Outer Limits 4x4 Board

Just put my patrol on the dyno today and got 124hp @ 12psi and I want to know what other people have gotten.Mine is a 4.2 td with after market turbo. I just want to see if its about right for this motor.

td42t (no cooler) 149hp 12psi 690nm on 35mtz's tuned by brisbane dyno

Brisbane Dyno are now good mate there is no way to make that amount of power at the wheels out of 12 psi on 35s you need to go elsewhere for your dyno work. I am running mine unintercooled on 14 psi and made 130hp at the wheels with 35s

troy 76 thats numbers sound about right

troy i got 145hp @12psi, larger top mount, std turbo, 3in zorst on 33's. northside 4x4 did that for me. there good and tell no bullshit!

I don't own a TD42, but just doing some maths on it.

At 4000rpm, 12psi boost, 80% VE, 18:1 AFR no intercooler etc etc
I reckon you can do about 170hp at the crank (126kw).
At 2000rpm you'd get about 400Nm at the crank.

You can go richer (hotter) at the expense of smoke and a potential melt-down or fit an intercooler to get more.

So yeah, 124hp at the wheels is about right with a sensible tune.

KiwiBacon wrote:I don't own a TD42, but just doing some maths on it.

At 4000rpm, 12psi boost, 80% VE, 18:1 AFR no intercooler etc etc
I reckon you can do about 170hp at the crank (126kw).
At 2000rpm you'd get about 400Nm at the crank.

You can go richer (hotter) at the expense of smoke and a potential melt-down or fit an intercooler to get more.

So yeah, 124hp at the wheels is about right with a sensible tune.

124hp is about right but the Nm referred to is probably wheel torque ,no way is it flywheel Nm

Not a heck of alot of point comparing different dynos, too many variables.

Just look at the before and after results and then decide with the seat of your pants if your happy with the improvment... if not add more

Hear's a copy of mine after a couple of runs to reset the boost. running 13psi 3" Dump & exhaust with fuel adjustment.

DavePatrol wrote:Hear's a copy of mine after a couple of runs to reset the boost. running 13psi 3" Dump & exhaust with fuel adjustment.

WOW mine peeked at 3400 rpm. What was your exhaust temps like with 13psi.

ETU47 wrote:td42t (no cooler) 149hp 12psi 690nm on 35mtz's tuned by brisbane dyno

my turbo has been hi-flowed and the pump has been fucked with i will put dyno sheet up soon

ETU47 wrote:

ETU47 wrote:td42t (no cooler) 149hp 12psi 690nm on 35mtz's tuned by brisbane dyno

my turbo has been hi-flowed and the pump has been . with i will put dyno sheet up soon

If I may ask, how much does hi-flowing a turbo cost?

Troy76 wrote:

DavePatrol wrote:Hear's a copy of mine after a couple of runs to reset the boost. running 13psi 3" Dump & exhaust with fuel adjustment.

WOW mine peeked at 3400 rpm. What was your exhaust temps like with 13psi.

Exhaust temps were good thats why we didn't push it any higher, also they said it would use a lot more fuel for little gain.

So how many rpm does the km/h on that plot equate to?

KiwiBacon wrote:So how many rpm does the km/h on that plot equate to?

Not sure as I changed Diff Ratios from 3.9 to 4.3s soon after that Dyno run so it needs to get back on the Dyno to see what it's doing now.

The scale on that torque curve is out by a lot.
If the max power of 134hp is at 4000rpm then you're producing 236 Nm there. The graph shows 600 at that point.

But if you can work out the rpm you can get it more accurate than that.

tritontray wrote:

ETU47 wrote:

ETU47 wrote:td42t (no cooler) 149hp 12psi 690nm on 35mtz's tuned by brisbane dyno

my turbo has been hi-flowed and the pump has been . with i will put dyno sheet up soon

If I may ask, how much does hi-flowing a turbo cost?

x2 I am interested also.

I always gotta chip in...
SD33T with 15psi and boost comp mod


Thoughts KiwiBacon?

84mksd33t wrote:Thoughts KiwiBacon?

Looks quite good. Torque figures are about what they should be so no-one is playing silly-buggers with the dyno settings. Those SD33's must breathe quite well to provide 118kw on 15psi, it looks to do better at higher rpm than I expected.

KiwiBacon wrote:

84mksd33t wrote:Thoughts KiwiBacon?

Looks quite good. Torque figures are about what they should be so no-one is playing silly-buggers with the dyno settings. Those SD33's must breathe quite well to provide 118kw on 15psi, it looks to do better at higher rpm than I expected.

