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Topic: Precision SC50 Turbo (Read 1716 times) previous topic - next topic

Precision SC50 Turbo

I'm looking at one of these for my '87.  Is this a good turbo for my application?  It has a 50mm, 50 trim compressor wheel with a 2.123" inducer and a 3.000" exducer. It has a T04E style compressor cover with a billet aluminum backplate. The turbine wheel is a T31 76 trim with a 2.559" inducer and a 2.228" exducer.  The center section uses the upgraded 360-degree thrust bearing, which lasts much longer than the standard 270-degree bearing found in most low priced and/or off s turbochargers.  The exhaust housing is a Precision Turbo casting with a T3 inlet , 5-bolt discharge for the downpipe and a 0.48 A/R for quick spooling.

Let me know what you guys think.  Thanks!


Precision SC50 Turbo

Reply #2
The .48 SC50 is good for stock-ish motors. Layla has had the ball-bearing SC50R for 18 months with the .63 SIII housing/wheel and even with a heavily modified engine it spools a little on the slow side.

Precision SC50 Turbo

Reply #3
IMO you should probably worry about maxing out a stock T3 before you worry about stepping up to a bigger turbo.

I recently bought a 57 trim, and even with everything I've got done, it's too much for what I have right now. It his full boost around 3500 RPM, but doesn't really start pulling until 4000+ RPM.

Considering that you're working off a stock head, stick with a T3 for now.

Garrett H.
'94 F250 XLT- 4x4, 5 speed, 7.3 IDI Turbo Diesel, 4" intake, 4" exhaust, 5" turnout stacks, manual hubs, etc.
'87 Thunderbird Turbo Coupe
Engine, wheels, tires, etc!
Exhaust sound clip
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Precision SC50 Turbo

Reply #4
I run the same turbo, but in a .63 A/R.

My car is very mild, run a Bobs log header, the SC50, full 3" exhaust, cold air intake, ranger roller, race engineering cam pulley, and 20psi of boost.

I love it.
It's Gumby's fault.