dame-it. I need to start saving for a turbo.
1HD-T Turbo Upgrade Installed & Tested
- Thread starter Adam B
- Start date
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Oh ya - and an intercooler - your truck will run hot egt wise without an intercooler.
mudgudgeon
Resident galah
why would it run hot?
If the turbo is working within its efficiency range, and fuel is tuned to suit, why would it run high EGTs?
thats true. I really want to do the combo but that is 6 grand I am out.
24v converter
Denco Intercooler, Denco Turbo kit, 3in Stainless exhaust and Isspro Gauges.
Dame my truck would be a rocket!
Because it is a 1HZ with a turbo and no intercooler in an HZJ77. Yes if he runs 6-8 pounds the egt's will be fairly low and he will run them up if he is in the big hills out west, but anything over 8 pounds and the egt's will be high if he likes the pedal and is in the hills or bucking a headwind for sure. It's the nature of the beast and it's the consensus among most boosted 1HZ owners. Add a trailer and forget anything over 100kms/hr egt wise. I forget how big his tires are but 35 inch and up are real power robbers and stock gearing will cause high egt's on the road if he is working.
All that being said if he just toots around at 90 kms/hr and pokes here and there and never revs over 2500 etc etc then no intercooler required. Start adding tires, gears, loads, hills, trailers, headwinds, hot temps, type of turbo, etc etc and better start adding boost and mods ie intercooler, ceramic coating, boost comp to keep the smoke down.
Lots of factors, but to just say a turbo in the efficiency range limits the application.
Louis
All that being said if he just toots around at 90 kms/hr and pokes here and there and never revs over 2500 etc etc then no intercooler required. Start adding tires, gears, loads, hills, trailers, headwinds, hot temps, type of turbo, etc etc and better start adding boost and mods ie intercooler, ceramic coating, boost comp to keep the smoke down.
Lots of factors, but to just say a turbo in the efficiency range limits the application.
Louis
Wait before you get a denco kit, I'm trying a bigger intercooler and suspect it will work better. I also think there are better options for turbos, but yes on the 3 inch exhaust, ceramic coatings etc. If you do everything yourself then you can do it alot cheaper than 6K.
PS, you know what makes a big difference on egt's???? Correct valve shim adjustment
I just set mine and a very big difference in power and egt's, bonus!
Tapage
Club 4X4 Panamá
dude .. did you have/make air to air top mounted intercoolers same concept ?
I was planning on leaving the boost alone if I got the Denco kit.
If I did the intercooler I would do what they set it too which I think is around 10 pounds. I want longevity out of this truck.
Towing would be a small utility trailer going hunting in the fall or even a small aluminum jetboat skiff. Nothing big with this truck by any means.
Currently the truck has 285s on it. That will be changing to 255s in June when I start work up again and these ones are worn down a bit more. My trip to school is going to do them in I figure.
Gearing will be stock, I think the only gear mod if I would ever do one would be Marks Gears but I would rather do a bunch of other things before sinking 1500 bucks into that.
I drive it quite conservatively on the highway. I think that it drives good at about 90km/h, I haven't really put it past 100km/h but it will go without an issue. Its not a passing vehicle. I bought a land cruiser not a sports care. I am quite happy with it being a bit of a turtle. I don't have to worry about speeding tickets because I don't drive like a speed freak idiot on the highway.
Rough estimate I am getting 11.5L/100kms 75 city/25 highway.
I am excited for my trip in 2 weeks. I am hoping I can get it down into the 9L range. I would be pretty pumped. I want to see the max kms I can do in a tank.
Wait before you get a denco kit, I'm trying a bigger intercooler and suspect it will work better. I also think there are better options for turbos, but yes on the 3 inch exhaust, ceramic coatings etc. If you do everything yourself then you can do it alot cheaper than 6K.
PS, you know what makes a big difference on egt's???? Correct valve shim adjustment
I think if I was going to go through the trouble I would get the exhaust side ceramically dipped as well as the manifold.
I would concider a diy kit. I just want to do this right.
The new intercooler you found is quite snazzy. Whats one of those running?
Tapage
Club 4X4 Panamá
by any chance an air to air IC in the same spot and setup . ?
Cool.
Are you going to get that intercooler from aus or stick with the frozen boost?
What did your turbo set up run you in the end?
Are you going to get that intercooler from aus or stick with the frozen boost?
What did your turbo set up run you in the end?
- Thread starter
- #33
If you're planning to drive the way you describe and really believe that you will keep the boost below what Louis suggested (~12psi) then I wouldn't spend the money on the intercooler. That's what I was running when I installed the Denco and it did make a difference but I don't think it was dramatic enough to justify the cost. No noticable reduction in EGTs for me at that boost level.
Once I bumped it to 14-15psi it really started to come alive and I think the IC was really happy in that range. I've wondered if it was starting to max out around 18psi because on sustained runs up the Coquihalla in August with my truck loaded up, 34's, 4.10s, the EGTs would be harder to control. Of course it's tough when you live (and tune) at sea level and then drive moutain highways at 1400m. Boost at max for 10-15 minutes at a time with EGTs of 1100-1300F....
I didn't get to try the 18psi thing until I had the 7M compressor in, tried that for most of a year, then increased it to 20 for the last month or so once I had decided to upgrade to this new one.
I'll definitely share my results when I start monitoring air/water temps on the Denco IC setup in the next couple of weeks.
Once I bumped it to 14-15psi it really started to come alive and I think the IC was really happy in that range. I've wondered if it was starting to max out around 18psi because on sustained runs up the Coquihalla in August with my truck loaded up, 34's, 4.10s, the EGTs would be harder to control. Of course it's tough when you live (and tune) at sea level and then drive moutain highways at 1400m. Boost at max for 10-15 minutes at a time with EGTs of 1100-1300F....
I didn't get to try the 18psi thing until I had the 7M compressor in, tried that for most of a year, then increased it to 20 for the last month or so once I had decided to upgrade to this new one.
I'll definitely share my results when I start monitoring air/water temps on the Denco IC setup in the next couple of weeks.
Since I already bought the frozen boost type I will try it out with thermocouples to see what the real numbers are like, if it isn't too good then I'll go with the Northside4x4 intercooler.
Looking forward to some data Adam.
Louis
I've got one of gbentink's turbo's on my 12h-t - I was the guinea pig for him.
I'm still as pleased as Adam B is, and that's after a month or so and a couple of thousand kilometres. I just wish I lived in a hillier place, so I could find something for this turbo to get stuck into and really work!!
The only local test hill that we all know in Perth, Western Australia - Greenmount Hill for any locals reading this, I used to be able to hold 80kmh comfortably in 4th, and 5th too but at the cost of rising EGT. Now I can hold at 70kmh in 5th, around 1700 rpm, and accelerate at any part of the hill at 80kmh in 5th, or around 1850rpm.
But I wanted to comment on the EGT with the new turbo. Guys, I cannot make the EGT's rise anywhere near what they used to get to. I could hit 650°C pre turbo without too much trouble, now I rarely get to 600°C. I have dropped 100°C across all load and rev ranges. My own limit is 650°C, but I have taken it 700°C climbing sanddunes.
The reason for this success is the same reason the engine has no smoke with the fuel screw wound out - the turbo is blowing SO much more air that it keeps both the smoke and the EGT's under terrific control.
Tim
I am a bit shocked on that as well.
I also want to know adams fuel economy. Have you noticed it getting worse?
probably better as you do not have to run full throttle anymore to climb hills.
I'm guessing fuel mileage isn't a priority.
