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Converting R33 Exhaust To R34?

34r

By 34r,
in Engines & Forced Induction

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34r Rookie

34r

Posted
Posted

Hi all. I've been trying to put on a better exhaust on my r34 GTT for a while now but it seems there are not many of them on sale.

So i was told I could purchase a r33 exhaust and reweld it to fit on r34. I was wondering how would that be done. Say I have a kakimoto N1+Rev cat back for r33 gts-t. There seems to be only one difference at the intermediate pipe near the cat.

So it is possible just to cut the part and somehow reweld it to fit to a r34? I was told by a exhaust shop that their hourly rate is $95.00 and 3in ss bends are $55.00ea. How much do you guys think the whole process is gonna cost?

Thx HEAPS!

Pics: R34: http://www.kakimotoracing.co.jp/image_N31348.html

R33: http://www.kakimotoracing.co.jp/image_N31307.html

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V28VX37 Veteran

V28VX37

Posted
Posted
Hi all. I've been trying to put on a better exhaust on my r34 GTT for a while now but it seems there are not many of them on sale.

Hey mate,

that's exactly what I thought a while back when I decided to get an 2nd hand R33 coupe cat back for my R34 sedan. Have a look at these two threads:

- Exhaust System Lengths On R34 Gtt Sedan?, Modifying R34 GTT Coupe or R33 GTSt system to suit?

- Installing Jjr Bellmouth Front/dump Pipe On R34, Who's done it, any advice or tips?

I my case the exhaust shop charged about 3 hours labour for modifying and fitting a full turbo back. I reckon a cat back only should be about half of that.

Cheers

  • 5 years later...
MikeR34GTT Collaborator

MikeR34GTT

Posted
Posted

Digging up an oldie here, but how did you go?

I'm also looking at a turboback system to replace the stock one on my 2001 GTT and have heard many people just going with an R33 turboback and getting a shop to weld/fit etc.

will this actually work/viable option?

Cassbo Grand Master

Cassbo

Posted
Posted

Digging up an oldie here, but how did you go?

I'm also looking at a turboback system to replace the stock one on my 2001 GTT and have heard many people just going with an R33 turboback and getting a shop to weld/fit etc.

will this actually work/viable option?

It does work, a mate of mine had to cut the exhaust shorter and reweld the flange to get the R33 GTS-t OEM exhaust to fit a R34 GT-t. Afaik nothing else needs to be done, most or all of the hangers line up fine
V28VX37 Veteran

V28VX37

Posted
Posted

Digging up an oldie here, but how did you go?

I'm also looking at a turboback system to replace the stock one on my 2001 GTT and have heard many people just going with an R33 turboback and getting a shop to weld/fit etc.

will this actually work/viable option?

Yeah ok, I've still got the original dump and HKS Super Drager rear muffler but everything between has been changed ... basically the R33 coupe system was originally hacked to fit my 34 sedan but I was never super happy with the way it saw, was way too low and scrapey.

I got the system redone with a new mid muffler and new piping, all tucked in property. It sits really well now and flows excellent with a Venom cat, but is really droney at ~2000rpm.

Since the car is a weekender I don't really care but given that I originally paid $250 for the 33 catback and have since spent probably 1k+ to modify and remodify it, it's not something I would recommend. Just get a reputable exhaust shop to make you a custom system, or get an entry level system like X-Force, much easier.

But perhaps if you're going 33 coupe -> 34 coupe it's easier.

  • 3 weeks later...
MikeR34GTT Collaborator

MikeR34GTT

Posted
Posted

33 to 34 needs a bit lengthened. Heaps easy

Still sitting on this one boys, but really need a system soon. My GTT sounds so.. stock ):

Reckon this would work for me based on the above: http://justjap.com/engine/exhaust/exhaust-systems/jjr/jjr-hyperflow-complete-exhaust-system-nissan-skyline-ecr33-rb25det.html

Or better to go into an exhaust shop and get their two bobs?

GTSBoy Grand Master

GTSBoy

Posted
Posted

This stuff is so easy I do not know why it keeps coming around.

Step one. Choose and buy a mid muffler and a rear muffler. Or just one of them depending on taste.

Step two. Get exhaust shop to build the pipework from scratch. 3", 3.5" or 4" to suit your needs and the mufflers you bought.

THIS IS WHAT EXHAUST SHOPS ARE FOR!!!!11!!!!1one juan. What do you think we used to do back in the 70s and 80s when we wanted a new exhaust for a car?

  • Like 3
Kinks Grand Master

Kinks

Posted
Posted

THIS IS WHAT EXHAUST SHOPS ARE FOR!!!!11!!!!1one juan. What do you think we used to do back in the 70s and 80s when we wanted a new exhaust for a car?

Don't underestimate the ability for a workshop to f**k it up though. I had a local exhaust shop in Brookvale make a catback for my R34 and it was f**king HORRIBLE. First I told him I wanted it quiet, so he fit a single straight through muffler and it was around 100dB in the cabin. 2000RPM was a HUGE drone fest. Actually it sounded pretty good north of 4000RPM but how often do you drive around up there on the street? Not much. And you gotta go through 2000RPM a lot.

Took it back and they fitted some poxy triflow muffler. A bit quieter, still droned terribly at 2000RPM (about 85dB in cabin) but from 3000+ it was quiet as a mouse even when giving it stick. Totally wrong. I don't care if it's noisy at WOT just give me something docile when I'm at light throttle

But, I agree in principle. The catback is in my garage waiting to be attacked with an angle grinder and taken to scrap metal recycler. It's so bad I wouldn't even contemplate selling it because you've have to be a complete bell end to want an exhaust that did that sort of thing.

Soon I will go to another exhaust shop and suss them out to see if they know what they're talking about before spending money.

I think the typical enthusiast would just be a wet finger in the air choosing a muffler. A real exhaust shop will have the expertise to know what works and what doesn't.

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