RE: So you've decided to go BT
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RE: So you've decided to go BT - 3/5/2008 10:48:14 PM
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Leifer
Posts: 985
Joined: 9/30/2007
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T3/T4 50trim .48a/r or .62?
.48 = faster spool time, less power (still considerable though) carried through redline
.62 = slower spool time, but a monstrosity at higher RPMs
440cc/630cc Injectors, 3" MAF, CTapp tuning, 3" TIP, new oil lines, and fuel pump.
I'm too lazy to type out the prices, partially because I don't know them well enough to say them. Your 3" TIP should be done custom; go to an exhaust shop and have them custom-bend a steel straightpipe for you, that way you can be 10190358019385019385% sure it won't cave in, and there's no beating around the unbelievable airflow. Plus, they can drill holes and **** for you. It'll save you a big headache!
YI believe I've covered it all... if not, Brian will fill it in for me!
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A4 1.8 CuTie
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Automotive role-playing sex:
quote:
sean1.8T
my buddy would hold the nuts from the top. and i would ratchet them out from the bottom.
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RE: So you've decided to go BT - 3/6/2008 2:55:39 PM
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chaos92287
Posts: 8048
Joined: 8/29/2006
From: Ft. Lauderdale/ Tallahassee, FL
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its a .63 not .62 and you need a 4" MAF if your going with Ctapp 630cc.
t3t4 625
manifold 150+
CTapp 700
injectors 250
afpr 150
mbc 100
fuel pump 100
intake 100
maf 30
mounts 285
clutch 500
fmic 300-1k+
fpr, injectors, and MAF will all be decided by what tune you get, so dont get those till you decide on which tune your going with
< Message edited by chaos92287 -- 3/6/2008 3:02:59 PM >
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RE: So you've decided to go BT - 3/6/2008 6:26:27 PM
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Leifer
Posts: 985
Joined: 9/30/2007
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Haha this is like the third time I've said .62a/r, yeah? Oh well, I'm over it. I was very tired when I wrote that message, hence the incomplete, half-ass post.
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A4 1.8 CuTie
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Automotive role-playing sex:
quote:
sean1.8T
my buddy would hold the nuts from the top. and i would ratchet them out from the bottom.
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RE: So you've decided to go BT - 3/6/2008 7:19:46 PM
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cincyTT
I can make pigs fly
Posts: 14890
Joined: 12/14/2006
From: No longer Ohio
Status: online
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T25 = .64 and .86
T3 = .48, .63 and .82
Yes, they do go bigger but way to big for a 1.8t. All t25 housing should be a .64 since it is best suited for the 1.8t. YOu can use a .86 on a gt28rs and gt2871r but they will be laggy. The .48 T3 housing should only be installed on a 50trim, gt28rs and gt2871r. The .63 housing should be use for all gt30 turbos (unless you already have a t25 turbo and manifold) and the smallest turbo you should use a .82 housing on is a gt3076r. Expect about 500rpms of lag for the larger housing, however you will get a greater top end and smoother powerband.
Also remember that the T3 flange is larger than the T25 so it flows more, also the t3 housings flow better also.
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FACTS > followers
197whp and 292wtq with no chip on stock ic, airbox and catback
AEG crank +Scat rods + 83mm Wiseco pistons = CincyTT Version 2.0T
For sale - 20mm wrist pin pistons and rods $175 + sh
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RE: So you've decided to go BT - 3/6/2008 9:26:54 PM
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Leifer
Posts: 985
Joined: 9/30/2007
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Cincy, if you have a .86 on a gt28rs, does the power carry through redline? I'm wanting something that's smoother and provides a nicer distribution of power. I absolutely LOVE turbo lag, too.
I know that a/r doesn't affect compressor performance, but it'll decrease backpressure at higher RPMs, given the larger housing size, so more power can be carried through.
_____________________________
A4 1.8 CuTie
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Automotive role-playing sex:
quote:
sean1.8T
my buddy would hold the nuts from the top. and i would ratchet them out from the bottom.
