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Anybody have a GT-RX ECU/PCV/AT on their V7?

Discussion in 'V7/V85/V9 Chat & Tech' started by Instg8r, Apr 18, 2013.

  1. mwrenn

    mwrenn Cruisin' Guzzisti GT Famiglia

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    I know what you mean, about people not wanting to have more power, or some say that the stock power output is enough. That's cool, if that's what they like, but I have always tried to hot rod my vehicles, ever since I was a kid, putting alloy wheels on my Schwinn bicycle. LOL There are actually quite a few people I have met, and have encountered online who are customizing their V7's. Here is a link to a small block Yahoo group, there is a lot of good info on there. http://autos.groups.yahoo.com/group/MG_750/ Of course this forum is a good place to see what's going on in the SB performance field too.
    Anyway, I will have to borrow my friends GoPro camera and post up a vid. Maybe wrap the bike all the way out this time and see what it will do.
    I do not think that the two throttle bodies have any performance advantage over the single TB. I think the flow is probably limited by the intake valve size and cam lift and duration. The single TB is much more elegant to me, but my setup works too.
    Here is one last link for you..LOL. http://tonupclubchicago.com/
    Cheers.
     
  2. Instg8r

    Instg8r Cruisin' Guzzisti

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    I'd love to hear and see it and to get some eveidence of small block performance, be safe as well. :cool:

    You guys are probably right, for street bike the 1tb is probably best.

    The pics of the race V7's in the 2-1 exhaust thead, it looks like its new engine with 2tb's but that's probably a custom race deal.


    When was there a 4v head on the small block?

    Matt
     
  3. pokeyjoe

    pokeyjoe High Miler

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    The Lario came out in the 80's, I believe. 650 with problems (two-piece valves, valve springs too stiff, soft cams). I guess they can be fixed up with some Suzuki valves and softer springs. There's a guy over on wildguzzi restoring one.
     
  4. Kev M

    Kev M Cruisin' Guzzisti

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    I'd be very curious to see some comparative dyno charts:

    2TB stock
    2TB with pipes
    2TB with reflash and pipes

    1TB stock

    etc

    the 1TB seems to be making more power lower in the rpm range, so I wonder how much more there is to benefit.

    That said, Todd's reflash on my B11 was a kick in the pants, so I'm open (not that I really want to remove my throttle body and send it to CA).
     
  5. Instg8r

    Instg8r Cruisin' Guzzisti

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    I would guess that the 1tb has higher air velocity at low engine speeds plus the higher compression will yield more response when twisting the throttle.

    I agree I would love to see the dyno comparison's with the different configurations and get some hard numbers. If I lived in CA I would let Todd use mine for testing... Too bad Im very very far from CA :(

    Matt
     
  6. Instg8r

    Instg8r Cruisin' Guzzisti

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    I just looked at the V65 Lario specs on the web, I don't know how accurate they are.....

    But it says 50hp @7800 rpm.

    Man I wish MG would make the new high compression 750 with 4v heads....


    Matt
     
  7. Kev M

    Kev M Cruisin' Guzzisti

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    This is a somewhat debated point over at WG, but some say that is the crank spec, not rear wheel.

    http://wildguzzi.com/forum/index.php?topic=51872.0
     
  8. Instg8r

    Instg8r Cruisin' Guzzisti

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    Even still, the 1TB engine makes 50hp crank as well. But imagine modern day tech, FI, 4V heads, hi comp pistons, 750cc and making power all the way up 8000+ rpm....with these light weight bikes....hmmm...
    A man can dream...

    Matt
     
  9. Kev M

    Kev M Cruisin' Guzzisti

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    That is a fact not lost on me in the slightest, but apples-to-oranges considering the 1TB motor does it while also making modern emissions standards (and not dropping valves, which is a whole other conversation).

    It's an old conversation that people have been having for years.

    Truthfully I could probably not care less.

    I've got a Duc if I want more power, but I prefer the V7 for everything it is, and don't worry about what it is not.
     
    joejacobi and BugSpatteredJacket like this.
  10. Instg8r

    Instg8r Cruisin' Guzzisti

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    I don't have a Duc, just a V7... So for me I'd like it to do as many things as it can.
     
  11. Instg8r

    Instg8r Cruisin' Guzzisti

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    1tb engine with 2 tbs?
     

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  12. pokeyjoe

    pokeyjoe High Miler

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    or carbs...
     
  13. Instg8r

    Instg8r Cruisin' Guzzisti

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    True, but then wouldn't 2TB's be better the 2carbs?
     
  14. Kev M

    Kev M Cruisin' Guzzisti

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    Define "better".

    Better at making power? No - Carbs can generally be tuned just as well for performance.

    Better at making lower emissions? Sure

    Require less periodic maintenance and adjustment - probably.

    Cheaper to set-up or alter - No - Carbs are generally cheaper for that.

    Personally I'm done with carbs and I don't miss them, but they work amazingly well for what they are.
     
  15. Instg8r

    Instg8r Cruisin' Guzzisti

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    I guess that's what I'm getting at

    2tb's would be "better" cause the performance potential is there without the hassle and maintenance...

    I guess when it comes to more extensive mods would the debate of carbs vs tb's become more of an issue...like If I were to get hi flow heads and upgraded camshaft and valves etc etc.....would the GT-RX ECU/PCV/AT be more picky or cause some other issues?


    Matt
     
  16. pokeyjoe

    pokeyjoe High Miler

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    Well, the GT-RX package should be able to handle whatever you do, however at some point you would need bigger injectors and maybe a different fuel pump. I don't know if anyone has gone that far yet, but maybe Todd can chime in.
     
  17. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    I just got back into town, and I'm playing catch up on everything.
    If you stick with stock displacement, most anything you'll do can be handled by my full fueling kit. *IF* it exceeds the flow capability of the stock injectors (not likely), they can be easily upsized.
     
  18. Instg8r

    Instg8r Cruisin' Guzzisti

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    Todd what are your thoughts on the 1TB? Do you think that hi flow heads, big cam etc etc will be restricted in max potential with 1TB? Can the Rpm limt be increased? I'd assume that it would increase top end power beyond the 7600 rpm limiter? Or any reservations about any of this on the '13 1TB V7's?

    Matt
     
  19. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Matt, happy to expand on this if/when you take on the project. There should be no issue with hot-rodding a single T/B small block, especially with a dual 02-sensor (a single sensor for each injector) AutoTune-300 unit. I can increase the rev limit on the ECU, not a problem. There is a mechanical limit to the power you will make with a 2V head x RPM.
     
  20. Instg8r

    Instg8r Cruisin' Guzzisti

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    Thanks Todd

    I'm getting all my info together for the next off season, I was always going to go for the full GT-RX fuelling package. But I definitely will be doing some sort of head work and cam....I just haven't figured out what way yet.

    Matt
     

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