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GT-Rx® V7R-820 QuattroValvole Info & Dyno Runs

Discussion in 'V7/V85/V9 Chat & Tech' started by GT-Rx®, Nov 15, 2015.

  1. Trout

    Trout GT Reference

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    Wow! The blue & the green follow almost the exact same pattern but the green shows big improvement.
    This is on the V7R rental bike?
     
  2. GT-Rx®

    GT-Rx® Administrator Staff Member

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    Yes, stock cam, and 749cc vs. 820cc.

    [​IMG]
     
  3. rbm

    rbm Cruisin' Guzzisti

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    Todd, is there any concern that the drive train components cannot handle the 65% increase in HP and torque over the long term? Obviously this might be hard to predict.
     
  4. GT-Rx®

    GT-Rx® Administrator Staff Member

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    Not at all. Plenty of small blocks raced here with 50-55 rwhp, and Mike beat on his 750-4V at 55 rwhp for ~2+ years including drag strip passes, basically trying to break something. Guzzis are overbuilt... the clutch might be the weakest link.
     
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  5. mwrenn

    mwrenn Cruisin' Guzzisti GT Famiglia

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    Man, that is an impressive achievement. A one of a kind V7. Congratulations on getting her up and running....60 rwhp is exactly what the V7 needs!
    That bike is a beast! Whew....
    I did run mine as hard as I could, doing burnouts, going to the rev limiter in every gear, just really trying to see if anything would break. I still have the original clutch in it, put 15,000 miles of hard use on it, and it runs better now than it did when I first finished the build.
    The Quattro Valvole really wakes up the V7, and with the 6 speed gearbox, it will be even better.
    Looking at the dyno numbers, it seems like the 820cc version will pull harder than my 750 starting about 5200 rpm. Man, I need to get out to Cali and ride that thing...
     
    Last edited: Oct 2, 2016
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  6. mwrenn

    mwrenn Cruisin' Guzzisti GT Famiglia

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    Just studying the dyno chart some more. Looks like the 820cc bike made 58 RWHP. So it should go over 60hp after break in, no problem. Pretty cool that 60hp was the goal all along. I also noticed the torque curve on the 820cc bike peaks just perfectly from 4800 to 5000 rpm. That is the sweet spot for street and highway riding, at least for me. Good deal, can't wait to do this conversion on my new Racer!
     
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  7. Yodastien

    Yodastien Tuned and Synch'ed

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    Question is there a reason you used the 2-2 vs the 2-1 is there a power difference between the two?
     
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  8. GT-Rx®

    GT-Rx® Administrator Staff Member

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    I'll find out next week. The 2:2 on the bike is for @mwrenn, and I have a 2>1 sitting and ready to go for a dyno session.
     
  9. Stradagene

    Stradagene Cruisin' Guzzisti

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    That is a good question. My bike has the 2>1, as well.
     
  10. Stradagene

    Stradagene Cruisin' Guzzisti

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    Todd - Can you add the 820-2V performance to the recent chart that you posted so that we can compare all 4 configurations?
     
  11. GT-Rx®

    GT-Rx® Administrator Staff Member

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    Blue is stock, green is pre-fuel mapping for the 820-2V kit w/GT-Rx® ported heads, and red is the GT-Rx® 820-4V kit.

    OEMV7-8202V-8204V.jpg

    IMG_8812.JPG
     
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  12. Trout

    Trout GT Reference

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    If I was only in California I'd grab that wee beastie in the morning & bring it back in the evening and we could see what 600 miles does.

    Thanks for all the time & expertise you put into these bikes hope you get feeling better soon.
     
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  13. GT-Rx®

    GT-Rx® Administrator Staff Member

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    Another one comes alive...

     
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  14. Yodastien

    Yodastien Tuned and Synch'ed

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    So nice
     
  15. Stradagene

    Stradagene Cruisin' Guzzisti

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    Todd,

    This is just... so cool!!! Thank you for developing this kit and making it available to the community!
     
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  16. DK-V7classic

    DK-V7classic Tuned and Synch'ed GT Contributor

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    I am looking sooo much forward to completing This assembly in
    Denmark! :-D

    Todd recieved My cyllinders last week! Feel like little Boy again, waiting for Christmas :-D
     
  17. A*D*A*M

    A*D*A*M Just got it firing!

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    A 4valver in Denmark! I 'm sitting on a pair of Lario heads here in Gothenburg, Sweden dreaming of converting but figured all shipping fees would cost more than the parts.
    I'd like to chat some to understand what costs it brings sending the parts from Scandinavia to US and back.
    Will be riding to Castle run in Copenhagen in May and take some time off for touring southwards with the pals after that. Perhaps that could give me a chance to see your bike.
    Best of luck!
     
  18. Rafael

    Rafael GT Reference

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    Todd, You did a great job on the color selection too. Beautiful! Bella Bella!! with a 37 lbs loss to boot. I can see one of these in my future - right weight right amount of power. hope your well.
     
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  19. DK-V7classic

    DK-V7classic Tuned and Synch'ed GT Contributor

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    Very Nice, Those Are rare these days.
    The shipping isn't too bad, once you commit to it, 800 kr. For shipment is not the killer. I was more worried about damage or loosing My only jugs! Can't really ride anywhere without em Right ;-)

    I will be posting pictures With all Bells and whisels :) I live in Aarhus, and hate driving on the highway. But that might change, once i am up and running.

    But if i am Right, the "only" parts you would need to get Those larios whispering. Would be a power commander With a Autotune mod.
    You should easy get 10hp, just With that. Ofc. There Will be some clearrence and grinding.

    But i am Absolutely No expert

    Ordered a Autotune module yesterday, allready had the pcV hooked up last year.

    Happy weekend ;-)
     
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  20. Stradagene

    Stradagene Cruisin' Guzzisti

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    I thought I would cross-reference this post from the V9 thread since it is directly relevant to the 820-4V kit:
    The only other thing I would add to this post, in the context of this thread, is that this kit is in every sense truly a part of the Moto Guzzi tradition. The bore of the cylinders in this kit is the same as those found in the latest development of the small block offered by MG in the V9, while the 4V heads are straight from the design of those on the ground-braking Lario. The fact that nothing in this kit was done ad hoc, but instead, everything is straight Guzzi heritage adds an additional intangible visceral appeal to the kit.


    IMG_1237.jpg IMG_1239.jpg
     
    Last edited: Mar 22, 2017

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