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RE: So you've decided to go BT - 3/6/2008 9:42:38 PM
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cincyTT
I can make pigs fly
Posts: 14890
Joined: 12/14/2006
From: No longer Ohio
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It will have a smoother powerband like you need. The power will still drop off before redline, but not as much. However since you have a girly tip, you might not want a laggy turbo since you cant control when the car shifts.
_____________________________
FACTS > followers
197whp and 292wtq with no chip on stock ic, airbox and catback
AEG crank +Scat rods + 83mm Wiseco pistons = CincyTT Version 2.0T
For sale - 20mm wrist pin pistons and rods $175 + sh
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RE: So you've decided to go BT - 3/6/2008 9:46:51 PM
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Leifer
Posts: 985
Joined: 9/30/2007
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quote:
ORIGINAL: cincyTT
since you have a girly tip, you might not want a laggy turbo since you cant control when the car shifts.
I never ever drive without putting it in tiptronic mode. Ever. I shift when I want!
Okay, now that we've been past that, would you still recommend a smaller a/r so I can utilize my torque range efficiently? I don't want something that'll surge and put a lot of stress on the TCC all at once.
_____________________________
A4 1.8 CuTie
--
Automotive role-playing sex:
quote:
sean1.8T
my buddy would hold the nuts from the top. and i would ratchet them out from the bottom.
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RE: So you've decided to go BT - 3/6/2008 9:58:06 PM
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cincyTT
I can make pigs fly
Posts: 14890
Joined: 12/14/2006
From: No longer Ohio
Status: online
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A gt28rs wont surge with either housing. A .64 will hit full boost ~3.2k and the .86 closer to 3.7k (increase housing is usually 500rpms). You will make boost before that, just not peak 20+ until then.
_____________________________
FACTS > followers
197whp and 292wtq with no chip on stock ic, airbox and catback
AEG crank +Scat rods + 83mm Wiseco pistons = CincyTT Version 2.0T
For sale - 20mm wrist pin pistons and rods $175 + sh
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RE: So you've decided to go BT - 3/6/2008 10:08:45 PM
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Leifer
Posts: 985
Joined: 9/30/2007
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Does the RPM rule generally apply to the range of power that's carried through redline? IE you have more power before succumbing to backpressure by 500rpm in the high-end too? If not, I wouldn't mind waiting another 500rpm to experience a broader range of power in the long-run.
Y'know, you should consider hopping on AIM if you can 
_____________________________
A4 1.8 CuTie
--
Automotive role-playing sex:
quote:
sean1.8T
my buddy would hold the nuts from the top. and i would ratchet them out from the bottom.
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RE: So you've decided to go BT - 3/6/2008 10:25:58 PM
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cincyTT
I can make pigs fly
Posts: 14890
Joined: 12/14/2006
From: No longer Ohio
Status: online
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With a larger housing you are pushing back peak tq and will have more hp up top. You should see about 10-15whp gain on the same psi.
_____________________________
FACTS > followers
197whp and 292wtq with no chip on stock ic, airbox and catback
AEG crank +Scat rods + 83mm Wiseco pistons = CincyTT Version 2.0T
For sale - 20mm wrist pin pistons and rods $175 + sh
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RE: So you've decided to go BT - 3/6/2008 10:47:08 PM
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Leifer
Posts: 985
Joined: 9/30/2007
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I noticed you ignored the second part of my response. 
Anyways, I'm going to figure some stuff out between the t3t4 turbo that I wanted (57trim .63a/r) and this GT28RS. I'm not even sure which I want to start building my car for, but I guess my decision can wait. It'll be at least 2-3 months. Is it safe to assume the builds are going to be somewhat similar? IE the MAF, turbo inlet, injectors (based on software... is there 630cc software for the gt28rs?)
_____________________________
A4 1.8 CuTie
--
Automotive role-playing sex:
quote:
sean1.8T
my buddy would hold the nuts from the top. and i would ratchet them out from the bottom.
