My friends turbo idea

super.secret.supra.club

Supramania Contributor
Mar 22, 2007
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San Diego, CA
A Honda with a turbo, nothing new.

A Honda with a sequential turbo setup, probably costs more than a running stock 7mgte.

It'll still take more torque to open a 2 liter bottle of soda than what the Honda will ever produce.
 

AaronsSupraMKIII

Supramania Contributor
Jul 27, 2007
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Athens, AL
I am putting this on my Honda!! :naughty:
p828434_1.jpg



:naughty: I am kidding.....LMAO
 

phoenix6

Rockin' the blades
Aug 13, 2006
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Serena's Place ;)
You know I work for honda, and they are great little cars, even quick little bastards if the right person is doing the work.. but Id never see the point in twins on a civic, fit, 4cyl accord or any other 4cyls. Now a twin set up on the 08 accords with the 3.5l V6... that sounds like fun :)

I still love my supra and celica the most though :)
 

j3pz

still learning
i thought the twins on a 2j were the same size.

http://en.wikipedia.org/wiki/Twin-turbo
Sequential twin-turbo refers to a set up in which the motor can utilize only one turbocharger for lower engine speeds, and both turbochargers at higher engine speeds. During low to mid engine speeds, when available spent exhaust energy is minimal, only one turbocharger (the primary turbocharger) is active. During this period, all of the engine's exhaust energy is directed to the primary turbocharger only, lowering the boost threshold, and increasing power output at low engine speeds. Towards the end of this cycle, the secondary turbocharger is partially activated (both compressor and turbine flow) in order to pre-spool the secondary turbocharger prior to its full utilization. Once a preset engine speed or boost pressure is attained, valves controlling compressor and turbine flow through the secondary turbocharger are opened completely.

im confused now
 

Poodles

I play with fire
Jul 22, 2006
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Fort Worth, TX
small turbo and large turbo doesn't work

small turbo ends up being a bottleneck and/or can't take the stress

at least in that configuration
 

annoyingrob

Boosted member
Jul 5, 2006
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Calgary, Alberta, Canada
Yes 2JZ twins are the same size, but the system works in a similar way.

Poodles said:
small turbo and large turbo doesn't work

small turbo ends up being a bottleneck and/or can't take the stress

at least in that configuration
I don't get what you're saying. Which configuration were you commenting on? The original post? He could open up only the small one at low rpm, then close it off, and open the larger one up at high rpm. How would that choke anything off?

As for AaronsSupraMKIII's post, that's actually a SERIAL turbo setup. If you have the smaller turbo operating at say a 2:1 PR (14.5psi), and turbo 2 operating at a 2:1 PR (14.5PSI) you'll get a net 4:1 PR (43.5PSI). Used for VERY high boost (think 100+ PSI). Not practical for gasoline engines because it'll detonate, but works very well on diesel.


The idea of the asymetrical sequential twin setup is actually a pretty smart one. I was seriously considering building such a setup on another car. The problem is it's very difficult to properly tune and control. You have to adjust a lot of things. You have two wastegates you can tune, you have a transition point you can tune, you have an overlap period you can tune. With that being said, tell him to do it. It will be bad-ass. Assuming he understands how it's all going to work as a complete system.
 

Poodles

I play with fire
Jul 22, 2006
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Fort Worth, TX
asymetrical sequential setup won't work... it's been tried before and found that it doesn't work as planned...

it's better to use a system like the stock 2J twins

I remember reading in a magazine about it, and as your system MIGHT work, the issue is the transition between the two and the loss of power as the larger turbo fully spools...

it just isn't as simple as you'd think, and a non-sequential setup would bottleneck, so that's a no-go as well...