Author Topic: upgrade my turbo (Read 7299 times)

fez200 · « **on:** Sep 7, 2006, 11:28PM »

im looking at upgrading my turbo on my current U13 attesa.

what would be a good step without costing the earth, ie. get mine flowed etc. or get a T28 etc. $$$$$

bungs · « **Reply #1 on:** Sep 8, 2006, 12:40AM »

best bang for your buck is definitely a t28, GTiR t28 if you can find one

should be able to find a T28bb for around $450 or a gtir t28 for 500ish. You'll definitely feel a big difference going from a t25g

Cru1se_Missle · « **Reply #2 on:** Sep 8, 2006, 12:51AM »

if your on a budget, T28 from the gtir as bungs said is well worth it.
ive just sold mine, but i think i have a spare, ill have to get back to u on that one

fez200 · « **Reply #3 on:** Sep 8, 2006, 01:31PM »

yeah sweet, if you can find out that would be great.

my current T25G is only 2 years new, as when i bought the car the old owner had not let it cool down after driving and totally killed it.

KeGs · « **Reply #4 on:** Sep 9, 2006, 04:16AM »

or if you have a bigger budget you could go with a gt2871r rated at 350hp

LUP15 · « **Reply #5 on:** Sep 9, 2006, 10:31AM »

$450 for a t28bb? tell me where from... they usually go for around $700

bungs · « **Reply #6 on:** Sep 9, 2006, 12:23PM »

If you look hard enough on various forums you can find them for that much.

Marty · « **Reply #7 on:** Sep 28, 2006, 08:10PM »

Quote from: KeGs on Sep 9, 2006, 04:16AM

or if you have a bigger budget you could go with a gt2871r rated at 350hp

HaHa, thats whats sitting in my cupboard

Marty · « **Reply #8 on:** Feb 22, 2007, 06:03PM »

the car is at the mechanics now getting the turbo done,
but he seems to think that grinding the block still won't make it fit, he's gonna try any way.

so can someone whos done the upgrade pm me or email me the company that did it
cheers,

[email protected]

heres the way he wanted to install it too
http://www.amnet.net.au/~orion/attesa/new_turbo/upsidedown.JPG
but the IC piping would have to been modified quite significantly

Budgie · « **Reply #9 on:** Feb 22, 2007, 06:34PM »

Interesting Marty...

I would avoid changing the IC piping as the factory setup in the HNU13 is pretty decent (location wise) already.

Marty · « **Reply #10 on:** Feb 23, 2007, 08:02AM »

yeh, he's gonna attempt to grind bits off turbo and engine,
he's just worried that the oil/water reservoir can't be grinded too much, which is understandable

oh well we'll see how it goes today
I

Marty · « **Reply #11 on:** Feb 23, 2007, 03:33PM »

seems he had no dramas with the fitting, he's just waiting on enzed to provide the hoses and stuff, grrr to enzed
won't get it til monday now

Wolf In Sheep’s Clothing · « **Reply #12 on:** Feb 23, 2007, 04:09PM »

Good job with the upgrade mate. I realy think the GT2871R will be the perfect turbo for the Attesa.

Damn you guys are your modding to your HNU13's. Mine needs some serious modding, I'm just too poor from hollidays and insurance to mod it

Let me know how the box handels the power.
I'm realy starting to wonder if they realy are as weak as people say, I know theres quiet a few GTiR's around with around the 300whp that have stock boxes, and the GTiR box is fairly similar.
But its obviously going to depend on the driver as well.

Budgie · « **Reply #13 on:** Feb 25, 2007, 09:27AM »

Marty's car is a rebuilt auto 'wolf...

But yeah, I agree with you. I think treated well, the gearboxes are great!

Wolf In Sheep’s Clothing · « **Reply #14 on:** Feb 25, 2007, 05:21PM »

Ahh my mistake! I'm interested to see the powerfigures it puts down with the auto.

