please help charging issues on boosted lsx
please help charging issues on boosted lsx i have a 02 camaro ss with a 370 ci and a s484 on it. it made 800 wheel at 16 lbs but my volts keep dropping off so i am running out of fuel. what alternator are you buys using on big hp boosed cars. i have to have a stock size because of lacation and room. thanks alot
How many amps is the alternator you have now? I take it you've checked the belt condition. Check grounds and do voltage drops all the way back to the battery. Bad grounds can do crazy things. Make sure there's no powder coating or anything on any brackets used for grounding. Then there might be an overdrive pulley for the alternator as well.
its a stock 105 amp. i have a 8 ga hotwire kit to the pumps. i have checked all grounds. i have my fans on a switch. with them on when we did a pull the volts dropped as soon as it hit boost. we did a pull with them off and the volts didnt drop till 6000. belt is tight and brand new
Is the volts dropping b/c it cant keep up or is the alternator cutting out and your on batt voltage? I have an issue with the alternator turning off after ~6000 rpms.
with my fans on it drop at about 4500 rpm ,with them off it was like 6000. volts are going to 11.6 when they drop off. were thinking that the altronator is to small and cant keep up. pumps are two 450 fed by a 8ga wire
The pumps are going to draw more as you up the demand. Which makes sense with what's going on. If voltage was staying up and you were losing pressure, I'd suspect a wiring issue. But that's not the case. Sounds like an alternator to me. Don't rule out a bad battery either. A bad battery can affect the charging system as well. (I'm side you knew that though). Good luck.
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thanks for the help, i have replaced almost everything on the fuel side. regulator, in 1300 injectors all wiring , all 8 an fuel lines, fuel filters. thinking it was a fuel issue from a restriction.
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From: Norn Iron
For years I had no problem with my alternator, even had it repaired after a failure ( PAS leak killed it )
Next time I replaced it with a new unit mainly for convenience. This one would always stop charging about 6k.
So repaired and refitted the old again....another few years pass and again it failed. Same place repaired it locally, and all seemed well. Except now over 6k it would stop charging too.
Clearly it's something to do with the regulator/rectifier inside that it doesnt like.
I bought a 170A unit from these guys, and also had them fit a slightly larger pulley to reduce alternator speed.
https://alternatorparts.com/cs130-cs...ternators.html
Been using it last 2-3 years and it's been perfect
Next time I replaced it with a new unit mainly for convenience. This one would always stop charging about 6k.
So repaired and refitted the old again....another few years pass and again it failed. Same place repaired it locally, and all seemed well. Except now over 6k it would stop charging too.
Clearly it's something to do with the regulator/rectifier inside that it doesnt like.
I bought a 170A unit from these guys, and also had them fit a slightly larger pulley to reduce alternator speed.
https://alternatorparts.com/cs130-cs...ternators.html
Been using it last 2-3 years and it's been perfect