Replacement alternator

Please tell us about your DIY projects, tips and tricks
User avatar
ricster
Patrolman 1000+
Patrolman 1000+
Posts: 5798
Joined: 13 Jan 2010 11:16
Full Name: Cedric Warner
Nickname: Cedric
Home Town: Alberton Gauteng
Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
Home Language: English
Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
Has thanked: 222 times
Been thanked: 241 times

Re: Replacement alternator

Post by ricster » 23 Jun 2010 14:05

Nicely done Christo,

So when is the next novel....ha ha....just kidding..... excellent thread, can be very handy for someone else to learn from !!
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD

User avatar
ChristoSlang
Patrolman
Patrolman
Posts: 870
Joined: 07 Apr 2009 16:54
Full Name: Christo van Rensburg
Nickname: ChristoSlang
Home Town: Pretoria, ZA
Current 4x4: Nissan 4.2 GL Patrol
Home Language: Afrikaans
Location: Garsfontein, Pretoria
Has thanked: 5 times
Been thanked: 71 times

Re: Replacement alternator

Post by ChristoSlang » 23 Jun 2010 17:46

Cedric, there's so little left to do on Chuck that I have to get my mileage on the forum any way I can :rolling:
Christo (the snake man)
1998 4.2 GL Patrol (Chuck Norris)
2007 350Z twin-turbo coupe (Batmobile)
Image

User avatar
ricster
Patrolman 1000+
Patrolman 1000+
Posts: 5798
Joined: 13 Jan 2010 11:16
Full Name: Cedric Warner
Nickname: Cedric
Home Town: Alberton Gauteng
Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
Home Language: English
Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
Has thanked: 222 times
Been thanked: 241 times

Re: Replacement alternator

Post by ricster » 07 Jul 2011 15:27

dagging up an old post of yours Christo.....
My altenator just packed up..... and now faced with the choice of beef up to run the duel batteries of just repair my existing alternator.
The current alternator is a hitachi 12V 60 amp. and see when googling that the Nivara alternator is a 12v 90 amp. Does anyone know if these 2 alternators are the same fixing points. I think the lugs are 180 deg from each other? Christo maybe you can shed a little light on this point?
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD

User avatar
Herrie
Moderator
Posts: 3740
Joined: 08 Apr 2009 07:17
Full Name: Kobus Pienaar
Nickname: Herrie
Home Town: Kempton Park
Current 4x4: 1999 Patrol 4500e GRX
1983 Datsun Safari
Home Language: Afrikaans
Location: Kempton Park
Has thanked: 70 times
Been thanked: 98 times

Re: Replacement alternator

Post by Herrie » 07 Jul 2011 17:40

Just contact Breno - there is one is Boksburg - do not have the number now! They even got me a starter for my Patrol. Check on google for their numbers.
Herrie op Safari/Patrollie
1983 Safari
1999 Patrol 4500 GRX

User avatar
ChristoSlang
Patrolman
Patrolman
Posts: 870
Joined: 07 Apr 2009 16:54
Full Name: Christo van Rensburg
Nickname: ChristoSlang
Home Town: Pretoria, ZA
Current 4x4: Nissan 4.2 GL Patrol
Home Language: Afrikaans
Location: Garsfontein, Pretoria
Has thanked: 5 times
Been thanked: 71 times

Re: Replacement alternator

Post by ChristoSlang » 07 Jul 2011 22:23

Cedric, I wouldn't spend any money on repairing or replacing that Hitachi unit.

Nobody stocks any spares for it, so when you need brushes/bearings/whatever in future, you'll be reduced to swearing again. And even if someone finds the spares and fixes it for you, you're still stuck with an underpowered bit of kit that will take forever to charge two batteries...

Chat to the bloke who sourced my Delco - he's in your neck of the woods any way!

BTW: My Patrol had a 90A Hitachi. Are you sure yours is only 60A?
Christo (the snake man)
1998 4.2 GL Patrol (Chuck Norris)
2007 350Z twin-turbo coupe (Batmobile)
Image

User avatar
ricster
Patrolman 1000+
Patrolman 1000+
Posts: 5798
Joined: 13 Jan 2010 11:16
Full Name: Cedric Warner
Nickname: Cedric
Home Town: Alberton Gauteng
Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
Home Language: English
Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
Has thanked: 222 times
Been thanked: 241 times

Re: Replacement alternator

Post by ricster » 08 Jul 2011 07:18

Thanks Christo and Kobus,

Yeah, on the serial number sticker it says 12v 60A. I'll google those people in Boksburg, and chat to the Delco dude.

Thanks again guys
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD

User avatar
Pieter du Toit
Patrolman
Patrolman
Posts: 885
Joined: 06 May 2009 15:04
Full Name: Pieter Joubert du Toit
Nickname: PJ of ook Whitey
Home Town: Welgemoed
Current 4x4: 2002 Nissan Patrol GRX TD42T CONVERSION
Home Language: Afrikaans
Location: Cape Town
Been thanked: 1 time

Re: Replacement alternator

Post by Pieter du Toit » 08 Jul 2011 09:45

Christo

Could you give me the contact details of the supplier please - I would also like to get one. Do yu think they might have a supplier in C.T.???

