pjm8047
Well-Known Member
Is there any advantages to adding a groud strap between the block and the firewall? Would it help alternator output? I noticed that they stopped using firewall grounds after 69 any idea why?
I noticed that they stopped using firewall grounds after 69 any idea why?
Key point here......What would adding a proper ground elsewhere hurt? Nothing......well, my 74 got it.
Use it. Any ground reinforce is a help. Remember the bigger wire runs between batt and engine. The radiator core support barelly gets a 12 gauge wire or so.
I have both. So if ammeter doesn’t go to the discharge side im ok? Running a powermaster alternator.13-13.5 volts should be about normal on a regular operation.
I think you need to learn what charges the Battery is amperes not voltage. When you have some amperes failure the voltage comes into a weird readings. That's why I preffer AMMETER before the voltimeter.
BTW, the regulator is grounded to the body, so another reason to get that ground strap
when I said my 74 got it, I meant FACTORY installed
That works for me thanksif everything is correctly sourced and hooked, in good conditions you should be fine with centered ammeter reading. THAT'S in fact the goal! A centered reading on ammeter it means batt is in peace, neither being charged or discharged, and alternator is being able to source all the car requirements
Most wire harness vendors typically recommend to ground battery to frame and block; block to frame; body to block/heads. Make sure you are not grounding to a painted / coated surface - needs to be clean bare metal. Grounds, especially in a older vehicle, are the most common electrical issue (aside from previous owner hack jobs). A reading of 12 - 14 is fine. Good luck.Is there any advantages to adding a groud strap between the block and the firewall? Would it help alternator output? I noticed that they stopped using firewall grounds after 69 any idea why?
Is there any advantages to adding a groud strap between the block and the firewall? Would it help alternator output? I noticed that they stopped using firewall grounds after 69 any idea why?
not sure If I really got what you said Jim... but I'm gonna post what I know...
Dual field alts get a full positive field from ign switch, hence the brush is isolated. Negative brush is not anymore full fielded like on earliers being directly attached to case, so then got the negative coming from regulator in regulated form to control the full magnetic fields into the alt. The electronic reg gets the full ground/negative from chassis to then feed the negative and regulated field throught its system to the alt through the green wire.
that is what I have allways known, maybe a bit off topic, but your post got me a bit confused.
( this is at a side of the ground strap, which my opinion is, if you don have it, add it. and my 74 got it from factory )