Jason_Wood Posted October 29, 2022 Report Share Posted October 29, 2022 I have a 1970 GT6 MkII that I’m in the process of getting back on the road (after 13 years off the road!). I would like to replace the alternator as I believe it has the original and I don’t want this or the battery to be a problem. Does anyone have the best recommendation for which alternator to go for please? Likewise, it needs a new battery, again best recommendations please (or even if there is an ideal alternator-battery pairing?) Thanks in advance for any recommendations! Jason Link to comment Share on other sites More sharing options...
dougbgt6 Posted October 29, 2022 Report Share Posted October 29, 2022 Jason, A lot of us use the 063 battery, I get mine from Euro Car Parts, cheapest they have at the moment is a Lion for £45. ECP have a sale, it seems monthly, so prices rise and fall. Being original is not a reason to replace the alternator, mines an original 1973, OK it's had problems, new diode pack, new brushes, but I would wait to see how yours performs before flashing the cash. Doug Link to comment Share on other sites More sharing options...
daverclasper Posted October 29, 2022 Report Share Posted October 29, 2022 Also, the repro's of the originals appear to often give problems?. info on previous threads here, about better alternatives Link to comment Share on other sites More sharing options...
Jason_Wood Posted October 29, 2022 Author Report Share Posted October 29, 2022 31 minutes ago, dougbgt6 said: Jason, A lot of us use the 063 battery, I get mine from Euro Car Parts, cheapest they have at the moment is a Lion for £45. ECP have a sale, it seems monthly, so prices rise and fall. Being original is not a reason to replace the alternator, mines an original 1973, OK it's had problems, new diode pack, new brushes, but I would wait to see how yours performs before flashing the cash. Doug Thank you for this advice. I’ll get a new battery, get it going and see what the results are. Is there a decent way of testing the alternator apart from ‘my battery doesn’t appear to charge”? Link to comment Share on other sites More sharing options...
Paul H Posted October 29, 2022 Report Share Posted October 29, 2022 Re alternator . I upgraded the Dynamo on my Vitesse to a Denso alternator . Paul Link to comment Share on other sites More sharing options...
NonMember Posted October 29, 2022 Report Share Posted October 29, 2022 2 hours ago, Jason_Wood said: Is there a decent way of testing the alternator apart from ‘my battery doesn’t appear to charge”? Voltmeter on the battery. Before starting, you should see 12V or thereabouts. Once running, that should begin to rise, and after a bit of time it should settle around 13.5 to 13.8V (how long that takes depends how well charged the battery is). Put on some electrical loads (headlights) with the engine speed about 1500RPM and the voltage shouldn't dip. If it behaves like that, the alternator is good. Link to comment Share on other sites More sharing options...
avivalasvegas Posted October 29, 2022 Report Share Posted October 29, 2022 I'd recommend the Bosch S5 battery and the AES (EU) alternator. I have both in my GT6 Mk2. Link to comment Share on other sites More sharing options...
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