Big 16G 9cm

[BobWrinkle]

Hey doods,

How come no-one runs the evo 4 big 16g with 9cm housing rather then 7cm??

What are the pros and cons?

I have already noticed that all aftermarket headers seem to be for the 7cm.

Could you get one to fit a vr4 thats 9??

 

[tharaka]

Hey doods,

How come no-one runs the evo 4 big 16g with 9cm housing rather then 7cm??

What are the pros and cons?

I have already noticed that all aftermarket headers seem to be for the 7cm.

Could you get one to fit a vr4 thats 9??

umm
the turbo is facing the wrong way
and it has a different flange

 

[VR-4-PLAY]

the evo 4+ turbos spin the wrong way.........

 

[BobWrinkle]

does that mean its impossible to fit?!!

How can it spin the wrong way?!!

 

[tharaka]

does that mean its impossible to fit?!!

How can it spin the wrong way?!!

td05h

td05hr

 

[BobWrinkle]

but i mean its all the same, air goes past spins it which spins the compressor which pushes air right?

So i will need a custom header.

I don't see how it could spin backwards, air is only going one way out of the header

 

[CLuTZ]

Theoretically it can be done, but you'll need your intake on the right (there's no room) and the exhaust will be a tight fit also.....

 

[BobWrinkle]

ok
was organising to get the evo 4 turbo off nzmmc :'(

I am glad i asked the question.

Cheers guys.

 

[BobWrinkle]

what if u grab a new compressor wheel from a standard evo3 turbo??

 

[tharaka]

what if u grab a new compressor wheel from a standard evo3 turbo??

then what is the point?

 

[CLuTZ]

what if u grab a new compressor wheel from a standard evo3 turbo??

then what is the point?

9cm housing. You would need a custom manifold to suit too.

 

[BobWrinkle]

what if u grab a new compressor wheel from a standard evo3 turbo??

then what is the point?

For the 9cm housing.

There would be some benefit to that wouldn't there?

 

[matress]

the benefits would be more top end power, more lag though.
9cm is roughly .7-ish A/R i think

 

[CLuTZ]

the benefits would be more top end power, more lag though.
9cm is roughly .7-ish A/R i think

.65A/R :wink:

 

[BobWrinkle]

whats the stanndard 7cm a/r?

 

[VR-4-PLAY]

6 cm2 = 0.41 A/R
7 cm2 = 0.49 A/R
8 cm2 = 0.57 A/R
9 cm2 = 0.65 A/R
10 cm2 = 0.73 A/R
11 cm2 = 0.81 A/R
12 cm2 = 0.89 A/R

 

[BobWrinkle]

Ok I just so its completey clear, its definately not a good idea??

$320 to my door :'(

 

[CLuTZ]

Ok I just so its completey clear, its definately not a good idea??

$320 to my door :'(

its going to take alot more money than that to get it bolted on and working properly.

 

[tharaka]

so yeah, its a lot of work[/list]

 

[matress]

nice pics tharaka!
looks like a royal pain in the rectum! more trouble/money than it's worth