Builds 1HZ-T HZJ78 All-Climate Expo Build
- Thread starter DamoPeru
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DamoPeru
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- Thread starter
- #102
Well my run of bad luck and continued adherence to Murphys Law continues. Just finished the dyno session to seat the rings, went wonderfully... but driving out on the road on my way directly to the government roadworthy testing center to get my certificate, the brakes felt a bit doughy, I normally do them myself but with so much downtime in the Toyota dealership waiting for engine parts and with the car stuck there, I got them to replace the drums, shoes, pads, brake lines and fluid. Turns out they forgot to reinstall the F'ing pads! Edit: I have to stop believing what mechanics tell me, it seems the bloke at the inspection center who was under the vehicle as they put it on a towtruck told me any old thing... a couple of hours later witht he truck off the towtruck when i had a look myself the pads were there but another workshop error had caused the problem... because I've been going from tow truck to tow truck until today I hadn't noticed. Was a 30 minute drive so we'll see whats been destroyed tomorrow in the morning. Faaaaaaaaaaark.
At least I know the rear brakes work good, and yet another bar story under my belt.... who else has been on a brake testing machine with no brakes!.... the technician was like yelling at me "step on the brakes you fool", then "what are you doing you prick, step on the brakes and stop holding me up".
At least I know the rear brakes work good, and yet another bar story under my belt.... who else has been on a brake testing machine with no brakes!.... the technician was like yelling at me "step on the brakes you fool", then "what are you doing you prick, step on the brakes and stop holding me up".
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Ouch!
Good luck…Seems as though you're closing in on it!!
Good luck…Seems as though you're closing in on it!!
DamoPeru
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- Thread starter
- #106
well thankfully everything i need to replace is in stock here, so I'll be on the road end of week i hope.
I should comment on the dyno process, it went well but I only got to complete 80% of what i wanted to do before i broke it! the dyno blew an air hose... the missus reckons the troopy has a black cloud hovering over it!
anyway, it was very interesting running in the rings on the dyno, had never done anything like that before. You could feel the engine settling in and loosening up on every run. did the first ten minutes at ~1750 rpm with a 7% load at the wheels, then started the 'motoman' acceleration runs. at first i couldn't get it to target rpm under "1/2 throttle", so i pushed it a little harder but pulled back before the target rpm... all based on feel. then the following run you could feel how it loosened up and started to make the higher rpm without as much throttle.
there appeared to be a little smoke apparent on deceleration at the beginning from what i could tell, and at the end of the session there was none apparent, but i can't really be sure when and what was exactly going on there, as my exhaust was piped into a huge muffler (3x 40 gallon drums) outside the building - i was just watching the outlet on top of that.
i have a brand new radiator, and despite the dyno fan not having the height to suit a lifted troopy, I surprisingly had no overheating issues whatsoever, and in the last hour of running on the dyno @ higher loads, i never had to stop to let her cool at all. but neither the aircon or the intercooler is installed yet, which might explain that. I'll be leaving all that off until she's properly run in and will be dyno testing the effects of everything i add/tune/adjust to evaluate whether or not it stays.
I should comment on the dyno process, it went well but I only got to complete 80% of what i wanted to do before i broke it! the dyno blew an air hose... the missus reckons the troopy has a black cloud hovering over it!
anyway, it was very interesting running in the rings on the dyno, had never done anything like that before. You could feel the engine settling in and loosening up on every run. did the first ten minutes at ~1750 rpm with a 7% load at the wheels, then started the 'motoman' acceleration runs. at first i couldn't get it to target rpm under "1/2 throttle", so i pushed it a little harder but pulled back before the target rpm... all based on feel. then the following run you could feel how it loosened up and started to make the higher rpm without as much throttle.
there appeared to be a little smoke apparent on deceleration at the beginning from what i could tell, and at the end of the session there was none apparent, but i can't really be sure when and what was exactly going on there, as my exhaust was piped into a huge muffler (3x 40 gallon drums) outside the building - i was just watching the outlet on top of that.
i have a brand new radiator, and despite the dyno fan not having the height to suit a lifted troopy, I surprisingly had no overheating issues whatsoever, and in the last hour of running on the dyno @ higher loads, i never had to stop to let her cool at all. but neither the aircon or the intercooler is installed yet, which might explain that. I'll be leaving all that off until she's properly run in and will be dyno testing the effects of everything i add/tune/adjust to evaluate whether or not it stays.
DamoPeru
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- Thread starter
- #107
i didn't record all the figures, was too busy listening and feeling the vibrations, but the highest the 1HZ-T turbo outputted was about 8psi... here's the boost pressure (psi) and EGT (C)at a few different rpm and loads. the pump is bench tuned to 1HZ-T specs, with the boost comp setting similar to 1HD-T, and the turbo wastegate is as Mr. T set it.
@ 130Nm
@ 155Nm
I will do proper dyno runs before i make any changes, but not until its got at least 2000 km on it.
what i can say is that either this last time around it was much less precisely rebuilt or the dynamic balancing has made a huge difference... I suspect the latter... on the previous build i had struggled to get over 3500 rpm on the dyno runs, but on the last full throttle run with a target rpm of 4K, it got there easy and felt like it was easily going to get to its rated max of 4600rpm... and it was very smooth running at high rpm.
