Is this fixable ?

[Wedge]

Hi i just bought an RB26 to put in my Fairlady and while i was undoing the turbo intake pipes I saw something wired . After checking closer my turbo is broken . They are R34 N1 turbos serial 14411AA403 . So is this fixable or do i need a new one .

Pictures !

http://i39.photobucket.com/albums/e162/bashand2001/Broken%20Turbo/S8000522.jpg
http://i39.photobucket.com/albums/e162/bashand2001/Broken%20Turbo/S8000522.jpg
http://i39.photobucket.com/albums/e162/bashand2001/Broken%20Turbo/S8000532.jpg
http://i39.photobucket.com/albums/e162/bashand2001/Broken%20Turbo/S8000535.jpg
http://i39.photobucket.com/albums/e162/bashand2001/Broken%20Turbo/S8000537.jpg

Serial
http://i39.photobucket.com/albums/e162/bashand2001/Broken%20Turbo/S8000528.jpg

Thanks

[mcfly]

The compressor wheel is not repairable.

[inhumane]

damn that sucks

[DrMango]

that really sucks but now its time to upgrade lol!

Kyle

[gtrcanadaSUCKSCOCK.com]

Did that thing suck up a bird ?

[Wedge]

I dont know what happened i got the engine like that . Then can the comp. wheel be replaced ?

[mcfly]

If they are indeed r34 n1's then yes. Call up garrett and start talking to people for replacement parts.

[DrMango]

If you can find a new CHRA and have it rebuilt

Kyle

[Wedge]

Ok thanks Im to going to a shop near by that repairs turbos to have an idea of the repair cost . I just didnt know if it was doable or not . Thanks guys ill keep you posted on the quotes for futur references .

[Terrh]

that's totally fixable.

well, not the wheel, but the turbo. Any decent turbo shop can do it. If you don't have any luck getting it done I know a shop stateside that will fix that for around $150.

[Rapier46]

Wow, that might be achieved from no air filters.. Sucking in some rocks maybe?

[Skym]

Ouch.

As long as compressor housing is not scored heavily from off balance compressor wheel, can be rebuilt. CHRA will need to be rebuilt, or replaced, as off balance compressor wheel probably would have worn out the bearings inside CHRA, etc.

I would advise to pull intercooler off and flush it towards turbo end to try and dislodge broken off parts of compressor wheel. Or probably better to replace intercooler, clean / check inside of intake piping to make 100% sure nothing will reach engine and do some damage, if it hasn't already.

Looks like someone left a rag in a pipe (to stop dust or nuts, etc getting into pipe while working on car) and forgot to remove and it got sucked in and wrapped around the compressor wheel.

[Wedge]

I really dont know what happened I bought the engine from C-Unit on GTRC it was from a skyline he parted out . He said the car was boosting fine when he got it he ddint drive it alot just from harbor to his home . He did a compression test for me and everything wa top notch in the 155-160 zone so i really hope everything is fine in the engine and that the shrapnel got cought in the I/C I dpnt have the I/C so i cant check .

[DrMango]

Wow. Well, like we said it is fixable. Just need a new CHRA and a good shop to rebuild it and balance everything. Im sure if nothing got to the valves/cylinders then your compression should still be good. Be thorough and see if there is any bits loose anywhere

Kyle

[Wedge]

Well im back from the shop and its 500$ to repair and he probably will make me an hybrid with a GT28 wheel and housing ... Im not sure what to do .

[DrMango]

Would be all new parts basically and steel on both sides though?

Kyle

[Wedge]

Thats why im scared the wheel and housing would be used but the Ball bearing and everything else would be new .

[DrMango]

The compressor wheel will be reused?

Kyle

[Wedge]

Ya from another turbo they have that had a blown turbine ceramic wheel .

[DrMango]

Is that just to save a buck? It cant be that much of a price jump to go all new?