Marty · « **Reply #15 on:** Mar 14, 2007, 08:06PM »

http://www.amnet.net.au/~orion/attesa/new_dyno.JPG

they took long enough but its finally finished.

haven't driven it hard yet, but in the short squirt up the road its so much quicker, as in the front of the car now lifts up slightly. I had to back out as it was round a corner too.

will get some vids up later when I have time

Budgie · « **Reply #16 on:** Mar 14, 2007, 10:49PM »

Nice!

JelloBello · « **Reply #17 on:** Mar 15, 2007, 10:20AM »

very nice indeed Marty.... shotgun a ride next time i see you.

After some uber quick calculations that gives ~245kw at the fly (with a 30% drivetrain loss) and that is even nicer

(174 / .7 = 248.5)

LUP15 · « **Reply #18 on:** Mar 15, 2007, 12:25PM »

thats a really confusing graph. someone explain what im looking at?? lol

what boost was that run on? torque peak power?

JelloBello · « **Reply #19 on:** Mar 15, 2007, 12:32PM »

hehe...

Blue Line is Power (in HP) - read from the left hand y axis
Green Line is Torque (in Nm) - read from the right hand y axis

Peak Power is 232.2HP @ 6900 ~ 174kw
Peak Torque is 303Nm @ ~4500ish
Boost is 1.1Bar ~ 15-16psi

As I've already said to marty - i think the exhaust is letting him down, but that's still an awesome figure and he's happy with it.

LUP15 · « **Reply #20 on:** Mar 15, 2007, 12:46PM »

what other mods were done? i too woudlve expected closer to 200kw with that turbo

JelloBello · « **Reply #21 on:** Mar 15, 2007, 12:52PM »

(hope marty doesn't mind me answering for him)

copy + paste from his sig:

Mods - Bosch 910 fuel pump, Nismo 555cc injectors, Z32 AFM, USB Bikirom, Full Whiteline Handling Kit, DBA Rotors, Tomei Poncams + GT2871. (174awkw)

as well as a 2.5inch exhaust dump pipe back, FMIC, boost controller (der.) and WAI pod filter.

Loop · « **Reply #22 on:** Mar 15, 2007, 01:31PM »

Would be interesting to see the boost curve over the whole rpm range, because with those modes I reckon 200kW should be attainable as well

LUP15 · « **Reply #23 on:** Mar 15, 2007, 03:24PM »

hmm noticed the cams just then... should be over 200kw... drivetrain loss cant be that bad? i know the silvia ppl get around 230-240kw..

must be the dump + smaller exhaust...

Budgie · « **Reply #24 on:** Mar 15, 2007, 03:30PM »

I would be hedging my bets on the rotten factory dump pipe... and the AWD auto box.

Marty · « **Reply #25 on:** Mar 15, 2007, 07:21PM »

http://www.amnet.net.au/~orion/attesa/AFRs.JPG
Air fuel ratio
Apparently thats really good, a lot jump around quite a bit, but this one is pretty even

http://www.amnet.net.au/~orion/attesa/boost.JPG
boost
I'm sure thats a reading of 1.14 bar on the side

their graphs are very confusing though.

LUP15 · « **Reply #26 on:** Mar 15, 2007, 07:47PM »

yeah nice afrs, but boost is a bit jumpy? what are you using to control the boost?

JelloBello · « **Reply #27 on:** Mar 15, 2007, 08:12PM »

yeh... that boost is a bit sus, also I would've thought that a gt2871rs could hold more then 13.77psi at redline? or does this sound about right?

Marty · « **Reply #28 on:** Mar 15, 2007, 09:11PM »

had one of them ebay controllers on there,
but he changed it to a turbosmart one because the ebay one kept spiking and was inconsistent.

LUP15 · « **Reply #29 on:** Mar 15, 2007, 09:45PM »

$:-\$ invest in a good EBC. ive got a greddy one and omg, it did WONDERS to the spool up time, even on my t25. seriously quick!

just did a bit of reading on the gt2871r, what trim and exhaust housing did you get? these turbos apparently have about a 16-18psi efficiency range. nice!

just boost it up. i think thats why your not getting the higher power levels we all expected

but get an ebc first, bleeders sarrrkkk

what are the specs on the cams as well? im very curious what your power will be, and then from there we can see how much drivetrain loss we get. even tho its an auto ....