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[Tourer_V]

Hey guys, i just thort id post up a few pics of the dump pipes ive bought for my jzx90 for when it arrives.

i bought these dumps on EBAY for a very reasonable price so thort yall might wanna check it out, if you do go to have a look, in the search box put in " 1JZ* " and it will show ya.

(IMG:http://www.jzx100.com/forum/style_emoticons/default/claps.gif)

[Michael Banazis]

Hey guys, i just thort id post up a few pics of the dump pipes ive bought for my jzx90 for when it arrives.

i bought these dumps on EBAY for a very reasonable price so thort yall might wanna check it out, if you do go to have a look, in the search box put in " 1JZ* " and it will show ya.

(IMG:http://www.jzx100.com/forum/style_emoticons/default/claps.gif)

I'm not sure if these are the same ones but i read a thread on soarer central that the stainless they were made out of was too thin and that they would crack pretty quickly. Mind you, there is a bit of one-eyed-ness about certain products on those forums (never having bought products from their preferred shops i can't comment if it's justified or not).

They do look nice though- how much did they cost you?

[Tourer_V]

I'm not sure if these are the same ones but i read a thread on soarer central that the stainless they were made out of was too thin and that they would crack pretty quickly. Mind you, there is a bit of one-eyed-ness about certain products on those forums (never having bought products from their preferred shops i can't comment if it's justified or not).

They do look nice though- how much did they cost you?

i payed 400 buks for them, theyre only to keep me goin till i got enuf $$$ for the big single upgrade (IMG:http://www.jzx100.com/forum/style_emoticons/default/bleh.gif) bah who cares what the "soarer" club recons, i mean err who would drive a soarer? there bloddy hidious!! got the JZX!!

[Michael Banazis]

Do you know what thickness of stainless they're made out of? My plans don't involve changing the twins (other than putting steel wheels in 'em) so these dumps could def be a goer for me as they're ~$300 cheaper than "other" places sell them for...

[Tourer_V]

Do you know what thickness of stainless they're made out of? My plans don't involve changing the twins (other than putting steel wheels in 'em) so these dumps could def be a goer for me as they're ~$300 cheaper than "other" places sell them for...

hey bru, just had a quick squiz at the dumps and without a pair of vernier's or the like im goin by the trusty old..... o.O being me eyes (IMG:http://www.jzx100.com/forum/style_emoticons/default/bleh.gif) haha im guessin that they are roughly made of 2mm 304 grade stainless.

This post has been edited by Tourer_V: Jul 31 2006, 08:08 PM

[ghost]

Bear in mind that grade 304 stainless is not the best suited material for exhaust manifolds or piping. It is used simply because it is cheaper.
eg.

Continuous use of 304 in the 425-860°C range is not recommended if subsequent aqueous corrosion resistance is important.
Typical applications include:
· Food processing equipment, particularly in beer brewing, milk processing & wine making.
· Kitchen benches, sinks, troughs, equipment and appliances
· Architectural panelling, railings & trim
· Chemical containers, including for transport
· Heat Exchangers
· Woven or welded screens for mining, quarrying & water filtration
· Threaded fasteners
· Springs

Another commonly used grade is 316 which has similar characteristics.

The better choice is grade 321 which is more expensive mostly because of the addition of titanium as a stabiliser. Compare the specs and uses:

These grades perform well in the 425-900°C range, and particularly where subsequent aqueous corrosive conditions are present. 321H has higher hot strength, and is particularly suitable for high temperature structural applications.

Typical applications include:
· Aircraft exhaust manifolds
· Expansion joints
· Bellows
· Furnace parts
· Heating element tubing
· Heat Exchangers
· Woven or welded screens for high temperature mineral processing
· Spiral Welded tube for burner pipes and flues

I like my beer, but I want my exhaust manifold made out of something stronger than a breweries tube.
Note your exhaust will generally operate in the 400-700 degrees C range with the occasional trip up into the 900's when the car is pushed hard. This is a tough environment for any material and cheap stuff will fail before too long.

[Lew Radbourn]

tourerV;
i mean err who would drive a soarer? there bloddy hidious;
hahahahaha
good on ya mate..
i do drive a soarer...
the dump pipes on ebay will last a little while
the stainless is very thin and the grading is wrong for that area of the exhaust system.
stainless up that close to the turbos is going to eventualy cause you massive head aches.
for the price of the china ones available,thay could be a good thing for a short period until you up grade to a single in the future.
so for the price thay arn't bad at all.
if you had to make dumps out of stainless i would go for 409 stainless
it is an exhaust grade stainless that will allow flex
i have contacted china about this before and thay will not make them
so i have had them make 321 stainless ones before for the soarers
and thay didn't fit
so i modded them and sent them back so now every body can get them to fit jzz30 as well as jza70 and jzx90.
i have made a set for brendan's jzx90
fitted them up but i was not totaly happy with the fitment
so i am right now making him another set.
mild steel set
at least that will allow some flex with out cracking.

[FRpilot]

bare in mind, regardless of ebay or not dumps.. u should be careful with what gaskets and bolts used

[Tourer_V]

hha my bad mate i didnt know we had any soarer driving people on this forum, the thread was opened quite some time ago, i do plan on going to a large single soon so back when i got the dumps they were fine for the time being.

