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R34 Gtr Cat Back Bolt Up To R34 Gtt

RusH_

By RusH_,
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  • 4 weeks later...
  • 3 months later...
RusH_ Veteran

RusH_

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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

RusH_ Veteran

RusH_

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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

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
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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_ Veteran

RusH_

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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)

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted
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.

RusH_ Veteran

RusH_

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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

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted
: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!!

RusH_ Veteran

RusH_

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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 :)

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted
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?

RusH_ Veteran

RusH_

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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

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted
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?

RusH_ Veteran

RusH_

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^^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

jrm Veteran

jrm

Posted
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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.

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