Lowering Boost Audi Wastegate.
 

ok finally got some pics so now i will do a small write up on this thing.

so heres the wastegate
http://www.shortyz.net/turbo2/audiwastegate.JPG

so basically the stock wastegate is set at 14.5 psi which does us honda guys no good at all. so lets get started.

so take all the little nuts off (carefull when unscrewing the last one there is a spring and itll fly right off)

http://www.shortyz.net/turbo2/wg/wg1.jpg

so now that its apart the fun begins.
below is a picture of the top half of the wastegate removed.
http://www.shortyz.net/turbo2/wg/wg5.jpg
as u can see i have drilled out the metal cap on the very top, you need to do this to gain acess to the adjustement screw.

http://www.shortyz.net/turbo2/wg/wg7.jpg
http://www.shortyz.net/turbo2/wg/wg6.jpg

remove the adjustment cap with an allen wrench. here we see its removed. (wow) :P

http://www.shortyz.net/turbo2/wg/wg8.jpg
this is the scary part, i did this the ghetto way also.
i took a spade bit for cutting holes in wood, shapened it up a bit and put it in the drill press. you want to grind down the nipple that the adjustment screw threads into. (this is done because if you back off the adjustment screw all the way this only results in about 12.5 psi.) i "machined" the nipple down with my spade bit. (WARNING: using a spade bit is very tricky and can fuckup the threads in an instant, be careful itll move around a lot if not secured) make sure the center of the spade bit isnt eating the threads!!! (i chopped the pointy bit off my spade bit, but this made it even worse lol)
take the nipple down till there is about 1/4" of nipple is left.
here is a pic of it ground down.
http://www.shortyz.net/turbo2/wg/wg6.jpg

if you have access to a milling machine i suggest using that it will make the job got 100x's faster and better.
the point of grinding down that nipple is that the adjustment screw will go way farther, BACK THE SCREW OFF ALL THE WAY, when u re assemble it.

good luck my fellow hmt buddies. any questions post em.

Re:Lowering Boost Audi Wastegate.
 

So it is now 12.5psi?Another nice write up.

Re:Lowering Boost Audi Wastegate.
 

8psi fully open.

i gotta re test it jeffs giving me some info about testing it or something.

Re:Lowering Boost Audi Wastegate.
 

dude can you make these pictures come back... i totally missed this post.... i was in the middle east when it was posted and just got home...

Re:Lowering Boost Audi Wastegate.
 

Jcushing - Your back? how'd everything go?

and ya shortyz.... what the ---- happend to your hosting! ;)

Re:Lowering Boost Audi Wastegate.
 

yeah im back and we won the war... hehe!! now its time to work on the car... pullin the azenis and z-10s outa the basement today! yay!

Re:Lowering Boost Audi Wastegate.
 

Does that audi wastegate work well? I am currently making a manifold for my t3t4 and i need a wastegate. The ports on that thing lok like they are 20mm so dang tiny compared to even the smallest Tial. would that mother get a ton of boost creep on a d16z6 10psi t3t4 setup?

Re:Lowering Boost Audi Wastegate.
 

It's 30mm not 20.
I had one sold it to a friend
It works really well.
We just put the 7-9 psi turbonetics spring in it and it boosts 7 psi.
Tu turbonetics spring is a bit bigger in diameter, but it works.

Re:Lowering Boost Audi Wastegate.
 

uhm frig!

i need 30 bones to get my hosting back
----!

Re:Lowering Boost Audi Wastegate.
 

gimme a few days

Re:Lowering Boost Audi Wastegate.
 

Host it on www.sounddomain.com or www.freepichosting.com

Re:Lowering Boost Audi Wastegate.
 

What up Jcushing.
thank God you got back in one peace.
:)

Re:Lowering Boost Audi Wastegate.
 

no then i have to change all my thread links

---- that!

Re:Lowering Boost Audi Wastegate.
 

argh,
i need pics !

hehe, my website is down too.. waiting for them to reactivate it

Re:Lowering Boost Audi Wastegate.
 

if you email the pics to me i can host them..... that goes for just about any HMT project.. i have some web space im not using

Re:Lowering Boost Audi Wastegate.
 

cushing why is your email server such a wankermobile.

wouldnt accept from both my accounts including my HMT one.

wtf.

