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Upgraded/reconditioned GT2056V to "GT2060V" on Ebay

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Discussion starter · #62 ·
Kiwibacon said:
Bluenavara said:
The longer the manifold runners, the better the topend, at a slight expense of low range.
Click to expand...
Non turbo engine tuning doesn't directly cross-over to turbo engine tuning.
The exhaust of a non turbo petrol can be pulse tuned because at full throttle the gas temperature is roughly constant (controlled A/F ratio).
On a turbo diesel the exhaust temperatures and pressures are constantly changing, this makes the speed of sound (i.e. the pulse speed) in the exhaust gas variable and makes pulse tuning impossible.
Every modern automotive diesel uses the minimum volume type for early spool up and quick boost delivery.
Click to expand...
Actually I was referring to turbo petrol dragster setups as well. On a 2l engine you'd typically see about 70cm of primary runner length, before the collector.
Is there a reason why WOT Diesel A/F and therefore WOT EGT wouldn't be controllable to roughly the same degree as on a petrol? Ie, take advantage of that same pulse energy, albeit slightly cooler?

Anyways, we are currently indeed making up the shortest possible practical "nearly equal length" 4-1 mani.
 
#63 ·
Bluenavara said:
Actually I was referring to turbo petrol dragster setups as well. On a 2l engine you'd typically see about 70cm of primary runner length, before the collector.
Is there a reason why WOT Diesel A/F and therefore WOT EGT wouldn't be controllable to roughly the same degree as on a petrol? Ie, take advantage of that same pulse energy, albeit slightly cooler?

Anyways, we are currently indeed making up the shortest possible practical "nearly equal length" 4-1 mani.
Click to expand...
The problem on a turbo diesel is even if you get your exhaust temperature can be kind of stable the pressure can vary hugely through the revs as you move along the turbines operating curve.
So while you can match tube lengths to merge pulses evenly, it's pretty much impossible to know how fast those pulses are travelling at any point in time. You can still take advantage of the extra energy in those pulses, you just can't tune it for scavenging at a certain speed like you can with a non turbo petrol motor.
 
#64 ·
Update:- my big turbo mod is on the way ,but Lee (navara1) has fitted the hybrid. And what can I say but a big difference from just fpc tuning over his remap. He left number 11's all the way up the road. Torque is Defo up by a lot. Will be interesting on the dyno and mapped up to suit.
I've made mine and his new boost pipes for our big turbos. Also got us some good 3" stainless to make our straight through turbo pipes. Were going to try them with out any boxes for sound has adviced by them who know. Update again soon.
 
Discussion starter · #65 ·
Done-it-all said:
Also got us some good 3" stainless to make our straight through turbo pipes. Were going to try them with out any boxes for sound has adviced by them who know. Update again soon.
Click to expand...
Sound will be close to that of a big 225-250HP V6 twostroke outboard... :clappy:
 
#66 ·
Done-it-all said:
Update:- my big turbo mod is on the way ,but Lee (navara1) has fitted the hybrid. And what can I say but a big difference from just fpc tuning over his remap. He left number 11's all the way up the road. Torque is Defo up by a lot. Will be interesting on the dyno and mapped up to suit.
I've made mine and his new boost pipes for our big turbos. Also got us some good 3" stainless to make our straight through turbo pipes. Were going to try them with out any boxes for sound has adviced by them who know. Update again soon.
Click to expand...
Mate, how is the car from smoke?
What boost is lee now?(Not Lee his navara!)
 
#67 ·
JOHNVOR said:
What boost is lee now?(Not Lee his navara!)
Click to expand...
if you ask about Lee i bet he has a lot of boost in his smile now :mrgreen:
 
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#68 ·
Just finished making 2X 3" turbo back pipes for lee and myself. Where of to the pub for a carvery and drink. This modding business for your self sometimes drags. Next week we will be ready for tuning ? Is will they go bang ? Lol

Lee's turbo will kill mine if all stays together,all faith it will buddy lol. A tip for all owners of 2 year+ trucks has lee pointed out last year, on service get the sump taken off cleaned and resealed. They start to leak from the back. You have been warned twice now.
On the hybrid turbo should of done that years ago, does make a difference.
 
Discussion starter · #69 ·
Done-it-all said:
A tip for all owners of 2 year+ trucks has lee pointed out last year, on service get the sump taken off cleaned and resealed. They start to leak from the back.
Click to expand...
Couldn't agree more. Had to do this 6 months ago. Remember this is an aluminium block without a traditional metal sump gasket; so get out that tube of silicone!!!
 
