Valve tap or lifter tap
 

How can you tell the difference between valve tap or lifter tap ...I have a very light tapping sound around 2k and 3k rpm ...I have tried several different oils which made no difference ...there isn’t any tapping at idle and there isn’t issues driving or in performance ....the tapping is very light and can’t be heard on a video , is this something that is normal with vq engines ?

Tapping can be common. A remedy I know others have had success with is adding the correct amount of Seafoam to the oil. Ester oil also helps to quiet it down. Such as Red Line.

I have tried Amsoil..royal purple...and mobile 1 ....haven’t tried any sea foam ....wanted to get more info on the sound

Check this thread:

https://r.tapatalk.com/shareLink/top...ink_source=app

Doesn’t really sound like that .....at idle it’s smooth and no sign of any sound ...only time I really hear it is between 2k-3k and even then it doesn’t sound as loud as those vids...one thing I did noticed was on my 2016 nismo ...I have the BP turbo kit and after install from a cold start I could hear more tapping sound and it would fade away after about 30 secs ...on my 2015 nismo which had a supercharger I didn’t have that sound until I removed the cats and went with test pipes ...after doing that both sounded very similar ...so I thought maybe the valvetrain noise might have been resonating more through the pipes ... it idk

The Z engines are noisy AF. Redline quieted mine down a bit. My 2 cents would be, dont let it get to your head. Took me a month of fretting to figure out that was normal.

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Whatever you do, Do not put Seafoam in it. What weight oils have you ran. A 5w30 works best. If you are using 0w40 you will get some noise until the car warms up a bit. That's what most boosted guys use. I do the same. It is more noticeable after an oil change. I have been looking to try some Motul X-Cess 5W-40.

Not to hijack this thread, but what's your issue with Seafoam? I've never added it to the oil, but I've been using it as a gas additive in all of my engines (cars, tractors, lawn mowers, snow blower, etc.) for years with no issues at all. I've also used it to clean out the intake of an old lawn mower and the difference it made was tremendous.

Sorry, I don't believe all the hype about Seafoam. I don't care about what it is made with. Just me, do what you want. The only fuel injector cleaner I have ever had work is BG 44k. That's it, and I have used many a product. Their intake cleaner also works very well. I went from getting 200 miles to a tank on my 300zxtt to getting 350 miles to the tank consistently. BG products flat out work.

Never heard of BG 44k, but I'll check it out.

There are a lot of independent tests which prove that Seafoam actually does work, but to each their own.

I run 5w30 and oil is changed every 3k miles ...car has 30k miles I didn’t go to 0w40 due to the BP kit using the oiless comp turbo

Was running 5w30 Amsoil...tried 5w30 royal purple ...( May have been slightly quieter ) then mobile 1 5w30

I kinda feel it may be normal but I rather look into it now just in case .....i Haven’t tried redline ..I think the royal purple may have been slightly quieter but hard to tell

Nissan's Ester Oil is supposed to quieten the valve train. Might be worth a try.

I thought that The ones I was using had ester in it as well...would there be a difference

There will probably be a difference due to the differences in formulae. No idea if there will be enough difference to matter.