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Picking Out turbos

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Picking Out turbos
Old December 18th, 2018, 10:33 AM   #1
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Picking Out turbos

Founds these online for a good price. Will these work well on a twin setup for a Gen2 800whp?

Turbonetics 60 Series 6162 Turbocharger

Model - 60 Series 6162

HP Rating- 425-625HP

Comp Wheel - H61mm Cast

Comp In/Out - 4" In / 2.5" Out

Turbine Wheel - F1-62

Turbine Housing - T3 .85 A/R 4-Bolt Outlet
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Old December 18th, 2018, 10:35 AM   #2
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Are you putting these on a Honda?
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Old December 18th, 2018, 11:02 AM   #3
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RSI's Stage 1 kit comes with Precision 6266 turbos with a .82A/R. Those kits are capable of making 800rwhp+. Thought maybe these being a little smaller would still get me to my goal.
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Old December 18th, 2018, 11:04 AM   #4
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Stay with the 6266s
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Old December 18th, 2018, 12:07 PM   #5
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RSI 6266 and 6766 being v band are t3 spec turbine housings. Have any of you monitored backpressures with these turbos? Making power is one thing but from the info I gathered with excessive backpressure one can run into some issues. I am very curious to know as I am considering t3 1.05 ar's myself but was told by precision that even 1.05 ar is too small of a housing for a 8.0L in twin configuration.
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Old December 18th, 2018, 01:03 PM   #6
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RSI 6266 and 6766 being v band are t3 spec turbine housings. Have any of you monitored backpressures with these turbos? Making power is one thing but from the info I gathered with excessive backpressure one can run into some issues. I am very curious to know as I am considering t3 1.05 ar's myself but was told by precision that even 1.05 ar is too small of a housing for a 8.0L in twin configuration.
Look into AndyMac's DIY Turbo build. He used smaller T3 turbos initially and mentioned that the backpressure was pretty close to the high end of the limit. I dont remember the turbine housing size tbh, but i want to say they were rather small or middle of the road T3 hotsides. (.68/80-ish)

Honestly whats keeping you from using T4 Hot-sides? They fit in the foot wells just fine, its really the compressor covers you need to worry about being too big for fitment if thats your worry. Ive purchased a pair of 67MM Turbos with .81 A/R t4 hotsides with single entry and 3" vband exit and they seem to fit in the foot well area fairly nice from mockup perspective.
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Old December 18th, 2018, 03:46 PM   #7
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Look into AndyMac's DIY Turbo build. He used smaller T3 turbos initially and mentioned that the backpressure was pretty close to the high end of the limit. I dont remember the turbine housing size tbh, but i want to say they were rather small or middle of the road T3 hotsides. (.68/80-ish)

Honestly whats keeping you from using T4 Hot-sides? They fit in the foot wells just fine, its really the compressor covers you need to worry about being too big for fitment if thats your worry. Ive purchased a pair of 67MM Turbos with .81 A/R t4 hotsides with single entry and 3" vband exit and they seem to fit in the foot well area fairly nice from mockup perspective.
I want to utilize symmetrical units. Very limited options. There is gtx3582r which IMO is no go. Some are not even out yet but PT will have 6266, 6466, and 7672 next year.

Im debating t3 6466 1.05 a/r and t4 7672 (I believe 0.86 and 0.96 will be available.

6466 t3 1.05 a/r should be a blast but no idea how much that 1.05 vs 0.86 helps to reduce packpressure

7672 is a monster of a turbo and even if I manage to fit them in footwells they are most definately an overkill for a street car. Thats over 2k capable turbo in twin configuration...

Call me on wanting symmetrical setup but thats how I do things sometimes
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Old December 18th, 2018, 04:35 PM   #8
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Turbonetics not highly regarded on LS forums - lots of issues/premature failure, which all brands except BW and Garrett have suffered at some point - but seems Turbonetics is recent

I run BullsEye Power batmowheels and love them, very responsive, fat power curve, and so far reliable.
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Old December 19th, 2018, 10:09 AM   #9
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Quote:
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Turbonetics not highly regarded on LS forums - lots of issues/premature failure, which all brands except BW and Garrett have suffered at some point - but seems Turbonetics is recent

I run BullsEye Power batmowheels and love them, very responsive, fat power curve, and so far reliable.
Damn those are expensive! These Turbonetics are only 600 shipped each. Ran Turbonetics before with no issues. What do you think about the size of them?
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Old December 20th, 2018, 02:52 PM   #10
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They'll work, make mad power down low/mid-range, and get you to 800rwhp at higher boost than larger turbos will. Backpressure will be present but you can work around that. Single medium sized turbo guys have it worse.. in other words - it'll work great with decent plumbing and tune. Make sure outflow from turbo is free flowing, you need to reduce backpressure. Run twin 2.5" pipes to each turbo not 3" to keep velocity up, you could even run 2 x 2.25"

Put a lot of attention to heat control, keeping AIT down is one thing - keeping the engine temps down is another after a few hot back to back runs
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Old December 20th, 2018, 03:33 PM   #11
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Originally Posted by Torquemonster View Post
They'll work, make mad power down low/mid-range, and get you to 800rwhp at higher boost than larger turbos will. Backpressure will be present but you can work around that. Single medium sized turbo guys have it worse.. in other words - it'll work great with decent plumbing and tune. Make sure outflow from turbo is free flowing, you need to reduce backpressure. Run twin 2.5" pipes to each turbo not 3" to keep velocity up, you could even run 2 x 2.25"

Put a lot of attention to heat control, keeping AIT down is one thing - keeping the engine temps down is another after a few hot back to back runs
Thanks for the info! I appreciate it.
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