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XR6 Turbo 5spd power limitation 

 

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 Post subject: XR6 Turbo 5spd power limitation
Posted: Thu Oct 29, 2009 8:43 pm 
Oompa Loompa
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Location: Lilydale
VIC, Australia

I recently purchased a 03 Ford Falcon Xr6 turbo 5spd manual. And have been looking into what options are avaliable for me and what my best option for the next step or couple of steps to take would be. So far ive just cut in the F6 intake for my airbox.

I happened to be speaking to someone the other day who does alot of work on xr6 turbos and he told me due to the fact i have a 5spd in my car im probably limited at about between 260-280rwkw and i could have 300rwkw if i drove it gently.
He told me anything above 300rwkw no matter how much i attempt to get the 5psd strengthen it will die. He said that the 5spd gearbox is just not capable of handling above 300rwkw and id need to upgrade to a 6spd if i was looking at going for more than 300rwkw.

But ive seen on here and in a few other places theres quiet a few pplz running 300rwkw or more on 5spd xr6 turbos.

So just wondering if anyone would like to put there 2 cents worth into what ive mentioned above because im very interested to hear what fellow xr6 turbo owners have to say about this matter.
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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Thu Oct 29, 2009 11:16 pm 
Getting Side Ways
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Ride: ef fairmont turbo

Power: 213 rwkw

Location: melbourne
VIC, Australia

mate you can run 400rwkw in a 5sp manual.. but dont expect it to last longer then a gold fishes memory. if i were you, just get a decent 3 inch exhaust and give it a flash tune, the tune will give you a more liner torque spread, so the power is more constant so less stain from boost on the box, that alone i think is the wisest modification for you to do

 

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96 EF FAIRMONT
Garrett gt40turbo, iceman plenum, ported head, turbo cam, double valvesprings, 023 fuel pump, 36lb injectors 4' cat, 4' dump, 2.5 exhaust, build bottom end, hypertonic pistons rods & rods, king bearings, j3. c10 3500 stall
232rwkw@4psi

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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Fri Oct 30, 2009 12:26 pm 
Getting Side Ways
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Ride: 1993 EB XR8

Location: BrisVegas
QLD, Australia

The problem with the 5 speeds is that the case flexes and strips 3rd gear. You can get aftermarket cases, but by that stage it just isn't worth keeping the 5 speed. A mate is doing the T56 conversion into his BA XT, so far prices are: T56 - $2365 Brand new (sourced away from Fraud/MalWood), Tailshaft modified to suit the T56 and removing the rubber dampner - $685, mount for the T56 - $100 (trade price @ Ford) the clutch is useable in the 5 and 6 speeds.

 

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ILL60 - EF XR8, Sunroof, Ticky Kit, 19x8.5/19x11 TE37's, 347, AFr185's, TFS BoxRcustom converter, Hurst Quarterstick, huge billet cam.

51TER - DL LTD. Stock.

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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 5:59 pm 
Parts Gopher
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Age: 30

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Ride: AUIII XR6T, Land bruiser

Location: Townsville
QLD, Australia

The good old T5, I havn't got a BA but i have AuIII XR6 that i've thrown a turbo and am still running a T5. Well I was, i've blown it up for second time last month. The car made 226kw 674nm and threw the stanard box apart in about 2 weeks (3rd gear), this is back in july 08. I got another box out of an XG ute and striped all the internals out of it and put them on my main shaft ( Au main shafts and selector housings are longer). no new bearings didn't have a job at this time, back yard rebuild and i only striped 2nd gear last month the car now makes about 285rwkw and 780nm, AU's are lighter than BA-BF's so i wouldn't expect them to hold up any more than 250rwkw. I also had a 10.5 inch cusion paddle button clutch and alloy flywheel made up and fitted about 3 months ago.
I drive my car pretty hard as it is only my thursday night and weekend warrier, I have a land cruiser for every other day. I'm now lookin into C4 auto Or T56 conversion. hope this helps, that is my exprience so far. Keep boosten

 

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AUIIIXR6, Ultra low king springs, monro shocks, 19" of Chrome XHP Jets ,Snort Stage 4 turbo mainafold, GT 42r turbo, 3" stainless cooler piping, Haltech E6X, 42lb injectors,10mm Topgun leads,rising fuel reg, Bosch 040 fuel pump15psi = 283rwkw 802nm of tyre shreding touqe and a 12.6@118mph.

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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 6:13 pm 
Oompa Loompa
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Location: Lilydale
VIC, Australia

ohk thats interesting to hear.
ive been assured the 5spd in my BA will easily do up 260-270rwkw but ne thing above that im pushing it depending on how i was to drive.
As people hav told me theyve had people running 300rwkw on 5spd manual and its lasted 12 months because they havnt driven it hard.

