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'13-15 V7 Over-charging? PLEASE READ

Discussion in 'V7/V85/V9 Chat & Tech' started by GT-Rx®, Feb 16, 2016.

  1. GuzziV65TT

    GuzziV65TT Cruisin' Guzzisti

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    My V7TT stopped charging recently, stator was not outputting anything, with the exhaust off and front cover removed the metal tab that the wires are tied to had fractured and pulled the wiring against the stator case.

    This was shorting one side of the stator to earth

    Might be worth checking if you have time.

    [​IMG]
     
    Last edited: Mar 17, 2017
  2. Kev M

    Kev M Cruisin' Guzzisti

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    Unless that's a typo there's something wrong with the first measurement, or possibly all of them.
     
  3. dilznik

    dilznik Just got it firing!

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    Maybe he means it's charged his battery to 15v?
     
  4. vagrant

    vagrant High Miler GT Contributor

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    doubt it. thats where mine was at with 2 different meters. replacement rarely hits 13.0 piss poor quality control if you ask me.
     
  5. Kev M

    Kev M Cruisin' Guzzisti

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    Are you suggesting you got a reading of 15 volts with the engine NOT RUNNING/KEY OFF?

    As I said, either we're misunderstanding his post or something is wrong, perhaps with his meter.
     
  6. vagrant

    vagrant High Miler GT Contributor

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    So here is my original post. I doubt I checked it with the engine off but if it's being hit with 17 volts running 15 off would be likely shortly there after.
     
  7. wthammond

    wthammond Tuned and Synch'ed GT Contributor

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    Wow this is a great Forum. Just found this little thread. I have not tested my new acquisition, but if my Mantra of 'It's not a proper Italian Motorcycle unless there is something wrong with it' holds true I suspect I have this problem on my 15 V7 special.

    Has anyone used this part from the GuzziTech website?
    EME VOLTAGE REGULATOR – NEW
    $109.00

    If I read Todd's posts correctly the Reg/Rec needs to be replaced as well as the Battery, then have the dealer check for Cam sensor error codes?

    Thanks!
     
  8. sib

    sib Cruisin' Guzzisti

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    I have to sadly report that my V7II Stone has just shy of 14,000 mi on it and the battery/regulator are fine, there are no missing thrust washers/shims in the engine, the clutch throwout bearings are as good as new, oil doesn't burn or accumulate in the air box, the rear drive doesn't leak, the cold idle is just fine, there is no unevenness in the throttle response, the spark plug caps haven't shorted or corroded, there's no back-firing or grumbling when I let the throttle off, and none of the turn signal lights have fallen off yet. Either I'm doing something wrong or I've been very unlucky.

    After reading all of the battery/regulator horror stories here, I checked mine with a Fluke meter yesterday. The battery had been on a Battery Tender for about a week until the previous day. Before starting, the battery voltage was 12.79V. After starting, and idling, it was 14.31V. At either 3000 or 4000 rpm, it rose to 14.48V. The battery temperature was about 45F, and according to tables for 6-cell lead/acid batteries, at that temperature the voltage at which gas begins to be produced is about 15V. So, once again, my bike is disappointingly OK.
     
    Last edited: Mar 23, 2017
  9. vagrant

    vagrant High Miler GT Contributor

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    we have a winner!
     
    GT-Rx® likes this.
  10. wthammond

    wthammond Tuned and Synch'ed GT Contributor

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    Sib sorry to hear you are not getting the full Italian Motorcycle Ownership experience ;). Despite my Mantra, I keep buying them because they make me smile. I think the VII did not have the charging issues, only the VI, I think I may go ahead and upgrade to the rec/reg from the VII just to be safe. Cheers!
     
  11. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Heh, yep... well, (un)lucky for sure. My V7 II Stone rental has ~10k on it now. The rear drive now leaks, even after we tightened the barely finger-tight (from the factory) inner rear flange bolts. The PDI was not properly done on any of my '13-current V7's or V9. If you have a good dealer, you are very lucky. It was the '13-15 V7s as noted that had the problematic charging issue.
     
  12. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Just check it with a DVM before spending the money. You may be one of the (un)lucky ones like Sib above. ;)
     
  13. wthammond

    wthammond Tuned and Synch'ed GT Contributor

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    Will do. Sent an enquiry through the store about the EME rec/reg. Is it plug-n-play from the OEM? Many thanks!
     
  14. wthammond

    wthammond Tuned and Synch'ed GT Contributor

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    Good news - pulled my side panel and got out my fancy new DVM. 12.1 off, 13.2 at idle, 14.2 at 3000 RPM. Mine is a late production V7 2015 model, so evidently I got one with a correctly functioning rec/reg. Now if I could only find one of the two little rubber grommets from the side panel that went missing since the last time I had the side panel off!

    Thanks to everyone in this thread. Would not have even known to check if not for you guys!
     
  15. T_Guzzi

    T_Guzzi Just got it firing!

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    My 2013v7r shows 15,4 at all rpm. Original battery lasted 2 years and 3500 km, but no running issues so far. This thread is long and confusing, but which VR from this site should I buy?
    If nothing else it will make me sleep better at night
     
  16. wthammond

    wthammond Tuned and Synch'ed GT Contributor

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    I ended up not needing one, but it looks like the EME for 109 would work though may not be plug and play. The OEM might be but is quite a bit more expensive. I asked Todd about the EME one, he said it might require cutting the plug off the old unit and attaching it to the new one. Would recommend soldering for that vs. crimp connectors if you have the savvy. If not, a local auto electric shop or independent MC mechanic should be able to.
     
  17. robertllr

    robertllr Tuned and Synch'ed

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    Just came across this thread. Read every damn post.

    Then read all the V7-overcharging posts on the the other forum.

    What a mess of inconclusiveness.

    Checked output on my 2013 V7 Racer: 12.49 volts DC at rest, and 15.47 volts everywhere in the rev range—from idle to 4k.

    Bike starts easily with 7,000 miles on the original battery and no evident electrical issues.

    Too many options, but still none of them is plug and play. I'm still thinking about what to do.
     
  18. robertllr

    robertllr Tuned and Synch'ed

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    This one...

    electrosport.com/street-bikes/moto-guzzi/v7-racer/honda-heavy-duty-regulatorrectifier.html

    ...is supposedly a replacement for 883878--the regulator part number for the 2013 racer, and maybe others. I wrote to the distributor,and he wrote back that the output is set for 14.6 volts.

    BIG HOWEVER: I'm still not entirely sure the plugs will fit, because the bike model and date applications specified--according to my parts book--use the GU32703810 VRR.

    Also it's made in China.

    Also, I hate removing the tank. I've done it twice. Those who don't find that procedure a royal PITA have my doffed hat. I'm considering just cutting the wires at both old and new regulators and splicing in the new part. Would also reder moot the plug issue. (Spicing is not much fun either, but it's better than pulling the tank.)
     
  19. vagrant

    vagrant High Miler GT Contributor

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    on the 15 I didn't remove the tank. as I recall just slid it back a bit.
     
    joejacobi likes this.
  20. Wisconsin v7 Racer

    Wisconsin v7 Racer Cruisin' Guzzisti

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    Removing the tank is extremely easy. Make sure it's near empty helps but I've done it full. And use the green quick disconnect on the fuel line and unplug the wires pop off some hoses easy enough. But helps to have a extra set of hands to hold the tank up.
     

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