Does anyone know 'Ground line tuning'?

[FullThrottle]

Hi, has anyone done ground line tuning? I heard that it helps current by directly connecting - current of battery to part of engine where spark plugs are. I am trying to do so on my Kawasaki ZXR 250 but I don't know exactly where / how to connect. Also I need to find where the spark plugs, CDI and generator are. It would be great if someone can help.

[scumdog]

Double-ywe Tee Eff is ground line tuning??? dya snort it or use it on a peanna or what??? :spudwhat:

[shandawg]

CDI is under the left side tail fairing, Generator (alternator?) onder the cover on the left side of the motor, and you will find the spark plugs in the top of the head

[FROSTY:Me]

Hi, has anyone done ground line tuning? I heard that it helps current by directly connecting - current of battery to part of engine where spark plugs are. I am trying to do so on my Kawasaki ZXR 250 but I don't know exactly where / how to connect. Also I need to find where the spark plugs, CDI and generator are. It would be great if someone can help.

Sorry dude you have me stumped.
I kinda get what you are on about I think.
What you want is to run power direct to the coils from the battery so the coils get first shot at the lectrikkery.
Interesting concept but its a bit more complicated than that.
The coils generate incredibly high voltage/amperage (someone help me here)
From the 12volts the battery puts out.
There are a whole heap of other parts that the lectrikkery needs to go through before the coil.
That said --very interesting concept

[Paul in NZ]

Or is it connecting grounds to all the bits wot need to be grounded instead of relying on the crusty old engine mounts and stuff?

I do that in the Guzzi and any old pommy shit. But their wiring systems are vintage. I doubt you are going to get any measurable improvements but why not.. I could be wrong....

Paul N

[pete376403]

Hi, has anyone done ground line tuning? I heard that it helps current by directly connecting - current of battery to part of engine where spark plugs are. I am trying to do so on my Kawasaki ZXR 250 but I don't know exactly where / how to connect. Also I need to find where the spark plugs, CDI and generator are. It would be great if someone can help.

Sounds like the earth wire from the battery is connected directly to the cylinder head (which is where the spark plugs are). Usually the battery earths on the frame (somewhere near the battery) and the return path for the spark relies on good, clean, tight connections of components (ie coils, ignition boxes, etc) to the frame. If these parts are rubber mounted to protect against vibration then they need a seperate earth strap. "Ground line tuning" implies that a seperate earth loop wire is run connecting each part of the ignition circuit. And I would consider that it is a very accurate dyno indeed that could measure a difference between an engine so equipped and another engine with standard factory mounted components, provided the mountings are shiny clean and tight.

As to the location of spark plugs, CDI and generator - spark plugs are in the cylinder head, CDI (capacitor discharge ignition) boxes probably under the seat, generator usually on the end of the crankshaft, although some motors have them gear driven off the crank so they live up behind the cylinder block.

[pete376403]

Sorry dude you have me stumped.
I kinda get what you are on about I think.
What you want is to run power direct to the coils from the battery so the coils get first shot at the lectrikkery.
Interesting concept but its a bit more complicated than that.
The coils generate incredibly high voltage/amperage (someone help me here)
From the 12volts the battery puts out.

Very high voltage but next to no current. Which is why you can get a 15 ~20Kv belt off a spark plug and talk about it afterward

[FROSTY:Me]

Very high voltage but next to no current. Which is why you can get a 15 ~20Kv belt off a spark plug and talk about it afterward

Yea there was a mechanic once in a workshop I worked in.
His party trick was to use his arm kinda like a Ht lead.