Doing the big 3... should I ground from the alt casing to batt- or from engine block

[Rkrajnov 10+ year member]

to chassis

I've heard people say both ways, not sure which is better. Also where on the alt casing/engine block do I ground? Not really sure, I'm still new to working on cars so I want to make sure I'm not doing something stupid. Pictures would be great. I've tried searching around, but haven't found anything that clearly answers my question.

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[cdc351jeferson 10+ year member]

When you pull your alt off take a mounting bolt and attatch your ground to it then go to batt neg ill grt you a pic of mine 1 sec

 

[cdc351jeferson 10+ year member]

View attachment 26536653View attachment 26536654

you should be able to clearly see my positive on the brass bolt and the other lug under the grey headed bolt is my ground from alternator mounting bolt to battery negative

 

[Rkrajnov 10+ year member]

So can I put it here? or will this not work?

 

[cdc351jeferson 10+ year member]

yeah that should work just make sure your alt is making good non rusted contact to bolted surface

 

[Rkrajnov 10+ year member]

yeah that should work just make sure your alt is making good non rusted contact to bolted surface

How should I make sure that it is? Sorry for the stupid questions haha

 

[cdc351jeferson 10+ year member]

well where your alt is touching that rusted piece just make sure theres no rust between the alt and that where the 2 touch each other . if need be remove your belt just off the alt pull all the bolts to take a peek where the 2 meet and see if its metal to metal and not metal to rust then put your lug under the bolt head and tighten it up good

 

[audiobaun 5,000+ posts]

watch this vid,should answer your questions,and done properly

 

[audiobaun 5,000+ posts]

well where your alt is touching that rusted piece just make sure theres no rust between the alt and that where the 2 touch each other . if need be remove your belt just off the alt pull all the bolts to take a peek where the 2 meet and see if its metal to metal and not metal to rust then put your lug under the bolt head and tighten it up good

That sounds like a real PITA to go through just to attatch a ground wire to the engine block and to a strut/shock bolt?

 

[cdc351jeferson 10+ year member]

Not really little extra work and it looks clean . Different strokes for diff folks //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Rkrajnov 10+ year member]

Ok so it turns out that bolt is too thick for my ring terminals. I don't know where I can get any other ones right now so would one of these bolts work instead? They're pretty convenient as they are right by my batt, but I'm not sure if they would be any good.

 

[cdc351jeferson 10+ year member]

Yea man one of those should work

 

[audiobaun 5,000+ posts]

Just to be sure to route the wire away, and to the side of the pullys,so they dont get in the way

 

[Rkrajnov 10+ year member]

Alright got everything in guys. Seems to be good so far. Car stays above 14v even when the bass is hitting hard and I'm idling around 600 rpms now. Car just seems to run smoother too. Glad I took the time to do this.

 

[gckless 5,000+ posts]

Electrically speaking, alt casing and engine block are the same piece of gear.