vtc/valve noise and knock. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jr_ss · 06-12-2013, 07:16 AM

I suggest you retain the VTC. Your car is going to feel extremely sluggish without it. There are used VTC gears that pop up occasionally. Either way, you can buy a new one and not have to replace it for 5-10years. That's a pretty good product life in my eyes and will certainly keep the low-end torque the S14/15 motors offer.

It could be gear the knock sensor is picking up, depending on how sensitive the knock sensor is set. Are you running lean up top? Do you have a means to see it? What are your mods? Any chance you can datalog timing an fuel maps at that point?

06-12-2013, 07:16 AM	#4
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,415 Trader Rating: (35) Feedback Score: 35 reviews	I suggest you retain the VTC. Your car is going to feel extremely sluggish without it. There are used VTC gears that pop up occasionally. Either way, you can buy a new one and not have to replace it for 5-10years. That's a pretty good product life in my eyes and will certainly keep the low-end torque the S14/15 motors offer. It could be gear the knock sensor is picking up, depending on how sensitive the knock sensor is set. Are you running lean up top? Do you have a means to see it? What are your mods? Any chance you can datalog timing an fuel maps at that point? __________________ My SR20VET Does your VTC gear rattle in your S14/15 SR? PM me.