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Old 03-08-2008, 01:48 PM   #1 (permalink)
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Question Honda Engine D16Y3 Interfernce/Non-Interference engine

My 1997 Rover has a Honda D16Y3 engine(Honda owned Rover thru the 1990's) and the timing belt just snapped. My wife was driving it at low speed at the time...I thought it was an electrical problem at the time and was checking the Distributor when I realized the Rotor was not turning as I hand cranked the crankshaft...I took off the rocker cover and discovered the timing belt had broken...it had seemed relatively easy to hand crank the engine and there seemed no obvious damage to the valve/rocker assembly...Do I need to take the head off to do a visual or can I just go ahead and change the belt...so ,is this engine an Interference or Non-interference engine...thanks for any help
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Old 03-08-2008, 06:36 PM   #2 (permalink)
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this would be an interference engine...
but really all you gotta do is take the head off & see if you bent the valves..(which is most likley...)

if so...buy another head...possible a cheap junkyard head...have it checked if you could (to make sure the head itself is not bent)
buy a new head gasket
put the head on
put the engine in time & put on a new timing belt & your good to go
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Old 03-09-2008, 01:37 PM   #3 (permalink)
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I've always said that it will always bend a valve, but I've been proven wrong twice in the last month. Go figure.
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Old 03-09-2008, 11:44 PM   #4 (permalink)
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my buddy bought an a6 that had broken a timing belt at idle. Put a new belt, tensioner and water pump and runs to this day like a top.
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Old 03-31-2008, 06:35 PM   #5 (permalink)
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yea mine snapped this weekend and i had no bent valves either, its kinda hit or miss i guess
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Old 03-31-2008, 06:40 PM   #6 (permalink)
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Put pressure in the cylinder rotate it to TDC and see if it holds it, or not.
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Old 05-05-2011, 07:18 PM   #7 (permalink)
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Found this thread through a search so I'm going to revive it for info purposes. Just had my D engine rebuilt (had 200k) and the shop discovered a bent valve. I'd been driving it this way forever, never broke a belt that I know of but I bought the car at 135k. Anyway it did make an annoying tapping. Couldn't tell by looking at the valve that it was bent except that it was worn funny where it seats. I tested the compression before and it was ok for so many miles. I have a slight headgasket issue right before the rebuild (the reason for it) so possibly the coolant in the cylinder bent or warped the valve, however the car still ran ok except for slight coolant loss leading to overheating (never went to the red, not even white smoke out the pipe, just bubbles in the radiator).
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Old 05-05-2011, 11:27 PM   #8 (permalink)
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Quote:
Originally Posted by strategy400 View Post
Found this thread through a search so I'm going to revive it for info purposes. Just had my D engine rebuilt (had 200k) and the shop discovered a bent valve. I'd been driving it this way forever, never broke a belt that I know of but I bought the car at 135k. Anyway it did make an annoying tapping. Couldn't tell by looking at the valve that it was bent except that it was worn funny where it seats. I tested the compression before and it was ok for so many miles. I have a slight headgasket issue right before the rebuild (the reason for it) so possibly the coolant in the cylinder bent or warped the valve, however the car still ran ok except for slight coolant loss leading to overheating (never went to the red, not even white smoke out the pipe, just bubbles in the radiator).
Might have a cracked head near a valve seat which led to the weird wear issue due to the valve seat shifting around.

BTW, Thank you for using the search function, if it brings up an old thread, then so be it!!!!
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Old 05-06-2011, 07:24 AM   #9 (permalink)
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I'm assuming the mach. shop checked for cracks. All they reported was a bent valve. It's a D15B7 - 95 Del Sol. They also did nothing to my cam/rocker assy. Is this normal? They said it was - "Oh you never mess with that stuff". I'm hearing a very faint tapping in the engine (800 miles so far). Could that be worn rockers?
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