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Should I go with a t3/04 turbo?


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#1 beaniam

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Posted 15 November 2013 - 05:45 PM

I positively identified the turbo the PO used in the swap on my car as a ceramic wheel r33 rb26det turbo with the stock 280zxt  7lb wastegate and some aftermarket 2.5" downpipe.  A big FMIC and 2.25" piping.  Currently I'm running 12-14psi.  At about 13psi it feels like the WG starts to open up sometimes.  I'm thinking that's due to the no name ebay manual boost controller.  I have a cable controlled Hallman MBC on the way to give that a try but I'm starting to worry about the limits of this turbo.  Is it a definite danger of exploding the ceramic wheel at 14psi?  Time to go with a t3/04 variant and 3" DP?  Engine is a stock f54/p90a.  Other details are in sig.  I have not run a 1/4 mile or dyno'd the car yet.  I did just purchase tuner studio to start running the analyze live.


76 280z, CAI, 240sx TB, 6-2-1, 2+2 flywheel/clutch, 81zx 5spd, 4.11, 15.07 et. sold 2006.
78 280z 5spd parted out
75 280z 2+2 parted out
77 280z, 82 zxt swap, t5, megasquirt, intercooled rb25 turbo, ARP studs, 440cc, pallnet rail, walbro pump, 60mm TB, 3" turbo back with electric cutout, welded r200 3.54. Current project.

#2 skirkland1980

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Posted 16 November 2013 - 07:19 AM

Back pressure could be what's causing the wastegate to open. Not necessarily the boost controller. If you disconnect the vacuum hose from the wastegate and make a pull, see if the boost stays the same. If so you need more spring pressure on the wastegate.

:1983 280zx turbo, L28ET, all stock internals, 96 saab 900 intercooler w/2.25/2.50" piping, 3" mandrel bent exhaust, megasquirt II v3.0, 440cc injectors, walbro gsl392 255lph fuel pump, aeromotive regulator, -6 supply lines, custom fuel rail, accel 8.8 300+ ignition wires, MSD 8202 coil, homemade boost controller, Garrett TC4305 turbo, 70mm throttle body, Godzilla BOV, Turbonetics wastegate, custom intake, Cooling Mist H2O/meth injection, 20psi boost, all stock body, stock interior and wheels, TH350 trans 4000 stall with B&M 'street stick' shifter, dunlop tires 205/65/R15. best 1/8 mile of 9.40@81 mph on the slipping Jatco tranny and stock intake w/ 60mm tb.

:1983 280ZX NA. L28E, 5 speed, MS2 V3.57, 440cc injectors. Otherwise completely stock.


#3 redzedturbo

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Posted 23 November 2013 - 05:37 PM

Do not run or make a pull with the wastegate disconnected!!! that is asking for a engine rebuild. (overboost) What the hell skirkland you know better than that? The ceramic wheels are fine for alot of boost but the epoxy holding it on will not deal with the heat. that turbo 12 psi is safe. I have a turbonetics t04e 50 trim with a bored t3 turbine i get 5 psi at 2500 and all in at 3300 at 10 psi on low and 16 on high boost. I have a homemade 2 stage boost controller. I recommend a t3/t4 on the l28 its a perfect fit. Just don't go huge unless your mods warrant it. Welcome to hybrid man!!! Best of luck. Shame skirkland..... :icon11:


Edited by redzedturbo, 23 November 2013 - 05:39 PM.

Addicted to boost!

#4 Tony D

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Posted 24 November 2013 - 03:59 AM

Waste gate...what's that?
Misanthropic Anthroparion Class 5 Hoarder, aspiring to posthumous fame as my containers are cut open and the market floods with crap I've squirrelled away over the years! I endeavour to persevere...

#5 skirkland1980

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Posted 24 November 2013 - 05:16 AM

You still have control of the boost with the pedal on the right.

:1983 280zx turbo, L28ET, all stock internals, 96 saab 900 intercooler w/2.25/2.50" piping, 3" mandrel bent exhaust, megasquirt II v3.0, 440cc injectors, walbro gsl392 255lph fuel pump, aeromotive regulator, -6 supply lines, custom fuel rail, accel 8.8 300+ ignition wires, MSD 8202 coil, homemade boost controller, Garrett TC4305 turbo, 70mm throttle body, Godzilla BOV, Turbonetics wastegate, custom intake, Cooling Mist H2O/meth injection, 20psi boost, all stock body, stock interior and wheels, TH350 trans 4000 stall with B&M 'street stick' shifter, dunlop tires 205/65/R15. best 1/8 mile of 9.40@81 mph on the slipping Jatco tranny and stock intake w/ 60mm tb.

:1983 280ZX NA. L28E, 5 speed, MS2 V3.57, 440cc injectors. Otherwise completely stock.


