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V7 III 820cc Big Bore Kit

Discussion in 'V7/V85/V9 Chat & Tech' started by GT-Rx®, Jul 13, 2017.

?

I...

  1. Love this and plan on doing it to my V7 III

    15 vote(s)
    78.9%
  2. Am content with stock power

    4 vote(s)
    21.1%
  1. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    I just got the new forged 820cc pistons in yesterday. These are drop-in, meaning no crank re-balancing required. First install is happening on our RentAGuzzi/RideMalibu V7 III Racer soon. I'll post more with dyno info as we go.
    If you want to secure a set, click on the pic below or HERE. I did a very small batch run to start. Yes this will require my ECU FT for a corrected map.
    You can have your cylinders bored and re-coated yourself, or I will try to offer a core exchange at additional cost of course. Contact me direct for more info direct email; Todd at GuzziTech.com

    Forged and weight matched 820cc piston on left, stock on right:
    [​IMG]
     
    DK-V7classic likes this.
  2. DK-V7classic

    DK-V7classic Tuned and Synch'ed GT Contributor

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    If i had a V7III Absolutely! :)
     
  3. roadscum

    roadscum Cruisin' Guzzisti

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    I depends on the dyno results the cost off the total package..... cylinder kit, fueling changes, etc....

    Paul
     
  4. gyrorex

    gyrorex Just got it firing! GT Famiglia

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    Todd,
    Do you have those for the older, Herron head V7's as well?
    Thanks, Rex
     
  5. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

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    2nd this...

    more power!!!! as Tim the tool man Taylor would grunt at it...
     
  6. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Poppe and TimmyTheHog like this.
  7. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

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  8. Stradagene

    Stradagene Cruisin' Guzzisti GT Famiglia

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    Ooh!

    If you have a V7/V7II and you really want some power, and if you're coming down to California to have Todd do the installation, you should consider the 820cc-Quattrovalvole kit!

    I would wager that the 820cc-Quattrovalvole kit delivers more power and torque than even the new 820cc kit for the V7III, but Todd only sells the 820cc-Quattrovalvole kit with installation by Guzzi-Tech. The advantage of the drop-in 820cc kit using the stock 2V Heron heads is that Todd sells those for your own installation, but if you're already thinking of coming down for a drop-in 820cc big bore kit installation...
     
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  9. BENITO

    BENITO Just got it firing!

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    Can anyone provide 820cc-Quattrovalvole kit ballpark figures on cost and gains? I may be interested in upgrading the v711 this fall/winter
     
  10. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    l covered in the thread you linked to... or email me direct; Todd at GuzziTech.com
     
  11. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Going together.
    820 piston in, stock below.

    IMG_1641.JPG
     
  12. Trout

    Trout GT Reference

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    I wanna see the dyno.
    I wanna ride that bike.
     
  13. Tequilasunriser

    Tequilasunriser Just got it firing!

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    Looks awesome! Any updated dyno info on this drop-in kit?
     
  14. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    I have most of the info posted on this thread; https://www.guzzitech.com/forums/threads/gtm-v7iii-racer-820r.17698/ -- everyone who has ridden it has been impressed.

    Dyno graph below... Same bike, bone stock 749cc (green tracers) vs. GTM 820cc (blue tracers). Both are with stock exhaust and small amount fuel tweaking. With our full stepped header exhaust system, you'll have another 5% or so.

    [​IMG]
     
    T_Guzzi, Tequilasunriser and BearV7 like this.
  15. lucydad

    lucydad Cruisin' Guzzisti GT Famiglia

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    Impressive indeed
     
  16. racer-7

    racer-7 Just got it firing!

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    I don’t write reviews, but this time I had to--it’s that good.
    I am an engineer with 15 motorcycles—3 guzzi’s--and I have a knack for finding faults but I can’t find a fault with this set up. It’s perfection!

    I installed this mod on my V7-3 racer--GTM V7 820 Big Bore, GTM GP Exhaust and the GTM ECU Flash. Everyone knows the V7 is a fun bike, but with this upgrade it’s fun squared. Every twist of the wrist is happiness and satisfying. The throttle response is spot on. The power curve is straight and true. The monster torque is present everywhere. The sound of the GTM GP exhaust sound--ahhh the sound--is addicting.

    I would like to thank Todd Eagan and his crew for their support and his passion for the Moto Guzzi brand. It’s really impressive what GTM does with these wonderful V-twin motors. Todd and his crew really know what they are doing. If you want to experience the passion and true performance of these wonderful engines, this is one of the mods.

    Thanks Todd and GTM Crew
     
  17. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Poppe likes this.
  18. Owen Liu

    Owen Liu Just got it firing!

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    Hi Todd, I'm a little confused on what is in the kit.

    From the description in the store, it says: Kit includes pistons, all rings, wrist pins and new larger bore metal top end gaskets and OEM base gaskets.

    Particularly I was confused about: new larger bore metal top end gaskets and OEM base gaskets.

    Are these just gaskets? How does it work with the need for a larger piston sleeve to work with the larger pistons? You have to machine them at your local shop?

    Thank you.
     
  19. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    We had larger head gaskets made originally, but we now supply them as OEM both top and bottom thanks to the V9.
    The cylinders need to be bored and re-nikasil'ed, as well as re-powdercoated (the chemical process for the nikasil destroys the external black coating). This is a service we offer if you want to send your cylinders to us. Any more info, please use email direct; Todd at GuzziTech.com
     
    Owen Liu likes this.
  20. Owen Liu

    Owen Liu Just got it firing!

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    Now it's clear, thanks for the quick response Todd.
     

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