Doesn't that happen every time you hit the throttle? Check those belts move around during engine load changes....
As I pointed out in post 48, it happens with every rotation. Tension in the belt is far from constant. And as I noted in another thread, when these cars were new you took them to the dealer for a free 1.2k mile check up at which time the timing belts were to be inspected and tension adjusted if necessary. So it's hard to believe that you could reuse a belts after 450 miles.
Right, "reuse", not that I would. Not sure I understand the question about frequency. There is a simple formula that can be derived for a wire under tension that relates frequency to tension, the length of the wire and the mass per unit length. That equation would be approximate for a timing belt, but the fundamental result would be the same. Belt tension is related to frequency squared. So my measuring the frequency when the belt is plucked you would know the tension, provided you know the relationship between the two. Obviously you don't need to know the relationship, just what the frequency should be.
I think once the belt is removed, replace it otherwise I was told you can re adjust the tension, I believe that’s what that hole on the timing belt cover that shows the nut for the tensioner bearing is for.
I stopped in at continental today to have a chat with a sales friend. I saw Scott. One of the service advisors and I asked him why? He said never never reuse. I said why? because they are cheap! He said. Lol.
I'm 100% sure that the belts can be reused without any problems, but I 'm 100% sure that I wouldn't reuse them in that case. Why?. Because if I reuse the belts and one of them breaks in any moment before the next belt change, I would be the rest of my life thinking that the belt was broken because of reusing it.......
You can re-use a condom as well, but I would do it for the same reason. The consequences of a failure are too high
You can do it with a PC with a cheap microphone and spectrum analyzer software (free downloads available). Or maybe an app for a phone. Or frequency counter software https://audio-frequency-counter.soft112.com/ Just pluck the belt and it will tell you the frequency. But I don't know the correct frequency for the belt.
The builder could have replaced the o rings, and they would still leak if they didn't put a dolop of silicone at the head/valve cover/o ring junction. You can DIY that without removing the timing belts. Just make sure to clean all of the oil out of that area before applying the silicone. I like Ultra Black.
That would be a good time with the ac in the way. But I can see what looks like grey gasket maker on the corners
Another perspective; Harley Davidson have been using toothed belts for their final drives for decades and they are exposed to everything that nature can throw at them. Every time the rear wheel is taken out e.g. to fit a new tyre, the belt is "re-used" and HD don't recommend that you replace the belt every time the rear wheel is removed. I bought my HD in December 2000 and I have never once had to adjust the drive belt tension and the adjusters are exactly where they were when I picked it up from the dealer in 2000. HD belts use a Kevlar base and Kevlar doesn't stretch. Do Ferrari belts use Kevlar? Whilst the HD belts don't rotate as fast as Ferrari cam belts, I suspect they're put under much more load/torque. From what I've seen and read, it appears to me that the tensioners are the potential weak link, not the belts, so if both are in good condition, I think you can refit them without any undue concern. Just my unqualified opinion of course. Paul
Almost 70 posts on the subject. Why are we even discussing this? LOL. If forking out $36 for new belts is going to cause missing a meal, I would opt for reusing the motor oil in your Ferrari and save 50 bucks!
As rifledriver would say .. “ please share your vin # so we may know which cars to avoid in the future.”
Well I never said I was gonna reuse it. I asked why couldn't it be reused. And it turns into this. The best answer is don't reuse because they are cheap.
There are 73 posts. Everyone pay 50 cents and I won't scare everyone or myself for reusing them. WHiCH I NEVER SAID I WAS
I may still have the 2 belts I pulled off my car in December... they're yours for $18 + shipping. PM if interested.
