The Definitive 60/62 Hp Thread!

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Feb 10, 2008
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Hello all fellow mudders,

I've seen A LOT of threads on power adders for the fj 60/62. Some say this and that work and some say they won't. I've got a fresh 89 fj62 with a 3fe that i am only going to be using as an off-road toy. I live in MO, so they only go back on emissions inspections to like '95 or '96 or something like that, so I'm already planning on taking out the dual cats and running dual 2 1/4" pipes from the factory cat placement back, probably a dual side exit, if room permits. I've though about de-smogging the engine, but I read in a thread on here that there is one system that you do want to leave hooked-up so the computer won't just dump a sh!te load of fuel into the engine to compensate for the increase in "sensed o2", so I'll have to look further into this. Also, I'm trying to figure out, how far advanced the computer goes in this vehicle, as I'm thinking about adding a hydrogen booster, just for slight mpg gains and cleaner exhaust for the environment. Not sure if this has a map sensor or just goes off the o2 sensor

AND I DON'T WANT ANYONE IN HERE SAYING THAT STUFF CAN'T WORK, BECAUSE I HAVE MANUFACTURED MY OWN AND THEY DO WORK (THERE ARE MANY DIFFERENT DESIGNS INVOLVED AND YES....SOME OF THEM ARE POWER HUNGRY AND GIVE HARDLY ANY RESULTS....THAT IS NOT ALL)(i just need to add a pwm for better power consumption)...most people say there can't be any gain in efficiency because your drawing current from the alt putting a load on the engine....but that's exactly what its about (you may be putting a load on it, but no where near what headlamps do and your getting a hell of a lot cleaner exhaust, plus running it safely leaner - hence less gas consumption and the gas that is consumed is consumed a hell of a lot more completely). I wonder if they think that gasoline production is efficient and environmentally-friendly. ANYWAY...OFF TOPIC THERE...LET'S GET BACK.

My question is this: can anyone say for sure that there are any power adders for this engine besides throwing huge money in a turbo, etc? I've never had an engine, that you can't just throw on a bigger throttle body, upgrade injectors and pump, upgrading ignition system, etc., etc. I just don't see anyone saying anything about this. Ofcourse, this forum is soo huge, I could probably spend the next 6 months in here and not read everything. I'm trying to find some cheaper upgrades for power. Also, are there no other heads that fit this block??

Again off-topic, but has anyone done a swap for a supra inline-6? And which would be better route of going for 4x4 for an engine swap...back to old school carb or fi sbc or go for a cummings diesel?
 
also needed to add to this that i do have to drive this on the street to get to off-road spots. he he
 
A turbo setup would be cheaper, and net more power than anything else worthwhile that you could do. If you have the fab skills it can be accomplished for cheaper than you might think. Good luck, but the 3FE is little more than a glorified tractor motor.
 
There are things you can do but all of them cost $$$$$$$. I am desmogged,bigger pipes(this helps more than anything i have done to date) (headers do nothing for a 3fe) really i notice very little any... on take off maybe. Some add a bigger cam and tune the MAF upgrade the ignition system but honestly if it added that much EVERYONE would be doing it and talking about it......hence your search would have came up with something. Same goes for fuel consumption..you just will not get it nor any other Cruiser

These tractors are made for anything other than speed. My 2 cents if you want more horses do a motor swap that would be more cost efficient in the end. ;) I have no clue what a turbo mod costs
 
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The biggest improvement you can do to a 3FE is remove the A440F and bolt up a H55F.
 
I've though about de-smogging the engine, but I read in a thread on here that there is one system that you do want to leave hooked-up so the computer won't just dump a sh!te load of fuel into the engine to compensate for the increase in "sensed o2", so I'll have to look further into this.

The emission systems consist of: EGR, Air Injection (smog pump), PCV, charcoal canister, cat converters. Leave the PCV, the canister, and personally I would leave the cats. Modern cats don't rob that much power. The PCV and canister do not rob power. Many folks have removed the EGR and AI systems so I'm not sure what you are talking about.

Also, I'm trying to figure out, how far advanced the computer goes in this vehicle, as I'm thinking about adding a hydrogen booster, just for slight mpg gains and cleaner exhaust for the environment. Not sure if this has a map sensor or just goes off the o2 sensor.

It is obvious you know nothing about your 3FE. Get the factory service manual from Toyota. Also, download the 1988 FJ62 New Features document and memorize it. You have several sensors and devices that work the FI, and you do not have a MAP sensor.

Also, there is a 3FE list at Yahoo. They have a good files section. Do some homework and you will get the most from the 3FE.
 
The emission systems consist of: EGR, Air Injection (smog pump), PCV, charcoal canister, cat converters. Leave the PCV, the canister, and personally I would leave the cats. Modern cats don't rob that much power. The PCV and canister do not rob power. Many folks have removed the EGR and AI systems so I'm not sure what you are talking about.



