Build US Spec. February 1990 Poverty 80 2uz/h151f swap

[Rednexus]

I don’t have anything against an LS swap but it is just not what I want. If I give up on the vvti I would most likely go with a Supercharged non-vvti 2uz. I just don’t want to pay for the premium fuel that comes with the Superchsrger.

If I was to abandon the 2uz series all together I would probably go back to diesel before LS.

I still have a few other options to potentially work through before I abandon the VVTI.

Lucky for me I have a 2uz swapped FJ45 and a Tacoma to drive while I continue to work through this.

Don't blame you on the supercharger, it's an expensive mod even without considering the fuel costs. My 2UZ-FE runs quite well with headers, an exhaust, CAI, tune, upgraded trans valve body, and 4.56 gears. So much so that I tow my camper and compact tractor with the GX, both of which turn a lot of heads. Honestly my only complaints with the engine is that 1) mine has the dreaded "ECU glitch" that throws a SAIS limp-home code in cold weather sometimes and 2) there is nothing I can do to add any more power to mine short of a supercharger, which I'm not going to spend the money on.

I still do think your problem must be solvable, but I'm personally at a loss as how it could be solved.

 

[mrsleeve]

@Tank5

Ran across this over at XAT seems like it might be a possible solution to your issues (albeit fairly expensive one) when they get some in stock

Automatic Transmission Emulator 1UZ 3UZ 2JZ 98+ Toyota Trans

Please note we do not currently have an ETA on these, meaning they are at a minimum, MANY months away from being able to shipATEMU simulates most critical features of particular Toyota / Lexus auto transmissions which were available for UZ / JZ equipped vehicles since 1998. This makes it...

xatracing.com

 

[Broski]

@Tank5

Ran across this over at XAT seems like it might be a possible solution to your issues (albeit fairly expensive one) when they get some in stock

Automatic Transmission Emulator 1UZ 3UZ 2JZ 98+ Toyota Trans

Please note we do not currently have an ETA on these, meaning they are at a minimum, MANY months away from being able to shipATEMU simulates most critical features of particular Toyota / Lexus auto transmissions which were available for UZ / JZ equipped vehicles since 1998. This makes it...

xatracing.com

Although I have nothing to support it. I have felt that it was the swapping out the auto for the 5 speed manual transmission causing the issue.

I hope this is the answer !!

 

[Tank5]

I have been working with Tim over the past few weeks and closely today. I am excited to share that the 80 is running with full torque now. I still have some more test drives to make sure there are not any new pending codes. Feels really good to have it driving like it should.

I will try to explain the issue here as best I can. Tim found that there was a torque reduction program that would activate when the transmission shifted gears. Since I have a manual transmission it was staying in the torque reduction program. All this was in the ecu. Tim figured it out and was able to make the necessary changes in the ecu, so it would run without defaulting to a torque reduction program.

I still have some other work to do on the 80 before it is a regular driver and now that it is working I am excited to get the rest of it done.

 

[thatcabledude]

Ahhh! That makes a total sense. It’s like Toyotas version of what GM calls “torque management”.

 

[Broski]

Very stoked for you getting past this issue!!
It’s been a long time coming.

 

[thepinktaco]

Ive been driving mine a bunch, 365 miles so far, and seem to have things worked out. Too bad it took so long to figure out what the issue was but makes sense that it was due to the manual swap.

 

[mrsleeve]

Glad you got it figured out!!!!!

 

[fjbj40]

Odd that Tim states he has done a bunch of these yet he missed/first time he experienced this issue?

I read the whole thread as I was just gifted a 2004 Tundra and I’m considering the swap to my 80, along with the h151 I have on the garage floor.

I was also looking at his services but now I’m thinking a standalone aftermarket system would be better?

Can’t wait to hear your impressions of the rig after you have put it through some real world driving.

Wickedly good thread and I commend you on your persistence, this was very educational and will help lots of others who go down this path!

 

[Tank5]

Odd that Tim states he has done a bunch of these yet he missed/first time he experienced this issue?

I read the whole thread as I was just gifted a 2004 Tundra and I’m considering the swap to my 80, along with the h151 I have on the garage floor.

I was also looking at his services but now I’m thinking a standalone aftermarket system would be better?

Can’t wait to hear your impressions of the rig after you have put it through some real world driving.

Wickedly good thread and I commend you on your persistence, this was very educational and will help lots of others who go down this path!

Thank for the kind comments. I should clear up something I shared earlier about what Tim told me had done. He had shared he has done about 60-70 2UZ harness/ecu builds but only three were 2UZ VVTI manual transmission builds and I have learned this issue was the consistent with all three of the manual 2UZ VVTI builds. It obviously took a while for him to figure out and required a deep dive into the ecu but I feel this is expected when you are trying to do something different. I appreciate that he stuck with it and figured out why it acting the way it was. I am glad we have it working now.

