Jump to content
SAU Community

Exhaust Leak?

x-hobo

By x-hobo,
in Engines & Forced Induction

 Share

Recommended Posts

x-hobo Contributor

x-hobo

Posted
Posted

Hi guys,

Got some issues with my S2 R33 GTST, done a bit of a search and I'm thinking maybe an exhaust leak (as per this thread http://www.skylinesaustralia.com/forums/in...amp;hl=ticking).

I actually think I might have a couple of problems, but these are the symptoms. Firstly, not sure if this is related, but since I've had the car (about 6 weeks, but due to a broken window only on the road around 1.5 weeks of that) I've been having shuddering and misses at WOT; however, throttle of say .75 pulls pretty smoothly up to redline (maybe a slight hesitation sometimes). I was thinking this was probably more of a tune thing (running a Wolf3D ecu) or maybe sparks/coils.

Anyway, the other night I noticed a slight ticking coming from the right hand side of the engine bay (right hand side from driver's point of view, so left hand side if looking into bonnet), but I didn't think too much of it. The next morning I drove the car into my local Nissan service place to get them to put in my new window, and on the drive over there didn't notice anything amiss, though I doubt I hit boost and it was a short drive.

When I picked up the car that evening, as soon as I got into the car I knew something was wrong. The exhaust note was different (normally very quiet but now had a strong bass element) and on idle the car would vibrate strongly. When driving home, the car's boost wouldn't hold steady most of the time, and one time I even hit redline in first without building any boost at all. Strangely though it would occasionally boost fine, and when it did I think the exhaust note went back to normal.

Next day when I jumped in and started the car the ticking was now very loud and quite fast, both at idle and under load. The exhaust now "pulses", and has a very strong petrol smell. I haven't driven it since. My first impression that it was actually a mechanical sound (i.e. something clipping something else), my mate thought maybe electrical, but after searching it sounds like maybe it's a blown exhaust gasket.

Anyway, two questions. Firstly, does this sound about right for an exhaust gasket? Secondly, would it be safe to drive my car to a mechanic/exhaust place (off boost, obviously), or am I looking at towing? Not feeling up to attempting to DIY at this point. I'd really appreciate any input, cheers.

Link to comment
https://www.sau.com.au/forums/topic/127415-exhaust-leak/
Share on other sites
x-hobo Contributor

x-hobo

Posted
  • Author
Posted
That sounds just like an exhaust leak pre turbo, so either head to exhaust manifold or manifold to turbo gasket. No harm in driving it to get it fixed.

Good to hear, thanks for that. Should any workshop be able to fix it up for me off the bat or am I going to need to source original Nissan parts myself? Any ballpark figure on labour? Cheers.

Link to comment
https://www.sau.com.au/forums/topic/127415-exhaust-leak/#findComment-2355967
Share on other sites
r33_racer Grand Master

r33_racer

Posted
Posted

any mechanic should be able to do it..heaps of aftermarket gaskets around...alot of people make their own. I think nissan ones are like 30 bux or thereabouts. Being generous 2hrs to change the gasket. never been to a performance workshop before but guess on $/phr would be around $70...so maybe $140 all up not including parts. Thats a complete guess outta my ass...wonder how close i am? Anyone?

Link to comment
https://www.sau.com.au/forums/topic/127415-exhaust-leak/#findComment-2356005
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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • brillo
      Leak from Tokico BM50 Brake Master Cylinder

      By brillo · Posted

      Hi, SteveL Thank you very much for your reply, you seem to be the only person on the net who has come up with a definitive answer for which I am grateful. The "Leak" was more by way of wet bubbles when the pedal was depressed hard by a buddy while trying to gey a decent pedal when bleeding the system having fitted the rebuilt BM50 back in the car, which now makes perfect sense. A bit of a shame having just rebuilt my BM50, I did not touch the proportioning valve side of things, the BM50 was leaking from the primary piston seal and fluid was running down the the Brake booster hence the need to rebuild, I had never noticed any fluid leaking from that hole previously it only started when I refitted it to the car. The brake lines in the photo are "Kunifer" which is a Copper/Nickel alloy brake pipe, but are only the ones I use to bench bleed Master cylinders, they are perfectly legal to use on vehicles here in the UK, however the lines on the car are PVF coated steel. Thanks again for clearing this up for me, a purchase of a new BMC appears to be on the cards, I have been looking at various options in case my BM50 was not repairable and have looked at the HFM BM57 which I understand is manufactured in Australia.  
    • Gantai
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By Gantai · Posted

      PXL_20250828_063541093.TS.mp4
    • Gantai
      R33 GTST Steering Rack (49001-19U05) Rebuild?

      By Gantai · Posted

      Well the install is officially done. Filled with fluid and bled it today, but didn't get a chance to take it on a test drive. I'll throw some final pics of the lines and whatnot but you can definitely install a DMAX rack in an R33 with pretty minor mods. I think the only other thing I had to do that isn't documented here is grind a bit of the larger banjo fitting to get it to clear since the banjos are grouped much tighter on the DMAX rack. Also the dust boots from a R33 do not fit either fyi, so if you end up doing this install for whatever reason you'll need to grab those too. One caveat with buying the S15 dust boots however is that the clamps are too small to fit on the R33 inner tie rod since they're much thicker so keep the old clamps around. The boots also twist a bit when adjusting toe but it's not a big deal. No issues or leaks so far, steering feels good and it looks like there's a bit more lock now than I had before. Getting an alignment on Saturday so I'll see how it feels then but seems like it'll be good to go       
    • PranK
      R35 GT-R production ends after 18 years

      By PranK · Posted

    • SteveL
      Leak from Tokico BM50 Brake Master Cylinder

      By SteveL · Posted

      I don't get in here much anymore but I can help you with this.   The hole is a vent (air relief) for the brake proportioning valve, which is built into the master cylinder.    The bad news is that if brake fluid is leaking from that hole then it's getting past the proportioning valve seals.   The really bad news is that no spare parts are available for the proportioning valve either from Nissan or after market.     It's a bit of a PITA getting the proportioning valve out of the master cylinder body anyway but, fortunately, leaks from that area are rare in my experience. BTW, if those are copper (as such) brake lines you should get rid of them.    Bundy (steel) tube is a far better choice (and legal  in Australia - if that's where you are).
×
×
  • Create New...