I wont be pushing my 5spd to that limit tho, cuz i dnt see any point having that much power if i cant even put my foot down.

but ive been assured that the gearbox will hold up fine at 260-270rwkw
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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 6:44 pm 
Getting Side Ways
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its all how you drive i guess but even babying it it will eventually break under a large amount of power.
with a bit of thrashing the 5spd and the 4spd have been known to give way under stock power in these cars.

ive got a 4spd xr6 turbo so i know your pain, the 4spds seem to hold up abit better though

 

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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 6:49 pm 
Oompa Loompa
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Joined: 16th Jul 2008

Ride: Probe

Location: Lilydale
VIC, Australia

agreed with that.
youd have to really thrash it though to blow up a 5spd on stock xr6 turbo.
Like i occasionally put my foot down when pulling onto busy hwy or something.
But i guess people who basically everywhere they drive it and from everytym they stop flatten it off the line would break a 5spd or 4spd on stock xr6 turbo.
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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 7:05 pm 
Getting Side Ways
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Age: 29

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Joined: 30th May 2005

Ride: 1993 EB XR8

Location: BrisVegas
QLD, Australia

Bassy500 wrote:
agreed with that.
youd have to really thrash it though to blow up a 5spd on stock xr6 turbo.
Like i occasionally put my foot down when pulling onto busy hwy or something.
But i guess people who basically everywhere they drive it and from everytym they stop flatten it off the line would break a 5spd or 4spd on stock xr6 turbo.


I know a guy who killed one in an EL GLi with an exhaust and diff gears, another mate killed 3 with 200rwkw. ken_xt has almost killed his, in a STOCK BA XT. They are weak as. Get a 6spd!!!

 

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ILL60 - EF XR8, Sunroof, Ticky Kit, 19x8.5/19x11 TE37's, 347, AFr185's, TFS BoxRcustom converter, Hurst Quarterstick, huge billet cam.

51TER - DL LTD. Stock.

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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 7:12 pm 
Oompa Loompa
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Joined: 16th Jul 2008

Ride: Probe

Location: Lilydale
VIC, Australia

theres quite alot of people who own 5spd xr6 turbos running upwards of 250rwkw who have never had a problem with there gearbox.
its all about how u drive and change gears
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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 7:39 pm 
Getting Side Ways
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Age: 29

Posts: 4182

Joined: 30th May 2005

Ride: 1993 EB XR8

Location: BrisVegas
QLD, Australia

Either avoid 3rd gear, or don't bring power on in 3rd and it will be fine. As soon as power comes on in 3rd, it's all over

 

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ILL60 - EF XR8, Sunroof, Ticky Kit, 19x8.5/19x11 TE37's, 347, AFr185's, TFS BoxRcustom converter, Hurst Quarterstick, huge billet cam.

51TER - DL LTD. Stock.

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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 7:47 pm 
Oompa Loompa
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Joined: 16th Jul 2008

Ride: Probe

Location: Lilydale
VIC, Australia

is 3rd the weak link in that gearbox?
lol that would kind of unavoidable when on the drag strip
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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 8:28 pm 
Getting Side Ways
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Ride: Xr6 Turbo

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VIC, Australia

mate i have a 5spd and have 3.7 at the wheels. box was rebuilt and when talking to the builder said its is more of a old wifes tale. he builds just as many 6 spds as 5spds.

 

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Previous cars


1995 ef futura - nothing special
2003 xr6 turbo 5 -speed 307rwkw

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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 9:05 pm 
Oompa Loompa
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Joined: 16th Jul 2008

Ride: Probe

Location: Lilydale
VIC, Australia

out of curiosity how much did it cost you to rebuild ur T5?
and who did that for you?
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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Sun Nov 29, 2009 9:10 pm 
Getting Side Ways
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Age: 29

Posts: 4182

Joined: 30th May 2005

Ride: 1993 EB XR8

Location: BrisVegas
QLD, Australia

lil_lincoln wrote:
mate i have a 5spd and have 3.7 at the wheels. box was rebuilt and when talking to the builder said its is more of a old wifes tale. he builds just as many 6 spds as 5spds.


Not an old wives tale. 5 guys I know have blown 5 speeds. Two now have T56's, with out a drama, one of those got a powerskid run at PC19, and smoked 2nd,3rd AND 4th gears with no brake and the box lasted.

3rd in a T5 is actually a thinner gear than 5th in a T56!
Bassy500 wrote:
is 3rd the weak link in that gearbox?
lol that would kind of unavoidable when on the drag strip


Yes, 3rd is the weakest link, the case flexes, and 3rd gear strips. The box it self is a ticking time bomb.

 

_________________

ILL60 - EF XR8, Sunroof, Ticky Kit, 19x8.5/19x11 TE37's, 347, AFr185's, TFS BoxRcustom converter, Hurst Quarterstick, huge billet cam.

51TER - DL LTD. Stock.

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 Post subject: Re: XR6 Turbo 5spd power limitation
Posted: Mon Nov 30, 2009 11:23 pm 
Parts Gopher
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Age: 30

Posts: 69

Joined: 21st Mar 2008

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Ride: AUIII XR6T, Land bruiser

Location: Townsville
QLD, Australia

The old wive's tale is true for a stanard car these t5's are alright, i'll put it this way my car makes roughly 170kw at the fly stanard, and i'm only guessing but i reckon i'm makin about 320kw at he fly now, so the box really isn't to weak, even though i've blown mine i had given it a hard life for the last 12 months. skids, tuning (on road), racing. there not that bad of a box IMO. But if you push you car around that 300kw mark it needs to be up graded they just won't handle it when you do put you foot down to beat that clubby one day. lol, T56 or build an auto if you want to run numbers down the strip.
Keep Boostin

Chris.

 

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AUIIIXR6, Ultra low king springs, monro shocks, 19" of Chrome XHP Jets ,Snort Stage 4 turbo mainafold, GT 42r turbo, 3" stainless cooler piping, Haltech E6X, 42lb injectors,10mm Topgun leads,rising fuel reg, Bosch 040 fuel pump15psi = 283rwkw 802nm of tyre shreding touqe and a 12.6@118mph.

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