Downpipe for GT35R

[TYTILIDIE]

What do people use? I also was wondering what hte difference between the one with and without the actuator is. I assume its one is a ball bearing while the other is not? I know one is internal WG and hte other wont be but why? Just a preference? Maybe Im wrong. They also look very different from each other in the pics, both have same HP rating, so I guess just wondering whats up with that also.

 

[jjorgensen52]

Re: Downpipe for GT35R

Well, I use a PTE internal wastegated downpipe with the SyTy .85 A/R housing. It's the ball bearing with the actuator, because it has the internal wastegate. My brother is now running a GT35R ball bearing with a non-syty housing and a V-band downpipe attachement, along with an external wastegate. They can be configured either way, although I'll say with the internal gate I can't get boost below about 12psi once I get on it, so external is way better for boost control

 

[TYTILIDIE]

Re: Downpipe for GT35R

Well, I use a PTE internal wastegated downpipe with the SyTy .85 A/R housing. It's the ball bearing with the actuator, because it has the internal wastegate. My brother is now running a GT35R ball bearing with a non-syty housing and a V-band downpipe attachement, along with an external wastegate. They can be configured either way, although I'll say with the internal gate I can't get boost below about 12psi once I get on it, so external is way better for boost control

You cant BELOW 12? Thats kinda wierd isnt it? Ill be new to the big turbo world when I get this. So you run the stock DP I take it?

 

[dgoodhue]

Re: Downpipe for GT35R

It has to do with the acuator. My new PTE61 is the same way.

 

[ViciousV6]

Re: Downpipe for GT35R

Need a downpipe for it.
I will be selling a ATR stainless downpipe and test pipe with 38mm wastegate and coated with black jet hot 2000, hopefully by Monday since we are suppose be installing my new custom 4" downpipe with 60mm wastegat on Sunday. Just not holding my breath anymore.

He your interest PM me.

Ralph
ViciousV6

P.S. External wastegate

 

[jjorgensen52]

Re: Downpipe for GT35R

You cant BELOW 12? Thats kinda wierd isnt it? Ill be new to the big turbo world when I get this. So you run the stock DP I take it?

I'm running the PTE 3" downpipe, but it's the internally wastegated (Stock design) one. I've ported my wastegate, adjusted the actuator, and tried everything else but 10 - 12 psi is as low as I can get it under load using this gate setup. Boost comes on super quick though :tup: . When I first had it, with the gate open (unported) I was making over 18psi. I run 18psi on the street right now, which is with the wastegate 65% open. Simply put, the stock wastegate setup SUCKS for boost control. If I was doing it again, I would definitely use a different wastegate setup, no question. In fact, boost control is on my list of to do items. Along with a new TCC and installing the LS1 coils I have waiting for the truck all ready to go.

 

[TYTILIDIE]

Re: Downpipe for GT35R

Im not ready to buy anythign yet just feeling everything out before I make my final decision. My plan is to hopefully be able to get the turbo by the end of the year and everything else before spring 08. Then ofcourse have it on and working by spring 08 too. Im sure Ill be rebuilding my engine as well to handle it.

 

[ViciousV6]

Re: Downpipe for GT35R

Im not ready to buy anythign yet just feeling everything out before I make my final decision. My plan is to hopefully be able to get the turbo by the end of the year and everything else before spring 08. Then ofcourse have it on and working by spring 08 too. Im sure Ill be rebuilding my engine as well to handle it.

Well I have a GT35R (from limit engineering) ATR Downpipe with 38mm wastegate, bult stock block motor w/vortecs, custom headers, custom air to air intercooler and Big Stuff3 controller.

We just went 11.6 @ 119 on 17lbs of boost. No launch off idle, and auto shifting @ 4800 with a cam set-up for 5200 shifts. !.80 60 ft.

Now we just installed RPM Coilover set-up and haven't been back to the track yet, next couple weeks. Suspension feels way better and feels like it leaves better and more controlled.

Ralph
ViciousV6