Ford Xr6 Turbo

[gts-4 dreamer]

Just curious as a fairly reasonable offer has come my way.

What are your experiences with this turbo on 25 ?

i can guess at what rpm range it kicked in by the size of the thing, but when did it spool on your application ? what relevant mods did you have that may have increased / decreased this over stock internals + cam gears assuming split front dump and complete 3" exh?

sizing for my application it is a little large (increasing lag understandably) with a target of a max 250, 220-250 is my goal which is well short of the power claims by garret.

Is the version of the turbo released on the ford the same as sold by garret literally ? steel wheels etc double bb cartridge ? same as the GT3540 aka GT35R from garret ??

apparently they are t3 flanged (i haven't seen the thing and personally inspected yet but soon) which would suit my exhuast, are certainly large enough for my application. assuming mod's to the exhaust manifold anything else req changing bar water an oil lines ?

how hard was it to source an appropriate exhaust mani or was it all custom ?

Im having a hard time with searching at the moment on the turbo of the ba/bf xr6's i keep getting hte damed car specs an i want the compressors specs... driving me mad...

[Cubes]

You'll be looking at it coming on hard close to 4.5-5k.

You can buy the .63 int gate housing from garrett but they are worth around $500. So s/h xr6t turbo for 1k + 500.. Your really better off buying a newy for a couple hundred more.

Its a very large turbo for your goals. Don't do it.

[Wheezy]

Interestingly enough the new internally gated GT3582 from garrett has a bit of a donkey. Aparently the design doesnt flow the gasses well enough to efficiently get them out of the wastegate hole. This is from one report from a close friend. I say go external gate .63 (You can get these IIRC) and be a man

[Birnie]

A few have done it

Someone did a write up a year or 2 ago.

Do a search and you should find something.

Maybe beerBaron???? prolly wrong..

[Birnie]

Nah, it was 'fatz' but i think i was confused caused he used to have a pic with the VB on top of his car.

He had the turbo on the RB26 and found it laggy.

If you only want up to 250rwkws, get a HKS2535 or a highflow

[Cubes]

Interestingly enough the new internally gated GT3582 from garrett has a bit of a donkey. Aparently the design doesnt flow the gasses well enough to efficiently get them out of the wastegate hole. This is from one report from a close friend. I say go external gate .63 (You can get these IIRC) and be a man

Not sure about the .63 but the GT3540 .82 internal gate flows plenty well. Dangerman4 pushes 24psi through his gt3540r .82 IW using a pfc ebc on the same dyno I run on. No spike, no drop; holds boost ruler flat.

So definitely not a donkey.

I do suspect the .63 with the IW may have issues as the smaller the turbine housing you go the larger the wastegate required. BUT, thats only speculation.

Its also interesting to note garrett have revised their IW housings since making the ford version. The new non-ford IW garrett housings completely seperate the exh gas from the wastegate and overall it is slightly better designed. I haven't measured both wastegate flaps so I can't comment on any size differences.

[STATUS]

Not sure about the .63 but the GT3540 .82 internal gate flows plenty well. Dangerman4 pushes 24psi through his using a pfc ebc on the same dyno I run on. No spike, no drop; holds boost well.

So definitely not a donkey.

I do suspect the .63 with the IW may have issues as the smaller the turbine housing you go the larger the wastegate required. BUT, thats only speculation.

Its also interesting to note garrett have revised their IW housings since making the ford version. The new non-ford IW garrett housings completely seperate the exh gas from the wastegate and overall it is slightly better designed. I haven't measured both wastegate flaps so I can't comment on any size differences.

Yeah wheezy i know the car you are talking about the car had uncontrollable boost spiking and creep due to bad flow throught the wastegate, whilst modding this to a bigger hole would have fixed the issue is was beside the point. The turbo was reccommended by a garrett distributor to a reputable workshop as a bolt-on (ish) low mount upgrade for R33... it was not and hence they returned it and supplied at gt35 which has since been high mounted and externally gated.....once bitten twice shy.

Edited March 30, 2007 by URAS

[Cubes]

Yeah wheezy i know the car you are talking about the car had uncontrollable boost spiking and creep due to bad flow throught the wastegate, whilst modding this to a bigger hole would have fixed the issue is was beside the point. The turbo was reccommended by a garrett distributor to a reputable workshop as a bolt-on (ish) low mount upgrade for R33... it was not and hence they returned it and supplied at gt35 which has since been high mounted and externally gated.....once bitten twice shy.

