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-   -   Wastegate.. Help Me! (https://www.nopistons.com/2nd-generation-specific-17/wastegate-help-me-27936/)

teknics 11-02-2003 11:22 AM

ok so i have a stock hybrid turbo thingy, and *supposively* a ported stock wastegate.



Ever since i got the car my boost simply climbs higher and higher as the rpm's go higher and higher.



This I sorta knew cant be fixed by a boost controller but i got one just to see if maybe i was wrong...but alas i was right and the boost controller is useless right now.



So what are my options with the stock wastegate? can i convert to a better/bigger external wastegate, does anyone make a bigger wastegate for the stock location?



please help, or send me your old stock wastegate so i can test porting it to see if mine actually is ported https://www.nopistons.com/forums/pub...IR#>/smile.png



kevin.

teknics 11-02-2003 12:37 PM

meh half of what i said doesnt make sense, sorry im feeling lousy today hopefully you get the jist of it.



kevin.

sidewinderx7 11-02-2003 01:18 PM

s4? I forgot what you have and im too lazy to hit the back button. Who ported it? Ive seen bnr's work on s4 wg's, and its good. S5, i did mine myself and its really really easy. You can take it apart and do it yourself. You shoudlnt have too big of problems with creep if its ported. You can also use the flap off a 3rd gen wg and enlarge the hole to that size, thats how bnr does it, or a s5.



as for telling if its ported or not, you'll know by looking at it.

After i ported mine i had no more creepy problems.

Apex13B 11-02-2003 02:54 PM

Exernal wastegate = different exhaust snail



take it apart and post pics

teknics 11-03-2003 06:22 AM

yea from what ive been reading my wastegate definitely isnt ported cause this thing has horrible creep.



what kinda tools should i use to port it? im looking for minimal downtime.



kevin.

sidewinderx7 11-03-2003 06:27 AM

took me a collective hour maybe. Just take off the turbo, take off the back plate on the turbo and open the flap. You might have to bend the arm thingy attached to the flap to get it to open all the way, no worries, just bend it back when youre done. I used a dremel and some metal bits. If you have a die grinder, that would be better.. but dremel works. And then just widen the hole, dont go too wide though .. make sure the flap covers it all still https://www.nopistons.com/forums/pub...IR#>/smile.png



then put the plate back on, reinstall the turbo ... and youre set.



also forgot to ask, what are you running for boost, and whats it creeping to?



i would run about 7psi in 1st, 10 psi in 2nd, 13-15 psi in 3rd and 4th... then it would slowly drop down the further i revved it. Pretty ghettofied, but it worked https://www.nopistons.com/forums/pub...IR#>/smile.png

evilT2 11-03-2003 08:42 AM

its ported, i can send you pictures of the before and after if you like. there really isnt any more room to open up that turbo without bridging the two wastegate holes. i used a die grinder and a titanium carbide tip to open it up as much as it would allow. ill post pictures when i get home from work

teknics 11-03-2003 01:25 PM


Originally Posted by sidewinderx7' date='Nov 3 2003, 07:27 AM
took me a collective hour maybe. Just take off the turbo, take off the back plate on the turbo and open the flap. You might have to bend the arm thingy attached to the flap to get it to open all the way, no worries, just bend it back when youre done. I used a dremel and some metal bits. If you have a die grinder, that would be better.. but dremel works. And then just widen the hole, dont go too wide though .. make sure the flap covers it all still https://www.nopistons.com/forums/pub...IR#>/smile.png



then put the plate back on, reinstall the turbo ... and youre set.



also forgot to ask, what are you running for boost, and whats it creeping to?



i would run about 7psi in 1st, 10 psi in 2nd, 13-15 psi in 3rd and 4th... then it would slowly drop down the further i revved it. Pretty ghettofied, but it worked https://www.nopistons.com/forums/pub...IR#>/smile.png

well i have some sort of stock/t04e hybrid turbo on my car and from what ive gone to this is what i can tell:



1st - 10psi at redline

2nd - 13ish psi at redline

3rd - dont redline it but last time i think it was 15psi at redline

4th - never redlined but it will hit around 15psi at about 5-5.5k rpms

5th - never gone past 4k rpms so boost stays low.



i've been trying to baby it which means i haven't experienced the fun of redlining most of the gears yet.



but in like 3rd and 4th the boost just continually builds, no hesitation or slow down in the building of boost.



kevin.

UniqueTII 11-03-2003 01:29 PM

With my WG ported I never saw over 7.5 psi, but that was on an S4 with only a 2.5" exhaust.

Turbo II 11-03-2003 01:44 PM

use a dremol


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