[ITSTOK]

What about these? 321 Stainless?

http://cgi.ebay.com/ebaymotors/Downpipe-Y-...116940932QQrdZ1

[Hyaku90]

i've been advised by many that the standard dump pipes are actually made well for the 1JZ.. and like you.. with a big single conversion on the cards.. it was recommended to simply make do with the standard ones.. another option perhaps?

[ghost]

That dump on ebay looks the goods, and reasonable value. Probably not as clean flowing as some locally made items but certainly better than standard and they are 321 grade so are the best choice materially.
As for the standard dump you need to keep in mind they were made for ease and cheapness of manufacture not for best performance. They are relatively restrictive and significant gains can be had by replacing them with free flowing dumps. However if you keep a standard exhaust, you may not notice much gain until it is replaced. You need to think holistically. Each little change will provide small gains but complimentary modifications will multiply those gains significantly.
Eg changing the dumps, cat, exhaust and putting in a free flowing intake will net the greatest gains and more than the sum of the individual gains.

[Tourer_V]

Ghost is spot on, ive actually not installed my twin dumps and front pipe as removing the turbo's to install it is a waste of time when ill just have to pull them off again later, instead ive just used a 3' front pipe that uses the factory dump.

What about these? 321 Stainless?

http://cgi.ebay.com/ebaymotors/Downpipe-Y-...116940932QQrdZ1

HOLD UP!!! thats the same as myne!! EXACTLY!! in that case my dumps must be 321 then..... ya can buy them from aussie ebay

[ITSTOK]

Ghost is spot on, ive actually not installed my twin dumps and front pipe as removing the turbo's to install it is a waste of time when ill just have to pull them off again later, instead ive just used a 3' front pipe that uses the factory dump.
HOLD UP!!! thats the same as myne!! EXACTLY!! in that case my dumps must be 321 then..... ya can buy them from aussie ebay

Ah Ghost and Tourer_V...my constant suppliers of JZX wisdom... (IMG:http://www.jzx100.com/forum/style_emoticons/default/biggrin.gif)

I just bought a JZX90 and want to see well over 200kW in stock turbo form...will these dumps handle it?

I noticed the Soarer guys used those Marlew dump pipes which look trick, but at $770 I'd rather save those pennies and fit the GT35r & Tial gate I have sitting in my cupboard.

Will these ebay dumps, free flowing zorst, FMIC, Greddy E-Manage and added boost = anywhere near 250kW? The Sin City Soarer did something similar...but I don't want to run 17.5psi or cams/gears...

Any real world opinions on these dumps? They look good enough for these figures...

[ghost]

There is some contention about the Sin City Soarer actually getting 250kw and how it was managed, but there is strong evidence from many others to back up a realistic 220kw at the wheels. This dump should have no problem supporting that figure in conjunction with associated mods and a good tune.

[ITSTOK]

There is some contention about the Sin City Soarer actually getting 250kw and how it was managed, but there is strong evidence from many others to back up a realistic 220kw at the wheels. This dump should have no problem supporting that figure in conjunction with associated mods and a good tune.

I'm with you on this one Ghost - in fact I am sceptical on alot of magazine's cars and the way they are configured.

That said...if we got one of these '220kW' cars you've mentioned and put HKS cams + gears plus 17.5psi boost, they might just crack the 250 mark. How long for is another matter...

I wonder how nice/grunty such a set up would be at 13psi...hmmm...we'll see. (IMG:http://www.jzx100.com/forum/style_emoticons/default/whistling.gif)

[Sonic]

i've been shopping around Adelaide, getting information and prices on the twin dump pipes and so far been quoted around the $950-$1000 mark to have a custom stainless twin setup made. i've asked to keep the pipes seperate until just before the cat and this wouldn't be a problem.
another question i've asked is the wastegate outlet.. so far all have said it doesn't really matter if the wastegates are kept seperate or included in the outlet flange as std.

not sure what to do yet...

[ITSTOK]

Well I just bought the ones I posted above in the ebay link...I'll let you know how they go... (IMG:http://www.jzx100.com/forum/style_emoticons/default/smile.gif)

[Sonic]

so you bought the ones from USA and not the AUS ones? i'd say they were made on the same welding jig as even the angles of the joins are the same. but strange that the US ones claim to be 321stainless and the AUS ones are 304stainless.

[ITSTOK]

so you bought the ones from USA and not the AUS ones? i'd say they were made on the same welding jig as even the angles of the joins are the same. but strange that the US ones claim to be 321stainless and the AUS ones are 304stainless. [img]

Sorry - I actually bought the Aus ones which are 304 stainless.
http://cgi.ebay.com.au/TOYOTA-1JZGTE-UPGRA...1QQcmdZViewItem

I initially wanted 'twin' dump pipes from Marlew Performance, however in this thread he states the 'seat of the pants feeling is the same' - so for a third of the price, I went the ebay ones.

http://soarercentral.com/sc-forum/messages...html?1178746846

I had a similar 'twin' dump pipe set up in my R32 Skyline and there was no noticeable difference between these and the single unit on a friends car - and Lew backs that up.

Hope this helps!


Chris

[Google Bot]