Twin Charging

[Tamago]

Originally Posted by whooppee777

turn head yes. cool/feasable not really

i want to twin charge my yaris

turns head yes, cool/feasable, NOT REALLY

[whooppee777]

is there a button on here i can click that prevents the pessimists from posting on the forums?

[Tamago]

Originally Posted by whooppee777

is there a button on here i can click that prevents the pessimists from posting on the forums?

yes, here it is

http://www.yarisworld.com/forums/log...124c8e83b90456

[whooppee777]

your about as funny as kathy griffin.

i understand that lower compression pistons would be required but how will that affect the power output during low boost when only the supercharger is creating the boost? wouldnt there be a loss in power?

[whooppee777]

Very interesting thread on scionlife

http://www.scionlife.com/forums/view...r=asc&&start=0

[Tamago]

Originally Posted by whooppee777

your about as funny as kathy griffin.

i understand that lower compression pistons would be required but how will that affect the power output during low boost when only the supercharger is creating the boost? wouldnt there be a loss in power?

yes there would. but that's why you have the supercharger, right? make boost before the turbo can?

[Tamago]

Originally Posted by whooppee777

Very interesting thread on scionlife

http://www.scionlife.com/forums/view...r=asc&&start=0

yes, very interesting:

Alex, read the previous page. This twincharge project is DEAD for me. I've already sold the supercharger. I'm not concentrating on an all-turbo build.






HMMMMMM i wonder why he gave up?

because he realized it's not worth the time/money/weight ?

[whooppee777]

Did you not graduate from Grade School, because you don't read very well.

vettereddie's last post

"Yeah, the intake temp is what I saw was the biggest issue and why the twincharge varient is NOT happening. If a new manifold was done after the supercharger that had a air-to-water intercooler built in, then it could probably work. Alternately, I could have used meth injection, but on a daily driver that would be a pain to keep filled. "

and on page 3 he elaborates on his reason for not twin charging

"Simply put, the incoming pre-pressurized air would be at elevated temperature. The compressor rotor lobes are metal and do undergo thermal expansion. If the intake temp is too high, they will expand out of tolerance and hit instead of mesh, locking the compressor. Also, methanol can not be injected pre-s/c to cool the rotors because it could displace the oil in the sealed bearings and dry them out, damaging the compressor shaft. Elevated temperature could also de-laminate the anti-friction coating on the lobes, creating a FOD issue in the compressor, or worse, get pulled into the cylinder. "

it had nothing to do with whether it was "worth the time/money/weight"

congrats Tamago, you officially made an ass of yourself.

[Tamago]

wait wait, so i just read what his reasoning was...

sounds like twin charging was a bad idea.

hmm maybe in your head this:

Simply put, the incoming pre-pressurized air would be at elevated temperature. The compressor rotor lobes are metal and do undergo thermal expansion. If the intake temp is too high, they will expand out of tolerance and hit instead of mesh, locking the compressor.

translates into it being a good idea?

[Tamago]

LOL @ your twincharge idea.

[whooppee777]

that appears to be a bad idea.

i never thought running the boost from the turbo into the s/c compressor was a good idea in the first place. i was considering a manifold that would allow the boost from the turbo to bypass the compressor altogether.



whatever they did is a good idea, if it wasnt a good idea they wouldnt sell it.

[changchewsoon]

Just want to share the emails exchanged between me and Brashboy.

----- Original Message -----
From: "千葉　忠成" <brashboy_chiba@yahoo.co.jp>
To: "Chang Chew Soon" <email masked>
Sent: Friday, April 10, 2009 1:53 PM
Subject: Re: CONTACT US


> Piston set 150,000JPY
> Connecting rods 160,000JPY
> Valve and Valve springe 140,000JPY
>
> E-manage Blue is good!!
> boost 1.2 is no problem for complete engine.
>
> And you need big injector, big fuel pump.
>
> --- Chang Chew Soon <email masked> wrote:
>
>> Hello,
>>
>> Thank you! Yes I agree it is better to have complete
>> set. Can you please
>> quote me the price for the complete set for the
>> piston, rods, valve and
>> valve spring.
>>
>> I am currently using Trust E-Manage Blue, if I want
>> to boost 1.2 bar is it
>> sufficient?
>>
>> Thank you!
>> Chew Soon
>>
>> ----- Original Message -----
>> From: "千葉　忠成" <brashboy_chiba@yahoo.co.jp>
>> To: "Chang Chew Soon" <email masked>
>> Sent: Friday, April 10, 2009 12:13 PM
>> Subject: Re: CONTACT US
>>
>>
>> > Hello.
>> >
>> > I have following forged parts for 1NZ-FE.
>> >
>> > Had better to install,
>> > Piston (8.5:1)
>> > Connecting Rods
>> > Valve
>> > Valve spring
>> >
>> > Our forged 1NZ-FE have over 230ps (Yaris).
>> >
>> > Brash Boy JDM Trading, CHIBA
>> >
>> >

[whooppee777]

thank u. excellent post

[Russelt3hPirate]

Originally Posted by whooppee777

whatever they did is a good idea, if it wasnt a good idea they wouldnt sell it.

this is assuming they didn't do exactly what you were thinking of not doing, and it could be why they aren't selling it as a kit. :(

plus they are on the old Vitz platform, wonder how much the ECU setup has changed since?

[whooppee777]

Originally Posted by Russelt3hPirate

this is assuming they didn't do exactly what you were thinking of not doing, and it could be why they aren't selling it as a kit. :(

plus they are on the old Vitz platform, wonder how much the ECU setup has changed since?

reading that gave me a head ache