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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
quicksilverdon's Avatar
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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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Old 27 Mar 2014, 10:46 pm
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Default Re: Bent valves after timing belt

AutoZone, O'Reily, Rock Auto all show complete heads or complete minus cams in the $500 range. Don't know the quality.
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Old 28 Mar 2014, 09:43 am
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Default Re: Bent valves after timing belt

Rock Auto is usally a pretty good place to start I personally like NAPA had lots of good luck and when soemthing did go bad they steped up and made it right
but really a good machine shop shouldnt be a lot diffrent if you can firn a good one id ask Uptown he know a lot about heads him or Nitro
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Old 28 Mar 2014, 09:49 am
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Default Re: Bent valves after timing belt

I've bought rebuilt heads for other cars online before and was very happy. Usually the warranty is better and you can read the sellers feedback before you buy.

Here's a link to a rebuilt one on eBay. It's $300 and that includes shipping. And they will also accept your head as a core even if it is ruined and return shipping for the core is free. That's a real plus. You will need to call them to assure it will fit your 2001 PT, but it looks like the right one:

Chrysler PT Cruiser 2 4 Dual Cam Rebuilt Cylinder Head Valves and Springs Only | eBay


However, have your mechanic pull you head first and make sure you of what you really need. The valves in a PT cruiser should not hit during timing belt failure except under very extreme circumstances. And even if they did, you might just need one new valve and a rebuild.

PS: A rebuild for these OHC aluminum heads can sometimes run over $200. So getting a head rebuilt and ready to go for $300 online is likely a great deal.
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Last edited by Handy_Cruiser; 28 Mar 2014 at 10:00 am.
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Old 28 Mar 2014, 11:49 pm
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Default Re: Bent valves after timing belt

I've got several used PT Heads in Stock.
'01 needs to have an '01 head.
The heads have been excellent items since the first design was introduced in 1995, although the second design (PT) does burn valves now and then.
I can get pics Monday (or perhaps Sunday night) if it checks out 100%, I'll cut you a bit of a break and do $135 (+ ship) if you agree to send pictures of these bent valves!!!

Head is 38 lbs shipped from 55403.
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