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GTM V7R-820 QuattroValvole Info & Dyno Runs

King of Fleece

Cruisin' Guzzisti
GT Famiglia
Joined
Dec 10, 2014
Messages
248
Location
Western New York
Nice job and well done all around.
I'm happy with my GuzziTech re-mapped V 7 and don't lust for more.
For those who want it it sure looks like the package to get, though. I get "too much is just enough" though!
 

Trout

GT Reference
Joined
Feb 27, 2010
Messages
1,209
Location
Gainesville
Why ain't you on the east coast???

If I didn't hate flying I'd jet out there for a play day.

Wife is flying out over xmas to see her people & I'm not going because they all know I don't fly.....now I really can't go..BAH!!
 

GTM®

Administrator
Staff member
GT di Razza Pura
Joined
Jul 1, 2009
Messages
12,744
Location
Malibu
Why ain't you on the east coast??? If I didn't hate flying I'd jet out there for a play day. Is that with the stock cam?
It's a quick flight, just red-eye so you can sleep with a sedative. It'll be worth it.
Yes, stock cam. I left it once I saw the dyno results of @mwrenn's 750-4V. Impressive if you haven't seen it HERE

Should have mine on the dyno once I sort the fueling next week and get a few miles on it.

GT Rx V7 820 4V
 

Trout

GT Reference
Joined
Feb 27, 2010
Messages
1,209
Location
Gainesville
Off subject but do you ever sell off any of your rental units? i'd love to have a GuzziTech V7 or Racer that had been tweaked by you.
 

GTM®

Administrator
Staff member
GT di Razza Pura
Joined
Jul 1, 2009
Messages
12,744
Location
Malibu
Off subject but do you ever sell off any of your rental units? i'd love to have a GuzziTech V7 or Racer that had been tweaked by you.
Yes I sure do, however I usually have a few people in line who ask the same.
 

Thetretelayer

Just got it firing!
Joined
May 6, 2016
Messages
1
Location
Italy
Hi, it's possible to read and see what pieces have been used for this kit and maybe some photos?

Bigger pistons, OK but which type, made by who? Etc

4 valves, OK, but dimension, material, producer etc?

The head has been modified for the 4 valves, OK but still remain a flat heron or has been re-engineered an emispheric head?

Moreover, in the '80, first the Lario and then the V75 had 4 valves (as you know) with lower displacement of this kit but with higher power, is strange... Isn't it?
They had problem with valves (too soft) and spring valves (too stiff) but with modern production and materials could be easily resolved.

Probably this my, could appear a bit critic, but I'm a big fan of Guzzi and I really appreciate every job that will improve the small block.
 

Dan Porges

Just got it firing!
Joined
May 31, 2016
Messages
18
Location
Natick, MA
Any thought on the price point for the whole kit? Does it come with everything needed to turn a V7 into a V8-Quatro?
 

GTM®

Administrator
Staff member
GT di Razza Pura
Joined
Jul 1, 2009
Messages
12,744
Location
Malibu
Dan, yes it does. Approximate cost is $3500 outside of labor. Interest has been so minimal that I haven't ordered another run of pistons yet. Contact me direct email; Todd at GuzziTech.com
 

GTM®

Administrator
Staff member
GT di Razza Pura
Joined
Jul 1, 2009
Messages
12,744
Location
Malibu

GTM®

Administrator
Staff member
GT di Razza Pura
Joined
Jul 1, 2009
Messages
12,744
Location
Malibu
Do you have a final dyno sheet?
Not finished completely yet as I'm sure I can achieve 60 rwhp as it is a zero-mile motor and I have some work left to do on the mapping, but here it is for now... red trace is a stock V7, blue is Mike's 750-4V and the green is my 820-4V. That is a ~65%+ increase in power and ~70% torque over stock.
New dyno graph added below after we got some miles on it with final tuning.

V7 V74V GTV8204V

097AAFB7 E173 49A8 AE88 F7805A08EDAD


sunddyno-820-4v-jpg.20983
 

Trout

GT Reference
Joined
Feb 27, 2010
Messages
1,209
Location
Gainesville
Wow! The blue & the green follow almost the exact same pattern but the green shows big improvement.
This is on the V7R rental bike?
 
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