A few 12ht dyno graphs (1 Viewer)

[Silveredition]

Gday all,
I thought some on here might be interested in seeing a few dyno graphs from my hj61 with a 12ht over the past 6 years of ownership with various mods along the way. It is also interesting to see the difference when comparing the same vehicle on a different dyno.
This first graph is when I first purchased the car and wanted it tuned / checked to get an idea of how healthy it was…

91hp and 237Nm at 7.5psi which I am told is what was expected….

Next, after a couple of years and about 70000km I decided to increase boost to get a bit more power. this stage the only modification was a bigger dump pipe, and straight through 3” exhaust that I made (no muffler).

105hp and 271Nm at 11.5psi

Finally, after another 200000km and 4 years I spent some serious (to me) dollars and got a full engine rebuild, GTurbo, PDI front mount intercooler, +30 injectors and modified injector pump. The graph below is how it is currently, and is beautiful to drive…

168hp and 528Nm at 22psi

Out of interest is the green line on the graph above. It is the baseline run after having been tuned on another dyno. The graph from this place is below.
Similar hp, but a bigdifference in torque

And, one more graph….
This one was after the engine rebuild (boost set to 18psi I believe), with everything the same as above except for the modified injector pump. In this graph, the injector pump was serviced, but I hadn’t had it modified

Hopefully people find this interesting!
Would I do it again??? Nope! Will I ever sell the car??! Nope! Do I love driving it???? Absolutely!!!!

 

[Silveredition]

And here it is…

 

[AussieHJCruza]

Interesting - I've often noticed higher torque readings on Mainline dynos, I'd be interested to know if there's a reason why, but no idea what would cause it.

 

[Earwigg]

Thanks for posting those very interesting.

 

[Tim-HJ61]

Thanks for posting it too. I’ve had a similar journey of performance improvements (exhaust GTurbo and PDI) but haven’t yet gone with the plus 30’s and pump reworked. That was by ADS in Mareeba I guess?

it’s nice to see the data and it matches the seat of the pants feel.

 

[Silveredition]

Thanks for posting it too. I’ve had a similar journey of performance improvements (exhaust GTurbo and PDI) but haven’t yet gone with the plus 30’s and pump reworked. That was by ADS in Mareeba I guess?

it’s nice to see the data and it matches the seat of the pants feel.

Gday Tim,
Yes the +30 injectors and injector pump are both from ADS

 

[BJ4x4]

Great info, thanks for sharing!!

 

[rideglobally]

@Silveredition Thx very interesting post. I have have had my 12ht a while now with the Gturbo, intercooler, 3.5” down pipe, radiator fan. Since out travel is on pause for a while i want to up grade my 12ht. I have not done up grade to the injectors or IP, I would like to get your input on it. I will be stating a new thread so i don’t hijack yours. Thanks again for sharing.

 

[Silveredition]

@Silveredition Thx very interesting post. I have have had my 12ht a while now with the Gturbo, intercooler, 3.5” down pipe, radiator fan. Since out travel is on pause for a while i want to up grade my 12ht. I have not done up grade to the injectors or IP, I would like to get your input on it. I will be stating a new thread so i don’t hijack yours. Thanks again for sharing.

Gday mate, I will reply in your new thread

 

[Bulldoggy66]

Great to see mate!

decent power! Are you running an MLS, or different head studs?

man keen to run a very similar setup!

did you have to modify the injector pump?

cheers

 

[Silveredition]

Great to see mate!

decent power! Are you running an MLS, or different head studs?

man keen to run a very similar setup!

did you have to modify the injector pump?

cheers

Gday mate,
I am running a MLS - but not head studs (as far as I know, as I had the engine rebuilt for me…)
The injector pump was modified by ADS. From memory, it has 11mm plungers which can supply a lot more fuel than standard. Before the injector pump was modified it was maxed out for fuel - now I have plenty of adjustment left…

 

[Bulldoggy66]

Gday mate,
I am running a MLS - but not head studs (as far as I know, as I had the engine rebuilt for me…)
The injector pump was modified by ADS. From memory, it has 11mm plungers which can supply a lot more fuel than standard. Before the injector pump was modified it was maxed out for fuel - now I have plenty of adjustment left…

awesome mate, cheers for the reply.

I had my rebuilt also, didn’t get an MLS.

have Mick’s standard injectors. How do you find the PDI intercooler and gturbo? Did the Intercooler fit fine with condenser?

I follow you on IG, super clean mate!

 

[Silveredition]

awesome mate, cheers for the reply.

I had my rebuilt also, didn’t get an MLS.

have Mick’s standard injectors. How do you find the PDI intercooler and gturbo? Did the Intercooler fit fine with condenser?

I follow you on IG, super clean mate!

