1HDT Power rod impressions..

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Not in the near future for me. I guess if money was no option I would. This is a huge improvement in power and enjoyment, especially on the highway. It's good for now.

I asked John to mount my gauge in the centre-right air vent. The right top of the dash where MonsterCruiser put his is where I like my GPS to live.

You need to either get a dash pod or a pillar pod for your extra gauges. Have a look on ebay - especially ebay Australia.
 
Ah of your turbo goes pop time to go the gturbo and IC route.
You could do an intercooler pretty cheap on these trucks
 
yes inexpensive inter coolers, inexpensive turbos ,inexpensive hp mods, my feelings are more about local service ,and 15 psi ct26 max , huh ,and i thought the gturbo was a ct26 base.
 
yes inexpensive inter coolers, inexpensive turbos ,inexpensive hp mods, my feelings are more about local service ,and 15 psi ct26 max , huh ,and i thought the gturbo was a ct26 base.

Over 15psi a stock CT26 is out side its efficiency range and starts blowing more hot air than anything. From my years with Supra's and MR2's running the same style turbo they net diminishing returns over 15psi. I have seen the turbo go supersonic over 20psi and they do not last long there. To explain with I mean with efficiency say you increase the boost from 10 psi to 11psi and net a 10hp increase, then at 16psi you then increase it to 17psi and only net an increase of 2hp this is because you have moved the compressor wheel beyond its efficiency range and its starting to fall off (just heating the air not really flowing any more). That is just an example not real tested numbers.

I had a poorly sized GT30 on a 1jz for a few months and from 20psi to 24psi I would only pick up 8whp but my intake air temps pre inter cooler shot through the roof if I remember right 50c. At 12psi I was picking up 13hp per psi, it started dropping off after 17psi as the flow rate for the turbo also fell.

From what I have heard on the Gturbo is its loosly based on the CT26 with revised compressor and turbine wheels, I would not be surprised in the CHRA is worked over quite a bit as well. The Gturbos look like a fantastic upgrade for the cruisers, he has put a lot of work and time into development.
 
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Gturbo is a highly modified ct26 tuned to our cruiser engines by a cruiserhead.
He has modded turbos for 28 lbs of boost.
AdamB is having great results with his Hdj81 apparently.

I bought a gturbo that is good to 18psi though I think I will be doing 14-15psi Max with an intercooler on my 1hz
 
John put the power rod in my rig this week. Yep, that's the way this truck should pull! I'm really pleased with the performance, and can't wait to take it for a rip up the Hope-Princeton, or up the Snowshed hill on the Coq. I'll be following the milage once I'm through this tank (I'm still getting a feel for the power on this tank, if you know what I mean ;-)
 
Yeah, getting a feel for the power.....

slippery slope, that one. :)
 
The gturbo would be nice I guess, and the day there is immediate local warranty support I will investigate it further. I think we need to remember with pyro readings that the temps we are seeing are the exhaust gas stream not the metal components which are constantly being cooled by surrounding components, oil jets, water jackets and the intake air charge itself. I run my stock CT26 at around 18 psi max for very short duration usually more like 15 for that short spike, if it goes pop, I will look at the ATEB turbo that George is having so much fun with (if it proves out well, of course! sorry George!)

Further impressions,

I need to turn down my boost controller a hair, I think it may change a bit due to several conditions such as ambient temps or some other thing as my boost has crept up a bit from 17 , simple turn of a valve.

Fuel economy- likely unchanged as I seem to still be legging it a bit with the new power!

drive- went up the cut again behind traffic at 1450 rpm locked up when I was able to get a free lane I throttled it enough to not kick down and it pulled strongly up the hill with a bit of black smoke until the boost built up, but I was doing 110 kph at the top...
 
In my 3B this would go something like this....

drive- went down the cut again behind traffic at 1450 rpm pullin' strong when I was able to get a free lane as the traffic pulled so far ahead of me, I throttled it enough to not hurt the arthritis in my knee and it pulled strongly down the hill with a bit of black smoke until the wind picked it up, but I was doing 110 kph at the bottom...

;)
 
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I went up Siskiyou Summit on the shoulder of the right lane in my NA BJ60. The semi trucks were in the right lane with their flashers going, passing me!
 
I went up Siskiyou Summit on the shoulder of the right lane in my NA BJ60. The semi trucks were in the right lane with their flashers going, passing me!

