Alternators For Rb25

[Mano25det]

so recently i woke up to go to work and found i had a flat battery, i checked with my alternator and after i jumped it it was charging around 13.4, there was this strange sound under my bonnet, i thought it was a bearing, but turns out its the alternator might be diodes or the brushes, they quoted me from 200-350 to fix it i thought i may as well buy a new one, so i checked around and No one not even Bosch makes them, they make them for R31's R32's some R34's but not the one i have,

the battery i had in it was a 300 made for a R32 lol... not even the right one, i was suposed to have a 450-500.

any one else get annoyed by things like this

is the alternator dieing a big thing with the 33's

[t_revz]

so recently i woke up to go to work and found i had a flat battery, i checked with my alternator and after i jumped it it was charging around 13.4, there was this strange sound under my bonnet, i thought it was a bearing, but turns out its the alternator might be diodes or the brushes, they quoted me from 200-350 to fix it i thought i may as well buy a new one, so i checked around and No one not even Bosch makes them, they make them for R31's R32's some R34's but not the one i have,

the battery i had in it was a 300 made for a R32 lol... not even the right one, i was suposed to have a 450-500.

any one else get annoyed by things like this

is the alternator dieing a big thing with the 33's

sounds like its charging if its 13.4 which i guess was at idle. you sure the noise is from the alternator? 450-500 cca batteries are a bit overkill. something you would expect on a falcon or commodore that doesnt have reduction drive starter and couple more litres to push over. need to check alternator voltage with lights on etc to see if it dies in the ass. maybe something was left on like interior light... there would be another alternator you could use most likely but plugs would need to be changed. get new bearings and brushes fitted as the other parts either dont move or wear out. the sound prob wont be brushes but sometimes when a diode dies and not running on a phase can cause funny sounds.

[tiberis]

if brushes are worn it is pretty easy to tell.

if they are completely gone, your battery voltage won't be up at 13.4, because there is no power coming in from the alternator.

if they are slightly worn, the voltage should dance around a bit and not really be stable.

I recently had the alternator in my 33 die, was a case of one of the diodes packing it in so the system always had like a 3A current draw.

so maybe check that? make sure your battery has some charge then disconnect one of the terminals and put an multimeter (set to 10A or something to be safe) in series and see if there is any current draw while the car is off.

i did hear an odd whine kind of noise when mine was playing up, but it wasn't very loud.

They aren't too hard to replace either, you could even get away with not taking off all the other drive belts if you just loosen that one and let it hang (or do what i did and use it as an excuse to replace them all because they were old >.< )

[Mano25det]

haha yeah so turns out, i was at my girlfriends parents place when it died, her dad is an auto elecie so he had a look at it for me,

we pulled it off and it was the diodes because when it was running with the belt on but the charger wire off it made no sound, so i took it off and called every place i knew, no one made them, i had to work monday so my girlfriends mother took it to an auto electrical place that specializes in alternators, they said they could have gotten the diodes from a chinese company that makes replacements but they did not trust em, they had an alternator off of a mazda they used lol.

purrs like a kitty now so happy was not to expensive either,