#70 ·
Took navara1's engine out and swapped it with his built engine last night. The Borg turbo his over three times bigger than stock. Looks very nice and fits just perfect. Coded his new injectors and it started first turn. We fitted a high performance uprated twin plate clutch and solid flywheel. Has the hybrid slipped the clutch in 5th and 6th. Did spin wheels on private track around 90 mph cheap worth while upgrade. We manage to max the injectors out running 26psi of boost. Traction is a issue with a little rear end. Working on mine tonite and modding lee's boost pipe slightly for his new air intake. Good thing with the Borg turbo it has egt reading ports built in, hardest thing is sorting the injector timing and spray duration. Air is the other trial and error mix but once nailed on both trucks near the 400hp will be there on his and 330+ on mine. Torque will be stupid luck has it we can get tyres for the 22's under £80 after lots of searching. This weekend will be very interesting. Also the 3" turbo back pipe with out any box sound ok. This will change once fuel and boost is added. Time will tell if a silencer is needed. Keep up posted and once all completed figures and pictures/videos will follow. :thumbright:
 
Discussion starter · #71 ·
You managed to max the new bigger injectors already?

If the BW is 3 times as big as the stocker, you're not running the 6255 or the 6258, correct? You've therefore taken one of the big BW momma's, I assume.....

With big injectors/stroker pump, trimming the dutycycles/pressure for part throttle and cruise conditions will be the harder part than the WOT fuelling...
 
#72 ·
We maxed out the stock injectors. The big injectors will never be maxed out on this setup were doing.

The size of the turbo it's self is 3 times the size it's self over the stock turbo. (visual size) all BW are bigger than Garrett or other snails.

Yes setting the fuel will take time mate your correct.
 
Discussion starter · #73 ·
Done-it-all said:
We manage to max the injectors out running 26psi of boost.
Click to expand...
This sounds almost exactly like what we got from the earlier turbo flow calculations. At 26/27psi on both the GT28RS and the BW6255 would max out the stock fuelling, at a reasonable WOT AFR. That coincides with the edge of the airflow envelope for the GT28RS, but the BW6255/6258 can be taken to at least 36psi.

The BW's leave quite some room to grow.... :clappy:
 
#74 ·
Grow it will matey, our ic are more than capable to run and hold 40/45psi. New boost gauges have been fitted to keep an eye on tricks. The old gauges only showed 30psi. Not mapped up yet but playing with what's fitted and turning up dials to a guess what we think tune, all I can say is longer gears would not go a miss. Part throttle is near neck breaking and a whole new feeling. Boost and fuel running slightly over 18-1 will do fine, some smoke will do. We out did a 280hp 450ft/lb VW 2L tdi hybrid Golf from the private track lights to 130ish in a drag race. All that just from eye and hear tuning. Not sure how much dyno time they both need to complete the tunes. The end is near.
 
#77 ·
LOL!!
Harsh?!

Where are you getting it calibrated?

Just remove the surface mount chips on my D22, ready for remapping next week....should be fun, got full access to the ecu now so will be pretty straight forward....just a pain it can't be done via serial interface.
Have you got a spare D40 ecu by any chance? Got the software to do those now also....
 
Discussion starter · #78 ·
I recognise the name from the other Nav/Fronty forums... :geek:

To put the journey of Lee, Tony and I in perspective, over on the US Fronty forum, they're still trying to squeeze a Titan 5.6l V8 into our truck. But they're still fighting the ecu gremlins as we speak.
Such a monster would make 265-275hp atw. It is safe to say that we'll be well into that territory, but with a sh1tload of additional oilburner torque. Lee's going for at least 50-75hp on top of that..... :whistle:

The other route is to supercharge the 4l V6 Fronty, but their have been well documented troubles with the supercharger kit that is most commonly used.

So, for now, as unlikely as it may seem at first, the little utilitarian YD25 diesel fourbanger seems to be in the lead in bringing the Navara/Frontier somewhat reliably into the low 6's/high 5's for 0-60 ....... :dance:
 
#79 ·
Stanton said:
LOL!!
Harsh?!

Where are you getting it calibrated?

Just remove the surface mount chips on my D22, ready for remapping next week....should be fun, got full access to the ecu now so will be pretty straight forward....just a pain it can't be done via serial interface.
Have you got a spare D40 ecu by any chance? Got the software to do those now also....
Click to expand...
Lee has a spare ecu. (straight forward that no quite true :lol: )
 
Discussion starter · #80 ·
Done-it-all said:
Also got us some good 3" stainless to make our straight through turbo pipes.
Click to expand...
I just recalled that the prototype 6255/6258 BW's came with a huge 3.5"/90mm V clamp downpipe outlet fitting. Are you putting a flare on the downpipe to accomodate that big outlet? Or do they now offer different outlet options?
 
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