new kat dyno z31 turbo 8psi

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AndrewHuffman
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new kat dyno z31 turbo 8psi

Post by AndrewHuffman »

1996 130k about 150 psi compression with jwt cams
step down harness for obdI nistune
sti yellow tops
z31 t3 1985 or 1986 rebuilt
oe s14 maf
q45 pump oe regulator
ebay fmic, manifold, wastegate, bov, exhaust, intake
8psi
93 octane

233whp 223 tq

Image

vid
http://youtu.be/FfeuPgx8k64
AndrewHuffman
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Post by AndrewHuffman »

no love?
no hate?
lurker
jholman05
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Post by jholman05 »

What made ya go with the z31 turbo? I made 20ftlbs more torque and the same power with my SR20 T25 at 7psi

I guess now you have an easy route to use a 3071 or HX/HY35.

Looks like a smooth dyno plot.
Image
2012 - S14 KA, Nismotronic, GTi-R T28 12psi, Meth, PSM HMIC, DW550cc, N62, S15 HLSD, Spec 3, Fidanza = 12.4 @ 110
2013 - 9.0 Wiseco/Manley, Nismotronic, GT2876R 23psi, Meth, PSM HMIC, 850cc, N62, S15 HLSD, Z32 Spec 3, D21 Fidanza = ??.? @ ??? 440whp/380wtq
YouTube Channel -> http://goo.gl/MZ5EE
AndrewHuffman
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Post by AndrewHuffman »

I didn't want to choke the motor. The power band holds all the to redline. Also wanted something I could find in the junkyard. Keep it cheap.
LPime001
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Post by LPime001 »

That is an awesome powerband.
Must feel amazing on the streets.

jholman05
Did you make those number on a stock block and pump gas?
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jholman05
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Post by jholman05 »

Yes to both, it did taper up top but made good torque down low... felt like driving a V8 that got 30mpg. I kind of miss the simplicity of that setup.

viewtopic.php?t=38177&highlight=
Image
2012 - S14 KA, Nismotronic, GTi-R T28 12psi, Meth, PSM HMIC, DW550cc, N62, S15 HLSD, Spec 3, Fidanza = 12.4 @ 110
2013 - 9.0 Wiseco/Manley, Nismotronic, GT2876R 23psi, Meth, PSM HMIC, 850cc, N62, S15 HLSD, Z32 Spec 3, D21 Fidanza = ??.? @ ??? 440whp/380wtq
YouTube Channel -> http://goo.gl/MZ5EE
AndrewHuffman
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Post by AndrewHuffman »

stock motor, 93 octane
neverlift
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Post by neverlift »

:P

I can safely say another 10~20 ft lbs are easily accessible with removing some fuel and upping the timing some, but knowing the actual goal of this tune and known weak ring lands I opted for a large safety net. And almost nailed the power level pre dyno. I guessed 220.

very strong on the street.
Huffman
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jaysol92
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Post by jaysol92 »

That is definately a simple build but man that dyno graph is clean and constant. Nice work! especially considering its not expensive to replace or maintain.
AndrewHuffman
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Post by AndrewHuffman »

I'm thinking about selling my jet cams and either going 248/248 or bc stage 1 or 2.

Thoughts?
AtomGrimus
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Re: new kat dyno z31 turbo 8psi

Post by AtomGrimus »

im like 2 years late here lol, i got a t3 z31 turbo, i did research and it says on other forums that this turbo can only hold up to 6psi idk how true that is.
lets get sidewayz d00d
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Re: new kat dyno z31 turbo 8psi

Post by ICEMAN.KCMO »

That T3 is good to around 250Hp. I had the same turbo on a Dodge Daytona back in the day. Same turbo. I would go with this turbo aver the T25 any day of the week. T25 chokes power on top end..
Steve.
AndrewHuffman
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Re: new kat dyno z31 turbo 8psi

Post by AndrewHuffman »

I think it kept making power to 14psi
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Re: new kat dyno z31 turbo 8psi

Post by ICEMAN.KCMO »

It is a great looking dyno. Power looks very smooth. You still have the same turbo setup?
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street_240sx
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Re: new kat dyno z31 turbo 8psi

Post by street_240sx »

Hmmm should be good for alot more that that. I made 234/315 with a t25 off a ca18
03 evo8 gsr: stroker 2.3 ;)

04 evo8 gsr: totalled

96 integra gsr: sold

89 s13 coupe: stock dohc, gt3076, megasquirt

started 3/15/08, running 1/18/09, finally turbo 2/9/14 lmfao
AndrewHuffman
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Re: new kat dyno z31 turbo 8psi

Post by AndrewHuffman »

I got a new set up not, the old one detonated a piston after 1.5 years... I overheated the motor hot lapping at the track.

New engine is built, pretty much the same everywhere else, excepts I went with a gt3076r.

I made 280/270 on a mustang dyno at 13-14 psi
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street_240sx
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Re: new kat dyno z31 turbo 8psi

Post by street_240sx »

How did you make less than 300 hp or trq with a built motor?!?! I have a stock motor with a gt3076 and made 240/250 on 12psi and my motor has low compression in the #3
03 evo8 gsr: stroker 2.3 ;)

04 evo8 gsr: totalled

96 integra gsr: sold

89 s13 coupe: stock dohc, gt3076, megasquirt

started 3/15/08, running 1/18/09, finally turbo 2/9/14 lmfao
AndrewHuffman
240sx Wannabe
Posts: 169
Joined: Mon May 07, 2012 2:48 pm
Location: Jacksonville Fl

Re: new kat dyno z31 turbo 8psi

Post by AndrewHuffman »

Because forged internals=lower compression ratio.

Low boost, over safe tune. Rich and retarded
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