#6 beaniam

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Posted 24 November 2013 - 07:30 AM

I have no intentions of running with the WG disconnected.  I put in the hallman boost controller and the flutter at 13 went away.  12psi is fun, 13 is more fun 14 is more yet.  I want more but mostly I want some peace of mind at 14 knowing the turbo isn't going to self destruct.  A t3/t4 is in the future.  I don't plan on any future mods outside of what's in my sig.  What trim would be recommended for that?


Edited by beaniam, 24 November 2013 - 07:31 AM.

76 280z, CAI, 240sx TB, 6-2-1, 2+2 flywheel/clutch, 81zx 5spd, 4.11, 15.07 et. sold 2006.
78 280z 5spd parted out
75 280z 2+2 parted out
77 280z, 82 zxt swap, t5, megasquirt, intercooled rb25 turbo, ARP studs, 440cc, pallnet rail, walbro pump, 60mm TB, 3" turbo back with electric cutout, welded r200 3.54. Current project.

#7 Xnke

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Posted 24 November 2013 - 08:49 AM

The ceramic wheel RB turbos don't like the higher shaft speeds that occur with higher boost. it's well known and well documented.



#8 jeffp

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Posted 02 February 2014 - 06:18 PM

seems you are getting boost late. A good setup will give you 22-25psi of boost @ 3K if done right. keep working on it.



#9 beaniam

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Posted 20 February 2014 - 06:54 AM

Not on this turbo I'm not.  When the weather gets nicer I've got to decide on what turbo to go with.


76 280z, CAI, 240sx TB, 6-2-1, 2+2 flywheel/clutch, 81zx 5spd, 4.11, 15.07 et. sold 2006.
78 280z 5spd parted out
75 280z 2+2 parted out
77 280z, 82 zxt swap, t5, megasquirt, intercooled rb25 turbo, ARP studs, 440cc, pallnet rail, walbro pump, 60mm TB, 3" turbo back with electric cutout, welded r200 3.54. Current project.

#10 wigenOut-S30

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Posted 17 March 2014 - 02:45 AM

I have a Garrett T3/T4E 50 trim with a stage 3 exhaust wheel. I have loved this turbo and it matches the L28ET very well. I get 20 psi around 3K or so depending on what RPM you start at. Boost really does not fall off between shifts and makes good power. I made right at 390-400 wheel HP and 400 lbs TQ on pump at 20psi. Are there better turbo's out there? Yes. but for the price It wasn't worth it to me.  If you have the money, GT30R would be good or a comparable Borg Warner variant.


1977 S30: L28 turbo/intercooled:385rwhp 390TQ:11.56@122

gallery_372_579_19959.jpg


#11 Sideways

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Posted 17 March 2014 - 11:53 PM

I have a Garrett T3/T4E 50 trim with a stage 3 exhaust wheel. I have loved this turbo and it matches the L28ET very well. I get 20 psi around 3K or so depending on what RPM you start at. Boost really does not fall off between shifts and makes good power. I made right at 390-400 wheel HP and 400 lbs TQ on pump at 20psi. Are there better turbo's out there? Yes. but for the price It wasn't worth it to me.  If you have the money, GT30R would be good or a comparable Borg Warner variant.

May I be nosey and ask what else was done to that motor, or is that a basically stock block?



#12 wigenOut-S30

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Posted 18 March 2014 - 10:13 AM

Yeah sure.. here is a rundown on the motor and what I am running.

 

stock bore L28ET block
forged JE pistons
stock forged rods and crank

Nismo Metal HG
Rebuilt P90head 3angle valve job with port matching
Garrett 50 trim T3/t4 turbo - Ported exhaust housing to match gasket and manifold
PTP Turbo Blanket
Non turbo "A" cam
Tial 38mm external wastegate
3" downpipe and exhaust
440CC injectors
65mm TB
2.5" aluminum IC piping
bar and plate front mount IC
50mm tial BOV
shaved and ported intake manifold
ported exhaust manifold
Aluminum radiator
dual 12" zirgo electric fans
aluminum fuel rail
Walbro 255 fuel pump
Magnecor plug wires
Mega-squirt and Spark ECU


1977 S30: L28 turbo/intercooled:385rwhp 390TQ:11.56@122

gallery_372_579_19959.jpg


#13 beaniam

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Posted 18 March 2014 - 05:02 PM

I have been looking more into an internally wastegated holset variant lately.
76 280z, CAI, 240sx TB, 6-2-1, 2+2 flywheel/clutch, 81zx 5spd, 4.11, 15.07 et. sold 2006.
78 280z 5spd parted out
75 280z 2+2 parted out
77 280z, 82 zxt swap, t5, megasquirt, intercooled rb25 turbo, ARP studs, 440cc, pallnet rail, walbro pump, 60mm TB, 3" turbo back with electric cutout, welded r200 3.54. Current project.




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