Grounding Kit for 370Z

Chuck33079 · 10-10-2013, 09:51 AM

Quote:

Originally Posted by Bauran

I'd think that with very little research a person could build one of these in an hour and spend no more than $35-40 on it.

For the cost of some wire, terminals and heat shrink tubing, it's worth it. For the $100+ companies charge it's pretty obscene.

UNKNOWN_370 · 10-10-2013, 09:56 AM

Quote:

Originally Posted by tiger123

Well the general consensus here is that this is snake oil with the exception of UNKNOWN370Z.

Guard Dad, since you have a 7AT, did you notice any difference with the shifting as pointed out by UNKNOWN370Z?

mine is an auto... It has a slight but noticeable increase in shift time.. from what I've known foryears. This is snake oil on a MT.

onzedge · 10-04-2013, 07:09 AM

Quote:

Originally Posted by Guard Dad

Was included with my G3 intake as part of a promotion. It's like chicken soup when you have a cold, it couldn't hurt.

Tribalpinoy91 · 10-03-2013, 08:01 PM

I mean **** just look at what the product is and what the claims are. C'mon man!

ZMan8 · 10-10-2013, 11:59 AM

The grounding kit on my 02 civic helped it greatly, but I don't think it would do noticeable things to the Z. On the civic, every time the radiator fan comes on, the head lights dim, the radio/dash lights dim, etc.. Post grounding kit, I don't have these issues. The Z, IMO, is much better wired OEM than the 02 civic.

Chuck33079 · 10-10-2013, 12:01 PM

Quote:

Originally Posted by ZMan8

The grounding kit on my 02 civic helped it greatly, but I don't think it would do noticeable things to the Z. On the civic, every time the radiator fan comes on, the head lights dim, the radio/dash lights dim, etc.. Post grounding kit, I don't have these issues. The Z, IMO, is much better wired OEM than the 02 civic.

I'd think that it was more age related. Did it do that new, or just when it was old and tired?

ZMan8 · 10-10-2013, 12:05 PM

Quote:

Originally Posted by Chuck33079

I'd think that it was more age related. Did it do that new, or just when it was old and tired?

I didn't own it new, but from my research, the stock grounding was very poor so the light dimming would occur from the factory.

EDIT: I will add I made my own 8 gauge grounding kit. cost $20

my2004Z · 10-10-2013, 12:11 PM

I agree that adding a grounding kit wouldn't hurt if the circuit design is sound. You are dealing with impedance and capacitance possibilities that could degrade and/or delay signal integrity. Most of the time this happens at the connector or terminal especially if exposed to the elements. Cleaning the contact surfaces would solve the issues if you could actually get to all of them. Since you probably can't then a grounding kit could help get your Z back to stock form.

Most electromechanical systems have a specification for point to point impedance levels (usually in milli-ohms) and this is what should be measured since there are too many variables involved with how this may or may not affect vehicle performance. You never know, someone in the assembly line could have used the wrong type of conductive grease and your car never reached it's stock performance level to begin with.

Red__Zed · 10-10-2013, 12:30 PM

Quote:

Originally Posted by ZMan8

The grounding kit on my 02 civic helped it greatly, but I don't think it would do noticeable things to the Z. On the civic, every time the radiator fan comes on, the head lights dim, the radio/dash lights dim, etc.. Post grounding kit, I don't have these issues. The Z, IMO, is much better wired OEM than the 02 civic.

Yep, the old civics didn't have return wires from a number of components. Adding a grounding kit was like upgrading to what the a has stock.

Maddog · 03-08-2016, 04:45 AM

I used to think it was pointless , but we have noticed a reduction in electrical "noise" when fitting an earthing kit to 350z's, whether there is any tangible performance benefit I dont know

A wise man once told me when I was drag racing that you couldnt have too many earths

GMB14U2NV · 09-14-2016, 04:09 PM

So this past weekend I took the time and built my own grounding kit and found that there is a slight - and I do mean slight - change in the car.
After careful research here on the forum and weighing all the Pro's and Con's and yes, even the positive inputs and negative trashes, I elected to do this mod. What I found was the other available kits at 89.00 and up are really only scratching the surface. Let me cover the details for everyone A to Z....

I had been experiencing hard shifts and weird upshift and "pause power" delays in throttling during the last 4-5 weeks. So I figured what the hell - Right?

Now I can't really speak for Stillen's kit, or any other kit for that fact. I built up my own using Stereo shop relationship and price trolling via the WWW. But I have seen a change in this car and it is definitely noticeable. I also believe that since the car was bought used - I know the previous owner took cosmetic care of the car, but really ragged on it via throttle and driving hard.