GT2860RS, Frozen Boost cooler, 3" intake piping, 3" exhaust.
We modified the spring in the boost compensator to allow more fuel earlier to get the GT28 to play nicer. Picked up 20rwkw from that.
Barely a puff of smoke either.

I would expect it to make even more power with a few PSI more boost.

Cheers!

KiwiBacon wrote:

84mksd33t wrote:Thoughts KiwiBacon?

Looks quite good. Torque figures are about what they should be so no-one is playing silly-buggers with the dyno settings. Those SD33's must breathe quite well to provide 118kw on 15psi, it looks to do better at higher rpm than I expected.

Looks like the guy who tuned knows what he's doing

Oh and credit to the owner for setting the intercooler up

84mksd33t wrote:

KiwiBacon wrote:

84mksd33t wrote:Thoughts KiwiBacon?

Looks quite good. Torque figures are about what they should be so no-one is playing silly-buggers with the dyno settings. Those SD33's must breathe quite well to provide 118kw on 15psi, it looks to do better at higher rpm than I expected.

GT2860RS, Frozen Boost cooler, 3" intake piping, 3" exhaust.
We modified the spring in the boost compensator to allow more fuel earlier to get the GT28 to play nicer. Picked up 20rwkw from that.
Barely a puff of smoke either.

I would expect it to make even more power with a few PSI more boost.

Cheers!

Aha, intercooled too. I didn't pick that earlier.

and from my experiance. Snap there goes a crank!!!. But that is pretty good from an old SD i must say!!

84mksd33t wrote:

KiwiBacon wrote:

84mksd33t wrote:Thoughts KiwiBacon?

Looks quite good. Torque figures are about what they should be so no-one is playing silly-buggers with the dyno settings. Those SD33's must breathe quite well to provide 118kw on 15psi, it looks to do better at higher rpm than I expected.

GT2860RS, Frozen Boost cooler, 3" intake piping, 3" exhaust.
We modified the spring in the boost compensator to allow more fuel earlier to get the GT28 to play nicer. Picked up 20rwkw from that.
Barely a puff of smoke either.

I would expect it to make even more power with a few PSI more boost.

Cheers!

Has anyone snaped a crank? I don`t know of one..

whats the drive line loss % in a gq with 35's. just a rough idea i was thinking as high as 30%

dynod with 35 with 4.3 diffs. 268hp. 760nm of torque.. 150cc of fuel, 30psi boost. with cooler. custom turned ehxaust mainfold, dump 3inch exhaust. hycloned, fitting laminova soon.. also just put new motor in with inlet plenum, enhaust bored out. twin valve springs. 100%balnced. HPC coated pistons.. custom made clutch.
i am still in run in perioid for new motor.

Has anyone snaped a crank? I don`t know of one..

lol iv been running 25 - 30 psi for 2 years now started at 20 psi 6 years ago on a motor with that had 300 odd k's onit now got 570 odd and still hauling it these things and rock solid as long as you service it me every 5000 with good oil

xenith wrote:

Has anyone snaped a crank? I don`t know of one..

lol iv been running 25 - 30 psi for 2 years now started at 20 psi 6 years ago on a motor with that had 300 odd k's onit now got 570 odd and still hauling it these things and rock solid as long as you service it me every 5000 with good oil

You would't be pushing more than 75rwkw though....

What oil do you use?
stock turbo?

We run plenty of hp and have never heard of broken crank!! Are u aware of any yourself of have you just been told by some one?Just interested because we have had a bunch of them from full rebuilds (black head na motors) to 300000k silvers all up over 170rwhp some up to 290rwhp and better.When someone says in my expirence they brake cranks and the crank in a td42 is SOOO strong I`d just like to know weather it was directly related or weather it was hearsay of caused by bad balencer or mabey failed bearing?Sometimes more power can make a weak point fail.I guess I`m respectfully asking for more info on your sourse.Def not having a go Also going a bit mad from being stuck around house(wet weather).






uote="84mksd33t"][quote="xenith"][quote]Has anyone snaped a crank? I don`t know of one..[/quote]
lol iv been running 25 - 30 psi for 2 years now started at 20 psi 6 years ago on a motor with that had 300 odd k's onit now got 570 odd and still hauling it these things and rock solid as long as you service it me every 5000 with good oil [/quote]

You would't be pushing more than 75rwkw though....

What oil do you use?
stock turbo?[/quote]

4.2 tdi gu ute standard on 285's with 3 inch exhaust and stock turbo


145 Hp @ 14 psi