Timing belt broke

[JakeBlume]

While I was on the highway today my car stopped running. After some investigation I found the timing belt had snapped.

Now, I know how to replace it and all that. My question is what are the chances I have bent some valves?

I have read a lot about this and have not found a consensus. Some people have bent valves and others haven't. There is no clanking or anything coming from the motor and I didnt hear anything when it snapped.

[nate'sCB7]

Might as well rebuild the head just to be safe cuz 9 times outta 10, you'll bend atleast one valve when you have timing belt snap on ya

[H22Artman]

at freeway speeds you are MORE likely to bend valves than at lower speeds.

ive known many to get lucky and have no damage after losing a timing belt at high speed.
i also know folks who have totally destroyed their valves at city speeds.

take your head off and have it pressure tested. that should tell you if the valves are seating properly.

[James Matteu]

One quick check is to replace the timing belt, remove the spark plugs and turn the motor by hand. You should be able to hear a light tap if a valve is damaged.

[UNeeKToNy]

i say 9/10 u have bent valves. i brought a 93ex from a cb7 member here, and he told me that his timing belt broke. Well i brought the car, and took the head off and guess what? I only suffered 2 bent exhaust valves and im currently rebuilding the head. So chances are.... u have bent valves. Good luck and have fun. U will learn a good amount about the engine when tearing it all apart. need advice give me a page.

[mercyboy]

First just check to make sure the valves have no damage before you go back on the road with a new timing belt...Cause it will affect it in the future

[evil_demon_01]

My question is what are the chances I have bent some valves?

The chances are 50/50, As already said you need to put a new cambelt on and then test it.
Unless you feel like pulling the head off for fun, then finding they are OK.

[JakeBlume]

I appreciate all the help guys. I am looking into an F22b head swap since I am probably going to have to pull the head. I have been thinking about doing it anyway and this is almost a perfect excuse. So if anyone can help me find the parts lol....

[cb7dazz]

chances are very good that it will have bent valves

[HondaFan81]

at freeway speeds you are MORE likely to bend valves than at lower speeds.

ive known many to get lucky and have no damage after losing a timing belt at high speed.
i also know folks who have totally destroyed their valves at city speeds.

take your head off and have it pressure tested. that should tell you if the valves are seating properly.

Vehicle speed is not factor, but engine RPMs.

[I<3MyHonda]

you never know. Pull the head and check it out. When I was 17 with my first accord the timing belt broke when I was on a long hill. I thought the car just stalled so I tried to bump start it like 3 or 4 times. Well I figured out what happened and replaced the t belt and it fired right up and ran great. None bent.

.... well ran great till i blew the head gasket.

I'd just try and put a new belt on it first. Do the water pump while you're in there as good preventive maintenance. If it doesn't run like before then I'd pull the head. That may not be the best way to go about it but that's what I'd do.

:edit: Just saw the post about the head swap. My bad. Go for it!

[TypeG]

you never know. Pull the head and check it out. When I was 17 with my first accord the timing belt broke when I was on a long hill. I thought the car just stalled so I tried to bump start it like 3 or 4 times. Well I figured out what happened and replaced the t belt and it fired right up and ran great. None bent.

.... well ran great till i blew the head gasket.

I'd just try and put a new belt on it first. Do the water pump while you're in there as good preventive maintenance. If it doesn't run like before then I'd pull the head. That may not be the best way to go about it but that's what I'd do.

:edit: Just saw the post about the head swap. My bad. Go for it!

why are you replying to this? do you not see the date? he has put a new head and timing belt on the car and it runs fine. i even stopped by and helped him about a year ago. later.

[I<3MyHonda]

I appologize. I didn't check the date I was just browsing the new posts. I'll check before I post from now on.