Jump to content
SAU Community

Knock Went Up To 219 On Idle?

VSPEC-Boy
 Share

Recommended Posts

VSPEC-Boy Contributor

VSPEC-Boy

Posted
Posted

Hi Guys,

I own an R33 GTR, got it tuned last monday making 275awkw's.

Was very happy with the tune and the most it would ever knock was about 48 when I was giving it alot of stick, which is well below the danger levels.

Last night I was doing some spirited driving and I hit the rev limiter accidentally in second gear and I saw my engine light come on, checked my FC Hand controller and knock went up to 168!!

Pull over straight away and my catch can looked full of oil, no tapping sounds in the engine, took off the engine cap oil looks brown(perfect), no smoke coming out from the back. basically everything sounded perfect.

Really weird thing is that under no load just sitting on idle tapping the throttle it goes up to 219 knock? wtf how is this possible?

I just drove my car straight home and didn't take it over 2K.

I am taking it back to my tuner first thing tomorrow morning, and im hoping its nothing too serious... i.e rebuild.

What are peoples thoughts on the matter?

Thanks,

Harry

Link to comment
https://www.sau.com.au/forums/topic/269299-knock-went-up-to-219-on-idle/
Share on other sites
Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

ignore any knock readings when your on the rev limiter.

plumb your catch can to drain back to the sump. your tune sounds fine. the knock sensors are probly shit and not working properly hence the false readings. if you cannot hear it knocking if it goes over 100 then its not knocking

STATUS Grand Master

STATUS

Posted
Posted
Define "spirited driving" so i can help diagnose the problem

Guilt toy, are u still coming to melbourne with ur gizzmo?

got one you can borrow if you need it, hows the rex coming along?

VSPEC-Boy Contributor

VSPEC-Boy

Posted
  • Author
Posted
ignore any knock readings when your on the rev limiter.

plumb your catch can to drain back to the sump. your tune sounds fine. the knock sensors are probly shit and not working properly hence the false readings. if you cannot hear it knocking if it goes over 100 then its not knocking

So its probably just an electrical problem then?

Very strange that it started happening right after I gave it a bit of hard time though? Thats why I thought I had done some serious damage etc.

I will take it in to the mechanic first thing in the morning though and we'll see how it goes.

Taso84 Mentor

Taso84

Posted
Posted
got one you can borrow if you need it, hows the rex coming along?

Thanks mate, appreciate it, altho i think you got me mixed up with another Taso coz i don't have a rex. If i come down with a slab do u reckon u can perform the test for me. Guilt toy mentioned that he had to do some modifications to the knock sensor to make it work on the his 33.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted
Thanks mate, appreciate it, altho i think you got me mixed up with another Taso coz i don't have a rex. If i come down with a slab do u reckon u can perform the test for me. Guilt toy mentioned that he had to do some modifications to the knock sensor to make it work on the his 33.

yeah thats to use the knock sensors in the stock rb25 positions. im sure trent has places that he mounts them that he can show you.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      R34 gtt rb25det neo timing belt kit

      By GTSBoy · Posted

      Oh, yeah, look - here's the thing. You always replace the tensioner when you're going in there to replace a belt....under normal circumstances. You want to make sure it is good and safe, and that you don't create a reason to take the front of the bloody motor apart again. But in this case, OP is replacing a belt that has aged out on time, not usage. The belt is a million miles away from aging out on usage. The belt gets a time "limit" merely because it is made of rubber and can degrade naturally. The tensioner? Not so much. I reckon it could last forever on the current usage pattern. So I reckon if the thing is going to continue to get used at the same rate, replacing the tensioner is somewhat gratuitous. Would I replace it if I was doing it on my car right now? Hell yes. Because my car does 10-20 thousand kays a year. So it's all going to be the same thrashedness. Would I YOLO it on OP's car. More than likely.
    • GTSBoy
      R32 Sedan - Grip and Drift (have my cake and eat it too build)

      By GTSBoy · Posted

      I dunno. I think any one of those from each side to sump is probably enough. Remember - this is about creating a path for gas flow up from the sump to the cam covers. That gas flow then has to leave via the lines to the catch can. There's probably little point in providing 100% more capacity from sump up to covers cf. what you have from there to the catch can. Put in the 3 convenient ones? Any which way that you see fit. That'd be my thoughts.
    • CRSKmD
      R32 Sedan - Grip and Drift (have my cake and eat it too build)

      By CRSKmD · Posted

      Getting holes drilled into to cam covers and AN10 fitting welded on. My sump has 2x AN10 fittings on it already. These are the options I have come up with that can be done without needing to remove the sump to add more fittings. In all options front of passenger side cover connects to VCT head drain bung (i know this isn't the best spot but my feeling is it must do something). Option 1 (pink). The back of each cam covers gets its own line to sump. Option 2 (blue). The back of each cam covers are linked and share a line to sump. The front of drivers side gets its own line. Option 3 (Black). Drivers side are Tee'd together and share a line to the sump. Passenger side rear gets its one line to the sump.
    • silviaz
      R34 gtt rb25det neo timing belt kit

      By silviaz · Posted

      I'd be surprised if Nissan doesn't mention it in the manual as it seems unlikely that a tensioner is going to last 200,000km.
    • Nightmare_mistress_R33
      CD009 RB Conversion

      By Nightmare_mistress_R33 · Posted

      Tapin,    So got mine up and realize a few things. First was my slave line doesn’t reach the other side, so I have to get a longer hose made. I want to ask did you have to extend your wires for the CD009 sensors? One on the driver side(right side of car looking at the car from the rear) and one on the passenger side( the left side of car from rear). And do you know what those two sensors are respectively? I know it’s not Speedo since we talked on this already. And I may have to separate the trans again to swap out throw out bearing. We will see. Did you run your RB slave cylinder? I know you cracked your original but replaced it with a nismo. But wasn’t sure if you bought the one designed for the CD009 or not. Thanks 
×
×
  • Create New...