Originally Posted by VitViper (Post 3390389)

I have two fully functioning spare VVEL actuators sitting here... been using them for some R&D. They cost me $150 each.



What's wrong with the VVEL system and higher rpm?

Originally Posted by VitViper (Post 3390389)

I have two fully functioning spare VVEL actuators sitting here... been using them for some R&D. They cost me $150 each.
?

Originally Posted by conmam (Post 3390104)

I totally agree with the efficiency. It is quite good. However, the very big downside is that the VVEL heads are not rebuildable since the VVEL ladders are not to be disassembled per Nissan and therefore if your intake valves clearance are out of specs and/or if you need to replace any of the intake valves components, you are out of luck since Nissan do not sell them separately from the heads. In this case, you must buy the entire head assembly, which is very expensive. Also, the VVEL actuator can be quite costly too.

For normally aspirated motors, it probably can squeeze more HP than any other non-VVEL heads, but really for forced induction, I would very much prefer either the VQ35HR or the VR38DETT heads since the difference is not worth the cost for cylinder head replacement. Also, if you wish to rev higher than 8000 rpm on a built motor, the VVEL system is a definite limiting factor. Just my opinion, that's all.

Originally Posted by MAMotorsports (Post 3386665)

We put a good amount of time into sorting out these heads and how they work. As we feel that unless you fully understand how an entire engine works, you should not be taking customers money to build them.


With knowledge based on years of engine development (From VVL SR20s, to taking over and evolving Menards Spec VK56 CORR motors and VK45 based daytona prototype and indy lights engines), we developed tooling to inspect, measure, and re-build these heads back to factory spec or maxing out the available adjustment otherwise. The tolerances of all the VVEL components have to be set to a high degree of precision outside the scope of a hobbyist's feasible budget as far as specialized tooling goes. There are specialized fixtures to measure every single component. We have also determined exact wear tolerances for all of the associated components and have documented all of the manufacturing differences from nissan's evolution of the design.

With all that said, there are still some issues with making adjustments. While we have solutions for racing applications utilizing different engine control hardware, we aren't ready to invest into something that is likely unmarketable for a more street based consumer. Time will tell as more and more people have been contacting us for more high end engine builds not limiting themselves to just forced induction and leaving the heads alone.


The issue does not lie with figuring out the "magic screw" as we have that sorted out, the issues lie with the lack of being able to control the throttling of the engine with the throttle bodies. Using the VVEL to throttle the engine by controlling the lift as the OEM ECU does becomes an issue when you increase the minimum lift via the adjustment.



We are very excited about the future of these engines, and very excited about the development we have undergone here with the VVEL system in itself. As the future unfolds, we look forward to what projects present themselves to us as we always enjoy a good challenge!


-Daelen
Ma-Motorsports
Daelen@ma-motorsports.com
410.593.7080

Originally Posted by MAMotorsports (Post 3391907)

Just to put it out there, the only reason these are considered a "Sealed part" from Nissan is they where not willing to give out measurements for inspection and reassembly.


With that said, we took the time to build jigs, and tools needed to measure and reassemble the entire VVEL system to factory specs, or modified. The goal was to be able to get a bucket of parts, and be able to re-assemble it to be a running, functioning head. We are at the point where we are able to do that.

Originally Posted by conmam (Post 3391912)

Yes, but there are no intake valves and intake valve parts offer by Nissan up until now. Assuming the VVEL ladder assembly issue is solved and out of the way, but what if we need to rebuild the cylinder head ? Man I love to see that aftermarket can supply those intake parts but so far I found none.

Originally Posted by conmam (Post 3391881)

The member " Megan370z " has plenty to tell you about the VVEL ladder failure. I talked to him 1.5 year ago and I believe that he told me that he sustained 8000 rpm from time to time at the time attack race. His VVEL ladder and arms were heavily damaged. He has been trying to get the VQ35HR heads on his 3.7L block since then. I personally believe that occasional 8000 rpm revving is fine with the VVEL head, but how long can it be safely sustained is questionable.

Originally Posted by conmam (Post 3391886)

Are your VVEL actuators new or used ? If they are used, how many miles on them if you know. Thanks

Originally Posted by VitViper (Post 3398429)

14.7psi on E65 fuel.

http://blog.vittuned.com/wp-content/...65_14_nowm.png

Originally Posted by conmam (Post 3399239)

Hi, is this still on factory OEM engine ?

Originally Posted by conmam (Post 3399239)

Hi, is this still on factory OEM engine ?

