Jump to content
SAU Community

Recommended Posts

Hi guys

Has anyone noticed that on the stock R34 GTR rear muffler the right tip is almost not been used? Firstly there is almost no black exhaust deposit, and secondly, after a drive that right one is is only warm, while you can't touch the left one without getting burned.

r34gtrtipsb.thumb.jpg.d85dfcc167a16b3059e1bbbe26ede02c.jpg

Is there maybe a spring loaded flap in the box that only opens up the right section at a certain amount of counter pressure? Or what is the reason for that?

Link to comment
https://www.sau.com.au/forums/topic/484856-r34-gtr-stock-rear-muffler-insights/
Share on other sites

9 hours ago, silencium said:

Hi guys

Has anyone noticed that on the stock R34 GTR rear muffler the right tip is almost not been used? Firstly there is almost no black exhaust deposit, and secondly, after a drive that right one is is only warm, while you can't touch the left one without getting burned.

r34gtrtipsb.thumb.jpg.d85dfcc167a16b3059e1bbbe26ede02c.jpg

Is there maybe a spring loaded flap in the box that only opens up the right section at a certain amount of counter pressure? Or what is the reason for that?

There is a spring-loaded flap that only runs it at high enough flow rates. Nissan did this to reduce noise at low load/RPM while reducing backpressure at higher flow rates. 

23 hours ago, Duncan said:

You may well be the only person in the world still choking an R34 GTR with a standard exhaust!

It's not quite like that  ;) I've put that backbox on my daily S13. Got sick of the drone all aftermarket mufflers give, what is a problem of their design, because all of them are absorption type mufflers, and these just don't work for low frequencies. So that stock resonator type muffler (all oem mufflers are resonators) that is designed to work for a 300hp engine is the perfect solution for my daily. Also MOT is very strict in my country, so as a bonus its says "Nissan Calsonic" on the box  ;D

P_20230804_001617.jpg

  • Like 1
On 8/13/2023 at 2:04 PM, silencium said:

Thanks for your enlightenment. That's what I though and what makes sense  :)  Would you know of a picture or a diagram of that System by any chance?

Not sure there's any great pictures online, if you stick an inspection camera down the muffler you'll probably see it.

57 minutes ago, silencium said:

It's not quite like that  ;) I've put that backbox on my daily S13. Got sick of the drone all aftermarket mufflers give, what is a problem of their design, because all of them are absorption type mufflers, and these just don't work for low frequencies. So that stock resonator type muffler (all oem mufflers are resonators) that is designed to work for a 300hp engine is the perfect solution for my daily. Also MOT is very strict in my country, so as a bonus its says "Nissan Calsonic" on the box  ;D

P_20230804_001617.jpg

In that case, you just quadrupled your car's value :rofl:

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

    • A few small updates since the previous post and lessons. I decided to do a little interior light upgrade on the 110. I quite like the iilumo items, even if they're a bit of a premium over other brands. You'll also note the Stedi Fogs, that will go into the S15 fog lights as I needed to match the bulbs since I got the new ones earlier. I hope they fit as the body is quite a bit longer than your normal bulb.  Annoyingly, I managed to trip the fuse, which normally wouldn't be an issue until I located the fuse. I can't say I've ever come across this. I had lucked out that someone nearby had a spare, but oddly enough Toyota dealerships seem to keep this in stock. I ordered some to keep in my stash and as luck would have it, someone else nearby tripped the same fuse so I passed on the favour.  I also did a little service on the 110 ahead of some additional work coming up. It's been annoying that Goleby's stopped carrying this particular HKS filter for the 110, so now I need to keep them on order from Japan. I also took the opportunity to install a bash plate and number plate riser. The plate riser is such a cheap but nice fix to help really tidy up the car. I'm tempted to now also replace my headlights, on this car. Both items were from Project Aero.    I also needed to replace the rear tyres on the 110, and after trying to get it aligned learnt that I need to replace some bushes in the front end, so that's next.  Closing out this update with a nicer picture as always! 
    • Yeah mate, never miss it.
    • Any going to watch World Time Attack at SMSP this year?
    • Appreciate the correction on the "ground", that will make a huge difference to looking at this. That makes complete sense about AF70/AF71 which is what I had come down to being the issue, one of these. I'll have another look in the ignition wiring when I get a chance next week. I'll also make up a jumper wire for running that AF73 test.  ECU is fine, relay itself is fine, pump harness is fine and the pump itself is fine. I am going to upgrade the Walbro 255 anyway with a DW300 I have since I need to replace the fuel sender and I'm going to upgrade the FPR with my chasebays kit ready for new plenum/injectors/dbw, but I'll get this working first. That's why this is so frustrating. 
×
×
  • Create New...