supercharger on a 3F-E (1 Viewer)

[pkorrupted]

I have a 91 FJ-80 with the 3F-E. I used to have a thunderbird super coupe and have a spare eaton m90 supercharger that I was planning on plumbing up to my 3fe. I found a website that has the v-belt pulley that fits the supercharger in various sizes to adjust boost. The m90 has positive boost out so I can run and intercooler. I plan on sending my injectors to RC Engineering to get them flowed to 450cc. Ebay has a 255LPH in tank pump. I plan on running 8-10 psi, maybe more because I will have sufficent fuel supply and the 3fe has 8.0:1 compression which is super low and great for boost. I will obviously have to run the mass air before the supercharger intake and my 3fe is desmoged with a flowmaster muffler so the exhaust is non-restrictive. I plan on starting on this in a month or two. If anyone has any concerns or advice throw it my way. Thanks

 

[tdkhelene]

Hah! That's awesome! The 3-FE needs all the breathing help it can get... I'm all for it! More power for the mighty 3-FE!!!

 

[pkorrupted]

Ya, I love the engine. Its super durable and I have never had a problem with it. Only thing im concerned about is getting the air/fuel ratio correct since the OBD 1 is not easily adjusted on laptop. At least not cheap for the software and im not even sure its available.

 

[akarilo]

This might be easier:

https://forum.ih8mud.com/60-series-wagons/163559-can-you-turbo-3fe.html

As opposed to brackets and pulleys etc...

Good luck with your project.

 

[lt1fire]

Interested as these eatons are easy to find.

My buddy used to have a SC thunderbird in high school. Cool care, untill you needed to change the plugs.

 

[slow91fj90]

Ready to follow this one.

 

[alkaline747trio]

I'd like to see how the factory ECU handles a little boost, I'm pretty sure the O2 sensors are just going to try and force 14.7...but I don't know how safe that is. Maybe an adjustable FPR would do the trick, but I'd think the computer would try to over-come that. Good luck, get a wideband O2 and keep an eye on your ratios.

 

[toojayzee]

I have a 91 FJ-80 with the 3F-E. I used to have a thunderbird super coupe and have a spare eaton m90 supercharger that I was planning on plumbing up to my 3fe. I found a website that has the v-belt pulley that fits the supercharger in various sizes to adjust boost. The m90 has positive boost out so I can run and intercooler. I plan on sending my injectors to RC Engineering to get them flowed to 450cc. Ebay has a 255LPH in tank pump. I plan on running 8-10 psi, maybe more because I will have sufficent fuel supply and the 3fe has 8.0:1 compression which is super low and great for boost. I will obviously have to run the mass air before the supercharger intake and my 3fe is desmoged with a flowmaster muffler so the exhaust is non-restrictive. I plan on starting on this in a month or two. If anyone has any concerns or advice throw it my way. Thanks

Sounds like a great plan.

FMIC, TMIC or SMIC and what size are you thinking ?

1:1 BDFPR ? or ?
Any additional piggyback at all ? AFC-R or other ?

In for the build

 

[Eicca]

Sub. Scribed.

 

[slow91fj90]

Sounds like a great plan.

FMIC, TMIC or SMIC and what size are you thinking ?

1:1 BDFPR ? or ?
Any additional piggyback at all ? AFC-R or other ?

In for the build

Can you explain this for the novice forced air guys?

 

[toojayzee]

FMIC, TMIC or SMIC and what size are you thinking ?

1:1 BDFPR ? or ?
Any additional piggyback at all ? AFC-R or other ?



Can you explain this for the novice forced air guys?

Front, Top or Side Mount Inter Cooler refering of course to the placement of the intercooler.
Since the M90 from the thunder chicken has an actual output for a pipe connection, he'll be able to route intercooler pipeing to plumb it however he wants.

1:1 Boost Dependant Fuel Pressure Regulator.
This would be connected to the fuel rail return, and hooked into a boost reference port on the engine where it will see boost. At 1:1, the regulator would add one PSI of fuel pressure for each PSI of boost. Typically toyota fuel pressure is between 38-42.
So if his static fuel pressure reading with no boost is 38psi, when he accelerates and builts 5psi boost, it would add 5psi fuel pressure bumping up the pressure and potentially forcing more fuel thru the injector to compensate for the added air.
The FPR is a diaphram that will increase fuel pressure by restricting the amount that is returned to the fuel tank.

