Jump to content
SAU Community

New Internal Gated T3 Housings.

simpletool

By simpletool,
in Engines & Forced Induction

 Share

Recommended Posts

Cubes Grand Master

Cubes

Posted
Posted

3lit3 32,

They also have the .63, .82 internal gate now also. ;)

Have a look through the thread, disco posted a few pics of the .82 and skinny .63 internal gate gt35r turbine housings. He grabbed the pics from GCG.

http://www.skylinesaustralia.com/forums/in...=134033&hl=

GT35r .63

and the .63 int wastegate

GT35R .82

and the .82 int wastegate

Unsure if the int gate gt30's turbine housings from 'garrett' are floating around yet or not.

The Dan Grand Master

The Dan

Posted
Posted
3lit3 32,

They also have the .63, .82 internal gate now also. ;)

Have a look through the thread, disco posted a few pics of the .82 and skinny .63 internal gate gt35r turbine housings. He grabbed the pics from GCG.

GT35r .63

and the .63 int wastegate

GT35R .82

and the .82 int wastegate

Unsure if the int gate gt30's turbine housings from 'garrett' are floating around yet or not.

Yeah I know all the different models available, my rep showed me all samples the day the turbo was available. They are a great setup but you still have to go to the trouble of changing the dump, oil and water hoses and intake. The only difference is you save money on not having to buy an external wastegate. They are limited in their flow and response due to the internal gated setup but make for a great upgrade on the 25's. Definately wouldn't recommend one of these on a 20 unless you have some major port work and other head work done.

If anyone is chasing one of these turbo, let me know. I should be able to beat anyone's price.

Cubes Grand Master

Cubes

Posted
Posted

How does internal gate reduce response?

dangerman4's gt35r appears to be doing quite well on his rb25 with an auto sitting behind it. Spools damn well, considerably better than I expected. We saw 5psi at 3000rpm and its all in by 4200rpm!!

But yes the GT30 is the limit for the RB20 I feel.. GT35r is simply too big.

discopotato03 Grand Master

discopotato03

Posted
Posted (edited)

I imagine the only way any waste gate could affect the spool phase is it were not sealed shut . All the exhaust gas needs to be going through the turbine at this stage to get it up to speed .

How well the IW performs I don't know , it seems obvious that the lower the exhaust housing AR the sooner boost pressure should reach the actuators opening pressure and open the valve (assumes all else engine wise being equal ) .

The XR6's turbo actually used a smaller series ie TO4E rather than TO4S comp cover/backplate probably because Ford wanted to artificially limit how much air the compressor could pump and make the waste gate regulator (actuator) very sensitive . It was after all a low boost OEM application .

So they use a large exhaust housing AR (1.06) and a smaller series comp cover in only .50AR to limit airflow . Under these conditions the IW seemed to work ok on a 4L six .

As I've said in the past I would not use the .63AR exhaust housing on a GT3076R or a GT3582R because the exhaust restriction , once it gets going , eventually cancells out the advantage of the high flowing large trim compressors in both cases . Some unique cases such as the real GT3071R would be ok with a 63 housing but thats because they use a smaller (71mm vs 76mm) compressor and need the revs (turbo) to make them work .

Also you may never see them but bush bearing Garrett GT turbos such as the GT3571 and GT3576 may end up with them though diesel app generally like larger exhaust housing AR's .

The way I see it the limitation of most production waste gates is trying to get the exhaust gas to turn 90 degrees and bugger off out through the hole in the side of the housing . The higher the gas speed is

the less it wants to know about doing the exit stage left . Corky Bell talks about the same sort of thing in the exhaust manifold section of his book Maximum Boost though thats to do with Ext gate placement on manifolds . If you can size your turbo right ideally the waste gate is only bleeding off enough exhaust gas to regulate the turbine /compressor speed to maintain a set boost pressure . If your engine breathes properly the boost pressure may not need to be super high and the exhaust manifold pressure should also be lower and the velocity also so the integral gate stands a much better chance of controlling it .

Cheers A .

Edited by discopotato03

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • The Bogan
      Magnetic Drain Plug Snapped in Half

      By The Bogan · Posted

    • kevboost7
      Magnetic Drain Plug Snapped in Half

      By kevboost7 · Posted

      Update: I got the magnet out. I bought 3 different flexible magnetic reach tools, but none of them worked. The magnet on the tip was all less than 2lbs of force, so i had to buy a special cylindrical magnet that had a pull force of 9lbs.  The magnet finally came in the mail yesterday, so i got under the car to get to work. The super strong magnet isn't that long, so i only have about 1 finger pinch lengths to hold it. I was so scared when i was going in the hole, that the 9lb magnet would just fly away inside the oil pan never to be seen again, but i had my butt cheeks clenched and finger gripped on that thing so tight, i managed to get it to suck the other magnet out.  It was a victory for me last night.         
    • MBS206
      New fix for low tyre pressure from bmw

      By MBS206 · Posted

      Yep, pretty much what you said is a good summary. The aftermarket thing just attached to the rim, then has two lines out to valve stems, one to inner wheel, one to outer wheel. Some of the systems even start to air up as you head towards highway speed. IE, you're in the logging tracks, then as speeds increase it knows you're on tarmac and airs up so the driver doesn't even have to remember. I bet the ones that need driver intervention to air up end up seeing a lot more tyre wear from "forest pressures" in use on the highway!
    • sunsetR33
      Anyone know this frontpipe?

      By sunsetR33 · Posted

      Yes, but you need to do these type certifications for tuning parts. That is the absurd part here. Meaning tuning parts are very costly (generally speaking) as well as the technical test documentation for say a turbo swap with more power. It just makes modifying everything crazy expensive and complicated. That bracket has been lost in translation many years ago I assume, it was not there.
    • dbm7
      New fix for low tyre pressure from bmw

      By dbm7 · Posted

      Hahaha, yeah.... not what you'd call a tamper-proof design.... but yes, with the truck setup, the lines are always connected, but typically they sit just inside the plane of the rear metal mudguards, so if you clear the guards you clear the lines as well. Not rogue 4WD tracks with tree branches and bushes everywhere, ready to hook-up an air hose. You can do it externally like a mod, but dedicated setups air-pressurize the undriven hubs, and on driven axles you can do the same thing, or pressurize the axles (lots of designs out there for this idea)... https://www.trtaustralia.com.au/traction-air-cti-system/  for example.... ..the trouble I've got here... wrt the bimmer ad... is the last bit...they don't want to show it spinning, do they.... give all the illusion that things are moving...but no...and what the hell tyre profile is that?...25??? ...far kernel, rims would be dead inside 10klms on most roads around here.... 😃
×
×
  • Create New...