'94 80 w/ supercharger needs Premium fuel to run ??????

[Mo Rocks]

Newbie looking for a 80 series that will be a daily driver and as much of a trail rig as possible w/o sacrificing street safety/mpg/sanity.
Plan to pull a small travel/camping trailer hopefully if the gods
agree.

I found a '94 FZJ 80 with 230,000 miles. (Yes that is more than I like..but) Has Factory lockers.
Engine rebuilt at 200,000 miles with all OEM parts. They put a TRD supercharger on it and they have reprogrammed the computer and have also retarded the timing. They still have to run Premium in it to avoid spark knock. Stock 9:1 pistons. They can only run 6 PSI boost and are only getting 50-60 more HP. This was done about 30,000 miles ago in 2004. With all this expense, they have not rebuilt the FE. So I am looking at that right away.
As I understend it, they overheated it about 1 year ago, and
blew the HG :whoops: and they had to put another (Toyota) HG on it. Said they resurfaced the head.....
The vehicle is clean otherwise. New 8000 lb. winch. New tires. $1200
stereo system. All in all they spent 9 K on it plus the initial cost of the vehicle.
Not sure yet what the selling price will be. The reserve is set below KBB.

I have not done a search on the need for premium fuel with the TRD supercharger.
Seems something is not set up right here.
Seems like they should be getting better results for the $$ invested.


Thoughts, opinions, options,

Thanks again, Steve

 

[cruiserdan]

You must run premium fuel. Lower octane fuel will damage the motor, it will knock it's self to death. Most 93-94 vehicles will also need some sort of additional fuel management to prevent high-rpm knocking.

 

[Mo Rocks]

OK, I just did a quick search and found that a lot of 80 series owners run premium even w/o superchargers.

BUT, is 50-60 HP all you get out of a $3000 supercharger on these things??

Dazed and confused in Augusta, GA.

 

[cruiserdan]

A 30% power increase from a bolt-on is nothing to sneeze at.

 

[Mo Rocks]

You must run premium fuel. Lower octane fuel will damage the motor, it will knock it's self to death. Most 93-94 vehicles will also need some sort of additional fuel management to prevent high-rpm knocking.

OK, now owning and operating a 80 LC just got a lot more $$$ for me.

What sort of fuel management are you referring to??
Some sort of octane boost.???

Maybe I should look for a '95-97 ?????

Thanks for the reply.

 

[Mo Rocks]

A 30% power increase from a bolt-on is nothing to sneeze at.

OK I am getting educated here. The mechanic that did all the work said he was dissappointed in the results....so that is what I was going on.
I have had 40's, a 55 and a 62 years ago.
The 80 is a new animal to me. Looks like the care and feeding is an ongoing big ticket item.

BIG QUESTION: What kind of MPG range can one expect from a supercharged '94 80 with stock tires?? (for now)

Many Thanks again.

 

[cruiserdan]

OK, now owning and operating a 80 LC just got a lot more $$$ for me.

What sort of fuel management are you referring to??
Some sort of octane boost.???

In my case it's methanol injection.

 

[cruiserdan]

.

BIG QUESTION: What kind of MPG range can one expect from a supercharged '94 80 with stock tires?? (for now)

Many Thanks again.

Depends entirely on how you drive it.

Prolly ~10-14 mpg.

 

[Mo Rocks]

Depends entirely on how you drive it.

Prolly ~10-14 mpg.

That would be 2 gallons or so per day to get to work and back.
Work is 12 miles away.

Next question if I may. I noticed you use a water/methanol injection on your 80. Are there sources for this or is it home made??

 

[-Spike-]

First, you gotta find a WWII fighter aircraft...

-Spike

 

[tommy854runner]

First, you gotta find a WWII fighter aircraft...

-Spike

I believe that 95.5-97 models had a different pcm for OBD II compliance which also made a difference in automatically adjusting fuel pressure and air intake adjustments for lean/rich problems which is why TRD recommend only using the supercharger on 95-97 models. Time for everyone to chime in on how I am wrong here!! It sounds like you have a chance to pick up an awesome rig here. Don't worry about the mileage if you have proper documentation on the rebuild. And yes, these beasts are money pits, not for the lack of reliability but the want to always upgrade something else. Ask me how I know and I am still stock on less than a year of ownership. And oh by the way I had to get over the fact of the lack of speed, and realize really why they are called "Cruisers", from just owing a fairly modified Tundra and a high 13 sec Maxima. Good luck and glad to have some more modified 80 owners in GA!!

 

[Mo Rocks]

Thanks for the replys.

I had to check out the excitement down the street.

We just now had a Southern evening thunderstorm.
Lots of lightning.
A house 3 doors down took a hit.
Five fire trucks responded. Small fire in the attic. (fortunately that was all) A neighbor saw it and said the lightning hit and a big red ball of fire shot straight up into the sky.
Their pets got the scared out of them and ran off.

That was a close one.

Oh yeh, we were talking about the reality of owning a Cruiser.

I remember years ago JC Whitney used to sell a water injection system. Don't know if it is still available.

Next thought. Buy the cruiser and sell the TRD 'charger.
I'm sure there would be a market for it.



Will they run on and water. ????


"Whiskey for my men. Beer for my horses" Willie Nelson
or did I get that backwards??

 

[Ting]

Depends entirely on how you drive it.

Prolly ~10-14 mpg.

Nope -

My last LX450 with SuperCharger -- I got about 16+ on all freeway with some traffic jam, and a little bit of local. Local - is about 13 to 15, so I will say, it’s very comparable to stock engine.

