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Gtr R32 Turbo Choice

cactu5

By cactu5,
in Engines & Forced Induction

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cactu5 Enthusiast

cactu5

Posted
Posted

Hi there,

I have almost finished rebuilding my rb26dett motor with forged pistons, metal head gasket etc, and I am now on to replacing the turbos. The problem is I am not sure which ones to get. I am down to the usual three options......

Garrett 2860 -7's

Garrett 2860 -5's

&

HKS GT-SS's

I do not want more than 300kw's at the wheels with my set up. I want a smooth ride, and I don't particularly want to pay too much.

With the -5's, I've heard that unless you want a ridiculous ammount of powerm, they lag and the drive can be uncomfortable. This seems a shame because a lot of people have also told me to get them. I also have noticed that I might be able to get some quite cheaply.

The -7's are meant to be really close to the standard turbos which seems strange, because I would have thought I could run a lot of boost with them quite safely and I can't with the current set up.

I've heard really good things about the GT-SS's but they also cost a fair bit.

I was wondering.....

How smooth is the ride with the -5's, especially with my power requirements?

How limited are the -7's?

And, how much better are the GT-SS's considering the price?

I can't afford 2530's

Any help would be great because I can see positives and negatives in all the setups so far.

Cheers!

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jantolis Proficient

jantolis

Posted
Posted
Hi there,

I have almost finished rebuilding my rb26dett motor with forged pistons, metal head gasket etc, and I am now on to replacing the turbos. The problem is I am not sure which ones to get. I am down to the usual three options......

Garrett 2860 -7's

Garrett 2860 -5's

&

HKS GT-SS's

I do not want more than 300kw's at the wheels with my set up. I want a smooth ride, and I don't particularly want to pay too much.

With the -5's, I've heard that unless you want a ridiculous ammount of powerm, they lag and the drive can be uncomfortable. This seems a shame because a lot of people have also told me to get them. I also have noticed that I might be able to get some quite cheaply.

The -7's are meant to be really close to the standard turbos which seems strange, because I would have thought I could run a lot of boost with them quite safely and I can't with the current set up.

I've heard really good things about the GT-SS's but they also cost a fair bit.

I was wondering.....

How smooth is the ride with the -5's, especially with my power requirements?

How limited are the -7's?

And, how much better are the GT-SS's considering the price?

I can't afford 2530's

Any help would be great because I can see positives and negatives in all the setups so far.

Cheers!

I just got some -7's put on last week on friday. They are the same spec as the GT-SS turbos. They have a bigger turbine housing and the same compressor as the standard turbos. I noticed a fair bit of difference in power still. Not anythying like 100rwk or anything but more. Lag is almost the same except it's alot smoother than the standard turbos. Not so much nothing, nothing, nothing then power.

I've heard -5's are laggy aswell but mechaninc said they are great to get more horsepower and wanted me to get them but i didn't want them. So if you want more horsepower get the -5's if you want better response get -7's.

Snowman Grand Master

Snowman

Posted
Posted

-7's is what you want but you'll need to get some 1.2bar actuators to go with them. (they come standard with the -5's and the GT-SS I think but not with the -7's).

There are no -5's left anyways for god knows how long.

But guys are making 340+ kw's on -7's and built engines (with 100RON fuel) so just run less boost and you'll have exactly what you want with a nice responsive ride.

cactu5 Enthusiast

cactu5

Posted
  • Author
Posted
-7's is what you want but you'll need to get some 1.2bar actuators to go with them. (they come standard with the -5's and the GT-SS I think but not with the -7's).

There are no -5's left anyways for god knows how long.

But guys are making 340+ kw's on -7's and built engines (with 100RON fuel) so just run less boost and you'll have exactly what you want with a nice responsive ride.

Thanks Snowman,

I've also heard that I'd also need to get some gaskets to go with the -7's before fitting. So what is the overall extra cost with the -7's that I can get for $2490 after adding actuators and gaskets to the price?

because I can get GT-SS's with gaskets and apparantly these actuators for about $3100 I think.

jantolis Proficient

jantolis

Posted
Posted
-7's is what you want but you'll need to get some 1.2bar actuators to go with them. (they come standard with the -5's and the GT-SS I think but not with the -7's).

I think the SS's have 1 bar actuators aswell.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Yep

-7 or GT-SS, simple as that for the 300rwkw region.

There is loads of info about both turbos, take the time to search.

IMO the GT-SS by the time they are landed works out almost the same as buying the Garretts locally + gaskets/actuators etc etc.

So take whichever you want as they are near enough to the same anyhow.

cactu5 Enthusiast

cactu5

Posted
  • Author
Posted
Yep

-7 or GT-SS, simple as that for the 300rwkw region.

There is loads of info about both turbos, take the time to search.

IMO the GT-SS by the time they are landed works out almost the same as buying the Garretts locally + gaskets/actuators etc etc.

So take whichever you want as they are near enough to the same anyhow.

Thanks mate,

I was wondering if that would be the case.

Bumblebee Experienced

Bumblebee

Posted
Posted

Trust turbos r excellent.. unless u argue with ppl who dont like it.. i dont like them.. basically because theyre not ball bearing or water cooled.. but ive got a few friends who run the trust gear and i gotta say.. its pretty impressive stuff.

I might pick up a pair of 517z's for myself.. and ive seen a few dynos of them capable of around 340kw which is pretty impressive for a tiny low mount turbo/s :D

femno Grand Master

femno

Posted
Posted
There are no -5's left anyways for god knows how long.

Yeah how bs is that....all i can say is i picked a good time for a rebuild. :D

Fingers crossed they arrive soon..

Yeah back on track check out the rb26 turbo upgrade thread, theres plenty of people making your target power with a range or turbos.

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