Waste gate mod

[PETEY_CRUISER]

I was reading on on of the srt4 site that one of the members put a spring on the wastegate actuator arm this helped to holle the high stock boost levels for a longer period. Now knowing that the spring in our stock WG is very week inside this causes it to start opening with oly 4 PSI. I can see how this would work but would this cause addition turbo lag?

[Cal Cruzer]

No, turbo lag is not a function of the wastegate. It is more a function of turbo size and intake volume. You better have a good selection of springs and be willing to do a lot of experimentation to use this method of controlling boost. With the wrong spring you could easily blow an engine. Better to do as others here have done and use a bleed valve to control it. Check out the posts on the subject.

[06turbolite]

Could someone post the size bleed valve needed and also tell me where exactly the wastegate is located?

[2004GTMAN]

Do either of you have a boost gauge cause without one you can easily blow your motor? For one thing, I wouldn't do such a ghetto mod as the spring mod. I'd get a real adjustable wastegate. Raising the boost is not just turning it up. You may need supporting mods depending on what you want. I've seen golfball size holes blown in a block from someone making poor choices with boost.

[Hooligan]

Please look in the upper left corner for the date posted. You both are posting to a 2003 posting.

[Chromenut]

NO BOOST GAUGE = CANNONADED MOTOR!

[2004GTMAN]

Originally Posted by Hooligan

Please look in the upper left corner for the date posted. You both are posting to a 2003 posting.

Actually I'm batting .500. One from '03 and one from today.

[06turbolite]

I was just continuing a thread instead of starting a new one... Yes I have a boost gauge that I can hook up.

Can anyone post a link to a diagram of the turbo and wastegate setup?

Also, what type of bleeder valve have people been using? I have used a bleeder valve in the past on previous FI cars...

Thanks for the help

[xwing777]

[06turbolite]

So this is the wastegate circled in red correct? Where is the line to put the bleedervalve in? I don't see it or I am blind... What size is the line (or size bleeder do I get?)