Edit: and now that i think about it, the fact the last build wasn't seated properly (showed glazing) probably also contributed to this difference i am feeling.
@ 130Nm
@ 155Nm
I will do proper dyno runs before i make any changes, but not until its got at least 2000 km on it.
what i can say is that either this last time around it was much less precisely rebuilt or the dynamic balancing has made a huge difference... I suspect the latter... on the previous build i had struggled to get over 3500 rpm on the dyno runs, but on the last full throttle run with a target rpm of 4K, it got there easy and felt like it was easily going to get to its rated max of 4600rpm... and it was very smooth running at high rpm.
Edit: and now that i think about it, the fact the last build wasn't seated properly (showed glazing) probably also contributed to this difference i am feeling.
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DamoPeru
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- Thread starter
- #108
if time and motivation permits i will get my AFR sensor installed over the weekend as I'm super keen to see what the 1HZ-T pump tune results in, although after 20 months off the road i will probably just end up just driving around every waking moment in an orgasm of troopy and 1HZ-T goodness 
Hi Damien ,
at last you did it !
GOOD Job .
wait to see about temp , and boost after you have run some km.
I remember that the breakin time for my 1HZ T was some thing like 15-20.000 km .
till then it was very tight and not fluid .
after ok , smooth .
ciao Renago
at last you did it !
GOOD Job .
wait to see about temp , and boost after you have run some km.
I remember that the breakin time for my 1HZ T was some thing like 15-20.000 km .
till then it was very tight and not fluid .
after ok , smooth .
ciao Renago
FJRanger
SILVER Star
Well done and outstanding perseverance!
Congrats, Damien!! We both had a big week...if time and motivation permits i will get my AFR sensor installed over the weekend as I'm super keen to see what the 1HZ-T pump tune results in, although after 20 months off the road i will probably just end up just driving around every waking moment in an orgasm of troopy and 1HZ-T goodness
DamoPeru
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- Thread starter
- #114
Just got back from my first trip, 11 hours uphill from sea level to over 5000m or 16500 ft, great run-in drive, though I'm not sure how ideal the 5 hours of engine braking back home is. Very happy so far with the performance, though I need to adjust the tune as she was really rough blowing heavy smoke when fuelled at low revs at high altitude, need a mid elevation tune as I had earlier. I also found it was very easy to get +650C pre-turbo EGTs, and while it's easy to drive to the gauge, hopefully a better tune will remedy that. As per the dyno, the highest the wastegate allowed was 8 psi, though it usually only saw 7.5 psi.
Now to finish the build and start adding all the extras I've accumulated since she was off the road!
Now to finish the build and start adding all the extras I've accumulated since she was off the road!
increase your boost, what turbo are you running?.... you are running really hot EGTs.
DamoPeru
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- Thread starter
- #116
Year I reckon she's a bit rich, but only at high altitude. I want to run the whole thing as close to stock as possible for reliability and longevity. I know upping the boost will help temps, but it's no longer my goal to get as much power as possible out of it, I wouldn't have paid a small fortune for the OEM 1HZ-T turbo if I was looking for power. Anyway I hope to have the AFR sensor installed soon and I'll adjust according to that.
DamoPeru
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- Thread starter
- #119
well she's back at toyota having them clean up their errors from the work they did while waiting on motor parts... the whole fuel system was contaminated from sitting to long, so I had the main tank cut in two and cleaned, but something mechanical is not right with the sender after they reinstalled it.
interesting to see the insides anyway
the other thing they f'ked up was the brake fluid... turns out the reason i had no front brakes was they replaced with DOT 4 instead of DOT 3, so the rubbers that had lived in DOT 3 all their lives got a shock and curled after sitting in DOT 4 for a month... so new brake pistons and a new master cylinder was required.. in country luckily.
my idea of getting work done (that i'd normally do myself) to save some time when she was jailed at the toyota dealership hasn't saved me much, if anything at all! I got them to repack the leaves and reinstall the u-bolts to insert my airbag mounts, and even those had to be redone as the u-bolts were installed crooked and uneven. the also stupidly removed my almost brand new urethane bushes and replaced with rubber ones without consulting me. that will be the last time i ever get anything mechanical done in a shop here that i could do myself!
interesting to see the insides anyway
the other thing they f'ked up was the brake fluid... turns out the reason i had no front brakes was they replaced with DOT 4 instead of DOT 3, so the rubbers that had lived in DOT 3 all their lives got a shock and curled after sitting in DOT 4 for a month... so new brake pistons and a new master cylinder was required.. in country luckily.
my idea of getting work done (that i'd normally do myself) to save some time when she was jailed at the toyota dealership hasn't saved me much, if anything at all! I got them to repack the leaves and reinstall the u-bolts to insert my airbag mounts, and even those had to be redone as the u-bolts were installed crooked and uneven. the also stupidly removed my almost brand new urethane bushes and replaced with rubber ones without consulting me. that will be the last time i ever get anything mechanical done in a shop here that i could do myself!
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Good call Damien.
