Twin Charging

[whooppee777]

Originally Posted by Russelt3hPirate

besides little stuff?

have you decided on compression ratio?

slap on a GT30R .76 AR, you don't need low end, you need top end.

new cams.

you're going to have to find the best tuner in the world to get this to run at all.

probably some 600cc injectors too, external fuel pump wouldn't be a bad idea.

2 more built 1nzFE's for the first time you over boost the turbo and can't provide enough fuel (most likely the 3rd or 4th dyno pull).

how much do you forsee this costing you? you pretend $$ isn't a factor, but once you figure out how much you're potentially going to dump into this car you may choose another route.

my guess is around $30k to get it to the point of reliability and more than 250whp use able and safe.

i consider this the collecting information process. thats why i listed the vital items first to gauge the cost. if it's not an astronimical amount after i figure that stuff out i'll move on to the fuel system. sleeving the block will key to figuring out how much boost i will push, i want between 20 and 25 since that's what brash boys said will get you over 300hp going twin charged.

there is a guy who lives less than 2 miles from my home who has a shop literally next to his house with every piece of machinery imaginable for building engines. its all he does for a living is build big block chevy engines. and my dad has known him forever so i'm sure he wont break my back in fees. and he does amazing work for being the crazy mf he is.

so you tell me, at 22.5 pounds of boost what compression pistons should i use?

[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

[whooppee777]

if they would do that im sure they would want a deposit, and i am not sending LARGE amount of money to japan to possibly get ripped off.