Achieve perfectly square piston ring end gaps with this premium 7075 billet aluminium piston ring squaring tool, precision machined for accurate ring gap measurement during engine builds and rebuilds. Properly squaring piston rings in the cylinder bore is one of the most critical steps in measuring ring end gap correctly — incorrect ring squaring leads to inaccurate gap measurements, which directly translates to incorrect ring sizing, premature ring failure, blow-by issues, and compromised engine performance. This adjustable squaring tool fits cylinder bores from 2" to 5" diameter, making it a universal solution for virtually any engine build from small displacement four-cylinders through big-block V8 applications. 7075 aircraft-grade aluminium construction delivers exceptional strength and dimensional stability, ensuring the tool maintains true ring squaring accuracy across countless engine builds without warping or wear.

Features:

• Premium 7075 aircraft-grade billet aluminium construction – delivers exceptional strength, dimensional stability, and resistance to warping or wear from sustained use
• Adjustable bore range – fits cylinder bores from 2" to 5" diameter for universal compatibility across virtually all engine displacements
• Precision machined construction – maintains true ring squaring accuracy across countless engine builds
• Universal application – compatible with virtually any engine build requiring piston ring gap measurement
• Lightweight design – easy to handle during engine assembly without fatigue
• Professional engine builder tool – essential for accurate ring gap measurement and proper engine assembly

Specifications:

• Condition: 100% Brand New
• Type: Engine Piston Ring Squaring Tool
• Material: 7075 Billet Aluminium (Aircraft-Grade)
• Construction: Precision Machined
• Bore Range: 2" to 5" (50.8mm to 127mm)
• Quantity: 1 tool per pack
• Application: Engine Build / Piston Ring Gap Measurement
• Purpose: Professional Engine Building Tool

Compatibility:

• Universal application – fits cylinder bores from 2" to 5" diameter
• Compatible with virtually all engine builds within the 2" to 5" bore range, including:
• Small displacement four-cylinder engines (Honda K-series, Mitsubishi 4G63, Subaru EJ, etc.)
• V6 engines (LS V6, JZ inline-6, RB inline-6, etc.)
• Small block V8 engines (LS, LT, SBC, SBF, Mopar small block, etc.)
• Big block V8 engines (BBC, BBF, big block Mopar, etc.)
• Verify your cylinder bore diameter falls within the 2" to 5" range before ordering

Contents:

• 1x 7075 Billet Aluminium Piston Ring Squaring Tool

Benefits:

• Ensures accurate piston ring gap measurement – proper ring squaring is critical for correct gap measurement, which directly affects engine performance and longevity
• Prevents premature ring failure – incorrect ring gaps from inaccurate measurement can lead to ring breakage, scoring of cylinder walls, and catastrophic engine damage
• Reduces blow-by and oil consumption – properly gapped rings seal the combustion chamber correctly, maintaining cylinder pressure and reducing oil consumption
• Universal compatibility eliminates the need for multiple bore-specific tools – this single tool covers virtually all common engine bore sizes
• 7075 aircraft-grade aluminium construction delivers significantly higher strength and dimensional stability compared to lower-grade aluminium or plastic alternatives
• Precision machined construction maintains accuracy across thousands of measurements – critical for professional engine builders or serious DIY rebuilders
• Significant cost savings compared to specialized bore-specific tools or expensive professional ring squaring equipment
• Essential addition to any serious engine builder's tool collection – proper ring gap measurement is fundamental to engine assembly quality

Usage Notes:

• Bore range verification: Confirm your cylinder bore diameter falls within the 2" to 5" range before ordering – tools sized outside this range require different equipment
• Ensure the cylinder bore is clean and free of debris before inserting the squaring tool – any contamination affects measurement accuracy
• Position the piston ring fully inside the cylinder bore before using the squaring tool
• Use the tool to push the ring to a consistent depth in the bore – typically about 1" below the deck surface (or as specified by your engine builder or piston ring manufacturer)
• Once the ring is square in the bore, measure the ring end gap with a feeler gauge to verify proper specification
• Compare measured gap to manufacturer specifications for your specific piston ring set – different ring types (top compression, second compression, oil control) may have different gap specifications
• If gap is too tight, file the ring ends carefully with a ring file to achieve proper specification – never gap rings without proper measurement
• Clean the tool after each use to maintain accuracy and prevent residue buildup that affects future measurements
• Store the tool in a clean, dry location to prevent oxidation or damage from environmental exposure
• Refer to your specific engine builder, ring manufacturer, or service manual for exact ring gap specifications for your build
• Professional consultation recommended for high-performance, boosted, or race engine builds where ring gap specifications are critical to longevity and performance
• If unsure about proper ring gap specifications for your specific engine build, contact our team or your engine builder for guidance before performing ring gap modifications

Warranty:

• 12-month standard warranty from date of purchase
• Contact our support team for assistance with any issues