The HPT F2 6870 and F3 6870 turbos are often compared, and with good reason. Both models are designed for high-performance builds, but they offer subtle differences that can influence which one is the best fit for your setup. Below is a breakdown to help you choose the right turbo.
Comparison of the HPT F2 6870 and the HPT F3 6870 Billet Dual Ball Bearing Turbochargers
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Model |
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Horsepower Rating |
1150 HP |
1150 HP |
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Compressor Housing |
4" Ported Inlet, 2.5" Outlet |
4" Ported Inlet, 3" Outlet |
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Turbo Weight with T4 Housing |
19 lbs |
20.5 lbs |
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Turbo Weight with V-Band |
15 lbs |
21 lbs |
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Turbine Housing Options |
T3 Inlet, V-Band Discharge 1.10 A/R |
T4 Inlet, V-Band Discharge 0.82 & 0.96 A/R |
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T4 Divided 0.84 A/R |
T4 Divided 1.00 A/R |
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V-Band Inlet 1.07 A/R (2.25" Inlet) |
V-Band Inlet 0.96 A/R (3" Inlet) |
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Outlet Connection |
3.625” OD, Flanges for 3” & 3.5” |
4.28” OD, Flanges for 3.5” & 4” |
Shared Core Features
Both models feature dual ball bearing center sections, 68mm compressor wheels, 70mm turbine wheels, and are capable of 1150 HP. These similarities ensure durability and performance across various builds.
Key Differences
Compressor Housing & Outlet Size
F2 6870: 2.5" outlet—better for setups with smaller charge piping.
F3 6870: 3" outlet—ideal for larger piping and better high-RPM airflow.
Pro tip: If your build uses 2.5” piping, the F2 is a simpler fit. For 3” piping or future-proofing, the F3 is a better option.
Weight Comparison
F2 6870: Lighter (15 lbs with V-band).
F3 6870: Heavier (21 lbs with V-band), adding robustness for high-boost applications.
Tip: Choose the F2 for lightweight builds. The F3 suits higher-boost setups where strength is key.
Turbine Housing Options
F2 6870: Offers both T3 and T4 options, with quicker spooling for smaller engines.
F3 6870: Only T4 and V-band inlets, optimized for larger engines and higher power builds.
Pro Tip: Use the F2 if you need a T3 housing. The F3 excels with T4 setups, delivering more flow for high-performance applications.
Outlet Flanges
F2 6870: 3.625” OD, supports 3” and 3.5” exhaust setups.
F3 6870: 4.28” OD, designed for 3.5” and 4” flanges.
Which Turbo is Right for You?
Choose the F2 6870 if:
- You need lightweight performance with quick spool.
- Your build uses T3 housings or 2.5” charge piping.
Choose the F3 6870 if:
- You need quick spool and more airflow for maximum power.
- Your setup already uses T4 housings or 3” piping.
Both the F2 6870 and F3 6870 deliver HPT’s fast spooling power. Their shared features—dual ball bearings, 68mm compressor wheels, 70mm turbine wheels, and 1150 HP capability—make them suitable for many builds. If you still need some advice, contact our team, and we’ll help you find the perfect HPT turbocharger for your build!
Hello team, Harry piqued my attention with his video. Apparently, no one in a Honda community has try your turbos and all suggesting me to use the Garrett G40-1150/ Pulsar 7170 . So I’m not so sure how big of a risk it is to try something new here in Australia.
Honda S2000. Build engine F24 . Max RPM is 8500 . i Have GATO intake manifold with 80mm TB , 3.5’’ exhaust and i have create a space for top mount exaust manifold. Ideal is to use VBAND because of the space. My power goal is to have at least 850 whp on pump E85. Some roll street racing and mounts is my favor. Please advise .
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