How Are The Garett 28-60r -5 Turbos On A Gtr?

[GTRBOS]

hi guys i was just speaking to couple people and getting some advice of what turbos to get for my gtr, well alot of people are giving me different turbos but about 75% of tyhem are telling me to go for the garett 2860r -5 turbos, they said they are good for pretty big power and responsive aswell, liek im more after a responsive gtr but also want to pu8sh some pretty big power aswell, my bottom end is pretty much standard, my car has about 240-250kw att al 4 wheels at the moment and its on 13psi and that is on standard ceramic turbos

can yous guys out there that know what yous are takling about just give me advice of what turbos are good fopr my gtr and something that yous think that will suit me but im really thinking of these turbos at the moment,

cheers guys

[rev210]

If you want to push 'big power' build a motor to handle it or .... you will be forced to later.

You may also like to consider the other components that will die as the power level increases, it's all money.

So far the evidence is that the HKS turbo range out performs the so-called garrett equivalents by averages of peoples experiences.

The GT-SS is about the ultimate for the standard engine in terms of power limits and performance. The power made by these will slot under the breaking point of reliabillity for the gearbox and other bits. However, when pushed will exceed the safe/reliable power limit of an unopened old stock engine.

You will want a bunch of other supporting modifications as usual like injectors/fuel pump/ecu and cams are good too.

Tot up the dollars and even without a rebuild it's a little bit of money. Your old motor still might pop shortly afterwards and even if it doesn't the more power you have the sooner you are going to need to rebuild it.

Hope that helps

[GTRBOS]

If you want to push 'big power' build a motor to handle it or .... you will be forced to later.

You may also like to consider the other components that will die as the power level increases, it's all money.

So far the evidence is that the HKS turbo range out performs the so-called garrett equivalents by averages of peoples experiences.

The GT-SS is about the ultimate for the standard engine in terms of power limits and performance. The power made by these will slot under the breaking point of reliabillity for the gearbox and other bits. However, when pushed will exceed the safe/reliable power limit of an unopened old stock engine.

You will want a bunch of other supporting modifications as usual like injectors/fuel pump/ecu and cams are good too.

Tot up the dollars and even without a rebuild it's a little bit of money. Your old motor still might pop shortly afterwards and even if it doesn't the more power you have the sooner you are going to need to rebuild it.

Hope that helps

yer well im thinking of getting the cams, fuel pump and injectors before i even get these turbos but i got alot of mods i think, ive got the power fc to help but yer at the end of the day i need to get itr rebuilt but as long as i know that these turbos will be ok for a while anyway thats all i need, im not really into the gt-ss but the more help i get the better it is for me, thanks for the help anyway mate,

cheers

[rev210]

yer well im thinking of getting the cams, fuel pump and injectors before i even get these turbos but i got alot of mods i think, ive got the power fc to help but yer at the end of the day i need to get itr rebuilt but as long as i know that these turbos will be ok for a while anyway thats all i need, im not really into the gt-ss but the more help i get the better it is for me, thanks for the help anyway mate,

cheers

The gt-ss make for a better street turbo than the larger -5's. If you really want the extra top end long term then the 2530's are the best pick.

[GTRBOS]

The gt-ss make for a better street turbo than the larger -5's. If you really want the extra top end long term then the 2530's are the best pick.

man i dont know why but my mechanic said that the 25/30 are shit, like i love 25/30 but he just changes my mind about them, like can you give me some more info on them, because i really like those turbos, like are they a really responsive turbo? and how is the top end on them,

cheers mate

[rev210]

man i dont know why but my mechanic said that the 25/30 are shit, like i love 25/30 but he just changes my mind about them, like can you give me some more info on them, because i really like those turbos, like are they a really responsive turbo? and how is the top end on them,

cheers mate

Find a new mechanic. If he said that, it's possible he doesn't have much of a clue. You don't want someone like that touching your car ever.

The top end on HKS 2530's ? well over 400rwkw good enough for you?

GT-SS will get you the better part of 350rwkw or more setup right.

You will find that the average power made by the people with HKS turbo variants is higher than the garrett, when looking through the RB26 turbo upgrade sticky. Apples for apples they seem to work better. The HKS tweaks are worth the extra.

[Roy]

Find a new mechanic. If he said that, it's possible he doesn't have much of a clue. You don't want someone like that touching your car ever.

Thats a pretty big statement I know of several people who have gone from 2530s to other Garrets 2860-5 and been happy as Larry with them. I know of one particular car that has had lots of time and effort put into its development and it has moved away from 2530s as the setup worked better with teh 2860.

So if they guy sayign 2530s are shit then so be it. As long as he can quanify why he thinks that and can back it up with results.

[Risking]

also have left the 2530's and gone with the garrett's in several cases.

for what you seem to want GT-ss

[rev210]

Thats a pretty big statement I know of several people who have gone from 2530s to other Garrets 2860-5 and been happy as Larry with them. I know of one particular car that has had lots of time and effort put into its development and it has moved away from 2530s as the setup worked better with teh 2860.

