Big 3 Upgrade: Planning Stage (Input Encouraged)

[The Architect]

Originally Posted by talnlnky

belt slippage is a real issue...i've seen it before... When a big bass hit happens, large voltage dip causes the alt to engage and try to make a lot of power.... which means it puts a large load on the belt... if the belt is loose, even the slightest bit it may slip.

Saw this in a durango with six 15's and a 2200rms amp. Every time he cranked it we'd hear a squeal for a few seconds.... finally took a look at the belt and it needed tightening.

your alt can do what.... 280, 300 amps... that alt is very capable of putting a big load on that belt. I would think the belt would have to be even tighter than stock to ensure the belt didn't slip.

The only time i ever hear a belt squeal is when i first turn on the car, other than that i cant hear or notice it at all during hits or anything and ive been outside the car for them.

as soon as the new belt comes in ill allot some time to swap it and ill make sure to have someone very strong with so as to get a really fkn tight belt.

is over tightening something to worry about because im not sure what threshold to restrain to.

[talnlnky]

i really don't know if you can have a belt too tight....

for reference... i've never heard my belt squeal. I also only have a 150 watt amp in my car.... and have never ran my battery low. I want this stock battery to last me 5-6 years.... I'm a cheap bastage.

[The Architect]

well this morning when i started my car and started monitoring voltage a saw a drastic difference in behavior from my electrical system.

for one the voltage hung around 14.45-14.5 for about 3 minutes or so before calming down to 14.3-14.4 and then finally stayin at 14.35/6 which is....very nice and unexpected.

The voltage seems very stable also (with the occasional hiccup) even with loud music and at idle in Drive it stays around 13.6-13.8 and in P or N its around 13.9-14.1

I dont know what to attribute it to but im about to go redo as much of my engine wiring as i can for preventative maintenance before it gets dark.

[talnlnky]

Originally Posted by The Architect

well this morning when i started my car and started monitoring voltage a saw a drastic difference in behavior from my electrical system.

for one the voltage hung around 14.45-14.5 for about 3 minutes or so before calming down to 14.3-14.4 and then finally stayin at 14.35/6 which is....very nice and unexpected.

The voltage seems very stable also (with the occasional hiccup) even with loud music and at idle in Drive it stays around 13.6-13.8 and in P or N its around 13.9-14.1

I dont know what to attribute it to but im about to go redo as much of my engine wiring as i can for preventative maintenance before it gets dark.

hmmmm....

[The Architect]

i mean just last night i reattached my amps ground with a set screw super duper ring terminal from knu konceptz and drove it down into the frame pretty well but thats the only difference.

[goku87]

At work we call this FM...

F**&ing magic lol

[talnlnky]

if your checking voltage at the amp... then the new ground could've made a difference... but if you are checking it from a fuse box, or direct from the battery that wouldn't have made a measurable difference.

[The Architect]

Originally Posted by talnlnky

if your checking voltage at the amp... then the new ground could've made a difference... but if you are checking it from a fuse box, or direct from the battery that wouldn't have made a measurable difference.

well ive done both, when driving ive got the probes to the DMM inserted directly into the amps 1/0 cable but for testing purposes i was at the engine bay with the dmm at the alt and batt so idk.

Im now redoing all the engine bay connections to be 100%

[The Architect]

some up to date engine bay pics with 95% finished electrical

[goku87]

Very snazzy wire rap. Where did you pick that stuff up from?

[The Architect]

my work, its just .5" flex guard or cable guard etc.

this place has some http://www.electriduct.com/Braided-Sleeving_c_148.html

[sqcomp]

Flexo PET...it's from Techflex. Great stuff. Partsexpress sells it as well. I'd love to see these pics that A has put up but this government computer blocks them...

I'll have to wait until tonight to look at them.

[NHYarisFan]

Hi all i did my big 3 this past fall just got my new camera so here we go!

[sqcomp]

...thread rising from the grave!

Heck, I'll join in on the Big 3 fun:



























I'm trying to find one more pic...I think it's the engine to chassis ground...

[fnkngrv]

great pics and along with the MPG bump, which I totally believe because I know with my current draw (pardon the pun) I have lost MPGs, do you think that this affects power/torque band stability?

[NHYarisFan]

Nice and clean sqcomp! i need to change out my bolt on the alt ground its a bit rusty, dont forget the no-ox keeps it clean

[NHYarisFan]

sqcomp do you have a fuse from alt positive to battery positive? Good to have one there. Hate to see a short and fire under the hood

[sqcomp]

I'm looking at new battery terminals that will have mini ANL ports much like my distro block in the back. I'll be having the new terminals custom machined to fit my exact needs. These street wires terminals are nice and all but really a dime a dozen in my world.

My MPG got a bump of two when I first put the additional wire on. That changes with 150 lbs of stereo gear installed and all that fiberglass is the trunk. My last road trip netted me 42.735 MPG. Not bad for not being a hypermiler IMHO.