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Bosch alternator

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johno Learner Dubber

19 posts · joined Apr 2010 ·

#799791
Can anyone please tell me if the alternator that I have purchased with numbering K1 14V 23/51A could possibly be a 75 amp alternator as I believe it is probably a 51 amp alternator.

Is there anyway if it is a 51 amp alt that it could be upgraded to 75 amp?

Thanks
John

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#799822
No not really. Unless to machine the housing of the alternator shorter to fit a wider stator and also upgrade the rectifier. Not worth the time or effort, that is if it can even be done.

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

johno Learner Dubber

19 posts · joined Apr 2010 ·

#799886
thanks for that info but are you able to tell me at all if with that labelling it means 51 amps { as thats kind of how it looks to me , but I'm definately no auto electrician,}, as I was reading somewhere that I would have to beef up my wiring for a 75 amp
thanks for your help - seems pretty hard to find out otherwise - have tried googling but seem to hit blanks on 75 amp alternaters
cheers
john

Sides Veteran Volks Folk

2,220 posts · joined May 2007 ·

#799902
Pretty sure the 51A does mean 51 Amp's.... that's how it works for sure with Bosch generators (don't have a Bosch alternator nearby to check, and you're right about googling it)

On the wiring... well whether a stock charging wire will be an issue with a 75A can't say for sure, but if it was my car, well that wire would be getting upgraded... pretty simple job if the battery is still in the standard spot.

👍
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johno Learner Dubber

19 posts · joined Apr 2010 ·

#799904
thanks very much for this info - I appreciate it

ryana89 Officially Full-On Dubber

315 posts · joined Sep 2009 ·

#800434


Same alternator as mine, and Im 100% certain mine is a 90Amp alternator. Put 1 and 1 together and its easy to see the A follows the AMP output. But you've already figured that out😊
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68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#800452
johno wrote:Can anyone please tell me if the alternator that I have purchased with numbering K1 14V 23/51A could possibly be a 75 amp alternator as I believe it is probably a 51 amp alternator.

Is there anyway if it is a 51 amp alt that it could be upgraded to 75 amp?

Thanks
John


Hi John

All VW beetle alternators are 51 amps.. at 14 volts..

that's over 600 watts output..

which is fine for most people...

You can buy 75 amp alternators new...
as they were never installed in beetles as standard equipment..

with a 75 amp alternator, You would need to use larger cables from the alternator to the battery, and from the battery to whatever is going to use all those extra Amperes...

like a large Amplifier etc...

LEE

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

johno Learner Dubber

19 posts · joined Apr 2010 ·

#800822
thanks everyone for your replies
cheers
john

Uber Kafer Wolfsburg Wizard

414 posts · joined Nov 2009 ·

#803095
68AutoBug wrote:All VW beetle alternators are 51 amps.. at 14 volts..
..
LEE

[/b]
yes they're all 51 Amps..except when they are 55 Amps....

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68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#803103
Uber Kafer wrote:
68AutoBug wrote:All VW beetle alternators are 51 amps.. at 14 volts..
..
LEE

[/b]
yes they're all 51 Amps..except when they are 55 Amps....
That is the first 55 ampere alternator on a beetle I have seen..

LEE


PS: 55 is the size of many other OE alternators..
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---