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JoELMaN

Oval Exhaust System

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Just get someone to modify the exhaust so it suits the car better.

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Just get someone to modify the exhaust so it suits the car better.

Depending on how much work is involved it might be easier to start fresh from nothing which is what I would prefer to do

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Couldn't be that much work in making it fit better. Got to be cheaper then fabricating a full exhaust. I'd rather not do them at all exhaust fab is crap lol

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Couldn't be that much work in making it fit better. Got to be cheaper then fabricating a full exhaust. I'd rather not do them at all exhaust fab is crap lol

 

going of what he said i reckon it would be easier to start fresh and i reckon u would get a better finish result as well

i dont mind exhaust work

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Cutting and shutting an existing exhaust would cost more than starting fresh. A sad fact of fabrication.

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Performance Exhaust in Northmead. I think he would suggest a complete new system though.

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Getting back to the oval exhaust theme, I've been thinking of this for ages, good info and theory in this thread, thanks guys. The first thing that started my interest in an oval exhaust system was the Moonface dump pipe. On my sil80 I just used 3" and bashed the floor pan up to accommodate.

Here's the Moonface dump pipe:

http://www.nengun.com/moonface/exhaust-chamber-pro

nengun-1639-02-moonface-exhaust_chamber_pro.jpg

 

It's said that even just the oval dump pipe chamber like the Moonface dump pipe gives the note a distinct sound, is this true?

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It's said that even just the oval dump pipe chamber like the Moonface dump pipe gives the note a distinct sound, is this true?

yeah it could be true

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post-2829-0-50857700-1384153158_thumb.jpg

 

^^ nice, did you do that. Who, where, what? Is that your R34? Power outputs?

Edited by HELLBOYs80

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post-2829-0-50857700-1384153158_thumb.jpg

 

^^ nice, did you do that. Who, where, what? Is that your R34? Power outputs?

nah i found that picture on the interweb its the Tien S15 RB26 circuit car

 

my R34 has a 4 inch exhaust, 600kw 30psi

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post-2829-0-50857700-1384153158_thumb.jpg

 

^^ nice, did you do that. Who, where, what? Is that your R34? Power outputs?

my R34 has a 4 inch exhaust, 600kw 30psi

 

Geez you'll jump at any opportunity to bring that up :-P

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post-2829-0-50857700-1384153158_thumb.jpg

 

^^ nice, did you do that. Who, where, what? Is that your R34? Power outputs?

my R34 has a 4 inch exhaust, 600kw 30psi

 

Geez you'll jump at any opportunity to bring that up :-P

Well he asked

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god help us when its running 50psi :lol:

Hahahaha don't think I have the balls to

Barely have the balls on 30psi

We all know what happen to my old r32

I'll wait till I've had a bit more practice driving it before the boost goes up and a decent gearbox

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Decided to go with a twin tip varex, pick it up tomorrow - $399.

 

May have went a bit overboard on hanger mounts...

 

20131112_143344_zpsb28afd03.jpg

 

20131112_141105_zpsd91f3f48.jpg

 

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May have went a bit overboard on hanger mounts...

nothing wrong with that

at least you wont have the exhaust banging against any thing

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post-2829-0-50857700-1384153158_thumb.jpg

 

^^ nice, did you do that. Who, where, what? Is that your R34? Power outputs?

my R34 has a 4 inch exhaust, 600kw 30psi

 

Geez you'll jump at any opportunity to bring that up :-P

 

 

 

Lol dyno vids ready yet?

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ill wait till the workshop does a proper edited version

workshop doesnt want me spoiling it and they have the video not me

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I'm not sure if it only the old twin tip varex had it but mine had small baffles in the tip looks to neck down to 2inch just check yours before you put it in

I just heated the tips on mine and the baffles came loose and I bent them smaller till it came out

1 tip I didn't remove the baffle cause it's the quiet side and the pipe in its smaller anyway but the other tip goes straight to the valve

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Exhaust is now finished. Went from having about 65mm ground clearance with the trust pe2 to having 135mm with the custom jobby.

Ended up making a new strap for the muffler hanger as the one supplied was stainless which I cannot weld. It didn't even really fit properly.

 

20131126_125940_zps24d31bfb.jpg

 

20131126_134525_zpscef24cec.jpg

 

20131125_185033_zpsafe78160.jpg

 

20131124_161855_zps17cb1201.jpg

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65mm clearance to 135mm is a big difference

Just goes to show how much difference there is if u make some thing on the car compared to buying some thing in a kit

Piecing an exhaust system together on the car always fits so much better

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good work on the exhaust

 

note, you can weld steel to stainless, just means its gonna rust thats all

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good work on the exhaust

 

note, you can weld steel to stainless, just means its gonna rust thats all

 

Cheers

 

Yeah I know you can but the strap supplied didn't fit real well so I thought I would start over and make it all out of mild steel.

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What about sound on all of these exhausts? 3" mild and 3" aluminium exhausts sound different so if it's that sensitive wouldn't oval shape create something different?

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What about sound on all of these exhausts? 3" mild and 3" aluminium exhausts sound different so if it's that sensitive wouldn't oval shape create something different?

Aluminium exhaust?? I don't think so.

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