Jump to content
SAU Community

Exhaust Manifold Leak?

Shadex

By Shadex,
in Engines & Forced Induction

 Share

Recommended Posts

Shadex Collaborator

Shadex

Posted
Posted

Hey all, Just looking for abit of advice on what could be wrong with my car..

First of all i had a exhaust leak about a month or so back.. and we pin'ed it to being the manifold.. So i replaced the manifold gasket and turbo to manifold gasket.. then finally got it all back together.. and it was fine, working sweet ( for about 2 weeks ).. only problem then was.. i had lost power.. but we found that out to be the boost controller.. so stuck a new one on.. put it back up to 13psi.. Drove around pretty hard for about 2 hours or so.. and then noticed a real loud noise.. the same noise as a screamer pipe/external waste gate basicly but loseing alot of power though it.. So i thought it must be the nuts on the manifold need re-tightning.. so took it all appart today.. and they are still tight as they where when we put the manifold back on.. So now, im stuck for ideas.. Does anyone have any idea what could be wrong?

Thanks in advance.

Link to comment
https://www.sau.com.au/forums/topic/254803-exhaust-manifold-leak/
Share on other sites
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Did you replace the manifold studs... because i pray you did, they should always be replaced when doing the manifold gasket or they are likely to break again somewhere down the line. Have a look and see if one has broken and the gasket blown out.

also check the dump gasket is there also, could be either or

Shadex Collaborator

Shadex

Posted
  • Author
Posted

I replaced 6 out of 8 studs for new ones.. and yes the gaskets are genuine Nissan ones.. Also.. one of the bolts just snapped that leads the cooler piping in to the turbo.. there's 2 long bolts and a short one.. The short one is the one that broke.. Anyone no where i can get a new one of them? :S

Blitz Grand Master

Blitz

Posted
Posted
I replaced 6 out of 8 studs for new ones.. and yes the gaskets are genuine Nissan ones.. Also.. one of the bolts just snapped that leads the cooler piping in to the turbo.. there's 2 long bolts and a short one.. The short one is the one that broke.. Anyone no where i can get a new one of them? :S

Any reason why you didn't replace all the studs?

If you are chasing replacement bolts and the like, give Just Jap in Sydney a call, they will have or can get what you are after.

SDEWY5 Community Regular

SDEWY5

Posted
Posted

i had a odd problem, loosely related that fkn did my head in for like 3 days. Had exhaust leak, i was certain it was T3 flange gasket from manifold to turbo so i pulled it all off...put it all back together using all genuine nissan gaskets, new nuts etc...started the car..same leak. I could feel the exhaust gas coming from the same spot, now i was sure i did everything right but went over it again and pulled everything apart as i did the previous time, gaskets were all fine. No sign of a leak except for the bearing had black exhaust marks all over it. Put everything back together...same leak so now im pulling my hair out. Then i noticed a bolt just holding in the thread of the exhaust housing of the turbo...somehow it had worked its way loose and it was coming straight out of the compressor housing onto the turbo centre..lucky i found it coz i was ready to incinerate the car...was so unnoticeable just by sheer chance i saw it...

Sorry thought id share that heh..

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

    • JC71
      new 1.5 LSD issues/concerns

      By JC71 · Posted

      sold listed as a Tomei LSD 1.5 Way For 1998+ Nissan Skyline ER34 25GT RB25DE w/Open R200 https://www.ebay.com/itm/174006114594?campid=5338967980&mkevt=1&mkcid=1&toolid=10050&customid=&mkrid=711-53200-19255-0&loc_physical_ms=108689&loc_interest_ms=&campid=5338967980&mkevt=1&mkcid=1&toolid=10050&customid=71883f2ccc571356e0a757bc7adfdde2&mkrid=710-53481-19255-0&loc_physical_ms=108689&loc_interest_ms= it went in like butter all gears, alignment, back lash etc, rotation and clearances correct, and if rolling all rotates smooth and free when coasting down road , clutch in or out over 10 mph smooth... its the binding, clunking and jerking from a stop that is most concerning, also seems like its going to tear the tires off in 10 miles of normal road driving. 
    • Kinkstaah
      new 1.5 LSD issues/concerns

