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What turbo upgrade for stock converter?

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ANDYS87

Member
Joined
Jun 14, 2005
Messages
405
I'm thinking of upgrading my turbo...but dont want to go nuts. Would like stock appearing/fit and must work well with the stock torque converter. Is the TA-49 the way to go? Can this take the car into the mid 11's?
 
There will be a new 60/62 coming out that will be the new super street turbo for us IMO. The billet comp wheel will allow it to spool like the TA49 ( 58mm wheel ) and yet the new aerodynamics of the wheel will flow somewhere around a 65mm turbo ( 65 exhaust wheel will help this turbo flow more ). Easy mid 11's on low 20psi of boost on a moderately modded GN.

Stick it in the PTE .63 and make sure you have the fuel system to keep up. :cool:

If that is too much, there will be a billet 58 that will spool faster and still make more power than the 49. The 49 turbo is dead now IMO.
 
49 or TE44 (not stock appearing) work well from what i've read. I too would like to move up from the stock turbo but want to choose something new, even ball bearing if it makes a difference:cool:
 
Turbo choice

I put in a 6157 with the .62 housing. It spools about the same as my old 49 with a .8 housing. My torque converter is a restalled D5 (about 2500 RPM).
Very nice for me, and it is stock appearing.
 
I still have the TA 49 turbo on my GN, with the stock torque converter, even with the PTE 63 housing it spools up quick. I'm waiting for this one to show signs of problems before I change it out for another.
 
The 44 with a Garrett .63 ex housing is a good choice for the stock converter if you plan on turning up the boost. Otherwise ball bearing will be needed.
 
I have a ballbearing S-cover 6157 which I like alot with the stock converter.
 
andy87,a ta49/or44 with a tight garret .63 housing or a gt3255 will be get the job done.the new billet wheels should be released soon but they don't know how much power they will make on a buick,not to mention they are a very expensive turbo inmo,also repairs won't be cheap on them if they break.
 
dr boost,my ta49 car when run at 20psi with the garret .63 has been 11.58-11.61;)
 
The smaller billet wheels are under $1k and it's a Ball Bearing Turbo that is expensive if you destroy it, not the regular journal bearing turbo.

Journal bearing, Billet 58 will be the new TA49 destroyer. :cool:

FWIW, any billet comp turbo with the 65 exhaust wheel is making power like a turbo 5 wheels bigger and spooling like a turbo 1 size smaller. Go to the 62 exhaust wheel and gain a slightly better spool but lose some top end power.
 
lots of vendors here selling the old teck 44/49 turbo's that have proven 10 second ability for 595 nearly half of what the billet wheels cost.inmo if one is going to stay that small on the turbo spend the saving between the 2 and spend it in other areas that can potentially maximize the car.now step it up with a bigger wheel and i would personally want the ball-bearing option to get as close to the quick spool of the smaller wheel that the big one replaced now your really getting into $$ for just the turbo which is a piece of the puzzle when trying to make power.
 
How is $600 half of $850??
Hartline was selling the Billet 62 at that price and it spools around an old 60 and has the power of the old 67mm. The smaller Billet 58mm's could be a tad cheaper than $850 when they come out making it a no brainer.

If you destroy a ball bearing you need to replace the WHOLE cartridge, and BB doesn't make the wheel more powerful, only spool up faster. So BB an older turbo is a HORRIBLE idea with Billets coming out.
 
FWIW, any billet comp turbo with the 65 exhaust wheel is making power like a turbo 5 wheels bigger and spooling like a turbo 1 size smaller.
Do you have any proof of this? This is highly doubtful based on the numbers ive seen posted here and on other import forums based on the operating range of the engine. This claim is even more doubtful if the 65 wheel is in a 3 bolt Buick ex housing. You arent gaining anything on the exhaust side going billet. Still plagued by excessive backpressure. Id like this claim to be true. Please post the proof as related to the Buick applications including 4 bolted if you have it.
 
i was told when i called hartline per. $1009 on the journal and 1260 on the dbb 62/62,with the 62/65 dbb at 1399 just a few weeks ago perhaps things have changed?and on the dbb you must run the water lines therefore raising the price further.it was my understanding that nobody knows to my knowledge what these wheels will make on a buick perhaps you can shed some light dr booster?
 
I put in a 6157 with the .62 housing. It spools about the same as my old 49 with a .8 housing. My torque converter is a restalled D5 (about 2500 RPM).
Very nice for me, and it is stock appearing.

6157 is a TE style,stock is a TA style..just thought you'd like to know that incase you want a stock appearence. Inlet bell is 1 peice instead of 2:smile:
 
that thread raises more questions in my mind:rolleyes: i feel there are to many variables, from the cam swaps, to boost levels, to which housings were used, not to mention the tests weren't done on buicks.don't get me wrong,i think the billet wheels are cool just to much coin for a piece thats unproven.
 
Variables, did you read the setup? Same everything except the turbo sizes. Same T3 housing, same mods, same boost etc, they're both PTE turbo's. You'll NEVER find a GN vendor do this for us so you'll have to take what you can get concerning the new turbo's vs old turbo's.

Yes it's not a GN, but it proves how a platform responds to the different turbo's and accurately shows it's traits. Spools faster, makes more low and mid power with a tad up top.

Everyone's always looking for definitive dyno graphs, well you're not going to find them in the GN world since our vendors don't dyno parts for us. We've been going off vendors words and then what other board members have done at the track for years. While good, not nearly as definitely as a test AMS did. :(

Sorry for slanting this thread into never land, but I'd not waste the $$ on an old turbo after seeing dyno graphs like the above vs older turbo's.

Billet 58 will DESTROY the TA49 and TE44 turbo.
 
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