Injecteurs de carburant pour moteurs HD Miwaukee-Eight

Augmentez la puissance et l'efficacité de votre moteur Harley-Davidson Milwaukee-Eight avec nos injecteurs de carburant de la série 22 haut de gamme. Spécialement conçus pour les modèles M8 2017-201826, ces injecteurs offrent une amélioration significative des performances, s'adaptant à des constructions allant de configurations de rue douces à des configurations de course agressives.

Principales caractéristiques et avantages de nos injecteurs de carburant pour les moteurs HD Miwaukee-Eight :

Haute performance - Fabriqué aux États-Unis à l'aide d'une technologie d'injecteur avancée pour une efficacité et une puissance maximales.

Ensembles appariés - Vendus en paires assorties avec précision pour assurer un équilibre optimal et des performances constantes.

Rapports d'essai détaillés - Chaque ensemble d'injecteurs comprend un rapport de débit individuel, testé à 58 psi pour garantir la précision.

Large plage de débit - Choisissez parmi dix débits disponibles, de 5,38 gm/sec à 12,7 gm/s, en s'adaptant à différents niveaux de puissance.

Référence du débit d'usine - Stock 2017 Milwaukee-Eight écoulement des injecteurs à 4,38 gm/sec. Nous recommandons nos injecteurs de 6,2 g/sec pour les accumulations jusqu'à 145 chevaux de roue arrière (RWHP) à 6 500 tr/min. À partir de 2024, les débits de l'injecteur de carburant ont augmenté avec deux moteurs CVO 121 et le HO 117 sont tous deux passés à 5,3 gm/sec. Remarque : Les normes 107, 114 et 117 conservent toutes le débit de 4,38 gm/sec.

Recommandations de dimensionnement de l'injecteur :

Débit (gm/sec) Puissance maximale recommandée (RWHP) Application typique

ESSENCE NA - Diagramme type d'origine - Stock + Came + Admission 

ESSENCE NA ou Turbo - Performance Builds

ESSENCE NA - Performance agressive/Racing

ESSENCE TURBO - Performances agressives/Racing

ESSENCE TURBO - Performances agressives/Racing

E85 NA NA - E85 - Performance agressive/Racing

E85 TURBO TURBO - E85 - Performances/Courses agressives

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Description

Fuel Injectors for HD Miwaukee-Eight Engines (2017-2026)

Boost your Harley-Davidson Milwaukee-Eight engine’s power and efficiency with our premium Series 22 Fuel Injectors. Specifically engineered for 2017–2026 M8 models, these injectors offer a significant performance upgrade, accommodating builds from mild street setups to aggressive race configurations.

Key Features & Benefits of our Fuel Injectors for HD Miwaukee-Eight Engines:

High Performance – Crafted in the USA using advanced injector technology for maximum efficiency and horsepower.

Matched Sets – Sold in precisely matched pairs to ensure optimal balance and consistent performance.

Detailed Test Reports – Every injector set includes an individual flow report, tested at 58 psi to guarantee precision.

Wide Flow Range – Choose from ten available flow rates, from 5.38 gm/sec to 12.7 gm/sec, accommodating various horsepower levels.

Factory Flow Reference – Stock 2017 Milwaukee-Eight injectors flow at 4.38 gm/sec. We recommend our 6.2 gm/sec injectors for builds up to 145 rear-wheel horsepower (RWHP) at 6,500 RPM.  Starting in 2024 the fuel injector flow rates increased with two engines CVO 121 and the HO 117 both changed to 5.3 gm/sec.  Note: The 107, 114 and 117 standard all retain the 4.38 gm/sec flow rate.

Injector Sizing Recommendations:

Flow Rate (gm/sec) Recommended Max Power (RWHP) Typical Application

5.38 Up to 120 RWHP – PETROL NA – Mild Builds – Stock + Cam + Intake + Pipe

6.2 Up to 145 RWHP – PETROL NA or Turbo – Performance Builds

7.08+ 145+ RWHP – PETROL NA – Aggressive Performance/Racing

8.49+ 145+ RWHP – PETROL TURBO – Aggressive Performance/Racing

10.6+ 195+ RWHP – PETROL TURBO – Aggressive Performance/Racing

9.9+ 145+ RWHP – E85 NA NA – E85 – Aggressive Performance/Racing

12.7+ 195+ RWHP – E85 TURBO TURBO – E85 – Aggressive Performance/Racing

Why Choose Series 22?

Series 22 injectors are precision-engineered to deliver accurate fuel metering, providing smoother throttle response, improved fuel economy, and consistent, reliable power gains. Whether upgrading from stock or building a competitive race engine, Series 22 is your trusted choice.

Why do we use gm/sec as a flow rate?  This is because the Motor Company chose the unit gm/sec to rate their injectors.

How to covert lb/hr to gm/sec.  First you have to determine the pressure that was utilized to determine the flow rate of the injector (very important).

Note: The OE M8 fuel system utilizes 58psi.  The DTT Series 22 fuel injector flow rates are measured at 58psi.  Many fuel injector flow rates are performed at 43.5psi.

If the pressures are the same for the two injectors (both measured at 58psi) , the following formula is used to convert from lb/hr to gm/sec.    gm/sec = (lb/hr) * 0.126

If you use 0.126 as a constant the result is approximate, additional digits provide more accuracy 0.12599788 is the actual value.

How do we come up with the constant 0.126?  By using the formula (453.59237 g_per_lb) / (3600 s_per_hr) =  0.12599788.  453.59237  is the grams in one pound an 3600 is the seconds in one hour.

Remember that the pressure is what typically determines the flow rates (43.5psi vs 58psi) first calculate the new flow rate and then convert to gm/sec.

To convert the new injector flow rate for the new pressure use the formula:  New Flow (lb/hr) = Rated Flow (lb/hr) * sqrt(Actual Pressure / Rated Pressure).

For example:

Rated Flow (lb/hr) = 42

Rated Pressure = 43.5

Actual Pressure = 58

New Flow (lb/hr) = 42 * sqrt(58 / 43.5)

= 42 * sqrt(1.3333333)

= 42 * 1.15470054

= 48.497421 lb/hr @ 58psi

New Flow (gm/sec) = 48.497421 * 0.12599788

= 6.101 gm/sec @ 58psi

 

• To convert from cc/min to gm/sec, the conversion is similar, use these formulas.

New Flow (cc/min) = Rated Flow (cc/min) * sqrt(Actual Pressure / Rated Pressure) and g/s = (cc_per_min × fuel_density_g_per_cc) / 60

For example

Rated Flow (cc/min) = 500

Rated Pressure = 43.5

Actual Pressure = 58

New Flow (cc/min) = 500 × sqrt(58 / 43.5)

= 500 × 1.15470054

= 577.35 cc/min @ 58psi

g/s = (cc_per_min × fuel_density_g_per_cc) / 60

g/s = (577.35 × 0.745) / 60

g/s = 429.72 / 60

g/s = 7.162 g/s

note: cc_per_min = inj flow rate cubic centimeters per min (cc/min), fuel_density_g_per_cc = fuel density in grams per cubic centimeter (g/cc) for gasoline this is typically 0.745 g/cc @ 15 C and 60 = number of seconds in a minute used to convert from gm/min to gm/sec.

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