HolyCrapItsFast
Drinks beer!
DOOO eeet!
GD The BAD STI.... It has been a good run.
- Thread starter BAD STI
- Start date
It has been done....
Now in order to teach my great teacher (George) how to use the admin control panel he must figure out how to change his avatar back to this:
Take your time George. There's no rush. The only thing thats on the line is Fuj having a gay avatar. :lol: Don't forget to enable Fuj's ability to edit his avatar also.
Now in order to teach my great teacher (George) how to use the admin control panel he must figure out how to change his avatar back to this:
Take your time George. There's no rush. The only thing thats on the line is Fuj having a gay avatar. :lol: Don't forget to enable Fuj's ability to edit his avatar also.
I like the avatar I put up better. And yes, it is that kind of day. Three weekends in a row of working. Someone is going to get fucked up!
Wait... How'd you override my avatar lock out.... Making you a super mod must have given you unforeseeable powers....
Nooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo!
I'm drunk as fuck. Franzia FTW. I'm going to finish this 5L box.
bugeye_fever
New member
Hey, I don't want to goon up your thread to much, but I was just poking around on the blouch website, seems they have a 20g-xt r out now with a bb center section. Is this news to you? what do you think about it? Thanks, have a good franzi.. friday night!
HolyCrapItsFast
Drinks beer!
It has been done....
Now in order to teach my great teacher (George) how to use the admin control panel he must figure out how to change his avatar back to this:
Take your time George. There's no rush. The only thing thats on the line is Fuj having a gay avatar. :lol: Don't forget to enable Fuj's ability to edit his avatar also.
I have already used my powers for evil once. I'm the one that punked evorulesyourworld's avatar
.I'm just so gosh darn exhausted right now though... It could be a while :tard:
Interesting! This is news to me.
IMO the price difference isnt justified.
...also they're rated at less power.
http://www.bptstore.com/Subaru-WRXSTi-20G-XT-R-Turbocharger-_p_122.html
Its hard to tell with out a dyno or compressor chart to compare.
I have already used my powers for evil once. I'm the one that punked evorulesyourworld's avatar
I'm just so gosh darn exhausted right now though... It could be a while :tard:
:lol: No worries. Fuj figured it out.
bugeye_fever
New member
Did some looking over on nabisco and found this in the 20gxt thread from blouch:
Just some info
BPT Journal bearing 20G-XT
68mm 47lb per min compressor
11 blade 62mm Turbine wheel
MHI Journal Bearing CHRA
BPT-20G-XTR
68mm 44lb per min Compressor (We lowered the HP rating because of the smaller turbine)
Garrett Full Ball Bearing CHRA with 56.5mm turbine wheel
mike
Pretty interesting, might have been geared more for a 2.0, I don't know.
Just some info
BPT Journal bearing 20G-XT
68mm 47lb per min compressor
11 blade 62mm Turbine wheel
MHI Journal Bearing CHRA
BPT-20G-XTR
68mm 44lb per min Compressor (We lowered the HP rating because of the smaller turbine)
Garrett Full Ball Bearing CHRA with 56.5mm turbine wheel
mike
Pretty interesting, might have been geared more for a 2.0, I don't know.
Ahhh the turbine wheel size does make since.
IMO the 20G-XT spools great with thw 2.5. I'd go that route.... wait I mean I went that route.
bugeye_fever
New member
Yeah, makes me wonder though. If its the same compressor wheel, then if you put a larger ewg on it, like a tial 44, wouldn't that make up for the smaller turbine and give you the same power potential as the orginal xt? I would consider doing this just out of curiousity, as our builds will be quite similar. I'm not looking for outright power, and the extra response might be nice. Well, I've got 5 months 'till I deploy, and another 6 to start ordering. Surely in that amount of time we'll see some more info come out on these.
Nope. An EWG doesnt really make up for the turbine size. They can help with boost control in situations where the IWG isn't able to flow enough.
bugeye_fever
New member
Hmm, i'm not completely straight one this yet I guess. I thought the purpose of putting an ewg on a turbo with a small turbine was in addition to more accurate boost control, to allow for more exhaust flow around the turbine than an iwg can flow, lowering the back pressure caused by the small turbine. Also allowing the turbo to stay in its efficiency range longer. I was thinking that this was the reason why and ewg could hold power longer on the top end.
Maybe I don't really need a big external, just a 38mm would be fine. It just confusses me why they'd say the compressor wheel won't flow as much in this new turbo when its the same wheel. Maybe.. i should stop making my head hurt and just get a 20g-xt.. lol
Maybe I don't really need a big external, just a 38mm would be fine. It just confusses me why they'd say the compressor wheel won't flow as much in this new turbo when its the same wheel. Maybe.. i should stop making my head hurt and just get a 20g-xt.. lol
I feel the back pressure does play a role but its much smaller than the benefits of the increase in boost control.
This is from Garrett's site:
Turbine A/R - Turbine performance is greatly affected by changing the A/R of the housing, as it is used to adjust the flow capacity of the turbine. Using a smaller A/R will increase the exhaust gas velocity into the turbine wheel. This provides increased turbine power at lower engine speeds, resulting in a quicker boost rise. However, a small A/R also causes the flow to enter the wheel more tangentially, which reduces the ultimate flow capacity of the turbine wheel. This will tend to increase exhaust backpressure and hence reduce the engine's ability to "breathe" effectively at high RPM, adversely affecting peak engine power.
The reduced back pressure form an EWG would mitigate some of this effect... But I doubt an amount great enough to compensate for a smaller turbine.
I'd like to here George's thoughts on this.
HolyCrapItsFast
Drinks beer!
I think one of the reasons why it offers better turbo control is the fact that an EWG allows for better flow around the turbine, blade but you can't escape physics. The turbine/housing combination will flow only what it's physical dynamics allows and no waste gate configuration can change that. I also believe that the back pressure caused by a smaller turbine is not a function of the wastegate except when the waste gate itself is operating. Again you can't change the dynamics of the turbine and what it is, is what it is.
I would actually like to hear from turbineguy. This is right up his alley! I actually don't really know what I'm talking about when it come to turbo dynamics. I'm just drawing on what makes sense to me as an engineer.
P.S. I'm glad spell check exists... I had 16 wrongly spelled words before I submitted this. :lol:
Trunk spare tire delete?
HolyCrapItsFast
Drinks beer!
95* and 80% humidity today buy me and i spent yesterday and today on a black top driveway putting a motor in my car... You can do a few brush strokes you light weight! :lol:
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