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Manley 11131-8 Valvetrain

Manufacturer

Manley

Picture for manufacturer Manley 592107C-8 in our Pistons Deptartment

Part Number

11131-8
9 reviews
04/19/2034 5:56 PM
Sale Price

$220.19

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Product Details

Manley 11131-8 Valvetrain

* Valve Type: Intake * Head Diameter: 2.000 in. * Stem Diameter: .3415 in. (11/32) * Installed Height: Stock * Overall Length: 4.900 in. * Tip Length: .250 in. * Underhead Angle/Radius: 12 degrees x 3/8 in. (Pro Flo) * Margin: .050 in. * Seat Width: .080 in. * Top of Head: 7 degree dish * Weight: 109 grams

The Manley race series performance valve is a great choice for your bracket oval track or high performance street engine. The valve is made from NK-842 stainless steel with a chrome stem and hardened valve tip. This race series valve is made from excellent material swirl polished and fully machined with an undercut stem for more flow.

* Measure existing valve head and stem diameter prior to ordering new valves

Race Series Valves
Exhaust
Set of 8

Manley Performance Sport Compact stainless steel valves utilize our exceptional Race Series alloy and are manufactured to the highest quality standards.

Manley valves are designed to outflow and outperform all others even in the most severe environments. Manley stainless valves feature gorgeous yet durable chrome stems, swirl polished under heads, fully hardened tips, completely machined combustion faces, closely controlled margin heights, and exact stem to seat concentricity to render a finished product that is unsurpassed.

Manley intake valves typically are built with our original Pro-Flo design which reduces the stem diameter in the fillet area for increased airflow but also less valve weight.

In certain specific applications, Manley offers our Extreme Duty exhaust material. Our Extremealloy alloy offers more hot hardness and high temperature strength than our competitors offerings. This alloy is ideal for extremely high boosted applications where the exhaust gas temperatures reach what seem like unthinkable levels.

Manley stainless valves are suitable for all applications ranging from the mild street performer to the jaw dropping 1000+ horsepower race cars competing at the drag strip or drifting events.

Products specifications

Head Diameter

31mm

Margin

.065"

Notes

For K20A2 engines.

O/A Length

109.04mm

Overall Valve Length (in)

4.291 in.

Overall Valve Length (mm)

109.0mm

Quantity

Sold as a set of 8.

Seat Width

.080"

Stem Diameter

5.5mm/.2165”

Swirl Polished

Yes

Swirl-Polished

Yes

Tip Length

2.08mm

Top of Head

20° Dish

Undercut Stem

No

Underhead Angle/Radius

25° x 11/32"

Valve Head Diameter (in)

1.220 in.

Valve Head Diameter (mm)

31.0mm

Valve Head Style

20 degree dish

Valve Material

XH-426 stainless steel

Valve Seat Width (in)

0.080 in.

Valve Stem Diameter (in)

0.217 in.

Valve Stem Diameter (mm)

5.5mm

Valve Tip Length (in)

0.082 in.

Valve Tip Length (mm)

2.08mm

I was very skeptical of ordering from Autoplicity, as I've never heard of them. They had everything I needed in stock and shipped very quickly, and for a much better price than my normal suppliers at Jegs and Summit Racing. I would recommend them to everyone...............Jeff

Lowest prices around, fast to ship. I will be back.

great so far

Very friendly customer service! They also shipped my radiator out very quickly. I will definetly be ordering from autoplicity again!

Amazing !! FAST SHIPPING and GREAT PRICES !! I couldn't ask for better !! I will definitely shop with Autoplicity again !!

I needed a few small XRP fittings for our NHRA Top Alcohol Dragster, I had called XRP and even a "pro racer discount" the price was ridiculous; couple this with their ridiculous shipping/handling charge I had to go elsewhere. I typed in the XRP part number into Google and found Autoplicity, twice as many pcs. as I was planning on ordering and with shipping it was cheaper than one fitting from XRP direct. I will be checking Autoplicity anytime I'm ordering something from this day on, everything about the transaction was smooth and simple. I just got my tracking number today and the stuff is on its' way. Thanks for making this transaction so easy and not robbing your customers on something as frivolous as "handling".<br><br>Respectfully,<br>Brandon Booher<br>NHRA TAD #34

Ordered Thursday, shipped Monday... guess all in all we can't be disappointed. At least they had them in stock.

I build engines for Classic muscle cars and hot rods. Presently assembling chev. SB 383 cu/in. Went shopping for a Name Brand rotating assembly that was complete and ready to install.Shopped several other sites before finding "Autoplicity" Prices were GREAT (best I could find Anywhere), Shipping Very prompt, Shpg. charges Very reeasonable,I will Defenitely use them again!!!

Good prices. Good communication.

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