Just went Best Buy intall area and asked about the 8 gauge wire for the engine grounding to 4 different points of the engine.
It seems like the guys were competent about their wiring schematics and they said I'd be better off doing a one point ground with a 4 gauge wire with the shortest distance. Now, I'm confused. What are your input on this?

 

There is plenty of info on grounding kits on this site, search. Everything is DIY.

 

Obviously 4 gauge wire is much larger and therefore capable of conducting more current. The shorter the path current travels, the less resistance it will encounter so they were right on that count too. As far as grounding only one point, my opinion is that it depends. One effective grounding point will do more good than 4 points that really aren't grounding anything. 12 wires isn't necessarily better than 3 or 4 if the 3 or 4 are grounding more effectively than 12 redundant or ineffective ones.

 

I made a grounding kit out of shoe laces

 

Your first mistake is thinking Best Buy knows anything about car installation. Their tech all just pass written tests. They don't require any hands on experience or assess training levels, if you can read a book and pass a test, you can become a Best Buy Installer. Why not go with the tried and true method, whomever came up with this method of grounding has probably experimented with other variations and probably found this method works the best.
Systems on paper can operate completely different than in real life.

 

Thicker Wires = More electrons can flow
Shorter Wires = Less distance to travel, like BB said less resistance

 

I've never heard of using so many grounds before. That's just silly. All you really need is one good solid ground to the engine. If it helps you sleep better at night then use two. You can say what you want about these installers but in this case they are right.

Making your own ground wires isn't that hard and if you want, there's a couple vendors on here that will make them for you. I've made two wires for Her G37 so far. A battery to chassis and a chassis to engine. Both were made out of 4 gauge. Because I like to overdo things, I plan on making one more wire and that will be somewhere off the transmission to chassis but I haven't scoped that out yet.

 

Bingo!!!!!

Oh... My home theater guy told me that it's best to wash your car with steel wool.

 

I have to disagree with you about one thing: on a "V" configured engine like ours, it can be of benefit to ground both sides of the engine to the body. Not always, but in our case this is true. There are also other components that will benefit greatly; throttle bodies, ECU, automatic transmission housing, etc.

 

I think that guy had a Delorean. Cuz the "Back to the Future car" is made of some sort of aluminum and can't be painted. So the best thing to use to get the shine is a fine steel wool.

 

I'd like to argue with you, respectfully of coarse. I don't know much about this VQ37VHR engine. Is the block not solid all the way through. If it's like any other V stlye engine, it's one solid metal chunk. There's not much better at conducting electricity than a solid chunk of metal (if it's aluminum, even better). The only way to make it better would be to turn it into a whole bunch of strands of metal. Once the block is properly ground to the chassis, I don't see any reason to ground it again. Now if you start talking about heads (or a manifold) that need to be grounded, you are probably right. I've ran into a number of V8 engines where the heads had individual grounding straps for one reason or another. A lot of the newer V8's have coils mounted on top of the valve covers and I've heard of problems with them due to poor grounds. I imagine the same could be true of a V6. The head bolts or studs and valve cover bolts should provide plenty of current flow but things like powdercoating valve covers cause problems. I'm getting off topic here... My point is, I can see grounding heads seperately as well as the block, but not the block twice.

As far as the other components, I agree with you on the transmission housing but only because of the fact I like to overdo things. The ecu would have to depend on how bad the thing was engineered. I doubt that it suffers from a poor ground but I could be wrong. The throttle bodies, I don't think I want to talk about grounding the throttle bodies.