1)This board is populated by people who appreciate good english. Use punctuation and spread out your verbal skid mark into sentences please. Not trying to be mean, but many board members will not respond to a post written like yours.
2) Do you mean 8-9 fuel ratio, which is rich, or 8-9 v, which is low voltage? How are you getting these numbers?
3)If your battery is in the back, you may have a cable issue. Many battery relocation kits come with a too small cable that cannot transmit necessary amps at all times, under heavy load, when hot, etc. Put one tester lead on the + terminal on the battery, and one where the cable connects in the front. Disable the ignition or fuel system. Crank the car and observe the voltage reading on the meter. Anything more than a volt or two is bad. 3+volts is very bad.
4)Previous poster stated alternator provides all power to the vehicle once it is running. While this is basically true, it isn't the whole story. (Apologies to people who have looked at the vr-4 wiring diagram for the charging system, I haven't.)
[*]1)Many cars use the battery voltage as an imput to a module or directly to the generator to tell the generator how much voltage to create.
[*]2)Many charging systems use power from the battery to excite the generator. Unless it is built a certain way, the generator will do a shitty job self exciting if the batt is removed.
[*] 3)The battery provides power under heavy load conditions, heavy accel, headlights, thumping stereo, etc. While the generator can and does provide lots of amps over time, it may not have sufficient output to meet peak demand.
[*]4)The battery acts as a capacitor, softening voltage and amperage spikes and protecting wiring and computers in your vehicle.
5)Is it possible that your "oil everywhere" got onto cables or into things it shouldn't have, causing your condition?
6)Apparently you can get a good baseline over at
road race engineering