Alternator swap

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kiwi
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Alternator swap

Post by kiwi » Tue Apr 08, 2014 11:52 pm

Any issues that anyone can think of with using the Alternator from a 19TZS aircon model to replace the alternator in my TXD (diesel)?
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91

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mat_fenwick
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Re: Alternator swap

Post by mat_fenwick » Wed Apr 09, 2014 12:04 am

Nope, I've done the opposite before. Worth checking pulley sizes just in case the diesel one has a smaller pulley, to spin faster at a given engine speed. But don't think so. Petrol ones are higher output IIRC, AC ones (if original) more so.
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1993 1.9 TZD Turbo Estate
1996 3.9 V8 Discovery
1993 VW LT35 campervan
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rutter123
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Re: Alternator swap

Post by rutter123 » Wed Apr 09, 2014 12:27 am

i have an alternator from a 406 petrol on my tzd turbo pulley size was pretty much the same and 5 rib, fitted nicely and 100amp rated, i would imagine one from an aircon model would be higher output than non, does it matter? prob not, mines been running fine for a few years, also found the headlights better with the bigger alt.
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kiwi
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Re: Alternator swap

Post by kiwi » Wed Apr 09, 2014 1:29 am

Thats the main reason for doing a swap rather than messing around getting the Alternator repaired. I have two alternators on the bits shelf one from a 16RS and this one from the 19 TZS which was recond under my ownership.

Last year when I got a new battery the voltage was a bit iffy and the lights tend to flicker under load and now we are back to the going to work and home in the dark situation here I kind notice it especially after driving the wifes Mitsi to work the other morning. Kind put my headlights to shame :P

It was the ampage I was more concerned with I guess bigger output wont matter?
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91

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mat_fenwick
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Re: Alternator swap

Post by mat_fenwick » Wed Apr 09, 2014 8:24 am

No, the battery (and other equipment) will only draw the current it needs to so no risk of overcharging.
Image

1993 1.9 TZD Turbo Estate
1996 3.9 V8 Discovery
1993 VW LT35 campervan
1985 Hyundai Stellar V8
2016 Hyundai iLoad

Defender110
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Re: Alternator swap

Post by Defender110 » Wed Apr 09, 2014 9:09 am

You do need to check the pulleys if it has a ribbed drive belt as they come in different widths for different out puts, obviously the thinner belt would be ok on the wider pulley but not the other way round. This picture is from when I changed the alternator on my TZD, I had to fit my old 5 ribbed pulley as the newly supplied one was only a 4 ribbed pulley.


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electrokid
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Re: Alternator swap

Post by electrokid » Wed Apr 09, 2014 9:47 am

Most of the power that is taken from the battery to start the car is replaced in the first few minutes of running. That is normally the time when most power is taken via the alternator belt so if you have a higher power alternator then the load on the belt is increased at that time.

Just make sure that the belt is tightened well to avoid any slipping / squealing.
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kiwi
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Re: Alternator swap

Post by kiwi » Tue Apr 15, 2014 10:18 am

Confirmed on both spare alternators I have they are both 4 ribbed pulleys so thats not a problem.

Also discovered that the TXD alternator is rated at 50amps and so is the spare I had for the 16RS it came from. As for the TZS alternator well nothing obvious on the casing.
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91

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electrokid
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Re: Alternator swap

Post by electrokid » Tue Apr 15, 2014 7:15 pm

The second one is likely to be the most common 50 amp as well - the next standard size up is 80 amp and they usually have 5 rib pulleys.
1992 BX19 TGD estate 228K Rusty - SORNed
2002 C5 HDi SX estate

kiwi
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Re: Alternator swap

Post by kiwi » Tue Apr 15, 2014 10:51 pm

Might have to put a couple photos up on the FB page
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91