I am not familiar with any stand alone after market harnesses, so I cannot share any experience. I did have Tim build my first harness for my 2uz / 5 Speed Auto and that setup has worked well without issue, I also expect my current harness on the VVTI manual swap will be just as reliable after I have some more miles on it to make sure all the systems are happy.

 

[fjbj40]

Thank for the kind comments. I should clear up something I shared earlier about what Tim told me had done. He had shared he has done about 60-70 2UZ harness/ecu builds but only three were 2UZ VVTI manual transmission builds and I have learned this issue was the consistent with all three of the manual 2UZ VVTI builds. It obviously took a while for him to figure out and required a deep dive into the ecu but I feel this is expected when you are trying to do something different. I appreciate that he stuck with it and figured out why it acting the way it was. I am glad we have it working now.

I am not familiar with any stand alone after market harnesses, so I cannot share any experience. I did have Tim build my first harness for my 2uz / 5 Speed Auto and that setup has worked well without issue, I also expect my current harness on the VVTI manual swap will be just as reliable after I have some more miles on it to make sure all the systems are happy.

I’m looking forward to hear results.

If they are positive then I might go with his services.

Rock on and stay calm is the only way to deal with the challenges you have had!

 

[Tank5]

I have been able to put a few more miles on it. It seems to be running as it should. No new issues have surfaced except I have a squeal coming from the clutch. It goes away when I push the pedal in but comes back when I let off. Adjusting the pedal stop bolt does not change this. I have also applied some grease on the input shaft at the throw out bearing and where the slave cyclinder rod presses on the fork. What might be causing this? All the clutch related items are new including the pilot bearing.

The other thing I am trying to solve before I put the dash back together is the oil pressure. I am not getting a reading at my gauge cluster, so I need to fix that.

I really miss driving the 80. It is nice to have it driving again but better.

 

[thepinktaco]

I have been able to put a few more miles on it. It seems to be running as it should. No new issues have surfaced except I have a squeal coming from the clutch. It goes away when I push the pedal in but comes back when I let off. Adjusting the pedal stop bolt does not change this. I have also applied some grease on the input shaft at the throw out bearing and where the slave cyclinder rod presses on the fork. What might be causing this? All the clutch related items are new including the pilot bearing.

The other thing I am trying to solve before I put the dash back together is the oil pressure. I am not getting a reading at my gauge cluster, so I need to fix that.

I really miss driving the 80. It is nice to have it driving again but better.

I had to use the FJ80 oil pressure sender to get it to work.

 

[Tank5]

I had to use the FJ80 oil pressure sender to get it to work.

I was thinking this is might be the answer. Did you extend the shield cover from the 2uz harness to the sensor or did you run a separate ground?

 

[thepinktaco]

I was thinking this is might be the answer. Did you extend the shield cover from the 2uz harness to the sensor or did you run a separate ground?

Ran the 2 wires from the 3 pin connector on the RH fender to the oil pressure sender.

 

[Tank5]

I have been enjoying adding miles to the 80 while identifying any bugs that need to be worked out. It is fun to drive after not having it for so long. I collected some data relative to speed/gear/mph. For anyone interested.

I am running stock 80 series diff gears with 4.11, stock 100 series Transfercase gears, and the stock H151F 2uz spec gears with 35 inch tires. The speedometer is spot on with this combination, so I am not planning to make any changes to gearing.

3rd 35 2300
3rd 40 2550
3rd 45 2950
3rd 50 3250

4th 60 2650
4th 65. 2900

5th 60 2356
5th 65 2550
5th 70 2750
5th 75 2950
5th 80 3185

I added a radio, went with a single din unit because I would like to install a trail radio underneath it in the future.

The squeal that I have been hear seems to be coming from the clutch fork pivot point. I don’t recall greasing this when I assembled it, so I will have to drop the transmission just to access it and add some grease. There is no way to get to it without dropping it.

I am revisiting the interior. I had purchased some plastic door panels to use in this rig but am now thinking I would rather just reupholster the cloth panels. The challenge will be finding fabric that is similar to the seats to match. These are the seats I have. Anyone have any suggestions for where I might find something similar? I have been searching Google with out any luck so far.

 

[Broski]

Great work, Denis. I’m happy that you’re finally able to enjoy this rig.

 

[thatcabledude]

Interesting seats. Can’t say I’ve ever seen that fabric before. Definitely different from any 91-92 US spec I’ve seen. They’re usually more like a tweed material.

 

[mudgudgeon]

Interesting seats. Can’t say I’ve ever seen that fabric before. Definitely different from any 91-92 US spec I’ve seen. They’re usually more like a tweed material.

Looks like it may be the same as what was in my '90 JDM VX HDJ81.

Not sure though. It's been 16 years since I had that.

 

[Tank5]

@thatcabledude @mudgudgeon I bought these seats out of a JDM 80 series that was parted out. When I bought them I also got the matching door panels but they are for manual Crank Windows that I later decided not use. I may some day just not now.

Having JDM seats may make finding a similar fabric tough.