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Need help on Alternator for CU 2.0l ...
Posted: 03 Aug 2021, 18:20
by danisaez
Hi all,
been through the wiki and searched the web for hours, but to no avail...
I've got a 1980 VW BUS T3 running a CU 2.0l Aircooled engine, my current alternator (45A) is starting to get "tired", as I have 2 batteries I'm in search for a more powerfull alternator I can install in it. The thing that I'm struggling to find it, can't seem to find any suitable alternator... does anyone know of any more powerfull model of alternator I can install / adapt ?
Thanks all...
cheers, Dani
Re: Need help on Alternator for CU 2.0l ...
Posted: 03 Aug 2021, 18:50
by Mocki
I’m not sure there is a bigger alternator that will fit with the CU and it’s fan
however , 45ah should do your job , assuming you have lead acid batteries, having a 65ah alternator wouldn’t be any advantage frankly , the way lead acid batteries charge , and the way alternators work .
Re: Need help on Alternator for CU 2.0l ...
Posted: 04 Aug 2021, 08:24
by davidoft1
T2 type 4 engine, which is almost identical to the cu has a 45 and 65 amp , I’ll see if I have one to compare though I do t think it’s very much different to the water cooled one
Re: Need help on Alternator for CU 2.0l ...
Posted: 04 Aug 2021, 09:34
by danisaez
That'd be great !! thx!
Re: Need help on Alternator for CU 2.0l ...
Posted: 04 Aug 2021, 09:40
by danisaez
Mocki wrote: ↑03 Aug 2021, 18:50
I’m not sure there is a bigger alternator that will fit with the CU and it’s fan
however , 45ah should do your job , assuming you have lead acid batteries, having a 65ah alternator wouldn’t be any advantage frankly , the way lead acid batteries charge , and the way alternators work .
Main battery is still lead, but secondary will shortly be LifePo 105A ...
Re: Need help on Alternator for CU 2.0l ...
Posted: 04 Aug 2021, 18:51
by bigherb
Option was a 65A alternator. Very rare, but can be made from a 45A air cooled alternator, using the rotor and front plate from the 45A and the body and stator from 65A water cooled alternator.

Re: Need help on Alternator for CU 2.0l ...
Posted: 05 Aug 2021, 06:25
by danisaez
bigherb wrote: ↑04 Aug 2021, 18:51
Option was a 65A alternator. Very rare, but can be made from a 45A air cooled alternator, using the rotor and front plate from the 45A and the body and stator from 65A water cooled alternator.
That's a nice option!! thx