A Piggy back device would be something that allows the OEM ECU to control every aspect of the engines opperation but then either go around the ecu to add more fuel or trick the ecu into giving it more fuel, change timing etc.
Could be an additional injector controler that is a stand alone unit which references boost and would inject extra fuel thru a separate injector.

The Apex-i afcr is one of the more popular aftermarket piggy back devices that is used to trick the ecu into doing things with fuel that it wouldnt do on its own.

 

[pkorrupted]

So im guessing if I just put a larger fuel pump in and bigger injectors with boost it wont work it self out? I had a 93 mustang 5.0 that I procharged, I just put a 255lph pump in tank and 42lb injectors and at 10psi it all worked itself out. The air/fuel ratio was stoich all the way to red line. On the for the mass air and O2 sensors worked everything out because with extra boost you add extra fuel and it all work out the same for the air fuel ratio. Is toyota computer not going to do the same thing?

 

[pkorrupted]

some pix of the extra rebuilt supercharger I have for the 3F-E

 

[toojayzee]

So im guessing if I just put a larger fuel pump in and bigger injectors with boost it wont work it self out? I had a 93 mustang 5.0 that I procharged, I just put a 255lph pump in tank and 42lb injectors and at 10psi it all worked itself out. The air/fuel ratio was stoich all the way to red line. On the for the mass air and O2 sensors worked everything out because with extra boost you add extra fuel and it all work out the same for the air fuel ratio. Is toyota computer not going to do the same thing?

The mustang EEC is a little different but since this is a maf design similar in concept, you should be able to do similarly with this.
Personally I would throw a 255lph pump on with the injectors your talking about. Im a fan of overkill, so I would run a BDFPR at the minimum. Cheap insurance.

I have a 5.0 in my 4runner and it had a blower on it at one point same deal as your old setup.
My buddy now runs his built dart block, alum head 331 stroker with a P1SC at 11psi on 42lb injectors, spyder intake and made 576hp and 487tq on the stock ecu !

EDIT: I wish I had a spare M90 for my 2UZ

 

[pkorrupted]

what does BDFPR stand for? I get the FPR is fuel pressure regulator but what is the BD?

 

[pkorrupted]

On the mustang I had an adjustable FPR and a gauge next to it so when you adjusted it you knew what it was set to, that seemed to work really well but I assume and adjustable FPR is not available for the 3F-E fuel rail?

 

[lt1fire]

Not adjustable FPR for the 3FE and they also do not have a MAF.


I think the stock computer on a little boost should work fine. IIRC the turbo thread posted above had nothing done to the ecu and it worked fine.

 

[toojayzee]

what does BDFPR stand for? I get the FPR is fuel pressure regulator but what is the BD?

Boost Dependant

On the mustang I had an adjustable FPR and a gauge next to it so when you adjusted it you knew what it was set to

Thats what I would do if it were me

Not adjustable FPR for the 3FE and they also do not have a MAF.


I think the stock computer on a little boost should work fine. IIRC the turbo thread posted above had nothing done to the ecu and it worked fine.

You add the BDFPR after the rail, before the fuel returns to the tank. Your right about the MAF. It would need to be converted to MAF or MAP or add another device.

 

[akarilo]

FPR

If you decide to do an FPR as oppossed to an additional injector controller I would highly recommend this one:

It's a Bell Engineering (BEGI) and I've used them on 3 home-grown turbo setups. The adjustability far surpasses anything else I've encountered. You will need an additional pump though; I used a Pierburg inline in conjunction with the factory Toyota pump. With the additional injector setup though, you can run stock fuel pressure and just tune it accordingly.

The 3fe stock fuel system/ecu will not support forced induction like the FZJ's. It will go lean immediately without some form of enhancement.

 

[corn man]

You might want to look up Grench on this board. He is in OMA and supercharged his 80 (toyota supercharger). He might be able to give you some tips and tricks when he put his in. We had 6 cruisers at Mahoney last weekend, sorry we missed you. Grench did the coordinating and a good time was had by all.