I did not pick up on this thread when you did the posting but I experience all the symptoms that you describe. I have done everything - from changing all the interal and external lights to led's to HID'S for my headlights and spotlights. As soon as I switch on my main beams with spots my voltage drops too low and the national luna dual charging system "falls out". Then I don't even have the aircon on.

No I definately want to replace my alternator - in fact my alternator packed up not too long ago as well - and I did ask for a 120A altenator replacement - but the sparky who did the job said there is nothing available for the Nissan Patrol. He obviously don't know his alternators or was either looking for a straight bolt on replacement.

Frans hier kom werk vir jou my vriend - ek gaan jou hulp nodig he asb. GROOT ASB!!

Groete
Pieter du Toit
MUFASA
2002 - 2010 Patrol 3.0L TDi GRX - HANDGRANADE WENT BOOM!!
2010 TD42T GRX CONVERSION - SADLY SOLD!!
Cell no: 082 803 5073
Fax no: 086 500 9333

User avatar
Peter Connan
Moderator
Posts: 5290
Joined: 10 Sep 2010 07:21
Full Name: Peter Connan
Nickname: Piet
Home Town: Kempton Park
Current 4x4: 1996 Patrol 4.5SGL
Home Language: Afrikaans
Location: Kempton Park
Has thanked: 247 times
Been thanked: 332 times

Re: Replacement alternator

Post by Peter Connan » 08 Jul 2011 10:25

Gentlemen if I may?

You may well be experiencing a different problem than you think.
Let me recount two examples:
1) My father drives a Hilux, onto the back of which is bolted a camper body. Power is from a National Luna portable battery pack mounted in the camper. The power leads leading from the engine to the battery box are 35 square mm (larger than all the recommendations) but despite this it is a constant struggle to keep enough power in the battery for the fridge to last the night. The charging system must be forced on frequantly. The alternator has been upgraded, yet the problem remains.
2) I have a PBE dual battery system in my car. I can run all the electrics I can think off, but on a trip my second battery never drops below 12.4Volt.

The reason seems to be that on the National Luna system, and due to losses in the solenoid and wires, the voltage at the second battery is a whole 1Volt lower than the alternator's output voltage, whereas the PBE system gives the same voltage or even slightly higher than the main battery gets. That 1Volt makes a huge difference in terms of how quickly the battery charges. My second battery takes 20 to 30 Amps when I start in the morning, whereas my Dad's system struggles to better 5Amps.

The problem with increasing the alternator output to compensate for the voltage loss in the National Luna system's solenoid is that the deep cycle battery ideally wants to charge at 14.5 Volts or so, but a crank battery does not like going this high. Now calculating in the voltage loss means that you have to bump up the alternator's voltage to 15.5V. But the crank battery gets it's charge directly from the alternator, and will thus sustain damage at these high voltages.

Therefore I would recommend checking the voltages at the alternator, vehicle battery and a relatively flat (run your fridge overnight) second battery. If there is a measurably lower voltage at the second battery, I beleive you will get better results by replacing your charging system than your alternator. There are two systems I know about that do not give a voltage drop. The one is the PBE, which costs about R1500, and the other is a DC to DC charger (Deltec I think) which is around R2700).
Mag ons ons kenniskry met lekkerkry aanhoukry.

User avatar
Pieter du Toit
Patrolman
Patrolman
Posts: 885
Joined: 06 May 2009 15:04
Full Name: Pieter Joubert du Toit
Nickname: PJ of ook Whitey
Home Town: Welgemoed
Current 4x4: 2002 Nissan Patrol GRX TD42T CONVERSION
Home Language: Afrikaans
Location: Cape Town
Been thanked: 1 time

Re: Replacement alternator

Post by Pieter du Toit » 08 Jul 2011 10:57

Peter

Very interesting observations you stating here. Definately something to consider........you are not the first guy to "complain" about the effectiveness of the National Luna charging system.

Christo have you experienced any problems since you did the alternator replacement with "over charging"??

Regards
Pieter du Toit
MUFASA
2002 - 2010 Patrol 3.0L TDi GRX - HANDGRANADE WENT BOOM!!
2010 TD42T GRX CONVERSION - SADLY SOLD!!
Cell no: 082 803 5073
Fax no: 086 500 9333

User avatar
ricster
Patrolman 1000+
Patrolman 1000+
Posts: 5798
Joined: 13 Jan 2010 11:16
Full Name: Cedric Warner
Nickname: Cedric
Home Town: Alberton Gauteng
Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
Home Language: English
Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
Has thanked: 222 times
Been thanked: 241 times

Re: Replacement alternator

Post by ricster » 08 Jul 2011 14:22

I spoke to Breno in boksburg....Delco 12v 145 Amp Excl pulley +/- R1700. That sounds fair. I asked about the 2V pulley and they don't know if they have. I suppose if my old one doesnt fit, then I can possibly get it machined to fit.

Christo.....If I used my existing pulley, how will that affect the charging ?? Will the revs not need to be a lot higher to get the charge to kick up over the 12 volt earth voltage for the dash light to go off?? :think: :think:
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD

Post Reply

Return to “21. DIY Projects”

Who is online

Users browsing this forum: No registered users and 1 guest