It is obvious you know nothing about your 3FE. Get the factory service manual from Toyota. Also, download the 1988 FJ62 New Features document and memorize it. You have several sensors and devices that work the FI, and you do not have a MAP sensor.

Also, there is a 3FE list at Yahoo. They have a good files section. Do some homework and you will get the most from the 3FE.
x2 on all of that but pappy i almost did not open that link......good stuff:)
 
Pappy-
I've never seen that manual before, and I think it's awesome! I've done a lot of my own research into EFI trying to fix my 3fe, and I wish I had that a long time ago. Thanks for posting the link.
 
There are a number of places to look for info on getting more power from the 3FE. Here's one:
https://forum.ih8mud.com/60-series-wagons/19971-3fe-engine-beef-up.html

The 80's faq may also have something, since the first 2 model years used the same 3FE engine.

The 3FE list on yahoo is legendary...

There are ways to get more power from the F engines...but they cost money.

Consensus seems to be that the most straightforward way to get more power is a SBC swap.

BTW - the Supra is an engine tuned for HP, the F series for Torque. Not really interchangable, but both great engines.
 
The emission systems consist of: EGR, Air Injection (smog pump), PCV, charcoal canister, cat converters. Leave the PCV, the canister, and personally I would leave the cats. Modern cats don't rob that much power. The PCV and canister do not rob power. Many folks have removed the EGR and AI systems so I'm not sure what you are talking about.



It is obvious you know nothing about your 3FE. Get the factory service manual from Toyota. Also, download the 1988 FJ62 New Features document and memorize it. You have several sensors and devices that work the FI, and you do not have a MAP sensor.

Also, there is a 3FE list at Yahoo. They have a good files section. Do some homework and you will get the most from the 3FE.


This is true. I do not know a whole lot about engines to begin with (a fair bit though), and know nothing of computer controlled engines. That is why I am posting here in the first place. In fact, I have 2 of the 3 FSMs (I am told there are a total of three from my other post). I am trying to figure out if removing the AI pump and the EGR system is worth it. Does doing this add more power? Does it decrease reliability of the enginge? It would seem to me that the EGR would send some unburnt fuel back into the engine and be more efficient, and from reading the pdf link you gave, the purpose of the AI system seems like it literally "blows" the leftovers that would become carbon deposits out, therefore increasing the life of the engine. But at what cost is the parasitic air pump robbing power? Without these systems, would the computer "malfunction" and give me CELs all the time?

If anyone could elaborate a little further in this area if the have knowledge of it would be appreciated. I would like to add a snorkel and change that air intake, if only for that it doesn't look very good and efficient air flow. But my main reason for asking about all of this is I am trying to determine if I should leave everything as is (with the exception of improving intake and exhaust flow), and just wait till the thing dies, or I fall upon a crap-load of money and am able to do an engine/tranny swap.
 
What's a hydrogen booster?

If you've ever seen or heard of propane injection, it's kinda like that. It's a small on-board electrolysis unit, that while robs power by using anywhere from 1-20 amps (depending on design), gives back by adding more power through (HHO gas or Browns gas) a more complete consumption of the gas you put into the engine (not to mention this stuff explodes anyway). Also, because of the VERY hot temperatures that this stuff burns at (but for only fractions of the combust time of gas) it basically incinerates all your carbons and bad stuff coming out. NOT SAYING ANYTHING ABOUT OVER UNITY! Just better burning fuel in engine, and if you can keep the computer from dumping more fuel in when it sees more O2 in the exhaust, you can get better gas mileage too.

Many trucking companys and auto users are starting to use these. Anyway, sorry for the late reply, just went back to work from unemployment leave and been really busy.
 
I am trying to figure out if removing the AI pump and the EGR system is worth it. Does doing this add more power?
Yes, deleting AIR frees the parasitic power consumed by the pump.
Deleting EGR increases BMEP, increasing efficiency.

Does it decrease reliability of the enginge?
Removing unnecessary parts does not decrease reliability.

It would seem to me that the EGR would send some unburnt fuel back into the engine and be more efficient
If the engine is tuned right, there is essentially no unburned fuel or O2 in the endgas. Recycling the endgas makes the combustion event slower and cooler, reducing efficiency.

the purpose of the AI system seems like it literally "blows" the leftovers that would become carbon deposits out, therefore increasing the life of the engine.
AIR works in the exhaust system, after the combustion has occurred in the engine. It has no effect on combustion efficiency inside the engine.
On engines that do not have a catalyst, the AIR system functions as an exhaust dilution system.
On engines w/ cat, the air injected into the exhaust aids in firing the cat.

But at what cost is the parasitic air pump robbing power?
Dunno.

Without these systems, would the computer "malfunction" and give me CELs all the time?
No, the 3FE injection computer does not look closely at emissions status.
 

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