RS49T w/ internal gate creep issues

[pickens]

I am really interested in buying this turbo w/ the internal gate. I searched, but didn't find any concrete reviews on it. I really want to know if these turbos have severe creep issues like e16gs.

 

[GSX4LIFE]

It may have some creep. There is a nice little trick I I learned from Ben @APG when porting that will take care of most creep issues. Its a little hard to explaine in type.

 

[BrokenTsi]

i just bought the rs49, not the turbonetics one, but its the same thing.

I noticed the wasteflaper doesn't open all the way. Im going to port it out so it does open all the way. shit opens like its a 14b exhaust housing. Looks like it would creep to me. Also, the internal gate mounts on the o2 housing. I never knew that, and it looks funny, I haven't installed it, but from people I asked, if you have stock fans you have to trim it because the acuator sticks out so much. Weird.

 

[sweet97]

I was able to hold 13 psi with the RS49. At most it my ceep to 17 psi according to BEN at AGP but I never had any problems and with the 50 trim you want to run 20-22+ psi on pump. I liked mine so much i went and bought an RS60T with the same internal gate.Mark

 

[BrokenTsi]

yeah, but 13 or 17 aint nothing on a 50 trim. Car will barely move at those boost levels. When I'm trying to tune for 24psi i dont want it to creep to 26 or 27.

 

[sweet97]

Yeah you're right Drew but if it will hold low boost it will hold higher settings as well. Mark

 

[BrokenTsi]

i hope so, cuz all I'm used to is boost creep on my car, . I'll be running an o2 dump and i'm porting out the space behind the wastegate flapper, so hopefully i'll be good to go. IF that doesn't do it, ill switch to external gate.

 

[sweet97]

I went internal on the 60 and was told maybe ceep to 17 but who would run less? I amlooking at 22 psi. Send me a PM about June 4th. Mark

 

[pickens]

I guess nobody is really using this turbo yet. I am looking for actual in-car experience w/ it. I also want to know about its spool characteristics since it has a larger a/r and turbine wheel than other 50 trims (i.e. pte).

 

[sweet97]

I guess nobody is really using this turbo yet. I am looking for actual in-car experience w/ it. I also want to know about its spool characteristics since it has a larger a/r and turbine wheel than other 50 trims (i.e. pte).

What a/r are you speaking about? It would have to be the cold side. My AGP RS49 had a .60a/r for the cold side amnd a T-31 turbine wheel aka stage 3. The a/r of the turbine has never been given out to the public. Iwas told that Bullseye, who makes the turbine, likes a bigger wheel in a smaler turbine housing, that was all I could get.
I did not have any problem with the spool and I did not have a good FMIC until the end before I sold my RS49, which really opened up the spool. So be sure to have a good FMIC.
The RST's are made by turbonetics with Bullseye turbines. The RS49's are garretts with the same Bullseye turbine housing. Both versions have a TO4E cover, the difference one being a Turbonetics and the other a Garrett. Mark

 

[FourG63 97GST]

I have the internal RS49T
I have no creep issues, I hit 20psi at about 3700rpms. and it holds it to redline.
actually I lose about 1.5psi by redline but my profec B isn't yet set right. but no creep

 

[oldman]

yeah, but 13 or 17 aint nothing on a 50 trim. Car will barely move at those boost levels. When I'm trying to tune for 24psi i dont want it to creep to 26 or 27.

If it only creeps to 17 when set at 13, it will not creep when you set it at 24psi. Or else it would have creep over 24psi (or whatever the max boost of the particular turbo is) when it was set at 13psi. Basically the lower you set the boost the worst the creep.

 

[311GSX]

I had creep issues on my rs49 and agp told me I needed to port the wastegate hole on my brand new turbo I thought I shouldn't need to work on something I just bought to make it work right , good luck

 

[autronicDSM]

Why would any one buy this turbo and run less then 20 psi? That's so asinine.

 

[Turbocharged]

I am able to run as low as 15 psi on my rs49t. I port matched the wastegate side of the turbo to my tubular o2 housing. I also took a little off the actuator arm for the flapper to allow it to fully open (otherwise the arm hits the turbine housing).

People do run less than 20 psi for a reason. I installed the turbo 2 weeks ago and have a massive boost leak at the intake manifold. If I run higher than 15 psi I get insane knock. I dont want to blow up the motor or ruin the turbo. The leak will be fixed in the next few weeks.

 

[madman]

i just bought the rs49, not the turbonetics one, but its the same thing.

I noticed the wasteflaper doesn't open all the way. Im going to port it out so it does open all the way. shit opens like its a 14b exhaust housing. Looks like it would creep to me.

I'm about to install mine next month and was wondering about this same thing.

I called AGP and they told me it was not necessary to port the wastgate opening.

Does anyone have an oppion that has ported it? Did it make any difference? How much do
you port, till it opens at 90*?

 

[bfdahl]

I have one and i dont think there is a need to port it at all.

I use a profec B and i will hold 15 psi no problem.

 

[Turbocharged]

I'm about to install mine next month and was wondering about this same thing.

I called AGP and they told me it was not necessary to port the wastgate opening.

Does anyone have an oppion that has ported it? Did it make any difference? How much do
you port, till it opens at 90*?

See post #15. Yes, it was worth it my case and only took a few minutes. Just remove enough material so that the arm opens completely. I had to port match because I have a tubular O2 housing.

 

[Stratus]

I didn't port mine and I have no creep at all. I've held as low as 10-11 psi with no creep. I do have an o2 dump, though.

 

[90blacktsiawd]

i hope so, ### all I'm used to is boost creep on my car, . I'll be running an o2 dump and i'm porting out the space behind the wastegate flapper, so hopefully i'll be good to go. IF that doesn't do it, ill switch to external gate.

Make sure you check the wastegate flapper movement with the o2 housing attached. I had to do some grinding on mine so the falpper arm wouldn't hit the flange and then alittle on the inside so the flapper could open all the way to 90 degrees.

 

[project_tsi]

I had an internally gated g50, basically a rs49. It crept from 24 to 28 psi.

 

[madman]

Could there be any adverse side affects of porting the wastegate opening?

 

[BrokenTsi]

I ran my rs49 for a whole season. I ported the wastegate hole and everything. All it would do is creep. I went external wastegate, problem solved.

After that turbo blew up, I went with an rs60.

After I blew that one up, I'm all T3 style now with no regrets.

 

[RotaryRyan]

I have the internal RS49T
I have no creep issues, I hit 20psi at about 3700rpms. and it holds it to redline.
actually I lose about 1.5psi by redline but my profec B isn't yet set right. but no creep

GOOD INFO HERE!!

I also have this turbo. I get about the same thing.

 

[FourG63 97GST]

GOOD INFO HERE!!

I also have this turbo. I get about the same thing.

well that almost a year ago, for the past 2-3 months the flapper has been blowing open, I get about 15-16psi max, I've then spend about $700 switching to external, so In the long run, I didn't really save any money going with an internal wastegate in the first place
oh well, live you learn