Personal build:
1. Get a 4 or greater connection point battery terminal clamp. Gold Plated.
(I used a Stinger 4 point with 2 4ga and 2 8ga connections) $9.99
2. Got 30ft of 4ga COPPER - OXYGEN FREE! - only wire
(have a friend at local stereo shop - so got wiring for a deal) $30.00
3. 20ft of 8ga COPPER - OXYGEN FREE! - only wire
(same deal on wire listed above) $15.00
4. Got all the 4ga and 8ga gold plated crimp eyelets from his shop $10.00
I also had a few 8ga stainless eyelets in the garage.
Also had soldering iron and higher grade RC solder on hand.
al said and done was at 70.00 in all spent.

Step A: I took 2 8ga connections from battery terminal to Throttle bodies.
Step B: Then I took 2 4ga runs from battery and have one to the front of the engine block. The other goes down below to tranny housing near engine bell.
Step C: Added runs to the rear throttle positioner and the other ground points in the engine area from the front engine ground points.

Now I also scuffed the metal on the engine block points and also on the Fender points. Then took the points and gave them a "meshed - ring" type of interconnection through-out engine bay.

I've given pictures to give the visuals for everyone - but I have to mention that the kits online never had a connection going to the cam throttle positioner? at back of the motor and also to the Transmission itself. The part on the back of the engine is the part that took the car down for a week and a half running it in safe mode when gassing it.....

Since I made all these connections and added some points that the kits do not have on their set ups - I can honestly say I have seen a change in the car. Snappier launches and a heck of an improvement in shifts up and down while in traffic. And there is absolutely zero electrical noise showing on the scope now - or heard through the speakers.

I do agree it is really a cosmetic mod - and really for looks. But I got to be honest - I saw a change in my car and I honestly thought I wouldn't.
There was some corrosion or build up on the terminals and points that saw moisture. So in effect I had a dirty ground in the car's system. My purpose was to get some cool looking red wire up there to go with the rest of the upcoming mods. So my opinion is 75% cosmetic and 25% function - and that is if you have a car that saw moisture or had corrosion or loose grounds.

Just thought I'd share this in case anyone see's they might be shifting erratically in traffic, or have hard thunky shifts or just see that throttle void or lack of torque once in a while.

Week after next the Level 10 components go in. Then I'll see if there is any more change other than the obvious - LEVEL 10 v-body and Torque conv.

10-10-2013, 11:59 AM	#5 (permalink)
ZMan8 A True Z Fanatic Join Date: Oct 2011 Location: Chicago, IL Posts: 5,844 Drives: 10 370z 40th M6 Rep Power: 659	The grounding kit on my 02 civic helped it greatly, but I don't think it would do noticeable things to the Z. On the civic, every time the radiator fan comes on, the head lights dim, the radio/dash lights dim, etc.. Post grounding kit, I don't have these issues. The Z, IMO, is much better wired OEM than the 02 civic. __________________ 2010 370Z 40 Anniv., 6 MT \| Fast Intentions \| Swift Springs \| SPC \| Z1Motorsports \| JWM \| Redline Oils \| 35% Window Tint 2015 Mazda6 \| 370ZChicago: Chicago Area Cars & Coffee

10-10-2013, 12:11 PM	#8 (permalink)
my2004Z Enthusiast Member Join Date: Apr 2009 Location: New Mexico, USA Posts: 285 Drives: 09' 370Z w/Sport 7AT Rep Power: 37	I agree that adding a grounding kit wouldn't hurt if the circuit design is sound. You are dealing with impedance and capacitance possibilities that could degrade and/or delay signal integrity. Most of the time this happens at the connector or terminal especially if exposed to the elements. Cleaning the contact surfaces would solve the issues if you could actually get to all of them. Since you probably can't then a grounding kit could help get your Z back to stock form. Most electromechanical systems have a specification for point to point impedance levels (usually in milli-ohms) and this is what should be measured since there are too many variables involved with how this may or may not affect vehicle performance. You never know, someone in the assembly line could have used the wrong type of conductive grease and your car never reached it's stock performance level to begin with. jamtinge likes this.

03-08-2016, 04:45 AM	#10 (permalink)
Maddog Base Member Join Date: Dec 2013 Location: Uk Posts: 94 Drives: 2012 370z GT a/t Rep Power: 12	I used to think it was pointless , but we have noticed a reduction in electrical "noise" when fitting an earthing kit to 350z's, whether there is any tangible performance benefit I dont know A wise man once told me when I was drag racing that you couldnt have too many earths __________________ Eibach sway bars and 25mm spacers, Stillen kit , Level 10 trans, Quaife diff

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10-03-2013, 08:01 PM	#4 (permalink)
Tribalpinoy91 Track Member Join Date: May 2012 Location: Las Vegas Posts: 607 Drives: 370z PW Rep Power: 14	I mean **** just look at what the product is and what the claims are. C'mon man!