Jump to content
SAU Community

Recommended Posts

recently i put an r34 gt-t turbo in my r32gts-t

anyway since then i've had this odd sounds, it kind of sounds like it could be an exhaust leak or something rattling even

it loudest from under the passenger side door, but you can hear it a bit in the engine bay

at first i thought it was an exhaust leak from the joint in the exhaust between the front pipe and cat

i can confidently say that isn't the problem after replacing the gasket and bolts and what not

at first i instantly thought it was an exhaust leak from a turbo gasket but i have been over these and they certainly do no appear to be leaking all the nuts and bolts are done up tight the head to exhaust mani gasket has also been replaced a bit less than a year ago. (all gaskets were replaced with legit nissan items)

this sound is driving me insane, i'm now left thinking has my cat collapsed? could shit be rattling around in side of it because it sounds like it when i lay under the car

the cat isn't anything special it's been welded onto the exhaust on the outlet side of it because the exhaust is 3.5" and the car is either stock or something but it's 3"

is it even possible to have something rattling around in a cat? i'll admit i don't really know what goes into one

Thanks

Dan

Link to comment
https://www.sau.com.au/forums/topic/323645-collapsed-cat/
Share on other sites

Cats can break apart and rattle if they are ceramic style cat like the stock ones. After market metal ones usually just collapse and weld them selves together from the heat.

Symptoms usually are a different exhaust note (if you can notice it) and a loss in power (depending on how collapsed it is). Really only way to be sure is pulling it off and having a look.

Link to comment
https://www.sau.com.au/forums/topic/323645-collapsed-cat/#findComment-5275856
Share on other sites

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


  • Similar Content

  • Latest Posts

    • My thought is if you were just moving it forward and the upstream geometry remained the same, then no difference at all. But because the current one has the filter direct into the AFM inlet, you effectively have the best chance of a completely symmetric air flow profile upstream, and in, the AFM, whilst the aftermarket inlet thingo has a (small, to be sure) bend between the filter and the AFM. That would bias the flow to the outside of the bend (downstream of the bend) which might well reduce the size of the signal seen by the AFM, for the same total flow rate. Having said that: If you're proposing to make your inlet look like a hybrid of your existing one and the aftermarket one, such that there is no bend where the filter is clamped on... then I say it will be just fine. If there is going to be such a bend, then, if you can align the insertion of the AFM blade such that it is at right angles to the plane of the bend, then there is a better than even chance that the centreline velocity where the blade is will remain more or less the same, and the velocity will just be a little faster to the outside of that, and just a little slower to the inside. **This is not professional investment advice and you should consult a suitably qualified ouija board, tea leaves or the intestines of a goat for more accurate prognostication.
    • Hi Tao, Thanks for your reply.  It's been a while and I managed to get the valve stem seals replaced with the head on the car.  Unfortunately this didn't solve my issue, the car still smokes a lot after idling (to be honest during idle you can see a bit of blue smoke from the exhaust), same after deceleration. I will try disconnecting the valve cover breathers, do I leave the PCV valve in? By engine oil drain pipe, do you mean the turbo oil drain?
    • What about if you just give it direct 12v and earth?
    • Hi guys . Can someone help me  I bought an Android screen for my Nissan fuga but it won't turn on   
    • My guesstimate, with no real numbers to back it up, is it won't effect it greatly at all.its not a huge change in position, and I can't see the air flow changing from in turbulence that much based on distance, and what's in front of it. Johnny and Brad may have some more numbers to share from experience though.
×
×
  • Create New...