zrokool85

i just recently purchased an amazing 87 gxl and its got some mods done to it. for one he has most of the ground mods( found on this site) done except secondary fuel rail and ecu. my question is--- is this gonna effect anything on my car having one fuel rail grounded better than the other? oh yea...not trying to be a dick but please dont give any advise unless your 100% sure of what your telling me. ive been getting some dip ***** on here. thank you

Aaron Cake

iTrader: (1)

No, it won't matter. Grounding the fuel rail is just as pointless as all the other "ground mods" normally mentioned on this site.

If you want to do grounding properly, see http://www.aaroncake.net/rx-7/grounding.htm

reatrdedspleen

I have a Buddy Club Racing Spec condenser (its sort of a grounding mod, cleans up electrical noise) and it made a bit of a difference.

But i dont think grounding the fuel rail would accomplish anything. Aaron has a good write up that he posted, id follow that.

NZConvertible

Well that's a new one. Please tell us who gave you the idea that grounding the fuel rails would do anything, so that they can be mercilessly ridiculed and banned from passing on technical info...

I'm sure most of the "grounds" the previous owner added can be removed, which will no doubt tidy up your engine bay a bunch. Read and follow Aaron's write-up on fixing up the stock ground points.

Snake oil of the nastiest kind.

sar

iTrader: (1)

And if the there are all of these grounds added, what makes you think that adding a ground to the fuel rail is needed? Does your car still hesitate? Grounding is not an end all solution. If it ain't broke, why are you trying to fix it?

Spleen: a condenser is a capacitor, it could help stabilize voltage spikes and draws - but its need and effects are questionable. On the other hand, a cdi system seems to stabilize ignition breakup at high rpm, half of that could be due to the caps stabilizing the voltage and building a stronger charge when power drops. I suppose that fuel injectors could suffer the same issues, but their lower voltage could also negate it.

(I'm not going to ask about the ecu because that ground deserves to be stronger)

reatrdedspleen

Ya know i won it for free, so its not like i lost money on it, and i didnt install it for a long time because i thought it wasnt gunna do anything. (my car at the time had a 1000watt sound system) apon installing it i noticed that my voltemeter never dropped at idle like it normaly did when the base hit, nor did the lights dim, and the car felt every so slightly faster. So i unhooked the condenser and my voltage would drop when the bass hit as it did before my lights would dim, and the car felt slightly slower. so i put it back in.

People always say that our cars have grounding problems. I followed the write up on where i should connect the grounding points. And the racing spec condenser worked.

Buddy club charges 250 or somethen like that for it.. overpriced yes.. did it work? sure, and it was free cant argue that.

zrokool85

thanks

My5ABaby

iTrader: (7)

My grounding wires are 21 years old. I don't expect them to do their job after that long. That's why people say our cars have grounding problems.

Aaron Cake

iTrader: (1)

Our cars don't have grounding problems. Well, not any worse that most other cars on the road. The grounding system in my RX-7 was fine for 20 years and has only recently been rewired as part of a much larger project. On the other hand, I have had to replace the ground straps in my 2000 Insight twice with OEM units until I got smart and made my own.

The condenser likely worked because your alternator, battery or battery connections are having issues. The condenser is just a large value capacitor that acts as a filter.

apexFD

As soon as i get my 1991 GTX from the Vancouver docks i plan on giving it a complete tune up. Redoing the factory grounds was already on my list, but cheers to aaroncake for the write up.