Piston and Rings wear inspection method | Honda CD70 Engine Repair Part 3
Автор: MotoPartsPakistan
Загружено: 2025-08-24
Просмотров: 372
How to Measure Piston Wear or Service Limit of Honda CD70
Maintaining the performance of your 70cc motorcycle requires precise inspection of engine components—especially the piston. This guide explains how to measure piston wear and determine whether it's within the manufacturer’s service limits.
You'll learn:
📏 How to measure piston skirt diameter using a micrometer (typically 90° from the wrist pin)
🔍 How to inspect the cylinder bore with a bore gauge or telescoping gauge
⚙️ How to calculate piston-to-wall clearance and compare it with OEM specs
🧪 How to check ring groove wear and ring end gap for sealing efficiency
🔧 How to identify visual signs of wear like scoring, taper, or ovality
This tutorial is especially useful for mechanics, students, and DIY enthusiasts working on small-displacement engines. Whether you're rebuilding the top end or diagnosing low compression, these measurements help you decide whether to reuse or replace the piston.
Note: Use the piston if its overall condition is good. If it has scratches then do not reuse it.
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https://quickreviewsandgui.wixsite.co...
Piston measurement 1:24
piston ring side clearance 2:53
measuring piston ring end gap 3:40
#HondaCD70 #EngineRebuild
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