Vvel ????

pokeyl · 05-27-2011, 12:31 AM

Has someone opened up the valve covers and turned the ajustments on the VVEL?

If so, what happened? Can Nissan tell? Will the valves hit the pistons?

It seems like a trip to a dyno and a few hours would show the result. If we see any changed other than a larger cam would cause... re-index the stepper motors? How dose VVEL know the position of the steppers?

Just some ideas.

If some one has had a motor appart and checked the piston to valve clearance, and Nissan can't tell, I'll take my car the the dyno and see whats up.

pokeyl · 06-01-2011, 12:39 PM

Anyone?

nismodreamr · 06-01-2011, 12:57 PM

I am a total n00b at engine internals, but figured I would chime in to maybe start some help for you man, I believe the vq is an interference type engine, I am assuming this means it is possible to cause damage internally (pistons hitting valves etc) by adjusting things to aggresively? Like I said I know minimal stuff about engine internals and if someone knows for sure plz help pokeyl out!

XwChriswX · 06-01-2011, 01:20 PM

The only shop (that is known) to be attempting to crack VVEL is GTM, and they haven't finalized anything yet. It's supposedly their next project to complete now that the Stage 2 S/C is nearing completion. So hopefully in the next few months we might see something... But I'm not expecting much for a while...

nismodreamr · 06-01-2011, 01:27 PM

chrisw do you know if it is an interference type engine?

ChrisSlicks · 06-01-2011, 03:12 PM

Quote:

Originally Posted by nismodreamr

chrisw do you know if it is an interference type engine?

It is most definitely an interference engine.

nismodreamr · 06-01-2011, 03:25 PM

Quote:

Originally Posted by ChrisSlicks

It is most definitely an interference engine.

so to answer the OP's first question, messing around with the timing / vvel could potentially cause damage internally, right? Like I said I do not know much about internals or tuning besides basic things like afr's and such

ChrisSlicks · 06-01-2011, 03:30 PM

Quote:

Originally Posted by nismodreamr

so to answer the OP's first question, messing around with the timing / vvel could potentially cause damage internally, right? Like I said I do not know much about internals or tuning besides basic things like afr's and such

It will depend on to what extent the valve timing can be adjusted, but yes worst case you could have a piston hit the valve.

nismodreamr · 06-01-2011, 03:33 PM

Quote:

Originally Posted by ChrisSlicks

It will depend on to what extent the valve timing can be adjusted, but yes worst case you could have a piston hit the valve.

thank you for the info, hopefully this helps the OP, and I learned a bit as well!

05-27-2011, 12:31 AM	#1 (permalink)
pokeyl Track Member Join Date: Nov 2010 Location: DFS Posts: 891 Drives: ??? Rep Power: 54	Vvel ???? Has someone opened up the valve covers and turned the ajustments on the VVEL? If so, what happened? Can Nissan tell? Will the valves hit the pistons? It seems like a trip to a dyno and a few hours would show the result. If we see any changed other than a larger cam would cause... re-index the stepper motors? How dose VVEL know the position of the steppers? Just some ideas. If some one has had a motor appart and checked the piston to valve clearance, and Nissan can't tell, I'll take my car the the dyno and see whats up.

06-01-2011, 12:39 PM	#2 (permalink)
pokeyl Track Member Join Date: Nov 2010 Location: DFS Posts: 891 Drives: ??? Rep Power: 54	Anyone? __________________ It's not my fault I'm old, I was born a very long time ago!

06-01-2011, 12:57 PM	#3 (permalink)
nismodreamr Enthusiast Member Join Date: Apr 2011 Location: Des Moines Posts: 367 Drives: 11 Z34 MagB 6MT Rep Power: 14	I am a total n00b at engine internals, but figured I would chime in to maybe start some help for you man, I believe the vq is an interference type engine, I am assuming this means it is possible to cause damage internally (pistons hitting valves etc) by adjusting things to aggresively? Like I said I know minimal stuff about engine internals and if someone knows for sure plz help pokeyl out! __________________ 2011 370z Touring+Sport Magnetic Black 6MT Michelin - HKS - Titek - BC Racing - Volk TE-37SL - Stillen - PWJDM - Seibon

06-01-2011, 01:20 PM	#4 (permalink)
XwChriswX WFLYIDNNE Join Date: Jul 2009 Location: In The Fastlane Posts: 50,648 Drives: 02 GDB WRX Rep Power: 451	The only shop (that is known) to be attempting to crack VVEL is GTM, and they haven't finalized anything yet. It's supposedly their next project to complete now that the Stage 2 S/C is nearing completion. So hopefully in the next few months we might see something... But I'm not expecting much for a while... __________________ Bonnie - Stage 2, Audio build coming this fall! R.I.P. Abby 3/29/10 - 3/30/14

06-01-2011, 01:27 PM	#5 (permalink)
nismodreamr Enthusiast Member Join Date: Apr 2011 Location: Des Moines Posts: 367 Drives: 11 Z34 MagB 6MT Rep Power: 14	chrisw do you know if it is an interference type engine? __________________ 2011 370z Touring+Sport Magnetic Black 6MT Michelin - HKS - Titek - BC Racing - Volk TE-37SL - Stillen - PWJDM - Seibon

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