Originally Posted by F.I. Inc. (Post 3410894)

UPDATE,

051: SpecialtyZ, 052: MA-Motorsports, 053: SOHO Motorsports, 054: Bullitt5897

^^^THANK YOU ALL FOR YOUR RECENT ORDERS^^^

000: TerribleONE: (Installed)
001: djtodd (Installed)
002: VSS370z (Installed)
003: cycy89 (Installed)
004: dirTy_shoeZ (Installed)
005: faceglide (Installed)
006: RoyaltyB (Installed)
007: nklear (Installed)
008: mfeinst (Installed)
009: armbar3 (Installed)
010: hjo1078 (Installed)
011: RDZ Motorsports (Installed)
012: gendr777 (Installed)
013: Forged Performance (Installed)
014: HotRodz (Installed)
015: Gasdoc (Installed)
016: Arrvaxx (Installed)
017: SpecialtyZ (Installed)
018: hurahn (Delivered)
019: jaggers (Installed)
020: Nixlimited (Installed)
021: thetreetopper (Installed)
022: Benci (Installed)
023: Tumbs_81 (Installed)
024: Jaafer A. (Installed)
025: RT Tuning (Installed)
026: CF Racing (Installed)
027: Osiris (Installed)
028: Krazy.1K (Installed)
029: George B. (G37) (Installed)
030: vh1 (Installed)
031: SpecialtyZ (Installed)
032: MC-Performance (Saudi Arabia) (Installed)
033: Corey D. (Non forum member) (Installed)
034: rob298mx (Installed)
035: carbonZ (Install @ Forged Performance)
036: SpecialtyZ (Installed)
037: Akrobatik (Installed)
038: MC-Performance (Installed)
039: Nova (Install @ Forged Performance) (Installed)
040: conmam (Delivered)
041: GeauxTigers1 (Installed)
042: NeverBoneStock (G37) (Delivered)
043: 2J-Racing (G37) (Installed)
044: Katjmmx (Installed)
045: SpecialtyZ (Installed)
046: VitViper (Installed)
047: Adalvar (Installed)
048: BlueRanger (Install @ FI)
049: FrostZ34 (Delivered)
050: PADDLEWAYNE (Building)
051: SpecialtyZ (Building)
052: MA-Motorsports (Building)
053: SOHO Motorsports (Building)
054: Bullitt5897(Building)

THANK YOU ALL!

Tony

Originally Posted by Elmo370z (Post 3464584)

damn, what power level are you shooting for?

Originally Posted by Elmo370z (Post 3464916)

Which is 1100whp?

Originally Posted by bullitt5897 (Post 3464939)

currently just over 1000whp at 28psi on 93oct

Originally Posted by TerribleONE (Post 3480491)

I know I'm late to the party but holy big turbo batman.

My car is still running like a raped ape! :driving: haven't had one issue except for the wrinkles I'm getting on my face from smiling so much when I drive it :rofl2:

Originally Posted by Rusty (Post 3480500)

Do you look like this?

Originally Posted by bullitt5897 (Post 3464467)

All I have to say is you can't go wrong with fast intentions! Check out these bad boys!!!

http://i234.photobucket.com/albums/e...pswl3a4yio.jpg

Originally Posted by Rusty (Post 3480500)

Do you look like this?

Originally Posted by bullitt5897 (Post 3485061)

Fast intentions kicked butt at the Forged performance airstrip event last week. all the stage 2 kits were in the 600-700whp range and all were putting near 140mph in less than a 1/3rd mile on crappy surface. The stage 4 kit was spinning tires in every gear but was still able to pull several ~150+mph runs. The guys at soho motorsports gave the stage 4 a good run for the money. Their traction control really helped while the stage 4 car did not have the new traction control enabled. all in all a great event and a lot of fast Zs!!!

Originally Posted by bullitt5897 (Post 3485061)

Fast intentions kicked butt at the Forged performance airstrip event last week. all the stage 2 kits were in the 600-700whp range and all were putting near 140mph in less than a 1/3rd mile on crappy surface. The stage 4 kit was spinning tires in every gear but was still able to pull several ~150+mph runs. The guys at soho motorsports gave the stage 4 a good run for the money. Their traction control really helped while the stage 4 car did not have the new traction control enabled. all in all a great event and a lot of fast Zs!!!

Originally Posted by Hotrodz (Post 3485079)

The Soho car is totally legit...pump gas and methanol. She ran like she was a tweeker looking for another fix.

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