Counter Bore Repair in Lone Rock, WI

Counter Bore Repair in Lone Rock, WI

When the counter bore in your engine block becomes worn, cracked, or uneven, it prevents liners from seating correctly. This often leads to blown head gaskets, combustion leaks, and internal coolant or oil contamination. If you're seeing white smoke, low compression, or coolant mixing with oil, counter bore issues may be to blame.

Key signs that your counter bore may need repair include:

• Recurring head gasket failures
• Drop in liner height or visible misalignment
• Excessive engine vibration or power loss
• Coolant leaking into the combustion chamber

We perform thorough counter bore inspections and repairs, including machining damaged bores and installing hardened steel inserts. This process ensures accurate liner seating and proper protrusion—essential for creating a reliable head seal.

Our repair steps include:

• Measuring liner height across all cylinders
• Machining damaged counter bores to restore accuracy
• Press-fitting hardened counter bore inserts
• Final machining and re-checking of liner protrusion

Every detail matters, and our work reflects that. We take pride in delivering precision repairs that get your engine back in reliable working order.

What Makes Us Different

At GJ’s Service, our reputation is built on unmatched quality and honest customer care. We don’t just fix problems—we restore confidence in your vehicle's performance.

Here’s what you can count on:

• Exacting Workmanship: Our technicians use specialized tooling and proven methods to ensure accurate machining and insert fitment.
• Customer Dedication: We take the time to explain the problem, the repair process, and your best options without any pressure.
• Integrity in Every Step: We treat your engine like it's our own and hold ourselves to a standard of workmanship that ensures long-term results.
• Clear Communication: No guesswork. You’ll always know what we’re doing and why it matters to your vehicle's reliability.

When you trust us with something as critical as counter bore repair, we return that trust with honest, high-caliber work.

Contact Us About Counter Bore Repair in Lone Rock, WI Now: Call 608-583-2200!

If your engine is showing signs of a failing seal or dropped liner, now is the time to act. Call GJ’s Service at 608-583-2200 to schedule a counter bore inspection or repair. We’re here to help you protect your investment and avoid further engine damage.

FAQs

What Areas Do You Serve For Counter Bore Repair?

We are based at 420 East Forest Street in Lone Rock, WI. We proudly serve customers throughout the surrounding region, including Spring Green, WI; Gotham, WI; Sauk County, WI; Iowa County, WI; and Richland County, WI. Our service radius covers up to 50 miles from our shop.

What Causes Counter Bore Damage?

Counter bore damage usually stems from excessive heat, repeated head gasket failures, or improper liner installation. These factors can wear down or crack the liner shelf over time. If left unaddressed, it leads to combustion leaks, coolant contamination, and more frequent engine breakdowns.

How Is Counter Bore Repair Performed?

The damaged counter bore is machined to a consistent depth and diameter using specialized equipment. A hardened steel insert is then press-fitted into the newly cut area to restore proper dimensions. After that, the liner is installed, measured for height, and adjusted to ensure the engine block can form a tight and lasting seal.

How Can I Get Counter Bore Repair?

To schedule a counter bore repair, contact GJ’s Service at 608-583-2200. Our team will perform a full diagnostic, explain your options, and deliver the repairs you need to get back on the road. Whether it’s early signs or advanced wear, acting now can save you from a major failure later.