Kyle

[Wedge]

Thats what i told him . I think im gonna call him back to tell him go all new parts im not willing to pay to get used just to save a buck its just because he wanted to fix quickly for me and he didnt know if he could find the parts fast

[DrMango]

Yeah if your going to go so far to save the N1s then you might as well be sure they will hold up for a long time. Go all new man. It sucks to wait sometimes but it will be worth it. Your lucky to even have a turbo rebuild shop close by.

Kyle

[Wedge]

Ya i guess they are known to have high prices because the other closets place that does that is a 2 hrs drive from where i live . I wanted to keep the N1 because they are BB and steel wheel they can bring me to my goal of a lag less 480-500 hp . Thanks for the insight Kyle

Yves

[DrMango]

They are respectable turbos and no matter what you can sell them for a decent price on here or GTRC. Good luck with them

Kyle

[mcfly]

you want 500 whp with n1's?

[Zacho]

Have you spoken to the seller about this?

I don't know how you wouldn't notice that....maybe it's just me?

[TougeJunkie]

Im with mcfly on this one .. dont bother fixing them, I would find a set of HKS GT2540's to put on instead

[DrMango]

you would spend $2000-2500 to get new turbos or he could just spend $750 and fix the one thats broke. Of course thats easy to say when your talking about other peoples money.

I don't see where McFly said dont fix them. He just said you wont see 500 hp with N1...

Kyle

[mcfly]

I was just stating the compressor wheel was not repairable ;)

[DrMango]

How much could you see N1 twins putting down McFly?

Kyle

[Skym]

Which N1 turbo's????

I've seen dyno graphs from Japan of R33 N1 turbo's producing 445ps at engine and R34 N1 turbo's producing 455ps at engine. I think that's at around 1bar / 14.7psi.

Common to extract around 550ps at engine with R34 N1 turbo's when boosted up on Nur spec engine with cams.

[mcfly]

he stated r33 n1's. either way on pump gas you will never see 500.

[DrMango]

wow still pretty good

Kyle

[Skym]

Should be able to produce over 500hp at engine.

A dude from NZ got his R34 Nur engine modified by Mines that is capable of 560hp (UK hp) with R34 N1 turbo's, Mines cams, injectors, headgasket, Mines ECU, Nismo radiator, engine oilcooler, etc.

Look on GTROC forum. His forum name is AmeriKiwi.

Here's the thread where he mentions the hp at what boost level that Mines Produce with their cars (He was expecting 520hp @ 1.2bar and 560hp @ 1.4bar) -

http://www.gtr.co.uk/forum/5030-amerikiwis-latest-photos-2.html

Spec list on this page -

http://www.gtr.co.uk/forum/5030-amerikiwis-latest-photos.html

If only 10ps difference between R33, R34 turbo's, should be easy to extract over 500hp at engine with high boost level, cams, R33 N1 turbo's.

[Aaron]

I would be more than happy with that power in a GTR.

Zulu's car scared the shit out of me a .8 bar before it was even tuned let alone 1.8 bar.

[Aaron]

I would be more than happy with that power in a GTR.

Zulu's car scared the shit out of me a .8 bar before it was even tuned let alone 1.8 bar.

[TougeJunkie]

you would spend $2000-2500 to get new turbos or he could just spend $750 and fix the one thats broke. Of course thats easy to say when your talking about other peoples money.

I don't see where McFly said dont fix them. He just said you wont see 500 hp with N1...

Kyle

Well I did not think he would make his goal with the R33 N1's, but close to what he wants, he has to spend money to get an old turbo back to life that could be damaged or weakened internally. Personally I would drop the coin on a nice set of new turbos than roll the dice on old ones. He would also make the numbers he wants with out pushing the turbos beyond their efficiency

[Wedge]

Ok guys i spoke with the seller we split cost 50/50 . He said he couldnt see the damage because he drove the car less then 100 km from the harbor to home then parted it at home . The turbos are R34 GTR`s and yes paying 750$ is better then 2500 for new turbos since its gonna be a complete rebuild . Supossedly the car had a dyno slip that came with it claiming 481 whp . I Wish i could do 500hp but if i get 450 ill be very happy since im not putting the engine in a GTR but in a 2500 lbs 78 Fairlady Z . More then that would be unstreetable I think .

