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<p>In my experience, 14.5 v is normal when charging.</p>
<p>Regards, Tony Drews<br>
</p>
<div class="moz-cite-prefix">On 5/19/2025 4:52 PM, Chuck Gee via Fot
wrote:<br>
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<blockquote type="cite"
cite="mid:5BB0197B-708C-4247-BE96-D56DB922F4D1@gmail.com">
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I have a silly question, what voltage do you consider
overcharging? My current one charges at over 14v (maybe 14.5v)
and wondered if I should be worried. I’ve done total loss for
years and have just started using an alternator again.
<div><br id="lineBreakAtBeginningOfSignature">
<div dir="ltr">Chuck</div>
<div dir="ltr"><br>
<blockquote type="cite">On May 19, 2025, at 11:29 AM, Tony
Sheach via Fot <a class="moz-txt-link-rfc2396E" href="mailto:fot@autox.team.net"><fot@autox.team.net></a> wrote:<br>
<br>
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Hi all
<div><br>
</div>
<div>My experience is that if you are going to use one of
these Nippon Denso derived alternators, you need to go for
the OE part.</div>
<div><br>
</div>
<div>The various copies all have short lives, mainly because
the diode set lacks up and usually starts overcharging the
battery and causing the output voltage to vary
considerably, usually upwards. I’ve had this happen and
it’s not pleasant when a dry cell battery gets fat enough
to pop.</div>
<div><br>
</div>
<div>You can buy diode sets for the original Denso units and
these are a quick change ‘in the field’ so my view is to
buy a decent one and a couple of spare diode packs (the
assembly with the spade terminals on the end) and replace
as necessary.</div>
<div><br>
</div>
<div>I have one 80amp unit that’s done 10 years and is going
back in after the current refit. I appreciate that most
don’t need this sort of output, but it’s usually wet and
dark here so it’s everything on. The smaller 45/50 amp
units are probably longer lived.</div>
<div><br>
</div>
<div>Best wishes to all</div>
<div><br>
</div>
<div>Tony </div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div dir="ltr">Sent from my iPhone</div>
<div dir="ltr"><br>
On 19 May 2025, at 16:12, Michael Moore via Fot
<a class="moz-txt-link-rfc2396E" href="mailto:fot@autox.team.net"><fot@autox.team.net></a> wrote:<br>
<br>
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<p class="MsoNormal"><span style="font-size:11.0pt">Do
you have the part number for the powermaster?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"PPC Handwriting";color:#006600">Have a
Good Day</span><span
style="font-size:11.0pt;font-family:"PPC Handwriting";color:#006600"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"PPC Handwriting";color:#006600">Mike<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Calibri",sans-serif;color:#006600"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#006600">Michael
T. Moore, CPA<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#006600">3255
West 26<sup>th</sup> Street</span><span
style="font-size:11.0pt;color:#006600"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#006600">Erie,
PA 16506<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#006600"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#006600">Phone:
814-616-8652 ext 100<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#006600">Fax:
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div
style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Fot
<a class="moz-txt-link-rfc2396E" href="mailto:fot-bounces@autox.team.net"><fot-bounces@autox.team.net></a>
<b>On Behalf Of </b>JS Performance Motoring,
LLC via Fot<br>
<b>Sent:</b> Monday, May 19, 2025 10:21 AM<br>
<b>To:</b> Mike Harmuth
<a class="moz-txt-link-rfc2396E" href="mailto:ofracer@gmail.com"><ofracer@gmail.com></a><br>
<b>Cc:</b> FoTTriumph <a class="moz-txt-link-rfc2396E" href="mailto:fot@autox.team.net"><fot@autox.team.net></a><br>
<b>Subject:</b> Re: [Fot] What alternators are
you using on a Spitfire?<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">Mike,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> The mini-denso style
alternators work great. There is a difference
in quality between the cheapest, bottom of the
barrel options, and the more expensive
options. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">When my $10 Amazon special
failed at VIR last year (had been in service
since 2020), the backup unit I borrowed from
Henry Frye looked identical, but weighed
substantially more! There's clearly a
difference. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Currently, I'm running a
powermaster brand and it seems to be well made.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I also like to run a larger
pulley to slow things down. Here in the states,
you can get a 4" pulley sold as Powermaster p/n
182. This is a direct swap onto the mini denso.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div><image001.jpg></div>
<o:p></o:p>
</div>
<div><image002.jpg></div>
<o:p></o:p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">We were also watching the
J500 at my house, did you catch the medium bore
race, where under full course caution, the
commentator shouted "Slow down, Henry!". We
about fell out of our chairs laughing!<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Jason Sukey<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">JS
Performance Motoring, LLC<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">440.984.7720<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><a
href="mailto:jason@jsperformancemotoring.com" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">jason@jsperformancemotoring.com</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><a
href="http://www.jspmparts.com/" originalsrc="http://www.jspmparts.com/"
target="_blank"
moz-do-not-send="true">www.jspmparts.com</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><a
href="https://www.facebook.com/JSPerformanceMotoring/"
originalsrc="https://www.facebook.com/JSPerformanceMotoring/"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.facebook.com/JSPerformanceMotoring/</a><o:p></o:p></p>
</div>
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</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Mon, May 19, 2025 at 9:01<span
style="font-family:"Arial",sans-serif"> </span>AM Mike Harmuth
via Fot <<a href="mailto:fot@autox.team.net"
moz-do-not-send="true"
class="moz-txt-link-freetext">fot@autox.team.net</a>>
wrote:<o:p></o:p></p>
</div>
<blockquote
style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<p class="MsoNormal">I'm getting tired of
replacing the stock type alternators. They
used to last a few seasons but now it seems
like a few weekends is the norm.<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"> Like oil, I know there
will be many different opinions, including
running without one. That being said, any
suggestions/part numbers/suppliers of a
system that works for you?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">BTW, I enjoyed watching
the Jeff 500 last weekend on the VRG live
stream (currently available on YouTube).
Nice job against the 911 Mr. Frye.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">thanks<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">mike h<o:p></o:p></p>
</div>
</div>
</div>
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