How was the dump designed (split or open bell mouth)?

Exhaust manifold?

Interesting one car has perfect boost control yet another doesn't.

Initially dangerman4 did have issues with boost tailing off which was related to another tuners lack of experience with the pfc ebc.

[R31Nismoid]

If you only want up to 250rwkws, get a HKS2535 or a highflow

Couldnt agree more. Nail on the head.

A 600-700hp turbo is far to big for 250rwkw.

Your better off with a high flow that sits 450hp or so.

Blistering response, massive mid range... it'll be a true street weapon that will provide more than enough fun

[Abo Bob]

Have a look for Bass Junky's dyno sheet if you want 250rwkw so you can understand phat.

[Al]

Here is my dyno using a HKS GT-RS 400hp turbo (Slide has an equivalent turbo for much cheaper).

Ignore the red line as the graph is a comparison from an exhaust change. The blue line was my final result with the new exhaust, but i still think there is more in it (mainly mid-range) as i currently still run a "truck core" fmic.

My engine had other mods, but i think 250rwkw is definately acheivable on a std RB25

[STATUS]

Here is my dyno using a HKS GT-RS 400hp turbo (Slide has an equivalent turbo for much cheaper).

Ignore the red line as the graph is a comparison from an exhaust change. The blue line was my final result with the new exhaust, but i still think there is more in it (mainly mid-range) as i currently still run a "truck core" fmic.

My engine had other mods, but i think 250rwkw is definately acheivable on a std RB25

easily i know of at least 4 that have been running over 300rwkw for 2years.

[bazr33]

i will be installing a gt3540r .84 rear, on my r33 gtst soonish, so i will be able to give some more info as to how it goes.

My previous turbo was a r33 hiflow plain bearing, on 18psi made 237rwkw, so the gt3540r im guessin is going to be fun haha. could possibly run into a tree, but i will let ya know when i head out.

i have on the car at the moment:

PFC

AVCR

FMIC

Walbro fuel pump, fuel reg, 555cc inj

Z32 afm

pod filter

so i'll see how it goes, i know it will be laggy, but shit when it hits 4400rpm, wooohooo shake and bake.

I am considering cams later on, if my car doesnt blow in the meantime, but if it does blow then obviously a whole heap of other stuff.

let yas know what happens.

[Devils_Advocate21]

better off with either gt30r or gt3040r versions of the turbos atleast the lag wont be such a killer well maybe on the 30r but the 3040r well it speaks for itself

[fatz]

yea the 1.06 is a tad laggy best ona 3 litre bottom end

but when i say laggy on a rb26 full boost at 4k so that was 4.5 k of play time

made 300rwkw at 1 bar

[khunjeng]

been runnig between 260-270 for a while now..not laggy at all...goes like a weapon..but I have all the rest to make it connect to the ground...no use having big turbos and stock everything else. plan my friend.

[Marco-R34GTT]

Couldnt agree more. Nail on the head.

A 600-700hp turbo is far to big for 250rwkw.

Your better off with a high flow that sits 450hp or so.

Blistering response, massive mid range... it'll be a true street weapon that will provide more than enough fun

Q1: Would that turbo (the HKS2535) be suitable with stock internals if pushing for between 260kw and 280kw? Or is that about the time you start thinking of strengthening the motor (RB25neo here).

Q2: How much would the HKS turbo (and fitted) set one back? approximate figure is ok...

Edited April 19, 2007 by Marco-R34GTT

[Devils_Advocate21]

hks 2535 no good for 260 to 280 2835 or 3037 and higher in hks better brand plus turbos in that brand are well known in the 2500 and up bracket turbo alone then the lines well est 300 depends what and where you get, custom dump well another 600 for a good split dump/front pipe, fitted that can vary as well pends if you do it yourself, oh and the neo not sure on manifold setup theres the estimate for you

[Al]

HKS GT2535 will produce about 240-250 rwkw at about 17psi. In my mate's car not much more power gains were made with more boost

[mad082]

does anyone know what are the flanges on the xr6 turbo?

my mate has a dying bearing in his r33 and get get a brand new xr6 turbo from ford for $900 and is looking at doing that, but we are just trying to find out what flanges they are. i said he should go a slide highflow but it appears as if slide isn't making them anymore.