So if they guy sayign 2530s are shit then so be it. As long as he can quanify why he thinks that and can back it up with results.

Roy,

I'll admit I was being harsh but and I basically take your point about backing up the statement. Here on this forum we can have a go at looking objectively at this, with our collective experiences noted down for all to see and share.

I think -5's are a good 'budget' turbo, there's nothing wrong with that. Based on the only few examples I know of where an owner has gone to them from 2530's (usually because they broke a turbo) the performance/power is lower.

One off this forum which comes to mind is Boostd, from memory the 2530's were stronger power wise on the same built motor with a little less boost. The power was still good regardless so no doubt you could be happy about it still.

Results wise I've had a good look over our sticky thread and the HKS gear comes up better from a stats point of view on basically apples for apples setups. We are lucky to have those threads really, they help you weigh up the rubbish you often hear.

I think however calling the 2530's shit makes people look a bit stupid, given the information we sit on here. We don't even need to do the fanboi mine's / hks / 'insert hero car here' refferences to give the 2530's some well earned respect.

[rev210]

here's the stat's you come up with from reading through the Rb26 results thread

Standard stroke only comparison, includes budget and built motors on 98';

The average for the 2530's is; 388rwkw

The average for the GT-SS is; 335.4 rwkw

The average power made by the -5's is; 313rwkw

Of the same data the best power of the -5's was 388rwkw

Best of the 2530's was ; 451rwkw.

Best of the GT-SS was 364rwkw

Now if we are going purely of budget un-opened/ non-built motors maybe with just some drop in cams it looks like this;

-5's average ; 298rwkw

2530's average ; 358rwkw

GT-SS average ; 332rwkw

Edited March 30, 2008 by rev210

[Roy]

Interesting, as most the VIC GTRs are making abotu 350rwkws with the -5s. General consensus is they make similar power at similar boost, but make it sooner and are more responsive. Though it seems if you have enough engine internals and can run enough boost the 2530s can make more power at higher boost levels.

At the end of the day, they all make way too much power for a street car. I mean you rev out 2nd gear and there goes your licence

[Gav]

My money is on the -5 terbs.

Although my motor fits into the "built" category (2.8L, big lift/long duration cams etc), the -5 Garretts have absolutely transformed my power curve compared to the GT-RS units I had before. I'vs sacrificed less than 50hp top end (~530 compared to 580 rwhp), but gained massive mid range. The car has lost the sudden "kick in the pants", but feels like it's gained another litre of capacity.

[tacker]

I believe that Giant is also using the -5 on the R32 and that sure aint slow.

No doubt the 2530 is also a mighty turbo, really would be going wrong with either but i think the -5 are cheaper...well i know they are thats why i got them.

still its personal preference both seem to be a good thing

[GTRBOS]

well i always knew that 25/30 are a very good turbo and i do respect them but my mechanic told me to go for the -5, like i pretty much got a stock bottom end but im just about to get the cams and i got like the other supporting mods like the power fc, cam gears, turbo back exhaust, trust 100mm fmic and otheer stuff asweell but before i do buy the turbso the car will be fitted with tomei cams and injectors aswell as z32 afms but the only think i want to know is what people recommend m to get to get it a really fast responsive street car, i dont want lag and i dont want something thats not going to be reliable to my motor aswell, well rev210 i agree with you and you got a point, i never called the 25/30 shit but i think they are a good choice to go for and i have never been a fan of garett because i know nothing about them but i know more about hks but just like i said im more afetr responsive and a really good top end power, please tell me what turbos to go for and that will suit me, man it doesnt even have to be out of these turbso, it can be other turbos aswlel just as long as i know what is suited to me And what im buying,

thanks alot for the comments guys,

cheers

[rev210]

If you are happy with the idea of 350rwkw then the GT-SS would be a pretty good idea.

[rb26s13]

to get 350 out of the gtss's i imagine you'd have to push them quite hard.

[Swiper the Fox]

I used to be a big fan of the 2530's...having pushed them harder than anyone in this country (467 AWKW @ 34psi). But after having experience with the 2860-5 in a street/circuit car id have to say i was more than impressed. Their linear power delivery and boost response was awesome and a great match for a street/circuit orientated vehicle.

[tacker]

I would have thought that to have a responsive turbo then you will have to make some sacrifice some top end. And the same the other way, for a big top end then the lag will be more noticable.

[farch]

I would have thought that to have a responsive turbo then you will have to make some sacrifice some top end. And the same the other way, for a big top end then the lag will be more noticable.

+1 on that.

GT-SS are great for response and spread compared to 2530's.

Driven cars with both types btw.

[GTRsean]

My setup:

R32: stock bottom end

Tomei poncams

HKS GT2530's

supporting mods etc,

352RWKW @ 17psi

Full boost at 4800-5000 rpm.

Not responsive, but lots of mid and top end.

Something like R34 N1 turbo,s (2860's equivilent) would be a good compromise......