3" dump pipe

Post by **TOMSUN** » Fri Aug 19, 2005 9:17 am

I had a go at making a 3" dump pipe...
Really had to belt the crap out of the 3" pipe to make it fit the flange...

Flange is to suit a RB25 Series 1 Ball Bearing Turbo... :D
Should be interesting...

Post by **Alspos** » Fri Aug 19, 2005 10:25 am

Nice speed ripples in the top there........
Bit a bog will fix that right up :D

Good work though, it's a bitch to get pipe to fit weird shapes like that....

toysrus · Post by **toysrus** » Fri Aug 19, 2005 10:35 am

Pretty good effort their mate :beer

Get some panel beating tools and flaten thise ripples out if you can or grab the oxy/acteyl and massage it smooth, not with your hands ofcourse LOL

Post by **TOMSUN** » Fri Aug 19, 2005 11:27 am

The dents look worse than they are. They are only about 1mm and they won't effect the flow at all.

When looking at the flange the RHS is the exhaust wheel and the LHS is for the flapper of the waste gate...

Just need to linish the face of the flange and Mig around the black of the flange to the pipe for strength.

Fuel · Post by **Fuel** » Fri Aug 19, 2005 1:00 pm

TOMSUN wrote:0 rwkw @ 0 psi , 0 sec @ 0 mph 1/4 mile

Surely you could push the starion to get a faster 1/4 time than that. :)

Are you sure that turbo is ball bearing?

Post by **TOMSUN** » Fri Aug 19, 2005 2:04 pm

:)
"0 rwkw @ 0 psi , 0 sec @ 0 mph 1/4 mile" ... I can't wait to fill in the blanks. :D

Yes, I'm sure it is a ball bearing turbo... Should spool up nicely...
That is why no one repairs them... But you can get them high flowed..

Why do you ask?

ProZac · Post by **ProZac** » Sun Aug 21, 2005 9:40 pm

Looks the goods for sure. Its always much more satisfying to use something like that you've made yourself. GW d00der. :).

SpidersWeb · Post by **SpidersWeb** » Sun Aug 21, 2005 10:13 pm

I thought the earlier RB2x series turbo engines, had a ceramic shaft, not ball bearing, so they spool up quickly, but if you give them too much, the shaft tends to break/wheels fall off.

Its common for Skyline's here to have the shaft changed to metal, and larger wheels fitted. With the R33 and R32 skyline's and Cefiros, they are rebuldable and ceramic.

I could be wrong, but thats what I've heard and seen on the High Octane video thing when they did up their GT-R.

Nevertheless, good work on that dump pipe :D

Post by **TOMSUN** » Mon Aug 22, 2005 9:45 am

I have been told the exhaust wheel that is ceramic and if they are constantly on high boost (over 1bar or 15 psi) they will spit the ceramic exhaust wheel off the shaft.

I have also been told the turbos can be modified but cores are not rebuildabe as it is not cost effective to do so... (I could be wrong)

I have been told the exhaust housing off the 300ZX (single turbo not twin turbo) can be matched up with the compressor side of the RB25 turbo and hight flowed to creat a weapon turbo. The 300ZX single turbo has a steel exhaust wheel so it is tougher and the housing will flow more and make bigger power at the top end.

CussCuss · Post by **CussCuss** » Mon Aug 22, 2005 2:42 pm

tomsun is right, r32 and r33 s1 bb turbos have a ceramic exhaust wheel and bb core, very light, very early spool up, the r33 one is slightly bigger. the single turbo 300zx is larger and has a steel exhaust wheel but non bb. r33s2 and onwards use a plastic exhaust wheel (i kid you not) and have to be boosted more from stock to make the same power.
Im not fussed about the fact that i cant push it past 1 bar as i dont think thats a good idea on my stock engine anyway, so thats why i got it.

Post by **TOMSUN** » Mon Aug 22, 2005 2:47 pm

CussCuss...

Just correcting a typo...
R33 Series 2 turbos have plastic "compressor" wheel.

It is easy to spot as it is a black plastic not silver.

SpidersWeb · Post by **SpidersWeb** » Mon Aug 22, 2005 5:05 pm

ahh it was the wheel that was cermaic, not the shaft!

My bad

greenstaz82 · Post by **greenstaz82** » Tue Sep 06, 2005 6:59 pm

good effort , i done a 2inch or 2.5 pipe onto some fucked up shape like that turned out ok , i might post some pics up later if this post is still active .

igottasicjb · Post by **igottasicjb** » Wed Sep 07, 2005 10:12 pm

sorry to spoil anyones day but standard skyline turbo's are not ball bearing turbo's they are still the good old floating shaft (sleeve) type. the only thing they have done is get rid of the sleeve and made 2 very narrow outer bearing race's (were the oil pressure is fed too) which are pressed into the bearing housing . However they are rebuildable as i had a s1 r33 on mine which i thought was still ceremic and often wondered by it had a dymanic turbo rebuild badge on it. so pulled it apart to not only find out it is a sleeve bearing setup but it had been steel wheeled and high flowed. not happy as i recently bought a gt2871rs job so i could run big boost thinking a skyline one still ceremic and would shit itself.

series 2 is the same the just made them cheaper with the adittion of a shitty plastic compressor wheel, i know as my friend drove his 33 at xmas time with no filter and its amazing how much damage a xmas beetle really does.

but still if you can find one and rebuild it they are good for around 300-350hp worth of air

Post by **TOMSUN** » Fri Sep 16, 2005 9:05 am

igottasicjb

PLEASE GET YOUR FACTS RIGHT...
The turbo that you had that was rebuild, could have need rebuilt with a different core.

http://www.gcg.com.au/Catalogue_Menus/U ... e_gtst.htm

XTRGTST-S1
The factory Turbocharger on a Nissan Skyline R32/33 GTS-T is a Ball Bearing, T3 sized unit, with a ceramic turbine wheel. In upgrading this unit, GCG replace the ball bearing pack with a new one, while replacing the Turbine wheel and Compressor wheel with larger steel wheels, making the Turbocharger Hi-Flowed. The upgrade Turbocharger bolts directly back on the manifold with no modifications required, using the factory oil and water lines. After the Upgrade, the Turbocharger is rated 450hp.
Turnaround: 2-3 days.
Price: $1950.00

Austarion

3" dump pipe

3" dump pipe

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