[mcfly]

Who sold you the turbos? If he took them off the engine for you he sure saw the compressor wheel damage.

[Wedge]

No ,i bought a complete engine from someone on GTRC he imported the car in and parted it .

[DrMango]

Ok guys i spoke with the seller we split cost 50/50 . He said he couldnt see the damage because he drove the car less then 100 km from the harbor to home then parted it at home . The turbos are R34 GTR`s and yes paying 750$ is better then 2500 for new turbos since its gonna be a complete rebuild . Supossedly the car had a dyno slip that came with it claiming 481 whp . I Wish i could do 500hp but if i get 450 ill be very happy since im not putting the engine in a GTR but in a 2500 lbs 78 Fairlady Z . More then that would be unstreetable I think .

Even 400 whp will be one hell of a ride. LOL only on a skyline forum would someone say "only 400 whp"

Kyle

[DrMango]

Well I did not think he would make his goal with the R33 N1's, but close to what he wants, he has to spend money to get an old turbo back to life that could be damaged or weakened internally. Personally I would drop the coin on a nice set of new turbos than roll the dice on old ones. He would also make the numbers he wants with out pushing the turbos beyond their efficiency

If its getting rebuilt then he's not really rolling the dice. When you get a turbo rebuild and they use all new parts and balance it propperly, it should hold up like new. If not then he goes back to the rebuid shop and they gauantee their work. Even if his other turbo gets rebuilt too then he is only ~$1500 for 2 rebuilts. Not too bad

Kyle

[DrMango]

Who sold you the turbos? If he took them off the engine for you he sure saw the compressor wheel damage.

He bought the whole engine and turbos from charles

Kyle

[Wedge]

Charles, you know him Kyle ?

[DrMango]

I have a bad taste in my mouth for him and hope he stays off this forum. Thats all I'm about to say on the topic.
I am happy he is helping with your issue though

Kyle

[Wedge]

Finally i came back form the place and as i read on the internet somewhere those turbos are not rebuildable because of the way the bearings are made . So i got an HKS GT2871R to replace my N1 its the closest turbo to the R34 N1 except its sleave bearing ... Cost 628$ and my other turbo is fine he checked it .

[mcfly]

you cant mix and match the turbos. you need two of the same.

That 2871r is way bigger then a r34n1. Call garrett and ask for replacement parts on r34n1's

[Wedge]

Thats what i thought but he told me that its not gonna change much one is just going to push less air . I dont know much about turbo i read Corky Bell's book a long time ago and it doesnt feel right to do what hes saying . Basiclly he told me that to rebuild the turbo he would have to have a completely new CHRA from Garrett . Im confused i told him to wait so i can get more info .

[DrMango]

LOL thats what we told you to get, a new CHRA.
You can't mix and match turbos, thats for sure. This isnt an RX7..
You need to find another 2871r now or a R34n1 like McFly said. I would completely stop talking to the turbo shop you have been dealing with. They obviously don't know much about anything and have been filling your head with bullshit from the start

Kyle

[mcfly]

well he could do it, if he ran a compound setup, n1 turbo into the 2871 intake.

Of course the boost levels would be retarded and a complete nightmare for tuning on pump. cool factor would be off the charts.

[DrMango]

That was my point. Its not something I think he will be taking on though. Like you said tuning would suck the wallet

Kyle

[Wedge]

Thanks guys , I told him to stand by ill try to find a CHRA and have it rebuild elsewhere . Now i got to find a Garrett distributer in Québec .

Yves

[DrMango]

I would just talk to some sponsors on GTRC and see who can deal with garret. I'm sure someone can find you a CHRA. Make a thread in WTB and a thread in general discussion to see if anyone can find one.

