bigtymer

Just wondering, whats the diameter of all 3 of the holes on ur wastegates. Or what do u reccommend? And, is it alright to weld on a washer or do i need a valve? thanks a lot

matt

Aaron Cake

iTrader: (1)

You mean two holes, right?

Port them out to the maximum size of the flapper door. If you are brave, go several MM past that. If you now need to raise your boost, use a boost controller to do so.

RETed

http://fc3spro.com/TECH/HOWTO/KWG/kwg.html


-Ted

bigtymer

ya well none of that says how big to make the holes or how big the stock holes are? I need to tell a shop how big the stock holes are and how big i want them. The shop is about an hour drive away so it would be much easier to tell him all the required information and get a quote, rather than to drive down there and show him the wastegate, only to find out his quote is bull ****.

thanks

$150FC

why not grab a ruler?

calio64

why not buy a dremel and do it yourself, that something simple enough for you to do

good luck

ilike2eatricers

ask and you shall receive

before


after

bigtymer

SO WILL i need to weld a new flapper on or will the stock one be fine?

SureShot

I ported the holes & kept the stock pucks.
I also trimmed about 2mm off the back side of the flapper so it could swing open more before hitting the back plate.
Before: 6-9-11-12-12
After: 5-6-6-6-6
(Stock intake & gutted cats)

Aaron Cake

iTrader: (1)

You CAN port the hole bigger then the flapper door. Just make sure that the door cannot get stuck in the hole. Then simply use a boost controller (preferably an electronic unit, but manual will of course work) to raise your boost to the level you want.

With the hole larger then the flapper, you will lose a small amount of low end boost. But with an upgraded exhaust and intake, it will be unnoticable.

RETed

You don't need to go bigger.
With the holes ported to the size in my pics, the car does solid 2.5psi (yes, two point five psi) with an H-trim compressor upgrade.


-Ted