External wastegate on an S5 Tii stock setup

soldave · 09-03-2010, 05:46 AM

How feasible is this? Am running a JDM S5 Tii and it's boost creeping like crazy. Have managed to secure a Trust 50mm wastegate for free and would like to use it is possible to replace my existing wastegate setup. One reason is because the actuator's on its way out I think, not pulling the wastegate door shut on decel, resulting in a rattlesnake sound when driving!

Anyway, have read that it's pretty tough to attach an external wastegate to an S5 exhaust manifold. Can anyone who's tried this comment and let me know if it's possible and not a complete swine to do.

Cheers in advance

classicauto · 09-03-2010, 09:38 AM

Much harder to do on an S5 than an S4. Most difficult part is welding onto the cast manifold......HUGE BITCH! I ran a VW wastegate on my stock turbo years ago, it was an S4 though. Much easier to locate the wastegate on that layout.

It can be done on an S5 setup, search for blueTII posts about his HKS 60mm? setup on his hybrid stock turbo on the evilforum.

sen2two · 09-03-2010, 11:09 AM

It's been done before. It works very well for the people that have done it. I'll be doing it on my S5 manifold real soon. I'll post pics of it when i finish...

Sharingan 19 · 09-08-2010, 11:27 AM

finished yet....?

sen2two · 09-10-2010, 04:40 PM

posted pics for you...

09-03-2010, 05:46 AM	#1
soldave Rotary Fanatic Join Date: Jun 2010 Location: Okinawa, Japan Posts: 134 Rep Power: 15	External wastegate on an S5 Tii stock setup How feasible is this? Am running a JDM S5 Tii and it's boost creeping like crazy. Have managed to secure a Trust 50mm wastegate for free and would like to use it is possible to replace my existing wastegate setup. One reason is because the actuator's on its way out I think, not pulling the wastegate door shut on decel, resulting in a rattlesnake sound when driving! Anyway, have read that it's pretty tough to attach an external wastegate to an S5 exhaust manifold. Can anyone who's tried this comment and let me know if it's possible and not a complete swine to do. Cheers in advance __________________ Big in Japan: soldave.ismysite.co.uk

09-03-2010, 11:09 AM	#3
sen2two KTEC Join Date: Jan 2009 Posts: 642 Rep Power: 0	It's been done before. It works very well for the people that have done it. I'll be doing it on my S5 manifold real soon. I'll post pics of it when i finish... __________________ what I have: 1985 Gs:12a All motor Drag car - 1973 Rx2: Play car What I had: 93 Touring: TRADED - 91 Coupe: TRADED - 90 GTU: RHD - 88 10AE: SOLD - 87 Base: SOLD - 86 Base: SOLD - 1985 GSLSE - 85 Gsl: SOLD - 80 Gs: TRADED - 1972 Rx2

09-10-2010, 04:40 PM	#5
sen2two KTEC Join Date: Jan 2009 Posts: 642 Rep Power: 0	posted pics for you... __________________ what I have: 1985 Gs:12a All motor Drag car - 1973 Rx2: Play car What I had: 93 Touring: TRADED - 91 Coupe: TRADED - 90 GTU: RHD - 88 10AE: SOLD - 87 Base: SOLD - 86 Base: SOLD - 1985 GSLSE - 85 Gsl: SOLD - 80 Gs: TRADED - 1972 Rx2

09-08-2010, 11:27 AM	#4
Sharingan 19 Rotary Fanatic Join Date: May 2010 Posts: 138 Rep Power: 15	finished yet....?