Kyle

[Wedge]

I got an answer on Montrealracing forum that their was a Garrett distributor in Québec city so i called him up they are supposedly the best in the province they are called Turboexpert . The guy over their told me to ship him the broken turbo and that he would find me what i need and fix it . He seemed pretty confident he could fix it . I hope he can .

[DrMango]

sounds promising. keep us updated

Kyle

[Wedge]

Well i got an email back form ATP turbo about my turbo they said they called Garrett and Garret told them they make no CHRA for this specific turbo. I think i found a turbo that has the exact same specifics AR , Trim , compressor wheel size , same on turbine side so their is still hope garret serial is 707160-7 they are the same except the are GT25 housing and not GT22 like my N1 . With that i think i could just get a new one and be done since they are the same size internaly i can pair it with my other N1 .

[DrMango]

New is always better. post up the info you have on both

Kyle

[Skym]

Nissan, Nismo turbo's are custom built for Nissan by Garrett Japan. You probably won't be able to order it from Garrett, as it's probably under a contract that they can't sell it to you directly. I guess it stops people bypassing Nissan and going direct to Garrett.

[mcfly]

They used to sell them as gt2556r

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2860R_707160_7.htm

[Wedge]

The turbos i found had these specs:

N1 / 707160-7
Compressor
Housing = GT22 / GT25

Compressor Wheel = C106 / GT25

Compressor = 44.5 - 60.0 / same
Wheel (mm)

Compressor = 55T / same
Trim

Compressor = 0.42 / same
A/R

Turbine = T25 / GT25
Housing

Turbine Wheel = GT25 / same

Turbine = 42.4 - 53.8 / same
Wheel (mm)

Turbine = 62T / same
Trim

Turbine=
A/R 0.64 / same


I think they are the exact same turbos then if i can buy the CHRA for that turbo then im set i dont what is going to be les expensive in the end complete Turbo or CHRA some places have the GT2860R-7 at around 900$ us so im crossing my fingers it less expensive for the CHRA + assembly .

[Wedge]

Took my info from this page BTW

http://homepage.ntlworld.com/tbroom/Turbos.htm

[mcfly]

I think they are the exact same turbos then if i can buy the CHRA for that turbo then im set i dont what is going to be les expensive in the end complete Turbo or CHRA some places have the GT2860R-7 at around 900$ us so im crossing my fingers it less expensive for the CHRA + assembly .

They used to sell them as gt2556r

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2860R_707160_7.htm

that post = your turbo, garrett says so. They no longer list them on their site publicly though

[Wedge]

Good if it is the same them im set WOOT . Now ill wait for prices .

[Terrh]

just buy a new compressor wheel and have it put on. You don't need a whole new CHRA.

[Wedge]

Yes i do ,Ball bearing turbos need complete CHRA to rebuild that is my problem .

Found one CHRA on AMZ Performance website for 841.49 $ US not to bad i guess

[mcfly]

you do not need to rebuild it if your compressor wheel is the only part damaged though.

[Skym]

Interesting.

If turbo has to be balanced, you do.

Read this -

http://www.turbo.co.nz/alltech/service.php?Page=Turbo

[rb-racer]

You can re/re the wheels on a ball bearing turbo. They are in fact serviceable despite the myths. a vsr machine is required to balance them though.

[Wedge]

Probleme with my turbo is that it has massive shaft play and the shaft was arcing a little so i need a CHRA

[mcfly]

well that sucks. you do indeed require the chra then unfortunately. Shitty luck

[Terrh]

I needed new compressors for my 2860's. exact same damage.

Tialsport in Michigan rebuilt them very cheaply. I forget how much the exact cost was but under $300 for the pair.

[Wedge]

Damn that is cheap how are they holding up since then ? And what did happen to your compressor because i dont know for sure about mine since i bought the engine alone . what exactly did they do with your turbo new wheel and bearings or complet CHRA ?

[Terrh]

I traded them immediately after the rebuild for some 2871's which I haven't even bolted to a motor yet.

I haven't heard any complaints from their new owner.

I have no idea what they did, aside from fix it.