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Changing from a Generatio to an alternator

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70dubby Learner Dubber

1 post · joined Dec 2009 ·

#752031
Hello,

I have a 70 Kombi and my Geneartor has crapped itself.

I want to go to an 75 amp Alternator instead of replacing the Generator, is this wise? If so what do I need to be aware of? and do I need to swap any other gear either than the Gen and replace it with the Alernator?

Will there be any performace gains? basically what are the differences between the 2

Any advise is welcome.

Cheers,

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

11,654 posts · joined Aug 2002 ·

#752039
Hi
No gains...
just fully charged battery all of the time...

If Your engine is one similar to a beetles - 1600..

then you need to change the generator stand to an alternator stand.. they are different..

You may have to change the fuel pump...
depending on what pump is fitted..
if its up against the alternator You will need a late model pump..

The alternator does use the same pulleys but a different sized belt... 11.3 x 912mm

the standard sized type one engine Alternator is 51 amps..

a 75 amp alternator is NOT necessary... just more money..

mick motors in Brisbane sell a kit...
most VW shops who advertise in VWA Magazine should have an alternator...

cheers

LEE

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

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

11,654 posts · joined Aug 2002 ·

#752040
My engine will look slightly different to Your kombi engine..

I don't have a standard fuel pump so I can't show You that..

All an alternator does is charge the battery more/faster and puts out more power then the generator...

Your Generator has bearings and brushes...
if either of these fail or wear out Your generator just needs an overhaul..

so if You haven't had flat battery problems , Its maybe cheaper to get it fixed...

try an auto electrician for a quote and also get one from a VW shop who advertises in VWA Magazine....

go to the cheapest...

cheers

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

colonel mustard Son of Jim - Creator of Good

2,829 posts · joined Feb 2009 ·

#752041
are 70's kombi's upright engines??

Lee is right, its all in a kit. Classicveedub usually have cheap kits available.

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

11,654 posts · joined Aug 2002 ·

#752045
They may not be Jason...

they may be flat motors...

in which case You will need to have Your Generator fixed...

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

colonel mustard Son of Jim - Creator of Good

2,829 posts · joined Feb 2009 ·

#752047
Yeah, as far as i know... if its a flat motor you would get it rebuilt..... not 100% there though.

if its a type 1 engine, upright and looks sort of similar... when you change to an alternator, you need to make sure you have an alternator style fuel pump. make sure you get the right length pushrod for it too, as they are/can be different. 🙂

dekkerboy Slammed & Awesome Dubber

96 posts · joined Oct 2009 ·

#752308
I would just get a standed alternator.