Y'all can imagine me with my HJ60 pulling a 6000lb trailer from here to PEI and back, and imagine the fun of the hills and passes with a loaded truck, 6 people, dog........no turbo.......24-12v converters to activate trailer brakes.....hazard lights kicking said trailer brakes......

i didn't pass nuthin' but boy did I learn a lot. :)
 
I moved my gauge into the vent fins but I broke a couple of the blades in the process. Looks better now but I should have been more patient trimming.

image-3115102583.webp
 
hi the ct26 turbo has different turbine trim when compering 1hdt vs mr-2 or supra-7mgte. so there is quite a bit differences ,with boost vs exhaust pressure,a/r & inducer VE & pressures outlet. so if one really want to knows, which should do best for their engine i suggest do some more digging on turbocharger efficiency ,normally they test them around 18 psi.
 
this g turbo you talk about is this georges turbo from ateb,cause 24 psi and it keeps my egt in half so it works for me . and the hill called the cut i drive at least twice a day .no flat roads around me . the turbo mod to me was not part of my plan but mine needed a rebuild right away so ateb gave it a tweek while it was out ,3 days downtime. and way way cheaper.the mods to me should be in the pump then breathing to controll temps.the turbo is not the heart of a diesel. i will say one bad thing about these mods i have had done by ateb is ,is that some serious r&d needs to go into the tranys clutch and pressure because it is not going to take it. so i have to ask what you guys think my whp is going to read next month for real 200? rant over
 
I want to see this dyno run George. I owe you lunch anyway!
 
this g turbo you talk about is this georges turbo from ateb,cause 24 psi and it keeps my egt in half so it works for me . and the hill called the cut i drive at least twice a day .no flat roads around me . the turbo mod to me was not part of my plan but mine needed a rebuild right away so ateb gave it a tweek while it was out ,3 days downtime. and way way cheaper.the mods to me should be in the pump then breathing to controll temps.the turbo is not the heart of a diesel. i will say one bad thing about these mods i have had done by ateb is ,is that some serious r&d needs to go into the tranys clutch and pressure because it is not going to take it. so i have to ask what you guys think my whp is going to read next month for real 200? rant over

hi, geoge i got one 81 i am doing some mod but it has the complete australian tranny-$6500 hhmm, wonder will it hold on high boost?. when finish i will give it a blash at high boost to see will tranny clutch hold,will keep every one posted.:hhmm:
 
this g turbo you talk about is this georges turbo from ateb,cause 24 psi and it keeps my egt in half so it works for me . and the hill called the cut i drive at least twice a day .no flat roads around me . the turbo mod to me was not part of my plan but mine needed a rebuild right away so ateb gave it a tweek while it was out ,3 days downtime. and way way cheaper.the mods to me should be in the pump then breathing to controll temps.the turbo is not the heart of a diesel. i will say one bad thing about these mods i have had done by ateb is ,is that some serious r&d needs to go into the tranys clutch and pressure because it is not going to take it. so i have to ask what you guys think my whp is going to read next month for real 200? rant over

No the Gturbo everyone is talking about is not the ATEB one.

Serious R&D has been put in those transmissions by Wholesale automatics in OZ. So all you need to do is call and order and wait for the boat to arrive.
 
I think George was being funny. Of course you can get all of this stuff from Australia, some of us apparently don't have a pile of money laying around for extreme transmissions and exotic turbos. Congrats to those that do, guess I should have stayed in school or something.
 
I think George was being funny. Of course you can get all of this stuff from Australia, some of us apparently don't have a pile of money laying around for extreme transmissions and exotic turbos. Congrats to those that do, guess I should have stayed in school or something.

His wording makes it very hard to read and tell if he is serious or not. I was just clarifying for him what we where talking about and letting him know that R&D on the tranny is not needed as its already been done. I know the Wholesale parts are big money but I would think that doing R&D on one locally would very very quickly add up to more than the wholesale parts with possibly not the same results. With the wholesale parts you know they work, not an unknown like doing R&D over and over again to get what you want.

Was not trying to be an ass about it just explaining it.
 
Georges turbo and the Gturbo are indeed different. No offense was taken or implied. There are advantages to going with a costly foreign ready made product just as there are for locally sourced items. I wouldn't (cant) spend that kind of dough on a transmission, so must think outside the box. Cheers.
 

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