Posted May 19, 200916 yr Trying to figure out what size alternator I'm going to need and how many batteries I'll need.I'm figuring at least a 250 amp alt and 2 D3100 powermasters, plus a yellow top under the hood. Will be running a Clif Designs 4800.1lx and probably a Sundown 100.2 or 125.2.Is there a way to calculate what I'll need or is this all a guessing game?
May 19, 200916 yr i'm assumin that's a 4800w amp?If this is strictly for daily drivin, get the largest alt u can get, 250-300A for your ride.For batteries- a single D3100 can keep up with that setup as long as u have at least a 250A alt.You "might" have slight voltage drop but nothin below 13.0v, lucky if u drop to 13.5 if ur alt runs at 14.9v that is.If u want utmost solid voltage possible, dual D3100s would be like the master system for your electrical needs. You still need a high output alt regardless.
May 19, 200916 yr Author i'm assumin that's a 4800w amp?If this is strictly for daily drivin, get the largest alt u can get, 250-300A for your ride.For batteries- a single D3100 can keep up with that setup as long as u have at least a 250A alt.You "might" have slight voltage drop but nothin below 13.0v, lucky if u drop to 13.5 if ur alt runs at 14.9v that is.If u want utmost solid voltage possible, dual D3100s would be like the master system for your electrical needs. You still need a high output alt regardless.The amps actually rated at 5200 watts, but I'm going to set the gain to hopefully have it much lower than that. Unfortunately, a 250 amp alt. seems to be the largest I can find and Ive checked quite a few places.
May 19, 200916 yr mechman and iraggi alternator makes 300a alts for some cars... if u got the money, usually close to 700
May 19, 200916 yr Author mechman and iraggi alternator makes 300a alts for some cars... if u got the money, usually close to 700Checked both and the highest from mech is 250 and iraggi is a 240A. I might have to see if someone can custom build one.
May 19, 200916 yr if u do, be VERY careful.Do not let someone just rewind an alt to 300A and say, ok it's done.They must upgrade everything for it to work or it will overheat and die.Need a larger case, bigger rectifier, regulator for the job, etc. and make sure if u do get a 300A alt custom that it is rated for HOT and not cold.
May 19, 200916 yr Author if u do, be VERY careful.Do not let someone just rewind an alt to 300A and say, ok it's done.They must upgrade everything for it to work or it will overheat and die.Need a larger case, bigger rectifier, regulator for the job, etc. and make sure if u do get a 300A alt custom that it is rated for HOT and not cold.Oh, I meant like asking mechman, EA, Iraggi, OhioGen, etc...not some random guy lol.
May 19, 200916 yr if its a daily driver you want to probably stcik with the 250 amp because once you go past that you will lose your output at idle whcih is very important for a daily driver
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