RobL Posted August 15, 2015 Report Share Posted August 15, 2015 Hi all Has anyone come across a 55 Amp alternator inside what looks like a dynamo ? Lots of 45 Amp units around via Google but I'm after a 55 Amp unit to fit to a TR3. Please don't question why 55A not 45A... Thanks if anyone can help. Cheers Rob Quote Link to post Share on other sites
Lebro Posted August 15, 2015 Report Share Posted August 15, 2015 Why do you want a ------------------ CENSORED Quote Link to post Share on other sites
RobH Posted August 15, 2015 Report Share Posted August 15, 2015 The problem with those things is the cooling. An alternator regulator and rectifier needs to be kept cool but its very difficult when sleeved in a dynamo casing and mounted close to the exhaust manifold. A 45amp unit is pushing it a bit for reliability let alone 55A. Quote Link to post Share on other sites
TorontoTim Posted August 15, 2015 Report Share Posted August 15, 2015 Re: cooling - it can't be hard to machine/cut a whole load of cunningly placed slots in a dynamo type casing......er......can it? (Roger, this must be up your alley for clever home-made thingamebobs) Quote Link to post Share on other sites
ianc Posted August 16, 2015 Report Share Posted August 16, 2015 Advisable to use a heat shield if fitting an alternator, essential if the exhaust manifold is 4 branch. Ian Cornish Quote Link to post Share on other sites
peejay4A Posted August 16, 2015 Report Share Posted August 16, 2015 I had a Dynalite for a couple of years then it overheated and the regulator popped. I replaced the regulator (the innards are Denso) and stuck it on the shelf. I now have a 60A Denso with heat shield even though I have a standard exhaust manifold and the Denso is quite short. Machining ventilation slots in the dynamo casing might defeat the object if an original look is required. Quote Link to post Share on other sites
Fireman049 Posted August 16, 2015 Report Share Posted August 16, 2015 Hi Rob ~ My 3A is fitted with a 45A alternator and a four branch manifold. If you'd like to see how I insulated the alt. from manifold heat then please PM me your eMail address. Tom. Quote Link to post Share on other sites
Tr4Tony Posted August 18, 2015 Report Share Posted August 18, 2015 Hi My experience with the Dynalite / Dynamo type alternators has not been good either. They tend to overheat and break, just like, the old LUCAS LRA 105. I settled on a small DENSO alternator and found a 60 amp and 85 amp alternative which are sufficiently small that they fit the space and can be hidden / shielded reasonably easily and they seem to last a long time in the most arduous of conditions. The smaller 40 amp is also a very good unit and should work for most unless you are using trick lights and trip meters, hot air blowers, heated screens and all that rally stuff ... You can buy then from the usual places and sometimes on eBay and most suppliers can furnish you with a BASTUCK fitting kit for £20 or so. Similarly the plugs are available for circa £10 each, and the tiny pin version seems to be better than the spade in use as it attaches harder and can be sealed. One word of warning though, I believe that you really need to buy an ND stamped original Denso unit, not the cheap reproduction as my experience is that the these fail very quickly, purely because they are not well made. The ND logo is on the tin plate end cover. Hope this is useful. Regards Tony Quote Link to post Share on other sites
monty Posted August 18, 2015 Report Share Posted August 18, 2015 Hi My experience with the Dynalite / Dynamo type alternators has not been good either. They tend to overheat and break, just like, the old LUCAS LRA 105. I settled on a small DENSO alternator and found a 60 amp and 85 amp alternative which are sufficiently small that they fit the space and can be hidden / shielded reasonably easily and they seem to last a long time in the most arduous of conditions. The smaller 40 amp is also a very good unit and should work for most unless you are using trick lights and trip meters, hot air blowers, heated screens and all that rally stuff ... You can buy then from the usual places and sometimes on eBay and most suppliers can furnish you with a BASTUCK fitting kit for £20 or so. Similarly the plugs are available for circa £10 each, and the tiny pin version seems to be better than the spade in use as it attaches harder and can be sealed. One word of warning though, I believe that you really need to buy an ND stamped original Denso unit, not the cheap reproduction as my experience is that the these fail very quickly, purely because they are not well made. The ND logo is on the tin plate end cover. Hope this is useful. Regards Tony Tony, what is your opinion on these lightweight units on a road car that are supplied by the likes of Racetorations, TR Enterprise & AES etc? Quite like the idea of space saving & the better performance they seem to offer over the standard alternator. Cheers. Quote Link to post Share on other sites
mike3md Posted August 18, 2015 Report Share Posted August 18, 2015 Monty, I think that was the style of unit that Tony was referring to (DENSO) . Mike Quote Link to post Share on other sites
peejay4A Posted August 18, 2015 Report Share Posted August 18, 2015 I would echo Tony's point about buying genuine Denso if you can and look for the Denso logo impressed on the back cover of the alternator. The Bastuck supplied E310COMP is I think a Denso copy. Quote Link to post Share on other sites
monty Posted August 18, 2015 Report Share Posted August 18, 2015 Monty, I think that was the style of unit that Tony was referring to (DENSO) . Mike I think the ones the likes of Racetorations etc. sell are the Powerlite brand. Quote Link to post Share on other sites
Ian Vincent Posted August 19, 2015 Report Share Posted August 19, 2015 I bought a genuine new ND Kubota 45 amp one on eBay recently for £65 including the plug. It has ND stamped onto the tinplate cover. At that price, why buy anything else? Rgds Ian Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.