Re:Lowering Boost Audi Wastegate.
 

so heres the wastegate


so basically the stock wastegate is set at 14.5 psi which does us honda guys no good at all. so lets get started.

so take all the little nuts off (carefull when unscrewing the last one there is a spring and itll fly right off)

https://home.attbi.com/~jcushingdc2/...1/site1131.jpg

so now that its apart the fun begins.
below is a picture of the top half of the wastegate removed.
https://home.attbi.com/~jcushingdc2/...1/site1138.jpg

as u can see i have drilled out the metal cap on the very top, you need to do this to gain acess to the adjustement screw.

https://home.attbi.com/~jcushingdc2/...1/site1139.jpg

https://home.attbi.com/~jcushingdc2/...1/site1135.jpg

remove the adjustment cap with an allen wrench. here we see its removed. (wow)
https://home.attbi.com/~jcushingdc2/...1/site1136.jpg

this is the scary part, i did this the ghetto way also.
i took a spade bit for cutting holes in wood, shapened it up a bit and put it in the drill press. you want to grind down the nipple that the adjustment screw threads into. (this is done because if you back off the adjustment screw all the way this only results in about 12.5 psi.) i "machined" the nipple down with my spade bit. (WARNING: using a spade bit is very tricky and can fuckup the threads in an instant, be careful itll move around a lot if not secured) make sure the center of the spade bit isnt eating the threads!!! (i chopped the pointy bit off my spade bit, but this made it even worse lol)
take the nipple down till there is about 1/4" of nipple is left.
here is a pic of it ground down.
https://home.attbi.com/~jcushingdc2/...1/site1135.jpg

if you have access to a milling machine i suggest using that it will make the job got 100x's faster and better.
the point of grinding down that nipple is that the adjustment screw will go way farther, BACK THE SCREW OFF ALL THE WAY, when u re assemble it.

https://home.attbi.com/~jcushingdc2/...1/site1134.jpg

https://home.attbi.com/~jcushingdc2/...1/site1132.jpg

https://home.attbi.com/~jcushingdc2/...1/site1137.jpg

Re:Lowering Boost Audi Wastegate.
 

pics are dead :-[

Re:Lowering Boost Audi Wastegate.
 

Whatever happened to Jcushing??
Went to war again?? Hope he's ok.

Re:Lowering Boost Audi Wastegate.
 

its nice to be loved. im here just i gave up on turbo thats all. anyway i had those pics on my web page for over 8 months so dont complain guys. ill see about gettin em back up.

Re:Lowering Boost Audi Wastegate.
 

Damnnn ...you still here??? wow
You haven't posted in a while..just lurking ??
Why did you give up turbo?

Re:Lowering Boost Audi Wastegate.
 

1. my transmision USDM type R with a JDM final drive
2. B20 with that tranny plus turbo = no fun
3. fear of boosting a b20
4. $$

i replaced my first b20 with a b20z but before i replaced it i was thingkin about getting a b16 with Rocket springs, retainers and r cams so i could rev to like 9500 and keep the tranny. all in all it was a series of events poorly timed that led me to keep what i had.

now i just spend 500 bux on a header so theres really no goin back hehe

Re:Lowering Boost Audi Wastegate.
 

Too bad man.
That setup sounds like fun ;D.
Maybe in the future when you get a project car on the side just for fun...than you can go turbo that one

Re:Lowering Boost Audi Wastegate.
 

i ddint pay the bills for my website either
lol

i am so poor. :'(

Re:Lowering Boost Audi Wastegate.
 

nice dyno! heeh

Re:Lowering Boost Audi Wastegate.
 

doh!, I dont remember which pic goes with which step :(, since ur lazy putting the pics in order, can u put a number above each pic to indicate which step it is? ;D

Thanks :)

Re:Lowering Boost Audi Wastegate.
 

why the ---- is this uip at the top ------- schrisdt

jesus

wheats goign in

Re:Lowering Boost Audi Wastegate.
 

?

Re:Lowering Boost Audi Wastegate.
 

Rofl Shorty's

Nice looking car JCushing...

Re:Lowering Boost Audi Wastegate.
 

i am busy if i got time i will put them in order..

Re:Lowering Boost Audi Wastegate.
 

what years/models did these come on? part numbers would help..

Re: Lowering Boost Audi Wastegate.
 

can someone provide pics from that topic?? cos i got audi wastegate and want to lower boost

Re: Lowering Boost Audi Wastegate.
 

yeah some pics would be very nice

Re: Lowering Boost Audi Wastegate.
 

yea, we need the pictures! i didnt know they were set at 14.5 psi. im gonna run 12 so i guess i can just turn that adjustment screw all the way in?

Re: Lowering Boost Audi Wastegate.
 

i talked to fook who got one around the same time i didi and he said his friend cut about 1 and a half coils off the spring and it lowered down to like 4 psi. throw a boost controller on it and its perfect.

Re: Lowering Boost Audi Wastegate.
 

it wasn't a friend, tho i wouldnt necessarily not call him that, it was your friendly neighborhood HMT admin on his ZC. ;)

Cut 1 coil you might be better off.

Re: Lowering Boost Audi Wastegate.
 

im gonna do what fook says cause i dont really feel like tearin into the damn wastegate.thanks fook

Re: Lowering Boost Audi Wastegate.
 

I was goning to try to measure the spring rate and find another that has a lighter rating.

Re: Lowering Boost Audi Wastegate.
 

i think in the end Jeff tried a Tial 8psi spring and still got 4psi.

Re: Lowering Boost Audi Wastegate.
 

MMM, Okay, I still might look into this, that way when I'm buil;t I can run the 14.5psi spring.