Can you Turbo a 3FE?

[agent orange]

Im not suprised that the stock ECU is being a pain to get really dialed in, you are operating way outside what it was designed to deal with. Im surprised that it works as well as it does.

I would definitley hook that TV cable back up though, you are gonna tear your tranny to peices. The kickdown or TV cable, whatever you want to call it controls the amount of line pressure based on throttle input. With it disconnected im surprised you arent overcoming the clutch packs at higher rpms.

 

[rover67]

We shoot for an AFR of around 13-13.5 "off boost" and 12.5 all the way up after that. A bit leaner early on helps build boost, and the extra fuel later on keeps it cool and gives good power (turbo cars love fuel). Also, be carefull running "open loop" because the computer will no longer correct for colder denser air (or hotter air) so if you tune for a nice safe 12.5 in the summer, it may drift to the 13's in the winter. we learned that one the hard way. also, tune a bit rich on the dyno, as they will tent to lean up on the street.

 

[akarilo]

Thanks for the input Rover67. What vehicle were you speaking of tuning?

Agent Orange; Thanks for your input as well. As stated, I don't know much about the cable. I only made one run with it off and then hooked it back up. I really only want to eliminate the really hard "kick down" where the rpm rise considerably. Any options or is it all or nothing?

 

[doctorjj]

What kick down are you talking about where the R's rise?

Oh yeah, almost forgot.

DY---NO!!!! DY---NO!!! DY---NO!!!!

 

[agent orange]

Agent Orange; Thanks for your input as well. As stated, I don't know much about the cable. I only made one run with it off and then hooked it back up. I really only want to eliminate the really hard "kick down" where the rpm rise considerably. Any options or is it all or nothing?

Well if you run the cable a little on the loose side then it will require more throttle input before the tranny will kick down. Whether or not that would put undue wear and tear on the tranny im unsure of. I know with some trannies like the 700r4 you can kill them in no time with no kickdown because they need a certain amount of line pressure to work right and with no TV cable they get burnt up or something. I think it is TCI that has made a valvebody that will always provide like 100psi no matter what to prevent failures if the kickdown fails or is improperly installed.

So, to bring this back around to toyota tech, about all i can think of to help you is run the cable a little loose.

 

[akarilo]

Got the fuel lined out alot better and blew off the cable experiment. Now I need to get a dyno run scheduled!

 

[Zako]

Hey guys,

Sorry to hijack the thread.

But I have a 2f with carby on it, however it's running straight LPG... The carby is there for throttle control and choke.

I wanted to turbocharge my 2F with the TD04 turbo I have, how do I go about it with the LPG converter and mixer?

Regards,

Zako

 

[akarilo]

Hey guys,

Sorry to hijack the thread.

But I have a 2f with carby on it, however it's running straight LPG... The carby is there for throttle control and choke.

I wanted to turbocharge my 2F with the TD04 turbo I have, how do I go about it with the LPG converter and mixer?

Regards,

Zako

WOW!

Yes, you might have better luck starting your own thread as oppossed to posting at the bottom of page 4 of this thread. I doubt you'll get much response regarding you're inquiry anyway, other than; "Cool", "Why", "Dyno", etc.

Good Luck (with your thread)

 

[rover67]

sorry for the late response..

the one we blew up was a honda motor.

most have to run open loop because the computer shoots for 14.7:1.. so if you tune for richer, it keeps trying to bring it back.. and is really hard to get tuned right. One option is the function that lots of the widebands are starting to have now.. they can output a skewed o2 voltage for your narrowband input on your ecu.. so basically what you are doing is telling the computer that the car is runnign at 14.7 when in reality it is running at 13.5. kinda neat.. and allows the stock computer to try to help keep things rich instead of making it dumb by running open loop.

 

[Mace]

Hey guys,

Sorry to hijack the thread.

But I have a 2f with carby on it, however it's running straight LPG... The carby is there for throttle control and choke.