      By Kinkstaah · Posted

      What 1.5 way? There's no such thing really as a 1.5 way, just different ways of explaining 2 ways with different ramp rates. HOWEVER. In any driving in a straight line your 1.5 or 2 or 1.7 way should have no clunking at all. With the clutch fully depressed the diff should be silent (unless it's welded but I'm assuming it's not). Something aint right here.
    • JC71
      new 1.5 LSD issues/concerns

      By JC71 · Posted

      Clutch is a spec brand, new clutch system,( PP, flywheel, friction disc, etc. pull type) installed 100 miles ago, with no problems.
    • JC71
      new 1.5 LSD issues/concerns

      By JC71 · Posted

      looking for some help and maybe some insight on others experience with a new LSD. R34 GT ran and drove beautifully, but always alot of grip loss due to the open R200 rear end, so I just installed a new 1.5 LSD way into the stock open R200 for a ER34. Simple. Everything seemed right. I test drove for the first time this weekend. as I started to back out the garage the first time slowly with tires straight it sounded and felt like I had a loose or half disconnected drive shaft...that was clucking around loose and shaking entire vehicle, and making it feel like the trans clutch was spontaneously slipping then grabbing very roughly while just letting out pedal slowly. I backed it out went to pull forward with the same noise, shake and slip grab feeling with hesitation, I turned the tires to back out more and then pulled ahead some same thing but worst because of added wheel resistance (which that I expected) puzzled … pulling it back in checking everything over and finding nothing wrong, I tried it the next day. same thing, couldn’t believe how it shook everything again making a terrible noise and making it feel like the trans clutch was slipping and grabbing, but I got it out of garage into the driveway, got it straight, drove forward and then reveres a few times in a straight line everything shaking , causing what felt like clutch slip and grab every time, sounded like right behind front driver tire and I could feel it in the floor board with my feet,... worst right when beginning to let clutch pedal out to engage slightly, shuttering and sounding terrible along the way…I managed to slowly get down the road, babying it the whole way, once I was rolling (out of 1st) seemed to be better and between shifts, then clutch felt closer to normal…not slip/ grab etc., but back down to any stop, straight road or turning, same thing. Made no difference if all tires were straight or if I was turning. All other gauge read out correct. with in 2 miles as planned I reached the empty parking lot and performed the break in procedure that came with lsd, essentially to drive in a figure 8 a bunch.  Did this, binding chattering, and shaking the car the whole way. I drove it back home seemed somewhat normal once I was in straight line and past 10 mph or so, and I know it will “bind” on corners and cause some tires squeal when turning especially from a stop, but when I begin to move it still causes what feels like the trans clutch to slip and jerk badly as well as shaking the entire car, and sounds terrible, that I didn’t expect. I used the fluid they supplied with LSD kit and did the breaking, planning to change fluid as they suggest after breaking, but wondering will it get smoother or less aggressive with use? maybe a 1.5 is just too aggressive for normal road driving?   I have a LSD that I put in my 71 cuda when I restored it, with amazing smooth , quite yet effective results. Different style LSD but that ones a joy to drive. maybe expecting too much from this R200?
    • Matt Z
      SAU NSW - Archies Flame Grille Meet & Cruise to Kurnell

      By Matt Z · Posted

      Join SAU NSW for a flame-grilled feed & flame-spitting cruise! Sunday 17th August 2025 3:30PM Meeting Archies Flame Grille Sylvania Waters 4:45PM Cruise Departure 5:15PM Arrival at Cape Solander Kurnell Meet Location: Archies Flame Grille Final Destination: Cape Solander Kurnell *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
×
×
  • Create New...