"Cheap" bolt on turbo on RB25DET NEO

[Kapr]

Hi. Iam looking for some "cheaper" bolt on turbo on RB25DET NEO.

I do not want "big" power just better reliability than the stock turbo which is "fot now" good but is old and i do not think it has "easy" life.

One the Skyline here running some "temu" china Turbo but i dont trust those...

Thanks!

 

[MBS206]

HyperGear. Just get a high flow of the stocker. Good, reliable, and should bolt on.
Yes it will want things like a retune once done, so you need to factor this in to your spend too.

[GTSBoy]

HG's high flow is not "bolt on".

The core is shorter, moves the comp cover rearwards in the engine bay. means you have to deal with the inlet plumbing a little bit.

This is probably something to consider with every "bolt on" turbo anyway.

[Kapr]

Bummer...yeah i "need" something to "ease" up the work and for my driving it would be enough. 

 

Iam counting the tune "without" turbo. I do not mean "cheap" like something from Temu around 200 USD,
"Cheap" is something around 1000 USD? 

[GTSBoy]

The HG high flow is excellent, and costs about the $$ you're talking about. But it, and probably every other highflow, uses a diffeent core than the original turo, and the original Hitatchi core is quite long. So, I think it is inevitable that there is likely no such thing as a highflow that just "bolts on" with no other effort required.

And the same is likely true for HG's outright replacement "bolt on" turbos (the ATR things). And the same is likely true for anything similar from elsewhere.

I have no idea if the cheap Chinese/Taiwanese complete turbos from eBay/Temu/etc are as bolt on as they claim. I mean, they claim the bolt onto the NAs as well as the turbos, and we know that can't be "bolt on". But it wouldn't matter because I'm not buying a $169 4 psi turbo for anything other than a paddock basher.

[Murray_Calavera]

1 hour ago, GTSBoy said:

So, I think it is inevitable that there is likely no such thing as a highflow that just "bolts on" with no other effort required.

This is an option for 100% bolt on, the GCG high flow - 

https://gcg.com.au/turbo-charger-upgrade-skyline-gtst-2iu-xtrgts-s1.html

Also, I'm pretty sure hypergear does a high flow that is 100% bolt on, it just doesn't make as much power as their bigger high flows. 

7 hours ago, Kapr said:

yeah i "need" something to "ease" up the work and for my driving it would be enough.

Even if you get a hypergear turbo that requires you to chance the intake piping, it is a really simple modification. It can be as simple as a piece of silicon hose and you pop a filter on the end. It doesn't have to be some crazy pie cut titanium work of art intake pipe. 

If you have the ability to swap the turbo yourself, you would be able to sort the intake piping out. 

[Dose Pipe Sutututu]

1 hour ago, GTSBoy said:

I have no idea if the cheap Chinese/Taiwanese complete turbos from eBay/Temu/etc are as bolt on as they claim

They are, a good friend of mine bought one to replace his blow factory turbo, running a Toshi Tune reflash. Just use their supplied water/oil lines and you're good to go.

At the time, they were like $900 delivered.

[MBS206]

2 hours ago, Dose Pipe Sutututu said:

They are, a good friend of mine bought one to replace his blow factory turbo, running a Toshi Tune reflash. Just use their supplied water/oil lines and you're good to go.

At the time, they were like $900 delivered.

How many days/weeks/minutes did it last if it was a Temu turbo?

[Dose Pipe Sutututu]

1 hour ago, MBS206 said:

How many days/weeks/minutes did it last if it was a Temu turbo?

Still on his car!

He just runs 1 bar of boost through it though - he's keen on putting injectors, Nistune and winding a bit more into it. I'll report back  

[GTSBoy]

57 minutes ago, Dose Pipe Sutututu said:

He just runs 1 bar of boost through it though - he's keen on putting injectors, Nistune and winding a bit more into it

It must be as smoky as all f**k, running 1 bar with no tune. Maybe it's out of injector!!

[Dose Pipe Sutututu]

8 minutes ago, GTSBoy said:

It must be as smoky as all f**k, running 1 bar with no tune. Maybe it's out of injector!!

It's got a Toshi reflash on it, on song with my portable wideband attached, it shows about 11.7

We did knock out 2x degrees off the CAS too. He's been driving it for years!

[GTSBoy]

38 minutes ago, Dose Pipe Sutututu said:

It's got a Toshi reflash

Clearly I have the goldfish memory going at 100% today. I even saw that you wrote that in the 1st post!

[joshuaho96]

20 hours ago, GTSBoy said:

HG's high flow is not "bolt on".

The core is shorter, moves the comp cover rearwards in the engine bay. means you have to deal with the inlet plumbing a little bit.

This is probably something to consider with every "bolt on" turbo anyway.

If this is the case is there something more that could be done? Looks like the OEM manifold is divided so how much more effort could it be to adapt a twin scroll internally gated turbo? Even if the wastegate is suboptimal at least you get decent benefits at low RPM before the wastegate opens up.

[Dose Pipe Sutututu]

49 minutes ago, GTSBoy said:

Clearly I have the goldfish memory going at 100% today. I even saw that you wrote that in the 1st post!

haha all good, also he took it out to Luddenham last year with me, on a 30+ degree day too. 

Car did not explode.

[GTSBoy]

35 minutes ago, joshuaho96 said:

If this is the case is there something more that could be done? Looks like the OEM manifold is divided so how much more effort could it be to adapt a twin scroll internally gated turbo? Even if the wastegate is suboptimal at least you get decent benefits at low RPM before the wastegate opens up.

The stock manifold is "mostly" divided. The divider actually has a notch cut out of it where it would meet the divider on a twin scroll housing. I have no idea why. But whatever the reason, it would cause some cross talk when used with a twin scroll housing.

People do put twin scroll housings onto that manifold. But I'm of the opinion that proper twin scroll internal gating is...not really possible at this scale. You'd be throwing good effort (ie $$) after bad, when you really should be doing something else.

Notwithstanding that.... I am not sure what the idea that you are floating has to do with the difference in comp cover position caused by the highflow using a shorter length core than the stock Hitachi one. Can you clarify what you meant?