How Much Will Stock Gtr Dump Pipes Flow?

[6InlineTT]

So I am havingbserious trouble fitting aftermarket split dump pipes to my rb26.

long story short, the front dump elbow doesnt clear the rear turbo inlet pipe.

so, I have noticed people saying that the stock,dumps flow well and alot of people saying they are shite. Now my theory is that they will flow alot more than people think.

Yes they dont look pretty inside but they made a healthy 312awkw for me with a 3inch exhaust.

I am currently puttingnmy new setup together.

hks 2540s

ARC intercooler 70mm

hks super dragger 3.5inch exhaust.

e85

now rather than spending $500-800 on dump pipes I may not need. Can anybody vouch them? I am looking to make 370awkw maybe more but im not fussed on a number. Just want to enjoy the car.

so has anyone made 370awkw or close on stock dumps.?

Cheers

Blake

Ps. I trawled threads but didnt find anything conclusive enough to make the D

[Piggaz]

Splits are junk. Buy some HPI pipes (biggest on the market) and get some front pipes to match.

[Hadouken]

I made 340.

[Piggaz]

Also, sell the 2540's off. They are the worst low mount gtr turbo setup.

[Piggaz]

I made 412. Doesn't mean they're any good.

[wolverine]

You should change the stock dump pipes.

Then you change them back like everybody else.

Same goes for the HKS 2540 turbos.

[SiR_RB]

HPI dumps are the biggest I think at around 76mm

If your doing all those mods you would be crazy to leave em

[6InlineTT]

yeah Im aware of the hks 2540s being mismatched etc. But honestly I dont mind the lag at all.

so Piggaz, you say u made 412awkw on stock dumps?

76mm seems prettt excessive for 1.3L of airflow. I would almost say you would lose velocity with pipes that large at my power level.

my 400+rwkw xr6turbo is only running a single 75mmmm dump with internal gate.

basically after lunching my xr6ts gearbox im low on cash and am hoping to get away without spending too much on extra stuff like dumps.

at the moment I cant see enough evidence to suggest that I need afternarket dumps. but thanks for the input. keep it coming

[6InlineTT]

also have hks front pipes..

[gtr jet]

I take it you have R34 dumps? If that's the case just leave them. If it's the older style you have then you might be better off spending the coin on better ones.

[Piggaz]

yeah Im aware of the hks 2540s being mismatched etc. But honestly I dont mind the lag at all.

so Piggaz, you say u made 412awkw on stock dumps?

76mm seems prettt excessive for 1.3L of airflow. I would almost say you would lose velocity with pipes that large at my power level.

my 400+rwkw xr6turbo is only running a single 75mmmm dump with internal gate.

basically after lunching my xr6ts gearbox im low on cash and am hoping to get away without spending too much on extra stuff like dumps.

at the moment I cant see enough evidence to suggest that I need afternarket dumps. but thanks for the input. keep it coming

412 on split dumps.

Dumps are not expensive, a set of HPI units and job done.

[krzysztof]

R33 dump pipes are different to R34 ??

[iwanta34gtr]

34 GTR dumps are stainless.

I have a set removed from low KM vspec II nur if anyone is keen, PM me.

Cheers.

[sime1]

Paul how is things bit late but the weapon is done lil bit hard to drive at first but then you get use to it. I can take you for a wrap tomorrow I bring it out if weather is ok and Fri night???

[XKLABA]

Depends on what factory dump pipes you have, they are all different and the 32 ones will struggle to flow 370kw, the 33 and 34 ones will be a restriction at that power aswell just not as much as the 32 ones, that said you can blow a golf ball through a length of garden hose if you blow hard enough

[6InlineTT]

Well the reason I questioned it is that my xr6turbo flows over 400rwkw with a single internally gated gt3540 and a 3.5inch dump. That's 4L single with a single 3.5inch dump vs 2.6L at similar power with twin 3inch dumps? That just seems a little excessive to me.

I have hks mid pipes and hks 3.5catback so I am going to spend the money elsewhere and post my results. After all, I'm not chasing every last Kw and it's more money for things like oil separators and things I'll need later.

Thanks for the inputs

Blake

[6InlineTT]

If only I was rich..