Dump Pipes

[Pal]

any pics steve.

[Tough R34]

its heavier and feels 10 times more solid.

it probly is better to spend a little extra for quality.... especially with turbo's, the smallest thing can F##K something up.

[Evil]

thats the same as mine... i got a blitz front pipe for my car... cost about $300 from memory from autobarn of all places... this is the only pic i could find...

Edited December 1, 2008 by Evil

[FOOLBOOST]

CES have a well made split dump front which is eqivalent to the HKS, blitz etc and they are local in Australia.

I have there system on my r33 gtst, very fast spool and no boost spike, expensive but well worth it as quality is second to none!

http://www.cesracing.com.au/Products/

also see here for pics http://www.cesracing.com.au/images/NISSAN%20RANGE.JPG

Edited December 2, 2008 by FOOLBOOST

[Pal]

do you have a stock turbo fullboost?

[DYNAMITE]

I have one of these too

Edited December 2, 2008 by DYNAMITE

[FOOLBOOST]

Yes well kind of, its an R33 series 2 the one with the black plastic front wheel, got me 220rkw, which is now up for sale (http://www.skylinesaustralia.com/forums/R33-Series-2-Turbo-Mani-t247362.html) as i have upgraded to an HKS gt2540 and hoping for around 260rkw, which will bolt up to the CES split dump front, with the aid of a grinder to remove the half moon divider , as the hks turbos already have the divider inbuilt in the rear of the turbo housing, see attached pic...

I think the biggest problem with the chinese made "items" is that they dont make the flanges thick enuff to handle the actual weight of the dump front so they tend to crack and brake once fitted to the car, this is very obvious when comparing them to the HKS or Blitz ones which have very thick flanges and hence are much better items and in turn will last much longer

The boost spiking issue is also due to the position at which the separate wastegate pipe is plumbed back in, good dump front pipes or dump pipes use a very long separate pipe which plumbs back in much further down the pipe for example the trust dump pipes for gtr.

Edited December 2, 2008 by FOOLBOOST

[FOOLBOOST]

These are the trust ones

[Pal]

you got a idea of the size of your waste gate hole on your HKS fullboost? i managed to get my high flow out to 28mm (originally 24 mm), hopefully that is enough, will find out tomorrow after i finished putting it back together.

Edited December 3, 2008 by Pal

[Pal]

you got a idea of the size of your waste gate hole on your HKS fullboost? i managed to get my high flow out to 28mm (originally 24 mm), hopefully that is enough, will find out tomorrow after i finished putting it back together.

didn't work, still boost creeping to 17 psi, just takes a little higher in the rev range to get there , run outta ideas to stop it except now to put bigger injectors in so it can run what it wants. bitch

[gotRICE?]

The boost spiking issue is also due to the position at which the separate wastegate pipe is plumbed back in, good dump front pipes or dump pipes use a very long separate pipe which plumbs back in much further down the pipe for example the trust dump pipes for gtr.

But the JJR ones have a very long split pipe? And the HKS one pictured above does not..

And for reference for Tough R34 here is my HKS front pipe. Not stainless.. mild steel are expensive enough

[FOOLBOOST]

Yes well the hks dump pipe has to fit into your stock exhaust system and is made to bolt up to your front pipe so it cant have a longer separate pipe, its not just the length but the position at which it plums back in which will also affect the way exhaust gases are removed from the system and in turn you want an exhaust that has the least amount of turbulence possible i.e exhaust gases going separate ways so they dont disrupt the rest of the exhaust flow and which is why plumbing the separate wastegate pipe further down the system does help this but in turn leads to boost spiking issues...

Edited December 4, 2008 by FOOLBOOST

[Tough R34]

Gotrice: how much was the front pipe, i would like one of those even if its not stainless

Pal: id go bigger injectors!! why slow the turbo down of its boost, get inectors all the way

[blags]

i would love to know who sells the HKS dump and front pipes off the shelf in Vic but it doesnt seem like many places keep them in stock.

Anyone know?

Im personally going for quality products rather than cheap copies....

[FOOLBOOST]

i would love to know who sells the HKS dump and front pipes off the shelf in Vic but it doesnt seem like many places keep them in stock.

Anyone know?

Im personally going for quality products rather than cheap copies....

Hmm yes go the hks, the cheap dumps actually have cost a few people there engines as the wastegate hole in the dump pipe didnt line up with the wastegate and hence in turn the wastegate couldnt open all the way, causing higher boost levels then anticipated.

Its gonna be hard to get the hks dumps at a good price from japan as the dollar is down the creek atm , so local in stock will be your best option,

try japanese import spares they are in SA thought they might have some 2nd hand ones or new ones, i can check them out if you require

http://www.japaneseimportspares.com.au/home/

[Az_StrYdeR]

I've got one of the BOS/BATMBL split-dump/front pipes, and havent had any problems with boost creep. The split is coming back in after the bend, which I believe creates less turbulance. I dont know about others though.

[stenve]

http://www.japaneseimportspares.com.au/itemdetails/1826

the bottom item in that pic, is it for an rb? it looks like it is but cant read the tag, looks like it would be a good option.

i myself ahd the jjr split dump, and have boostspike and fitting issues,

have purchased a hks style front pipe from gktech with has the flex in it and will be using the stock dump with it on the standard turbo. then when i upgrade the turbo i can get a better style hks or something with that.

[FOOLBOOST]

I've got one of the BOS/BATMBL split-dump/front pipes, and havent had any problems with boost creep. The split is coming back in after the bend, which I believe creates less turbulance. I dont know about others though.

Is yours a bell mouth/ half moon or full circular divider??

[blags]

Hmm yes go the hks, the cheap dumps actually have cost a few people there engines as the wastegate hole in the dump pipe didnt line up with the wastegate and hence in turn the wastegate couldnt open all the way, causing higher boost levels then anticipated.

Its gonna be hard to get the hks dumps at a good price from japan as the dollar is down the creek atm , so local in stock will be your best option,

try japanese import spares they are in SA thought they might have some 2nd hand ones or new ones, i can check them out if you require

http://www.japaneseimportspares.com.au/home/

I would love to know the price of them but i can't find many places that even list a price online. It would be good to find a place in Vic that has them in stock but i doubt anyone does.

[Az_StrYdeR]

Is yours a bell mouth/ half moon or full circular divider??

sorry, full circular divider?? Its a full split dump, so two pipes, which use a half inset moon on either side devider.... did that make any sense at all??? LOL

Mine is the same as this except in stainless:

http://img.photobucket.com/albums/v218/madwob/IMG_1436.jpg

It's coming off the car next week and is for sale (reason is getting bigger turbo, and dont want issues with the waste gate hitting the split pipe, it's perfect for standard turbo though)

Edited December 5, 2008 by Az_StrYdeR