308 308 QV question - Ferrari Life
 
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post #1 of 10 Old 12-21-2013, 01:11 PM Thread Starter
 
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308 QV question

Hello, I need your advise/opinions. I was changing the timing belts on my 308 QV.
One belt went on with no problem. The other belt will not go on. I had Ferrari mechanic come over after work and he tried to put the belt on and was not able to fit the belt over the gears either. He suggested I loosen the exhaust cam gear bolt and push the cam gear over enough to get the belt on and then push the cam gear back to it's original position.

Here is my FEAR. When I tried to loosen the cam gear bolt with my impact wrench, the gear rotated from the 1:00 position to the 5:00 position and stopped. The cam gear bolt did not loosen.

Did I bend a VALVE??????
Thanks in advance for your help
Brent.
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post #2 of 10 Old 12-21-2013, 01:25 PM
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Quote:
Originally Posted by Hornet View Post
...Did I bend a VALVE??????
Probably not one, but several....

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post #3 of 10 Old 12-21-2013, 04:28 PM
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Ouch. Best way to know is to get the cam belt on and then do a leakdown test.

If you weren't holding the cam with a strap wrench or something and it spun at the full speed of the impact gun, I'd be surprised if there aren't a few bent valves.
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post #4 of 10 Old 12-22-2013, 04:48 AM Thread Starter
 
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Thanks Guys
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post #5 of 10 Old 12-22-2013, 08:28 AM Thread Starter
 
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What do you Guys think it would cost in parts to R&R the cylinder head and replace the bent valves.


What do you Guys think the value of selling the car is.
It is a 84 QV Black 89k miles. Full service history from original owners. Bad A/C compressor.
16" Factory alloy wheels, tool kit, decent interior.

Not a lot of similar 308's in my condition to compare prices with.

Thanks again Guys.

Brent
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post #6 of 10 Old 12-23-2013, 03:43 PM
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Just my $.02, but I wouldn't jump to conclusions. I'd get the engine roughly timed via the marks on the cams with the new belts on, then check the leakdown of each cylinder. There's no way for any of us to know through the internet how hard the cam was spun.

If you do the work yourself, it's only a few hundred bucks for a head gasket, valve cover gasket, and a few valves (depending on how many you need). There are also a few independents who could be of great help with a job like this - dealerships will most likely be too expensive.

Another thought to keep in mind is that you can remove the rear cylinder head in the car. For the front cylinder head you'd have to remove the engine.

One step at a time though - leakdown test.
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post #7 of 10 Old 12-24-2013, 06:39 AM
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Depends on the situation.

Like Bret said, I you can do the work yourself, pulling the motor, pulling the heads off and then doing all the "other" fun things in between, you can save a lot of money.

But If it's something you just want to make profit on, I say just sell it. And move on.

Now if you love it and want to keep it, well that's a whole different story.

I know people that had cracked heads and the mechanic told them to sell it but they loved their baby's and had them repaired. $20k+ later they are driving around happy with their 308s.

Good luck on what you decide to do.

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post #8 of 10 Old 01-02-2014, 09:32 AM Thread Starter
 
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Thanks Bret, for the positive advice.
Brent
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post #9 of 10 Old 01-06-2014, 04:02 PM
 
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i love black... if its has light color interior and its a euro Gtb, id be interested in it.

pm please... lets talk!

rs
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post #10 of 10 Old 01-06-2014, 04:55 PM
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In for a penny, in for a pound. At this mileage, both cylinder heads are likely in need of a complete valve job anyways. The leakage through the valves is probably too high to determine just how good the rings are as well. If you pull one head, you should pull the other. Then you should leak test the rings only and get ready for a bottom end overhaul as well. Most likely a quickie belt service for peace of mind just turned into a $15-20k overhaul plus, plus.


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