The Intercooler didn’t fit that great….. I had already cut the centre of the grill out, and pushed it forward ( similar to our 200 series), but it still didn’t fit - so I cut the lower third off the grill…. I was disappointed at first - but my 60 certainly isn’t like it was from the factory, so I got over it and quite like it now because it is a bit different to the normal….
The PDI / GTurbo works great together… I have a couple of big tests coming up. The first is in 4 weeks time when I am driving it from the south west of WA to the NT (4600km). It will be great to see how it goes sitting at Highway speeds for long periods as I am intending on taking 5 days (solo) to do this…. The next will be over Christmas, when we will be towing our boat to Exmouth (1400km). This will be the first real comparison, and I am looking forward to the trip!!
I also had cruise control fitted last week - so my dodgy knee now gets to have a bit of a rest!!
Thanks for the Instagram follow! I quite enjoy putting photos of it, and what I get up to on there!!

 

[Bulldoggy66]

The Intercooler didn’t fit that great….. I had already cut the centre of the grill out, and pushed it forward ( similar to our 200 series), but it still didn’t fit - so I cut the lower third off the grill…. I was disappointed at first - but my 60 certainly isn’t like it was from the factory, so I got over it and quite like it now because it is a bit different to the normal….
The PDI / GTurbo works great together… I have a couple of big tests coming up. The first is in 4 weeks time when I am driving it from the south west of WA to the NT (4600km). It will be great to see how it goes sitting at Highway speeds for long periods as I am intending on taking 5 days (solo) to do this…. The next will be over Christmas, when we will be towing our boat to Exmouth (1400km). This will be the first real comparison, and I am looking forward to the trip!!
I also had cruise control fitted last week - so my dodgy knee now gets to have a bit of a rest!!
Thanks for the Instagram follow! I quite enjoy putting photos of it, and what I get up to on there!!

Awesome.. keep us updated on the trips. Sure it’ll do great.

Cheers for the PDI figment info, I’ll note that.

The cruise control is a great idea!

keep us updated on Instagram, cheers mate.

Cristian
@elsewhere__co

 

[appels]

Great Post! I love seeing the data.

 

[Silveredition]

Gday all,
Seeing the post above reminded me that I haven’t responded to the couple of long distance tests that I had coming up…
The first was from where I live in the south west of Western Australia to the Northern Territory in the North of Australia. The total trip distance was (from memory) close to 16000km. The ambient temp was in the low to mid 40’s (and high 40’s for a few days)….. I was very unhappy with the coolant temp as I was having to sit on 90km/hr or less to keep the coolant temp under 95. I thought the Intercooler blocking the radiator was the cause, and was intending on removing it once I returned home as getting passed by every other car on the road didn’t interest me (and I was very concerned about what the temps would do when I towed my boat….). I contacted Brian from PDI and he suggested to let the coolant temp rise to 100 - 110 to see if it stabilised. I was hesitant to do this In the middle of nowhere, so kept the speed down for this trip, and returned home pretty unhappy with the hot-weather temps that the car maintained….

 

[bladedog]

Interesting. I'm now running since Nov a new aluminum Champion radiator in my 2H 60 with an 88c thermostat. My stock temp gauge has not climbed above 1/4 mark since installed (note it is winter here on West Coast of Canada, but engine coolant temp is engine coolant temp no matter the season). My old refurbished rad had the temp climbing way too high for comfort on long climbs, or even flat out at 110kmh sustained on flat freeway. What condition is your radiator in?

 

[Silveredition]

The next trip was a 1400km drive to Exmouth - this time towing my 5m boat.
I was worried about the coolant temps as the weather was going to be HOT! At one place we stopped, the road temp measured 60 degrees with my infrared thermometer!

I did as Brian from PDI suggested, set the cruise control on 100, and thought I would just see what happened… in cool ambient temps the coolant sat on 83 - 86, then in the high 30 to low 40 ambient temps it sat on around 96, then as the day went on and the ambient temps went to the mid to high 40’s it stabilised at 100 - 102…. The temps were the same for the trip home.

 

[Silveredition]

Interesting. I'm now running since Nov a new aluminum Champion radiator in my 2H 60 with an 88c thermostat. My stock temp gauge has not climbed above 1/4 mark since installed (note it is winter here on West Coast of Canada, but engine coolant temp is engine coolant temp no matter the season). My old refurbished rad had the temp climbing way too high for comfort on long climbs, or even flat out at 110kmh sustained on flat freeway. What condition is your radiator in?

I have the 82degree thermostat, and normal driving in cool weather the coolant temp is about 80 - 83 (100km/hr). At 110 it is about 86. 86 is below quarter on the gauge.
The radiator is a custom made copper / brass (Adrad Super Louvre) - used by a local company who converts cars to the 6.5 diesel and uses this style of radiator to keep them running cool.
I also have a new genuine Toyota viscous fan hub (a red one - I think it is for a Fj75 (from memory)

 

[bladedog]

Any coolant loss while operating? I've had very small leakage from pipe clamps that require some tightening, so I try to inspect them along the whole plumbing system every couple thousand km. I've heard also that the vane on the waterpump can become loose too, leading to inefficient coolant flow.