If you are changing timing belts or water pump or have any reason to remove timing cover, check to see if front balance shaft oil seal has a metal support bracket that holds seal in place. If you do not see one, do yourself a big favor and install one. These seals fall out (that's right, they fall out of housing). This will cause a massive pressure fed oil leak, perhaps one quart per minute. This could destroy engine crank bearings.

I just did timing belts and water pump 4000 miles ago, but did not know about this mod. Of course, the seal fell out, but I was lucky enough to drive just a short distance before I noticed a huge puddle under car and shut engine off. I drove about 1/2 mile and lost about two quarts of oil.

The Honda part # is 06923-P0A-306 "OIL KIT" $4.39 US. It bolts on to front housing; no drillling required.

Happy motoring!

PS. My car is a 1996 2.2 non vtec. Not sure what series or years of engines this mod applies to.