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Manley 11231-8 Severe Duty Stainless Steel Intake Valve - 2.020 NK-844

Part of: Manley Severe Duty Stainless Steel Intake Valve

Other options in this family: Manley 11826-8 Manley 11543-8 Manley 11850-8 Manley 11846-8 Manley 11772-1

Manufacturer

Picture for manufacturer Manley

Part Number

11231-8
14 reviews
Sale Price

$301.07

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Manley 11231-8 is a severe duty performance intake valve engineered for high-performance race engines. Manufactured from premium NK-844 stainless steel, this valve features a chrome stem and hardened valve tip for maximum durability under extreme conditions. The swirl-polished finish and fully machined construction ensure superior quality and consistent performance.

Key Features:

  • NK-844 stainless steel construction for exceptional strength and heat resistance
  • Chrome stem with hardened tip for extended service life
  • Straight stem design for increased durability and reduced friction
  • Swirl polished surface finish for optimal flow characteristics
  • Fully machined to precise tolerances

Specifications:

  • Valve Type: Intake
  • Head Diameter: 2.020 inches
  • Stem Diameter: 0.3415 inches (11/32)
  • Overall Length: 5.015 inches
  • Installed Height: 0.100 inches longer than stock
  • Tip Length: 0.250 inches
  • Underhead Angle/Radius: 10 degrees x 3/8 inches
  • Margin: 0.070 inches
  • Seat Width: 0.080 inches
  • Top of Head: 7 degree dish
  • Weight: 113 grams

Ideal for serious racers and engine builders demanding superior valve performance and reliability in high-RPM, high-stress applications.

Products specifications

Approximate Weight (g)

94

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

5.040 in.

Overall Valve Length (mm)

128.016mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

Yes

Valve Head Diameter (in)

1.600 in.

Valve Head Diameter (mm)

40.640mm

Valve Head Style

15 degree dish

Valve Material

Stainless steel

Valve Stem Diameter (in)

0.313 in.

Valve Stem Diameter (mm)

7.950mm

Valve Tip Length (in)

0.290 in.

Valve Tip Length (mm)

7.366mm

Very nice rims- they look real nice on my son's fixer up car- they really off set the Maroon paint.

Very quick and easy

The website was very to make my way thru it

GOOD EXPERIENCE

Order was received promptly with no problems.

Thank you

It’s okay seems cool so far

I would use them again

Great Prices!

it was one of the most easiest sites to use and the order shipped really quick. will buy from again.

Web site has a lot of items without much description.

I ordered the part from Autoplicity and it arrived in time and is a great product<br>

Autoplicity IT help desk was great in getting the order done. I had problems with my computer and the IT person worked things out so the order could be processed.

Best Price i could find for some nice foglamps. easily navigable website.

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