2FE or 3FE with Kazuma supercharger

[tlc4x]

I have done a fair bit of searching both here and on the 3FE yuahoo news group about superchargers. The '93 - '97 TRD supercharger is made for the 1FZ but has a very similar bolt pattern to the 3FE head. A custom bracket would accomodatre it.

Everyone says "don't do it" with just about no justification. Yet turbos seem to be just fine. Why?

My questions: 1) Can the 3FE ECU handle a mild 6 - 8 lbs boost from theis supercharger? 2) Can the 2F or 3F handle the pulley attachment? 3) Will the MAF saturate or does it matter? Meaning is it does, won't the O2 sensor and injector control take care of proper fuel adjustment?

Assuming you rebuilt the engine to handle the added stress, wouldn't it be ok?

Thanks for the input.

 

[matt.mcinnes]

Super Chargers are just fine just a alternate way of doing it.

You have the same issues to over come which ever way you do it.

Air, Fuel, Fitting, how much can the engine take.

As for your questions, the 3FE's ECU is pushing it at 6psi+ my 2c

You may have to switch to one serpantine belt with the everything running off it, power steering, altenator and so on. I think you will find this is how its done on the super charged 1FZ but I could be wrong.

Smog emissions may be an issue for you too in Cali.

2FE would be better than a 3FE for this reason which are well stated here by Mark W
IH8MUD.com Forum - View Single Post - 2F + 3F-E = 2F-ETI Into My FJ40

 

[grant5127]

you could just carb it.......

 

[Trollhole]

No fair.

We need more pics. and some sort of specs.

 

[Landpimp]

and more orange paint

yeah WTF is all in there.....?

No fair.

We need more pics. and some sort of specs.

 

[tlc4x]

Yeah, what the hell is that?

you could just carb it.......

 

[tlc4x]

Thanks Matt. I'll keep that in mind. I may just put the 3FE in the truck and get all the kinks out of it (since it only has 79k on it). Fit the superchareger to it and then convert it to a 2FE. Spread the $$ over a longer period.

Do you know if the factory ECU can handle those Supra injectors you got for your truck? I would think that since they are roughly 2x the flow rate, the ECU would just move to a different area (half) in the fuel table. That might then give it enough room to work with the extra boost.

Super Chargers are just fine just a alternate way of doing it.

You have the same issues to over come which ever way you do it.

Air, Fuel, Fitting, how much can the engine take.

As for your questions, the 3FE's ECU is pushing it at 6psi+ my 2c

You may have to switch to one serpantine belt with the everything running off it, power steering, altenator and so on. I think you will find this is how its done on the super charged 1FZ but I could be wrong.

Smog emissions may be an issue for you too in Cali.

2FE would be better than a 3FE for this reason which are well stated here by Mark W
IH8MUD.com Forum - View Single Post - 2F + 3F-E = 2F-ETI Into My FJ40

 

[matt.mcinnes]

Yeah, what the hell is that?

A super charged F series, as and you shall recive

As for the injectors I think the 3FE's ECU will not suit, 3FE injectors are high impedence, the Supra ones are low impedence. But TLF have others that may suit in different flow rates you would have to have a search through there site.

 

[malcb]

you could just carb it.......

Nice - is that yours? My Eaton charger isn't recommended for wet (suck through) operation. Personally I have never been sure about having fuel go through the charger, seems dodgy.

My prefered setup (with fuel injection) is;

Butterfly throttle body
:
:---------------------------
:---------------------------:
Charger ---------------------: Bypass butterfly or valve
: --------------------------- :
: --------------------------- :
: --------------------------- :
Intercooler (Optional) ------ :
: --------------------------- :
:-----------------------------
:
Inlet

Alternative might be to bypass before the intercooler?

Running Megasquirt so the bypass will hopefully me electrically operated - ideas on the trigger conditions appreciated. I want to use it as a boost control and to reduce pumping losses at part throttle.

 

[tlc4x]

Figured out the dizzy might be a problem. I will have to make an adaptor plate to bring the supercharger up higher so the back end clears the dizzy.

 

[malcb]

Figured out the dizzy might be a problem. I will have to make an adaptor plate to bring the supercharger up higher so the back end clears the dizzy.

So your looking at putting the charger on the plug side rather than the manifold side - thats my decision as well. With the big Eaton charger I have the dizzy wount be a problem for me but I am running full electronic ignition with wasted spark so there are no leads coming out of the dizzy.

 

[matt.mcinnes]

So your looking at putting the charger on the plug side rather than the manifold side - thats my decision as well. With the big Eaton charger I have the dizzy wount be a problem for me but I am running full electronic ignition with wasted spark so there are no leads coming out of the dizzy.

Same reasons i built my intercooler to fit in the space above the plugs.

 

[tlc4x]

Hmmm, supercharger is only slightly larger than that.