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Bent valves after timing belt

 
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Old 19 Mar 2009, 02:29 pm
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Default Bent valves after timing belt

2001 base model - 94k miles - timing belt broke. Estimate for that is around $800 (quite cheap I must say! was expecting $1500).

Mechanic is reporting cylinder 1 no compression, all others OK, so he suspects bent valve - exhaust/intake hit each other. I know it's possible I've got a thread below talking about it.

Anyone have a ballpark figure for this job - its just some gaskets and taking the head off - new valves and some manual work right? (as long as the head is true and uncracked if I recall from the last time I did a head job sometime in the mid-90's)

Anyone have a ballpark on what I should expect this portion to cost?
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Old 20 Mar 2009, 06:07 pm
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Default Re: Bent valves after timing belt

Please ask the mechanic how a compression check makes sense with no timing belt? The cams won't move w/no belt, so wherever the cams sit, that's where the valves stay. I can't see how he can determine valves are bent without taking the head off.
$800 is a good deal.
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Old 20 Mar 2009, 06:24 pm
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Default Re: Bent valves after timing belt

Quote:
Please ask the mechanic how a compression check makes sense with no timing belt?
That's exactly whats been nagging me in the back of my mind since he told me that yesterday.

I thought "perhaps" (without knowing all that much and the last head I took off was in the mid 90's) the valve springs would force the cam so that all the valves would close.
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Old 20 Mar 2009, 06:42 pm
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Default Re: Bent valves after timing belt

I'm not an expert, either, but I think it's a reasonable question...
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Old 23 Mar 2009, 10:52 am
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Default Re: Bent valves after timing belt

OK, had a talk with the mechanic this AM. IT looks legit - he says that he was rotating the cams manually to close the valves. He's got the valve cover and plenum off along with the top timing chain cover so he has enough access to actually tell that the valves "should be closed" on the cylinder he's testing.

Additionally he reports cylinder 1 has no compression at all, valve is down and not coming up, cylinder 2,3 low compression and cylinder 4 is fine.

So it looks like I'm ponying up for a head job after all.

Does anyone know where to get a full rebuilt head with valves and all ready to go?
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