Need Input. 8HP70 into FZJ80

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Joined
Aug 8, 2014
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I literally sat here for like an hour and typed up this whole spiel about this and that surrounding my choice to put an 8HP in my truck but then realized that was only diverging from the point.

So, lets get to that
I bought an 8HP before I even bought the truck so i knew from the get go that that was the plan.

Main issue I am having is the fact that I live in Colorado and I have to do an emissions check once every two years.

Given that my truck is a 97, it has ECU/TCU combo
If I remove my trans for the new trans my engine may not run right but more than that is the fact that I will likely get a check engine light.
That means I fail my E check.

I have read all the things on the nets about ways to fix this but most are either inconclusive or are for places where there is no E check.

Has anyone sorted a way to get rid of the stock trans, pass emissions, still have factory drivability and have no check engine light?
 
Find a friend out of the 4 Front Range counties. Register there, problem solved. That said the Emissions guys were great about helping solve our issues (failing but not quite failed O2 sensor).
 
Looking at the FSM, there is one transmission issue that might trigger an ECM check engine light: Park Neutral Safety Switch.

You will need to figure that out and inform the ECM when the 8HP is in Park or Neutral. A standalone TCM should be able to output the P/N signal to the ECM.
 
Yeah I was just looking at the manual last night in the hopes of sorting this out.
I could likely keep the check engine light off which in theory could let me pass emissions but I think there are some other inputs that the ECU receives that can affect idle speeds and drivability. At least thats what I have read online.
More studying of wire diagrams might point me in the right direction but its hard to say what those signals need to be and for how long and what not
It's possible that the Turbolamik TCU that I am running can put out nearly any signal I would need but I can't say for sure.
Could talk to some of the companies making emulators for the other toyotas of similar era and see if they might offer some assitance.+
of course if the Turbolamik/8HP combo could give the appropriate outputs that would be ideal but they are two different animals.
 
There's a whole huge write up about the 8hp install and how to make the check engine light happy. Should be at the top of a Google search
 
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Well after more digging I did come across this thread on there that, from what I can tell, has the info I was looking for.
1FZ trans swaps 6R80 10R80 and more - https://forum.ih8mud.com/threads/1fz-trans-swaps-6r80-10r80-and-more.1330551/page-13
For the record most of the info I needed was on the last page.
There are a couple things scattered in the thread (like the cruise control fix) but OutlawMike does a pretty good job at pointing out where those things are.

Now I just need to sort out things like the speedometer since I will not be running a stock transfer case.
I don't know if that will fail me in the E check but I do know that they run the truck on a dyno type thing and have to reach and maintain various speeds throughout the test.
I wanna say that they are using the speed up on the screen and not the vehicles speedo but I haven't been there in a minute so I don't recall.
I do need to take my 80 in in the next 30 days to get an E check so I will pay more attention.
I might just straight up ask if they require a speedo to work
If not I can just retrofit a GPS speedo kit of some sort and be done with that part

My trans adapter is on backorder from Domiworks and I likely will not do this swap until after summer anyway so I can do some camping this spring and summer.
In the mean time I might use the info I know and design up my own emulator with a little 3D printed box to keep it all tidy.

Just for fun here is the ol' girl just waiting for all my upgrades to show up.
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She's getting a bit of a birthday as I have purchased every bearing, bushing, joint and seal for the whole suspension and axles.
I have new 4.88 gears (also on backorder) front and rear ARB lockers, a 5th gen 4runner front brake upgrade some 35x11.50 tires going on some good ol' fashion steel wheels.

Did manage to find some 2 inch lift OME springs and very lightly used Eibach shocks on marketplace so that will be going on as well.
I have winch waiting on the shelf

I managed to get lucky on an alternator upgrade.
Originally this truck was going to get a 1UZ swap. Yeah Yeah I know thats dumb... low end torque... just do an LS swap... bla bla bla. I had my reasons.
Now for emission check reasons I have bailed on that idea.
I checked all the loopholes and workarounds but most seemed like more of a hassle than what they are worth.
Some could even lead to tax evasion charges which is 100% not what I am trying to do.

Anyway I had already purchased a 1UZ from a 99 GS400 and bought a 250 amp alternator upgrade for that as this is a camping rig after all and I need that power.
I was a little bummed that I could not use the 1UZ and more bummed because now I had this alternator that was just going to sit there.
However, I was looking at the Sequioa 150 amp alternator upgrade with the bracket that Delta now sells and actually bought a use 150amp sequioa alternator.
Just for fun I got the 1uz alternator out and compared it to the sequioa alternator and I'll be dipped if they arent the same case.
Ok not exactly the same but the ear that is missing I believe is not used with the Delta braket anyway.
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Heck I think it even has the same plug as the 1FZ alternator so I won't even have to mess with that.

We'll see if it works here shortly as I am going to get into the front of this engine to replace the crank snout seal, oil pump seal and put a new distributor o ring in while tackling the alternator upgrade at the same time.

Ok I've done enough rambling. I'm just excited.
I've always wanted an 80 series but was never realy in a place to get one or kind of assumed they were a bit to unrefined or something. I dunno it just seemed like not the right thing for me.
So I went through all the other toyotas.
Started with a Tacoma.
That was not it.
Had a 100 series with all the upgrade bits on it that I liked very much but at the time I had just moved to CO and did not know many people doing the off road camping thing.
I was just daily driving the thing and is seemed like a waste.
I knew what the truck could potentially be worth and all I saw was dollar signs so I sold it.
I still regret that sale to this day but I also feel that was not the truck I wanted.
Next I did what everyone in Colorado does and bought a 5th gen 4Runner.
Actaully my wife bought it in 2017 and when she bought a new car I kind of took it over.
Did the lift and awning and bigger tires and skid plates. All the usual stuff.
Went camping twice in it and determined it was too small and maybe too nice to cut up or beat up so I sold that to a friend of mine.
Then it started getting warmer in CO and I was without a rig so I had to make something happen.
Now I have the landcrusier. We'll see how this goes.

There you have it.
This thread is kind of my backwards ass way of introducing myself and my latest project.
I've actually been on here since 2014 but don't really post much.

So until next time.
 
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False advertising. I thought you wanted help sorting out why your 1FZ was only producing 8 horsepower. I was going to tell you to put her down…
 
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