Is the 1.5L SOHC D15B2 engine an interference type engine? The timing belt broke (while the car was stopped) in my 1989 Honda civic DX. and the mechanic claimed that there was no valve damage b/c this is a non-interference engine. Is this true?
by 
idodagan
ANSWERS: 6
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i dont see the valves being damaged in that engine. i have a fully race built b18b1 in my integra. i know quite a bit about honda motors but i have never heard of a b15 going to bent valves after a broken timing belt..but then again i havent worked on many d15's either. as long as you shut down the motor almost instantly when you broke it you should be ok. but if you kept it on for abit i think there could definitely b some damage done
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it is an interference engine, not non. maybe luck had something to do with it not getting crunched. i have had three of them personally and lost two belt and smashed the vavles into lil bent bits destroying the head entirely. timing is crucial on those engines, one or two teeth off and slipping can make it destroy itself. very lucky if there was no damage done.
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If the engine was running at ilde and stopped right away when the belt broke it is possible that there is no damage to the valves, just a little dent to the cylinder heads.But to know for sure you have to check them if they were bent or crack specially if you notice a lack of power and erratic aceleration. and you mechanic is wrong this is not a non-interference engine.
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it is a interference engine but sence you were not driving it you have a good chance of not bending the valves
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if the vehicle was at rest it is quite possible that nothing was damaged. if your mechanic is not trying to sell you a new cylinder head, he's probably telling you the truth.
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You were lucky, most honda engines are interference engines. My old Hyundai Sonata had a Mitsubishi Engine which was interference engine, i'm glad my timing belt broke while the car was stopped.
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