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2012 V7 with 4V Heads

Getting close to running this bike. I got the intakes put on, I have an airbox that I made which houses two K&N filters. I duct the intake air to the throttle bodies using the original intake boots and 2 inch scat hose.
The exhaust ports are .020 deeper on the four valve heads, had to stack the exhaust gaskets to get the pipe to tighten up. I am going to see if the exhaust sleeves for the Lario are a bit longer, might need to order some so I don't have to stack up two gaskets..Just waiting on a timing chain tensioner now...I broke mine during disassembly..I will post some pics...

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Two gaskets are pretty common on Lario heads.. I'll go out and measure the Lario exhaust sleeves after I hit the showers..

Edit:
Looks like about 1.030"
 
Last edited:
Chuck in Indiana said:
Two gaskets are pretty common on Lario heads.. I'll go out and measure the Lario exhaust sleeves after I hit the showers.. Edit: Looks like about 1.030"
Click to expand...
Yep, that is what I have for the V7C sleeves. Hmmmm. Maybe it wouldn't hurt to mill off .025" from the stud mounts while the heads are getting guides and seats put in. Just something to consider for Todd. Here are some pics.

image.webp image.webp image.webp image.webp image.webp image.webp
 
After waiting for overnight parts shipments that took five days, I finally ran the bike today. The four valve heads made a big difference in the bike, hard to quantify. The acceleration is effortless now, that is the word that comes to mind. Quite a huge improvement. I need to thank Todd in particular, for flashing my ECU and being a steadfast resource for this build. I literally could not have done it with out his work on fueling control. Thanks Todd!!
Gotta see about getting some videos on here....
 
mwrenn said:
No luck uploading a vid
Click to expand...
Sorry Mike, I'll have to see if my server can handle video uploads. I mostly post them to YouTube and link them here. If you need help with it, send a note to me direct email... which I still have to reply to your last one.
 
GT-Rx® said:
You got it Mike, looks like she's a real runner now. Congrats!
Click to expand...
Thanks Man! Yes, she runs freaking good. Better than I imagined. Big difference through the whole RPM range. A quick note, you can hear the valves pretty loud in the vids. I had screwed up and set the intakes the same as the exhausts, had them all at .006". I decided to check the clearance, and wound up setting the intakes to .004". It really quieted things down. The bike sounds like it did before with the two valve heads.
I gotta say, trying be objective in my impressions, there is a noticeable difference in the power. The torque is still all there, but it just winds up easier, just effortless. Feels like I'm going downhill all the time. When I leave a stop sign, I give it the normal throttle I am used to, then I look down and I'm doing 60 in a 45 zone...like that...
Anyway, fun stuff. Gotta put some miles on now, make sure it's reliable.
 
Brian UK said:
So how much of this change in power is due to the Lario heads, and how much to the reflash?
Click to expand...
The heads would be responsible for any power gains, and the flash and the fully dynamic PC-V/AT kit would simply allow for the correct fueling. The PC-V/AT are simply a tool to offer real-time corrections based on air/fuel data from the 02-sensor... think of it as a jet-kit for carbs. Only mechanical changes can increase power. I'll be performance flowing the set I install on the RentAGuzzi V7 II. Thanks to Mike in advance for getting things rolling.
 
Yes, the bike ran a lot better from stock after installation of the PC V and the reflash from Todd. Waaay better than stock.
It will be interesting to see what the Dyno says on the horsepower.
The bike has been a progression of improvements, the heads are just the latest addition.
 
And I'll add now that thanks to Mike, there will be another V7 with this conversion once the new V7 II arrives; It will go into Fleet duty for RentAGuzzi. The heads are at the machinists now.
 
GT-Rx® said:
And I'll add now that thanks to Mike, there will be another V7 with this conversion once the new V7 II arrives; It will go into Fleet duty for RentAGuzzi. The heads are at the machinists now.
Click to expand...
That is just going to be bad ass! Man....
 
Since 95%of the engineering is done and there is a nice performance increase it makes me wonder why Guzzi did not do this to the new V7.
 
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