I wanted to turbocharge my 2F with the TD04 turbo I have, how do I go about it with the LPG converter and mixer?

Regards,

Zako

If you search around AU you can actually find a kit that let you bolt a turbo on to a 2F.

My 40 is LPG and turbocharged. Drawthrough there is no need for enrichenment..

Lookup My 40 in the ROTW in the 40/55 section.

 

[PabloCruise]

The FMU has a base fuel pressure setting that is set at atmosphere. When the vacume line is hooked back up the diaphram lifts and the stock pressure resumes. As the engine is transitioning from vacume into boost, the fuel pressure rises with a ratio that coensides with the boost pressure.
The FMU also has a bleed valve with a one way check valve in it. This is used to fine tune the rate of rise.

I am in the process of putting together an additional injector controller setup. That will eliminate the FMU and allow for a very fine tune, improving mileage as well.

O-k, I am only halfway through the thread, but very interested in reading about this.

I am wondering how many miles were on the 3FE when you turbo'd it, how hot she gets, and how you think the oiling system is holding up. Looks like you have an external oiler line going to the turbo? Where did you pul that from?

 

[akarilo]

O-k, I am only halfway through the thread, but very interested in reading about this.

I am wondering how many miles were on the 3FE when you turbo'd it, how hot she gets, and how you think the oiling system is holding up. Looks like you have an external oiler line going to the turbo? Where did you pul that from?

130K. I'm running a 160* thermostat but it looks as if it may be too cool during fall/winter. In all honesty, I think the under hood heat buildup is the only difference. I've been toying with a better way to get that area to vent, then I think the 190* would be fine.

The oil feed is teed in at the oil sending unit and the return is gravity fed into the oil pan.

 

[akarilo]

sorry for the late response..

the one we blew up (that i referred to above) was a honda 4 cylinder.

as far as the numbers goe we've tuned v-8's, 4's and 6's in cars and motorcycles to those numbers. seems to work fairly well.

most of the hondas have to run open loop because the computer shoots for 14.7:1.. so if you tune for richer, it keeps trying to bring it back.. and is really hard to get tuned right. One option is the function that lots of the widebands are starting to have now.. they can output a skewed o2 voltage for your narrowband input on your ecu.. so basically what you are doing is telling the computer that the car is runnign at 14.7 when in reality it is running at 13.5. kinda neat.. and allows the stock computer to try to help keep things rich instead of making it dumb by running open loop.

Yes, my LC-1 has that capability and I have toyed with the idea of utilizing it. Only problem is, the adjustment is all the way across the board. I don't have the capability of pulling any fuel away in the vacume reigon. If I set it at 14.7 do you think I will only have to add fuel (if anything) under vacume conditions?

 

[rover67]

Yep, thats the problem with using that feature.. it runs a bit rich all the time. and to pass emissions those cats HAVE to be getting fed by an engine running right at 14.7:1 What do you mean by setting it at 14.7?

 

[akarilo]

Yep, thats the problem with using that feature.. it runs a bit rich all the time. and to pass emissions those cats HAVE to be getting fed by an engine running right at 14.7:1 What do you mean by setting it at 14.7?

I may be mistaken, but from what I understand you can program the narrowband output of the LC1. The manual stated that the output will not go above or below the hi/low output that you enter. If this is in fact true, then theroetically you could program a very narrow range; say 14.0-15.0. Don't know for sure, just a thought.

 

[rover67]

double check it but it may be saying that you can skew the output. it still has to give you variable data to work... may have to noodle on it for a bit though..

 

[akarilo]

Went to the Dyno!

https://forum.ih8mud.com/showthread.php?t=182413

 

[akarilo]

Latest Update (Cooler Intake)

I think this may be the final configuration; although I can never leave well enough alone!

 

[Tapage]

Beyotiful .. you are vented your BOV back to the outlet of the turbo ?

 

[akarilo]

BOV to atmosphere. No adverse affects to speak of.