Anyone Tried GT3540R on RB30DET .

[B-Man]

Hey - some nice big turbos going on there.

I myself would never go bigger than the HKS3040 (on a 2.5L) - having driven for the last 6 months with one - it's right at the top end for my taste in driving - Although I do like winning Dyno comps with it.

At the drags, it hits so hard, its either bog down or wheel spin. But you sort of get used to it - I am still such a crap launcher. To use all that power properly at the drags, I would need to change my whole suspension setup and run drag radials for launch ability - And then, I would prolly break something else - (driveshaft, diff, gearbox)

On the circuit - the only place is used all 330rwkw is down Eastern Creek straight -everywhere else I am in 3rd gear and use low boost.

Anyway - each to their own.

Good luck with the projects and look forward to seeing some results.

BTW - Cameron - you strut brace is going to get VERY hot

[cameron]

BTW - Cameron - you strut brace is going to get VERY hot

Yep, Heat shield is still being made up for the turbo and will be going on before running high boost level's.

Same for the Power steering fluid, heat wrap or shield.

Jun

[dnb]

just out of interest how much did you guys pay? mine was $2200 with the vband. i have seen them cheaper though

[discopotato03]

Skyrine Dave I would be very suspicious of a flush 4 bolt exhaust housing , does not sound like propper GT style housing . If its a bastardised Euro flange T4 housing it will cost you performance . RS500 tried it and flicked it for the genuine housing , went MUCH better . All the ext gate GT housings should have the extended 4 bolt connical discharge plus the volute and nozzle shape are made to suit the paddle bladed UHP turbine .

Cheers A .

[Skyrine-Dave]

errrr thats what i meant... its got 4 bolts and a big f-off circle hole in the middle.

its a GT35R done and done

like this

[cameron]

$2000 came with flange that had to be welded onto dumpipe - 4 bolt pattern & gaskets

Discopotato03 our turbo exhaust housing has a flanged up funnel to the part were the dumpie bolts on, Is this a geniune GT housing ?

[dnb]

ive seen em go for like $2900 also. man thats some healthy mark up

[B-Man]

Here's some pics of my HKS 3040 - pulled apart, if your interested.

[B-Man]

[czy18e]

Whats the diff between xtr 3040,gt3040 or a hks 3040?

Who is the best value for money?i mean which makes the most power for least money ratio?

And Let me get this right...

A gt35 is a 35 front and back? a gt 3040 is a 40 front 30 back ?

So which is laggier like why doesnt it just cancel out and make the same power and lag??

All .82 rear housing.

[Bl4cK32]

Lets try not to get into a "Garrett vs. HKS" thread mk. II.....

People are discussing size, and more importantly the rb30det

I dont think lag would be much of an issue on the rb30det anyways ...

[Clint32]

B-Man looking at your pics it appears to be identical to my std garret 3040 or whatever people call them part no SB8006, the wheels are the same size and profile, the comp housing is the same, mine is using a 0.82 exh housing so its a bit hard to compare, but if anything thats the only difference, the shape of the exhause housing. what power are you making with that thing with what boost and other mods, cheers clint

[discopotato03]

Czy18e , I think its a bit like changing your final drive ratio from 4.1 to 3.1 and expecting the same acceleration . Same torque pushing greater load giving lazy acceleration . The principle of leverage ie the greater the radius the greater the torque for a given input works with radial inflow turbines as well .

Does anyone know if Garretts GT3040R is available in 50 compressor trim ?

I really would like to see back to back tests with the GT30R (3037) 56 trim and both GT3040's ie Garrett's 56 trim and HKS's 50 trim . I'm sure the turbine inlet pressure vs boost pressure would be equal with the 30R , higher with the 56T 3040 and a little better with the 50T HKS version .

[B-Man]

B-Man looking at your pics it appears to be identical to my std garret 3040 or whatever people call them part no SB8006, the wheels are the same size and profile, the comp housing is the same, mine is using a 0.82 exh housing so its a bit hard to compare, but if anything thats the only difference, the shape of the exhause housing. what power are you making with that thing with what boost and other mods, cheers clint

330kw at the wheels Clint (RB25).

I was at a Dyno Comp recently and there was a RB30DET there with a Garret GT35 on it - Managed 319 at the wheels. Was talking to him afterwards and he says that there is more in it than that.

Cheers,

[MonstaS4]

Does anyone know if Garretts GT3040R is available in 50 compressor trim ?  

I really would like to see back to back tests with the GT30R (3037) 56 trim and both GT3040's ie Garrett's 56 trim and HKS's 50 trim.

Dosn't the Garrett GT3040 (SB8006/SB8006A) have a 64 trim?

[discopotato03]

I'm pretty sure its a 56 trim GT40 compressor wheel .

[DoughBoy]

If you have a look around at some SAU members car's you can make a pretty broad assumption:

A camm'd RB25 will generally make ~330rwkw at ~18psi, this is flowing ~55lbs/min of air. The benefits of running the HKS 3040 (82mm) comp wheel doesn't come into play as it's already maxed the capacity of the compressor without needing the raised boost ceiling of it's comp map. Ideally the HKS GT3040 is for smaller motors that need the added boost to max the compressor, or in twin form at ludicrous boost pressures (Heeelllooooo 3 bar)

The "true" Garrett GT3040 turbos use a GT40 comp wheel that flows ~65lbs/min w/56trim comp wheel - this is the SB8006/SB8006A that Ray Hall has on his website. Should be good for another ~60rwkw.

I don't see why the GT35R turbo wouldn't make 400rwkw in RB30 form, with a properly "built" motor.

As reference material check out BMan vs Buster vs Steve vs that other dude in perth with one (sorry mind blank). Pretty much identical curves for different turbos that all max at ~55lbs/min.

[B-Man]

GTS-Vspec (Paul).

DB - Do you really think it the compresor that is the limitting factor ?? I was thinking about this and if boost is going up but no more power , then doesn't this mean there is a restriction somewhere else (eg Zorst / head) - So if restriction was removed the extra boost would result in more flow ??? Just add fuel , means more power.

[DoughBoy]

If you have a temp sensor in the intake you'd be able to see alot more about what's going on. As a dollar per hp thing, at your level it would be cheaper to get a new core ($1300) vs porting the head ($1300+). Even if you port the head you're still going to bounce off the compressor limit, although it would probably make more average power + torque... so goes back to what are you wanting out of your setup? Even changing the exhaust would make a bit more power, but that loud drone can be very very very annoying (I prefer driving the stock R33 vs the modded R33).

I think there is probably more in it, but the $ to hp is not worth it.

[discopotato03]

B Man , simple test will tell the story . Run two boost gauges , one recording inlet manifold pressure the other exhaust manifold pressure . I bet I know which goes higher .

Cheers A .