Big three Upgrade
- Thread starter Paradox
- Start date
wasteoffilm
Member
I believe that's for the Cruze, not the Sonic.
SuperSonicRS
New member
I thought the big three referred to battery, alternator, and ground. Do we have an aftermarket high output alternator available yet?
inm
Member
There are a lot of places that will respin an existing one, but no specific ones are manufactured for use yet.
The Big 3 refers to 3 specific cables.
Alt -> Battery
Alt -> Ground
Battery -> Ground
ScarabEpic22
Member
inm
Member
Paradox
New member
I actually got one made up, produces ~230 amps at 1300 rpm. I tried mechman alternators, ohio generators, dc power, and about 3 or 4 more companies and they won't make it for the sonic simply because our crankshaft pulley is too small. Even with an overdrive pulley it wouldn't produce enough amperage at idle to charge the battery, its actually in a negative state of draw. Luckily for me, I had a tune from Trifecta that bumped the idle to 900rpm and with that jump in rpm it was possible. I purchased the alternator from Singer Alternators, lifetime warranty, a good guy, he actually spent 2 months testing different things for me to see what was the best at idle and best charge curve. Anyways, i'll be throwing it on in the next 2 months or so, have to get everything for the system.
About the positive cable, I just traced it, goes from the alternator to the positive post on the battery, but on the back end , then goes to the battery, and then from the battery through the 80A fuse to the fuse block.
Last edited:
Paradox
New member
I know a lot of people actually put the negative on the alternator, technically, it should be the big 4 upgrade. The alternators creates positive and negative current and it helps discharge the negative current a lot better if its attached to it rather then finding the negative connection of the block. Helps a lot with the heat too.
https://www.youtube.com/watch?v=K3EFGlHPFDk
ScarabEpic22
Member
Happens to the best of us!Havent seen that before, but doesnt mean it's not done. Have to look into it a little more.
schofell84
New member
Has anyone done this yet? It always worked wonders on used cars I bought. the headlights seem to dim at idle when I play with the heater and things.
sonic_braaappp
New member
the heck is the big 3 upgrade and what's it for?
turbo_slim
New member
If you read, it's upgrading wires from the alt to batter, block to ground, and battery to ground.
Upgrading the wires helps in situations like the one above your post. Lights dimming when messing with heater controls and the like.
Helps with stress in the electrical systems
Sent from my iPhone using Tapatalk
Upgrading the wires helps in situations like the one above your post. Lights dimming when messing with heater controls and the like.
Helps with stress in the electrical systems
Sent from my iPhone using Tapatalk