Here's a full teardown inside the Honda D17 engine to see what's inside and how it works!

The Honda D17 engine uses a single overhead camshaft with VTEC variable valve timing. The cam is driven by a timing belt from the crankshaft, as is with the oil pump. The bottom end of the engine uses a girdle to support lower main bearings that has oil passages within to lubricate its bearings. The cylinder head features a roller rocker arm setup with the extra rockers for VTEC engagement. An EGR valve and cooler assembly attaches to the back of the head.

The D17 engine suffered from headgasket failures, and typically wasn't as strong or receptive to tuning as the B- series that preceded it. Other common issues include oil leaks and EGR passages building up carbon. This was definitely an economy minded engine, as was the cost-cutting measures deployed in the 7th Generation Honda Civic upon which its found in.

The engine in this video was a D17A2 from a 2002 Acura EL with 192,000 km.

Skip to section in the video:
0:00 Introduction
1:04 Teardown
11:45 Analysis
17:48 Conclusion

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