I'm thinking about having my tC twincharged. Has anyone done it? Or read up on it? Any feed back would be cool. I found a shop near me that will do it, but haven't heard about it being done yet.

 

I don't believe anyone has done it yet... Space Wise it's a nightmare to run both a SC and TC in the same bay...

It's also not truely neccesary, as we're pushing WAY past the limits of our Lil' FWD monster with our Stage 1 kits with a built engine out there.

 

This would take a lot of custom work to function properly. Not sure why you'd want to twincharge, besides bragging rights. People usually twincharge because they're running built motors with a turbo that doesn't spool early enough so they add the supercharger for low rpm boost. This reminds me of "dream" threads I used to post when I was first gaining interest in cars. I would do lots of research on twincharging before mentioning it. Good luck.

 

first, you arent going to "twin" charge an inline 4. You may sequentially charge it.. there is a difference. Twin charging uses the same size compressor on each bank (like on a V motor). Sequential charging uses a smaller compressor before a larger compressor. The smaller one spools faster and the larger one provides the higher end boost.

On a tC, this would be extremely difficult to do properly. A lot of customization would be involved, and you would not gain a ton from it with the turbos that we have already.

The best setup would be a roots SC that provides linear boost before the turbo. Then you have to basically do something with the SC boost once the turbo spools. Of course, you could use an electric clutch, similar to some stock setups.. but there would be a lot of work involved here to get it right. And... you will have one hell of a time fitting a roots charger on our car.

And finally, this has been discussed time and time again. If you search around you will find the threads.

 

well said engi! i was bout to say didnt just have a 5 page discussion on this bout a month ago?

 

Nice to know someone else knows what a roots supercharger! My buddy talks about them all the time. I don't even think getting a roots s/c under the hood would be feasible in our car.

 

the T-u-RD supercharger'd be the first thing to blow, haha.

 

Yeah.. our mani setup is pretty tucked agains the firewall for that one. I am sure it could be done, but would be tough. Too bad though, an eaton/roots would blow away the centrifugal unit used on the tC by TRD.

 

could remote mount the turbo. like they do in trans ams and firebirds.

 

dejavue

 

I found the thread looks like i didn't look hard enough the first time.

 

yeah it was my thread earlier, likea few weeks ago...


this would require a custom roots charger for the tC...quite possible, you could get one under there with a sutom manifold....but it'd be tight, but i think it would be do able...

another possibility would be atwin turbo set-up, with an extremely small turbo and a mid-sized turbo....thats a possibilty, but then space causes a problem again....but one can always dream....

good luck with this if you actually pursue it....my original idea was the TRD s/c and a turbo(probably ZPI, they are closest to me)....which might be possible with some tighta$$ piping and some luck....

dream on anyways

 

But I think they went with Centrifugal because of their effiency at low RPM, Roots would need a higher RPM limit to have a good efficient line. No?

 

ok.. a twin turbo would be stupid. but check this out..
My friend said he helped his buddy put a turbo and supercharger in the same car...?

I believe what he did was when the car starts.. the supercharger is what its goin on, and when he starts to feed it some PSI, he lets the turbocharger catch up to the supercharger, but the turbo does NOT effect it yet, but when the PSI on the turbo and supercharger match, he switches it and the supercharger shuts off and the turbo takes over....

better than a little bit of nitrous in first gear to get er goin eh?

Ill see if he can tell me more about it... Im sure in the scion it would be hard as hell, not much space.

 

thinking is nice, how about the money part?

 

you could make a twin-turbo works, but i'd be hard using only 2 exhaust ports to spool them up....henceforth why a said a small a$$ one, and a decent sized one...just probably easier to fit then a sc/tc set-up......

i've seen a twin turboed civic...took a while to spool, but once it did...game over

 

That is exactly what I was talking about above. You can sequentially charge using two turbos or a supercharger and a turbo.

As far as why they chose a centrifugal unit.. Part of the reason is going to be ease of install, ease of fit on our car, most likely cheaper to produce, etc. comparatively a Roots is a much better setup if done right.

 

I'm learning alot from this thread.

 

Super Street mag said they were going to twincharge a tC in the issue they had a couple of months ago that covered the trd SC install.

It'd be interesting to see what they come up with.

 

That will be cool but do you think really think it's worth the time and affect?