VVIS Butterfly Valve Screws - Beware

[TAG]

Every NSX owner should read this thread:

Thread 'SCREWED! The Tale of my "Rebuild" (long winded, sorry slow day at work)'

8 December 2011

Good day one and all! I believe this is my first real thread i am starting and am doing so with hopes of sparing someone my experience...

...one beautiful sunday afternoon, 11/13/11 to be exact, i was driving home from the Winter Park Concourse de Elegance, reminising on the cars at that show and at the Simply Clean 3 event the day before when my car cut off when I came to a stop at a red light :frown:

After the second or two it tooked to process baby (thats my cars name) had shut of i turned the key to the ignition on switch didnt observe anything awkward and proceeded to turn her...

• LDominicano

 

[bullithollywood]

Yeah, thats pretty scary! Thanks for the heads up Tom.
Anybody got a borescope handy I can borrow?

 

[Lude_2_NSX]

Just recently started to hear a rattle between 1500-2000 RPM on my 91 with 95K miles. I took it to Shad at Driving Ambition, and he suspected this could be the cause.

I stopped driving the car, and I will be removing the intake in a couple of days to take a look. I'll let you guys know what I find. In my opinion, this few hour inspection is a small price to pay to prevent engine failure.

 

[RYU]

If you rev high enough it'll just fly out the exhaust!

 

[S2G-Unit]

I know this is an old thread but is this screw issue something we should all be looking at fixing or is it a very rare occurrence?

 

[Yinzer]

Every NSX owner should read this thread:

http://nsxprime.com/forum/showthread.php?p=1506548#post1506548

Ahhhhhhhhhh! I hate when I run into a dead link within the new NSPRIME. Does anyone know how to use the post # in the link to find the thread?

I know this is an old thread but is this screw issue something we should all be looking at fixing or is it a very rare occurrence?

I'm curious about this too. With the snap ring issue, it was limited to a specific range of early cars, and once you checked if you didn't have the bore machining issue, you were safe.

But for VVIS, I'm reading loose screws have been found in later vehicles (LINK), and then also:

Is this a manufacturing error for which, once you check you have no issue, you're OK (like the snap ring issue)? Or is this something you'd be smart to monitor and check for this over time?

 

[MotorMouth93]

I fixed the link in the original post. When theres a link with a post number like that what you can do is

https://www.nsxprime.com/posts/1506548 to dig up the old post in the new database.

You can also DM me about dead links and I can edit them for future readers.