| Author | Message | ||
     Patrick Francis Frequent User Username: jackpot Post Number: 291 Registered: 11-2016 |
Hi Guys On my ‘65 Mustang, I upgraded the dynamo to a 70a Alternator because the dynamo could not keep up. The two biggest draws on the car are the high power radiator fan and the Aircon blower in the car. I have noticed that whenever I check the alternator temperature, it is too hot to touch and that worries me. I know underbonnet temperatures can get very high (especially in the Shadow!j , so part of the problem may be due to localized temperature. I am going on a motorway journey soon, so should be able to do a good run where neither fans are working and I will check the temp again then. In the meanwhile, just wondering how hot do they tend to get? We often add radiator fans and plug in accessories willy nilly and forget to check if the electrics can keep up! I am just contemplating adding a radiator fan to the Shadow, and am worried about over stressing the electrics. Thanks | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 581 Registered: 07-2015 |
Sounds like you may have a shorted diode , get it tested. Mike | ||
| Alan Dibley Frequent User Username: alsdibley Post Number: 209 Registered: 10-2009 |
I read somewhere that one of the current RRs has TWO WATER-COOLED ALTERNATORS!!! Is this true or did I dream it? Or was this an ordinary bit of journalist nonsense? Alan D. | ||
| Omar M. Shams Prolific User Username: omar Post Number: 1882 Registered: 04-2009 |
It's true Alan | ||
| Robert J. Sprauer Frequent User Username: wraithman Post Number: 528 Registered: 11-2017 |
There are 2 water cooled alternators in the Phantom and BMW 760 variant | ||
| Patrick Francis Frequent User Username: jackpot Post Number: 292 Registered: 11-2016 |
Would the fact that I have installed the alternator, but I have left the dynamo regulator in line, affect? Would the internal regulator battle the external regulator and cause the alternator to heat up? | ||
| ross kowalski Prolific User Username: cdfpw Post Number: 1236 Registered: 11-2015 |
Patrick, If you have a DC clamp on meter, check it. Remember also the 70A is at full song so at idle or bopping along at 2k you have lots less amps to play with. The double regulator shouldn't be a problem but not knowing how it's wired, that would be a wild guess. Are you sure your alternator has internal regulation as well as rectification? | ||
| Mike Thompson Frequent User Username: vroomrr Post Number: 976 Registered: 04-2019 |
Maybe you are just asking too much from just 70 amps. You can get a bolt-in stock style alternator rated at 100 amps. I had no need for a car in Spain but I would think you can take it to an autoparts store and they could check it in Gibraltar. (At least they do in the USA.) | ||
| Trevor Hodgekinson Experienced User Username: wm20 Post Number: 67 Registered: 11-2006 |
Patrick. Remove the dynamo regulator. A field energised dynamo -generator uses voltage applied to the field windings to regulate the DC output. An alternator regulator dose the same thing, but differently. Having them both there is going to give you grief, particularly is you are pumping AC through the generator regulator. | ||
| Mike Thompson Frequent User Username: vroomrr Post Number: 977 Registered: 04-2019 |
The original should have been a single wire alternator with an external regulator. I agree two regulators may cause problems. Here is an example of a 1965 Mustang 100 Amp Alternator Single Wire. https://www.cjponyparts.com/powermaster-alternator-100-amp-one-wire-v-belt-pulley-smooth-look-1965-1973/p/ALT38-V/ |
