliminated more if’s type connection and found another vacuum leak in the process. Engine running much better now and already quite stable by the sound of it. Definitely on the rich side. It got dark last night so I stopped before I got the actual numbers.
I think it’s time to start with the linkage tour and all the rest of the goodies offered by the site here.