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RE: So you've decided to go BT - 3/6/2008 10:53:06 PM
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cincyTT
I can make pigs fly
Posts: 14890
Joined: 12/14/2006
From: No longer Ohio
Status: online
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Yes, it will work with both. I am doing other things and dont have the time to hop on there
_____________________________
FACTS > followers
197whp and 292wtq with no chip on stock ic, airbox and catback
AEG crank +Scat rods + 83mm Wiseco pistons = CincyTT Version 2.0T
For sale - 20mm wrist pin pistons and rods $175 + sh
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RE: So you've decided to go BT - 3/6/2008 11:09:56 PM
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Leifer
Posts: 985
Joined: 9/30/2007
Status: offline
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It's okay, I'm thankful you're helping me at all. I know I hassle you a lot, but there's just some **** I can't figure out unless it's put in different words haha. I need to learn this stuff by myself anyways.
Good thing I can now ask your mini-me, Brian, for help too. 
_____________________________
A4 1.8 CuTie
--
Automotive role-playing sex:
quote:
sean1.8T
my buddy would hold the nuts from the top. and i would ratchet them out from the bottom.
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RE: So you've decided to go BT - 3/6/2008 11:18:47 PM
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cincyTT
I can make pigs fly
Posts: 14890
Joined: 12/14/2006
From: No longer Ohio
Status: online
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know your place Brian!!
< Message edited by cincyTT -- 3/6/2008 11:47:42 PM >
_____________________________
FACTS > followers
197whp and 292wtq with no chip on stock ic, airbox and catback
AEG crank +Scat rods + 83mm Wiseco pistons = CincyTT Version 2.0T
For sale - 20mm wrist pin pistons and rods $175 + sh
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RE: So you've decided to go BT - 3/6/2008 11:21:56 PM
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Leifer
Posts: 985
Joined: 9/30/2007
Status: offline
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quote:
ORIGINAL: chaos92287
lol mini-me?
I mean that in a good way. Who doesn't want to know as much as Nate?
Before I left for my two-month break not too long ago, I didn't really view you as someone who stood out from the crowd, in terms of knowledge and helpfulness. So don't take it the wrong way!
_____________________________
A4 1.8 CuTie
--
Automotive role-playing sex:
quote:
sean1.8T
my buddy would hold the nuts from the top. and i would ratchet them out from the bottom.
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RE: So you've decided to go BT - 3/6/2008 11:37:31 PM
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chaos92287
Posts: 8048
Joined: 8/29/2006
From: Ft. Lauderdale/ Tallahassee, FL
Status: offline
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quote:
ORIGINAL: cincyTT
No your place Brian!!
learn to spell!!
quote:
ORIGINAL: Leifer
quote:
ORIGINAL: chaos92287
lol mini-me?
I mean that in a good way. Who doesn't want to know as much as Nate?
Before I left for my two-month break not too long ago, I didn't really view you as someone who stood out from the crowd, in terms of knowledge and helpfulness. So don't take it the wrong way!
guess my newbie guide and thousands of posts answering questions didn't count for anything
when i bought this car ~1.5 years ago i didn't even know what a turbo was lol. i've learned a LOT on these forums, especially since Nate joined. so im grateful and just trying to help spread the knowledge
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NOOBS CLICK HERE
http://ganja-grove.myminicity.com/sec
http://ganja-grove.myminicity.com/ind
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RE: So you've decided to go BT - 3/6/2008 11:42:20 PM
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cincyTT
I can make pigs fly
Posts: 14890
Joined: 12/14/2006
From: No longer Ohio
Status: online
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Sorry.... know.... better? Its late and im doing a Turbo guide for the TT section. Not to mention i remember putting a lot of red marks on that newbie guide
_____________________________
FACTS > followers
197whp and 292wtq with no chip on stock ic, airbox and catback
AEG crank +Scat rods + 83mm Wiseco pistons = CincyTT Version 2.0T
For sale - 20mm wrist pin pistons and rods $175 + sh
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