LandCruiserPhil with highly modified rig (6" lift) with supercharger got about 14 MPG during his trip to Canada.

Next thought. Buy the cruiser and sell the TRD 'charger.
I'm sure there would be a market for it.

Why do want to do that? You are wasting labor cost....
Just buy stock rig if you don't like TRD SuperCharger, and leave it for people who want it. My suggestion is go test drive N/A truck, and Supercharger truck and compare it.

 

[cruiserdan]

Nope -

My last LX450 with SuperCharger -- I got about 16+ on all freeway with some traffic jam, and a little bit of local. Local - is about 13 to 15, so I will say, it’s very comparable to stock engine.

LandCruiserPhil with highly modified rig (6" lift) with supercharger got about 14 MPG during his trip to Canada.

Well, I guess that the last ~70,000 miles I have traveled (with blower affixed) and the fuel logs that go with that ~70,000, miles don't mean s***........

 

[KliersLC]

I see catastrophic failure in Ting's very near future.......


FWIW, Ting had an LX with the supposedly superior fuel management.

 

[Ting]

Dan - Sorry I should of make it more clear... My last LX was all bone stock...

Here is Phil’s trip to Canada a few years back....

https://forum.ih8mud.com/showthread.php?t=18753&highlight=mpg

"The best MPG was 15.3 and the worst 11.6 (normal MPG for around town) with an overall average of 13.5." The truck has 6” Lift with 37” tires and other goodies with total of 7080 lbs. From what I have been reading from mud, this is probably very similar to N/A engine built truck.

 

[Mo Rocks]

Dan - Sorry I should of make it more clear... My last LX was all bone stock...

Here is Phil’s trip to Canada a few years back....

https://forum.ih8mud.com/showthread.php?t=18753&highlight=mpg

"The best MPG was 15.3 and the worst 11.6 (normal MPG for around town) with an overall average of 13.5." The truck has 6” Lift with 37” tires and other goodies with total of 7080 lbs. From what I have been reading from mud, this is probably very similar to N/A engine built truck.

Thanks for the replys and the link.
Guess I am catching my breath over the sticker shock of having to run premium in a vehicle that gets 10-14 mpg.
The plus side is that gas here in GA is $.30-.40 a gal. cheaper than out west from what I have read. Some places in SC is even cheaper than that. It varies a lot.
I just bought some premium yesterday in Madison GA, along I-20. $2.819/gal.
The bummer is that so much of the good wheeling that I want to do is on the other side of the Mississippi from here.
Maybe it would just be cheaper to move west again.

I am rambling.......sorry.

It is 0900 and I need
A clear head will help me decide WTH to do. Wishful thinking.

I need 'just a little patience" GNR

Thanks again to everyone on this site. Ya'll are very helpful.
Most appreciated.

 

[medtro]

I see catastrophic failure in Ting's very near future.......


FWIW, Ting had an LX with the supposedly superior fuel management.

I think you are right, the '97 model has a superior fuel management that come with the new ECU for that year only.

 

[SUMOTOY]

Thanks for the replys and the link.
Guess I am catching my breath over the sticker shock of having to run premium in a vehicle that gets 10-14 mpg.
The plus side is that gas here in GA is $.30-.40 a gal. cheaper than out west from what I have read. Some places in SC is even cheaper than that. It varies a lot.
I just bought some premium yesterday in Madison GA, along I-20. $2.819/gal.
The bummer is that so much of the good wheeling that I want to do is on the other side of the Mississippi from here.
Maybe it would just be cheaper to move west again.

I am rambling.......sorry.

It is 0900 and I need
A clear head will help me decide WTH to do. Wishful thinking.

I need 'just a little patience" GNR

Thanks again to everyone on this site. Ya'll are very helpful.
Most appreciated.

I've had my SC mounted for 'only' 37k, but I can add a few comments here.

First, my bet is that the head shave caused a CR bump, which causes the requirement for premium fuel. I have run midgrade in my rig when I know it's not under severe duty, and altho you can tell the difference in power, there is no pinging at 6.5psi.

Second, meth injection is *a* method for controlling ping, but you can also add an intercooler, which should all but eliminate the pinging other than at heat soak rock crawling (and you can install an IC fan for that if you desire).

I posted up my gas mileage was no better/no worse than without the SC. Even Mild on-boost runs up hills on the highway didn't change overall mileage, which I'm sure is due to the lack of kickdown of the trans. The bypass valve on the SC really means you only have 1/2hp drag on the engine when not in boost. That's less than the A/C compressor draws. That said, winch, oversize tires, etc, puts more load on the engine = less gas mileage. I run stock tire size and weight, a key to gas mileage IME.

30% increase in HP with a 1 day install is nothing to be bummed about. And the torque is what makes the SC desireable IMO, not the HP.

Regarding the ecu and timing mods, it might be wise to either put a wide band o2, and/or dyno test the rig to see if what was done, really helped. The head shave concerns me more than the other mods.

HTH and my .02

Scott Justusson
94 FZJ80 Supercharged

 

[GOTMINE]

I have a ($ with the Toyota (Kazuma) SC. I bought it with the SC installed so I don't know what was done to put it in. I do only run premium and don't have any problems with pinging. Also, form my experience, CDans estimation of 10-14 mpg is accurate . My rig is lifted, has ARB and Kamar bumpers and a 10000lb winch. Oh, I also added a 3" exhaust. Hope that helps .