What is the compression ratio with these pistons?

These pistons feature a dish design that results in an 8.5:1 compression ratio when installed in the specified engine configurations. This is a common ratio for performance-oriented builds.

What is included in this piston set?

This set includes the forged pistons, which are 87mm and 0.5mm oversized, along with tool steel wrist pins. It is important to purchase appropriate piston rings separately, as they are not included with this set.

Are these pistons suitable for all engine builds?

These pistons are made from strong 2618 alloy and are designed for performance applications, often used with a 4G63 head on a 4G64 block. However, they are not CARB approved and cannot be shipped to California.

Specifications

Brand: Manley Performance
Part #: 613005C-4
UPC: 807298044859

Manley 95-99 Mitsubishi (4G64 w/ 4G63 Head) 87mm +.5mm Oversized Bore 8.5:1 Dish Piston Set with R

Name: Manley 95-99 Mitsubishi (4G64 w/ 4G63 Head) 87mm +.5mm Oversized Bore 8.5:1 Dish Piston Set with R
Brand: Manley Performance
SKU: manley-performance-manley-95-99-mitsubishi-4g64-w-4g63-head-87mm-5mm-oversized-b-t14-5683
Price: 758.81 USD
Availability: BackOrder

$758.81

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Manley 95-99 Mitsubishi Galant (4G64 w/ 4G63 Head) 87mm +.5mm Oversized Bore 8.5:1 Dish Piston Set with RPiston.

Key Features

Fits 1995-1999 Mitsubishi Galant, 1996-1999 Eclipse, 1995 Expo, 1995-1996 Mighty Max, and 1997-1999 Montero Sport.
Forged from domestic 2618 alloy for superior strength and performance.
Features a dish design resulting in an 8.5:1 compression ratio.
Pistons are 87mm in bore diameter, a 0.5mm oversize.
Includes tool steel wrist pins for added durability.
Moly skirt coatings are applied to help reduce friction.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're rebuilding the engine in your 1995-1999 Mitsubishi Galant, especially if you're using a 4G63 head on a 4G64 block, this set of forged pistons from Manley Performance is a solid choice. These pistons are designed to be 87mm in bore diameter, which is a 0.5mm oversize, and feature a dish that results in an 8.5:1 compression ratio. This setup is commonly used when building a more robust engine for performance applications.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their strength and ability to handle higher performance demands compared to cast aluminum. They also feature proven cam and barrel skirt profiles, designed to reduce friction and wear on your cylinder walls while still allowing the engine to make good power. The ring lands and grooves are machined to strict standards to ensure a good seal with your piston rings, which is crucial for both power and efficiency. Each set includes tool steel wrist pins for added durability, and the pistons come with a moly skirt coating to further reduce friction during break-in and operation.

This piston set is a popular option among professional engine builders and tuners who rely on Manley for their performance engine builds. It's important to note that these pistons are not CARB approved and cannot be shipped to California. You'll want to refer to the manufacturer's installation instructions for specific details on fitting these pistons into your engine, including any necessary machining or assembly procedures.