Which turbo is best? - Page 3

dylansword · 08-05-2011, 03:18 PM

Does anyone know how much boost you can get out os a 57 trim ct26?

El Supracabras · 08-05-2011, 05:17 PM

That is a question I would ask the supplier of the turbo. They would be able to tell you much more accurately what the max recommended pressure for their turbocharger would be.

MA70-3.0GT · 08-07-2011, 03:20 PM

Quote:

Originally Posted by El Supracabras

That is asking alot from a stock ct26 don't you think?

Well, I ran what I believed to be the stock CT26 up at 11psi for just over a year (and the shaft already had more than spec'd play when I got the car with it's BHG). I expected it to last a few hundred miles before the smoke started but in the end it lasted over 10k miles & was still boosting strong & smoke-free when a failed BOV signal pipe that killed it in one fell swoop of surge...

That said looking at pics now I'm not so sure it was a stock supra CT26, compressor housing looks too big.

cre · 08-07-2011, 09:38 PM

PSI doesn't mean all that much when it comes to turbo selection... Actually, it means very little. Think about the difference between a 6' tall industrial air compressor vs a small bicycle tire pump... both may be able to handle 150psi but the bike pump is going to have to work its ass off to fill the same size tank that the larger compressor could fill in a couple seconds.

Without getting into all of the specifics I'll just say that a CT-26 with an upgraded compressor will work quite well for what you want while maintaining a bolt-on setup and quick spool. 57 trim will run efficiently past 350RWHP.

dylansword · 08-09-2011, 03:41 AM

Thanks very much!

dylansword · 08-09-2011, 04:17 AM

Any one have anything to say about this t61?

http://www.cxracing.com/mm5/merchant...t_Code=TRB-T61

Mk3FirstCar-Mike · 08-09-2011, 04:46 AM

Just my two cents here, but I'd try to find one with about a .7-.8 A/R, ball bearing and (external) wastegate. Ball bearing turbos are more durable than journal bearings. That turbo is a fairly good size for street driving, though. It should spool up nice and quick. The only thing that's stopping me from liking it is the internal wastegate and not knowing who makes it.

- Other than that, for the horsepower you're wanting, it should do just fine.

dylansword · 08-09-2011, 05:01 AM

I don't want to sound stupid, but what's the differenct between internal and external wastegate? I see a wastegate on both of them. Is the boost still adjustable? Thanks very. Much

Mk3FirstCar-Mike · 08-09-2011, 05:53 AM

Don't worry about feeling stupid; I'm stupid 70% out of the day. Anyhoo, external wastegates are more precise and more responsive. They're also easier to work on and provide slightly less backpressure, IIRC.

Also, internal wastegates CAN be tuned, but you can't tune them below a certain boost pressure. However, they can be tuned up by using a boost controller.

dylansword · 08-09-2011, 04:37 PM

Okay, so there still good, just not for getting big numbers, and super precise tuning? One of my buddies has a t3 that he'd sell me for cheap. Anyone ever used one? Any recomindations?

08-07-2011, 09:38 PM	#24
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	PSI doesn't mean all that much when it comes to turbo selection... Actually, it means very little. Think about the difference between a 6' tall industrial air compressor vs a small bicycle tire pump... both may be able to handle 150psi but the bike pump is going to have to work its ass off to fill the same size tank that the larger compressor could fill in a couple seconds. Without getting into all of the specifics I'll just say that a CT-26 with an upgraded compressor will work quite well for what you want while maintaining a bolt-on setup and quick spool. 57 trim will run efficiently past 350RWHP. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

08-09-2011, 04:17 AM	#26
dylansword 3" Exhaust Join Date: Jan 2010 Location: boise id Posts: 50	Any one have anything to say about this t61? http://www.cxracing.com/mm5/merchant...t_Code=TRB-T61 Last edited by dylansword; 08-09-2011 at 04:34 AM.

08-09-2011, 04:46 AM	#27
Mk3FirstCar-Mike 3" Exhaust Join Date: Jul 2011 Location: Titusville, PA Posts: 54	Just my two cents here, but I'd try to find one with about a .7-.8 A/R, ball bearing and (external) wastegate. Ball bearing turbos are more durable than journal bearings. That turbo is a fairly good size for street driving, though. It should spool up nice and quick. The only thing that's stopping me from liking it is the internal wastegate and not knowing who makes it. - Other than that, for the horsepower you're wanting, it should do just fine. Last edited by Mk3FirstCar-Mike; 08-09-2011 at 04:51 AM.

08-09-2011, 05:53 AM	#29
Mk3FirstCar-Mike 3" Exhaust Join Date: Jul 2011 Location: Titusville, PA Posts: 54	Don't worry about feeling stupid; I'm stupid 70% out of the day. Anyhoo, external wastegates are more precise and more responsive. They're also easier to work on and provide slightly less backpressure, IIRC. Also, internal wastegates CAN be tuned, but you can't tune them below a certain boost pressure. However, they can be tuned up by using a boost controller. Last edited by Mk3FirstCar-Mike; 08-09-2011 at 06:20 AM. Reason: Typo - More Information Added

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08-05-2011, 03:18 PM	#21
dylansword 3" Exhaust Join Date: Jan 2010 Location: boise id Posts: 50	Does anyone know how much boost you can get out os a 57 trim ct26?

08-05-2011, 05:17 PM	#22
El Supracabras 3" Exhaust Join Date: Feb 2010 Location: Chicago Posts: 240	That is a question I would ask the supplier of the turbo. They would be able to tell you much more accurately what the max recommended pressure for their turbocharger would be.

08-09-2011, 03:41 AM	#25
dylansword 3" Exhaust Join Date: Jan 2010 Location: boise id Posts: 50	Thanks very much!

08-09-2011, 05:01 AM	#28
dylansword 3" Exhaust Join Date: Jan 2010 Location: boise id Posts: 50	I don't want to sound stupid, but what's the differenct between internal and external wastegate? I see a wastegate on both of them. Is the boost still adjustable? Thanks very. Much

08-09-2011, 04:37 PM	#30
dylansword 3" Exhaust Join Date: Jan 2010 Location: boise id Posts: 50	Okay, so there still good, just not for getting big numbers, and super precise tuning? One of my buddies has a t3 that he'd sell me for cheap. Anyone ever used one? Any recomindations?