Twin Charged 4AGZE Questions??

[toyloco]

I know this subject has been beat to death but I want opinions of the routing method.

I just picked a Levin 4AGZE front clip on Monday and noticed there is a lot space up there in the front as the starter is in the back under the intake/supercharger.

So, natural I came to the Twin Charged idea but have never seen one done in person. So, I wonder what is the best method for this stock motor?? I came to the obvious conclusion there were about 3 ways to make this work but not sure which would actually work the best.

1. Run the Pressure out of the SC into the Inlet of the Turbo, then out of the Turbo through the Intercooler etc etc...

2. Run the Pressure out of the Turbo into the Inlet of the SC, then out of the SC through the Intercooler etc etc...

3. Make some sort of control unit to balance the two units seperatly.

Well I decide that either of the first 2 were probably the simplest??

I wouldn't want more than 15lbs of boost, just more or less the max possibilities of the stock 4AGZE Parts.

If for say I went with a Standard T3 (.42/.48 A/R) would that be to small?? Would I want a T4??

What are the opinions?

I am going to first find a Car to put the set up in and get it running. Most likely a 93 on up Wagon as I like those and they seem to be cheap to buy.

After that I will make the whole Twin thing work.

Thanks

[VooDoo]

a friend is running a turbo to s/c set-up with a TD04 @ 14psi in an AE92. another one with a large IHI turbine (similar to the T3/T4) @ 18psi in an AW11

[micro214_kp61]

Originally Posted by VooDoo

a friend is running a turbo to s/c set-up with a TD04 @ 14psi in an AE92. another one with a large IHI turbine (similar to the T3/T4) @ 18psi in an AW11

yup.. i think you should pm Ronald aka hybrid4age

[toyloco]

OK, But what about routing of the two systems? Anyone have an idea for what method works best?

Thanks

[VooDoo]

turbo to sc is the simplest of the 2, imho.

[toyotaspeed90]

the s/c turning the turbo isn't going to create anywhere near the pressure that the exhaust does..... so the turbo would probably be less efficient than the s/c alone

the easiest route would be to use the s/c at lower rpm's (while running the turbo boost through the s/c) and turn the s/c clutch off at the point that the turbo startts to make good boost, then have the turbo take over... i believe that's how the original HKS setups worked

that being said.... i'm doing a project on my aw11 that has an ae101 gze in it that includes removing some parts and adding others....

the s/c is pretty small, and turbo's aren't nearly as laggy as they used to be (much more efficient)... so there *really* isn't a great reason to do a twincharged system other than to say "look what i have".... a local aw11 with a well built motor and a t25 running MS (these aren't huge numbers) made 240'ish whp and 230'ish wtq (the torque was at like 3,000 rpm's)..... way more torque than the s/c could produce, and probably a twincharge could produce together (don't forget, that the s/c would end up being a restriction in the system)

[VooDoo]

advantage of the twincharge would be a wider powerband accross the rev range. instead of having to wait for the turbo to spool (say at 3k rpm), you have power from 0rpm. we've noticed that running a turbo only set-up could be dangerous on a track or circuit set-up where you tend to mash the pedal when you exit a corner. hehehehehehe!

[StealthSeo]

I want to do this in my paseo, but i dont want one to help the other, i want to use them at the same time, is that more lag then using turbo to sc or sc to turbo?

[toyotaspeed90]

Originally Posted by VooDoo

advantage of the twincharge would be a wider powerband accross the rev range. instead of having to wait for the turbo to spool (say at 3k rpm), you have power from 0rpm. we've noticed that running a turbo only set-up could be dangerous on a track or circuit set-up where you tend to mash the pedal when you exit a corner. hehehehehehe!

how often when you're at a track are your rpm's below 3,000 rpm's???

if you want to make huge power for 1/4 mile, then who cares about lag

if you want to turbo your car for auto-x or road course... then you don't need BIG power... just good strong power.... i used to have a video of that mr2 (with just the t25) on an auto-x.... that thing hauled ass.... had great lowend and good higher power....

if you choose the right turbo, then there should be almost no lag with good power throughout the band

after searching, i'm sorry that my numbers were off by about 20 or so in the previous post.... however...



i don't think i would want to take even a decently setup twincharged car against this.... and since there IS a little bit of lag in the lowerend, you can still use the C series tranny (which he is doing) and not worry about the hard launching & breaking tranny problems.....

[punter]

If your running them sequentially your wasting your time (IMO). You will never beat a well sorted turbo.

But if you run them in parrellel thats a whole different ball game. (caution: deep pockets required)

[StealthSeo]

thanx bro

[toyloco]

Well the plan is just to keep everything simple and the motor stock. So I will run the Turbo into the inlet of the Supercharger. I can put one of those positive pressure switches on the Turbo pipe going up to the SC that will kick off the SC at 10ish psi, so as I can just be running boost from the Turbo past that and when the boost drops back down the SC can then kick back on again. Does that sound good?

Thanks

[StealthSeo]

sounds good