Jump to content
SAU Community

Recommended Posts

  • 4 weeks later...
  • 3 months later...

Well after a long wait, and a lot of patience i finally took the plunge and attempted to fit a 34 GTR exhaust (Impul) with stock GTR cat to my GTT split dump/front pipe from JJR.

Several hours and a broken turbo stud later and its on, but...

I can now confirm that a gtr catback (at least the one i bought) does NOT bolt up to a gtt, it is infact too long! its about 3/4's the length of the cat too long, so about 8-10inches

So now as it sits, i have my JJR 3" front/dump, mated up to the mid section of the cat back, minus the cat, with about a 8-10inch piece of custom pipe to make up the difference in length, which then joins to the end pipes/muffler

Further more, when i get a new cat, the system will no doubt need a little chopping and changing to accomodate the size, assuming its longer than what is already there.

So no, a gtr catback will not bolt up to a gtt without a little customization.

Big thanks to all the guys at Al's Race fab and mechanical, worked tirelessly through the night to get me back on the road

the hangars were ok, a little tight toward the back of the end pipe,

The Impul gtr exhaust sat perfectly in the centre of the cut out section in the rear bar, nicely tucked up under the car.

The stock gtr cat would bolt up to the 3" dump/front pipe i got from JJR, but i dont know how it would go with a stock gtt cat, im not sure if the flanges would be on the same angles

RusH, you know you could have just bought a R34 GTT exhaust system... :D

Straight bolt on fit and I am sure IMPUL make one if not other Japanese brands make exhaust for the R34 GTT.

RusH, you know you could have just bought a R34 GTT exhaust system... :ermm:

Straight bolt on fit and I am sure IMPUL make one if not other Japanese brands make exhaust for the R34 GTT.

i spent $550 on a full 3" turbo back system... im fine with the customized way :), jumped on a good opportunity when it presented itself and got the full system at a great price (installed for free as a bit of a trade off)

i spent $550 on a full 3" turbo back system... im fine with the customized way :), jumped on a good opportunity when it presented itself and got the full system at a great price (installed for free as a bit of a trade off)

I see...

That sir, is a great deal! :)

Well as long as it worked out fine it's all good.

I see...

That sir, is a great deal! :D

Well as long as it worked out fine it's all good.

:D sure is

Will be getting the mid muffler removed shortly to increase the noise and putting in a metal cat as well

:D sure is

Will be getting the mid muffler removed shortly to increase the noise and putting in a metal cat as well

You want more noise..?

Brisbane must be pretty lenient...

Haha!!

You want more noise..?

Brisbane must be pretty lenient...

Haha!!

well i have to say, with the oval tip muffler and the mid muffler, the exhaust is not much louder than stock, it would be great for a stealth application, but id like a little more of that RB growl :)

well i have to say, with the oval tip muffler and the mid muffler, the exhaust is not much louder than stock, it would be great for a stealth application, but id like a little more of that RB growl :)

Yeah true, I too just bough a Veilside Oval shape muffler (Cat back) and before it was on a R32 GTR, heavily modified and it sounded quite, so it should sound similar to my stock cat back, but just a tad louder.

BTW, GTR exhaust's have twin out lets into one - molds into the front pipe.

So what did you have to do to make it fit? Block off one of the inlets on the exhaust? Cut it off? Block it off?

Yeah true, I too just bough a Veilside Oval shape muffler (Cat back) and before it was on a R32 GTR, heavily modified and it sounded quite, so it should sound similar to my stock cat back, but just a tad louder.

BTW, GTR exhaust's have twin out lets into one - molds into the front pipe.

So what did you have to do to make it fit? Block off one of the inlets on the exhaust? Cut it off? Block it off?

Well mine is a cat back, so its only a single pipe from the cat section back, so it was just a matter of lining it up and bolting it in, a new piece of pipe was used to make up the extra 8-10inches after removing the cat.

That is all mated up to the GTT bellmouth dump/front pipe

i spent $550 on a full 3" turbo back system... im fine with the customized way :(, jumped on a good opportunity when it presented itself and got the full system at a great price (installed for free as a bit of a trade off)
Well mine is a cat back, so its only a single pipe from the cat section back, so it was just a matter of lining it up and bolting it in, a new piece of pipe was used to make up the extra 8-10inches after removing the cat.

That is all mated up to the GTT bellmouth dump/front pipe

So did you buy a full exhaust or just a cat back... :P

I can see a pic in your avatar, got any more?

^^Looks great RusH!

The fitting looks nice and neat too.

Good exhaust flow for sure.

Thanks dude,

Its tucked in pretty good, and has decent clearance, so it shouldnt cause problems when i get some coilovers on, and it doesnt rattle or move about either, so all in all im pretty happy :P

Wonder how well an R34 GTR exhaust would go on an R34 GT-T sedan then, if it's too long for the coupe.... There's an R34 GTR cat-back exhaust I'm eyeing off at the moment - but I don't want to go to too much effort modifying it to fit.

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

    • Here is the mess that I made. That filler there was successful in filling dents in that area. But in the middle area. I can feel dents. And I've gone ocer it multiple times with filler. And the filler is no longer there because i accidently sanded it away. I've chased my tail on this job but this is something else lol. So I'm gonna attempt filler one more time and if it doesn't work I'll just high fill primer the door and see where the issues are because guidecoat is of no use atm.
    • Ok, so I think I sort of figured out where I went wrong. So I definitely overthinked it, and I over sanded, which is probably a large part of the problem. to fix it, I ended up tapping some spots that were likely to be high, made them low, filled them in, and I tackled small sections at a time, and it feels a lot better.    I think what confused me as well is you have the bare metal, and some spots darker and some are lighter, and when I run my finger across it, it' would feel like it's a low spot, but I think it's just a transition in different texture from metal to body filler.    When your finger's sliding on the body filler, and crosses over to the bare metal, going back and forth, it feels like it's a low spot. So I kept putting filler there and sanding, but I think it was just a transition in texture, nothing to do with the low or high spot. But the panel's feels a lot better, and I'm just going to end up priming it, and then I'll block it after with guide coat.   Ended up wasting just about all of my filler on this damn door lol  
    • -10 is plenty for running to an oil cooler. When you look at oil feeds, like power steering feeds, they're much smaller, and then just a larger hose size to move volume in less pressure. No need for -12. Even on the race cars, like Duncans, and endurance cars, most of them are all running -10 and everything works perfectly fine, temps are under control, and there's no restrictions.
    • Update: O2 sensor in my downpipe turned out to be faulty when I plugged in to the Haltech software. Was getting a "open circuit" warning. Tons of carbon buildup on it, probably from when I was running rich for a while before getting it corrected. Replaced with new unit and test drove again. The shuffle still happens, albeit far less now. I am not able to replicate it as reliably and it no longer happens at the same RPM levels as before. The only time I was able to hear it was in 5th going uphill and another time in 5th where there was no noticeable incline but applying more throttle first sped it up and then cleared it. Then once in 4th when I slightly lifted the throttle going over a bump but cleared right after. My understanding is that with the O2 sensor out, the ECU relies entirely on the MAP tune and isn't able to make its small adjustments based on the sensors reading. All in all, a big improvement, though not the silver bullet. Will try validating the actuators are set up correctly, and potentially setting up shop time to tune the boost controller on closed loop rather than the open loop it is set to now. Think if it's set up on closed loop to take the O2 reading, that should deal with these last bits. Will try to update again as I go. 
    • More so GReddy oil relocation kits, sandwich plates, etc. all use 10AN fittings. And same, I've only used 10AN and my car sees track work (circuit, doing laps, not 10 sec squirt business).
×
×
  • Create New...