Bad Mystery Engine Noise

Hi Smg, yes you know last night I measured the inlet verses the exhaust followers with my vernier and the exhaust are definately smaller. As you rightly say the vernier is no good for this kind of job so I have just been out and bought a large micrometer.
I wasn't going to post anything here about my thoughts just yet on what I think I might find until I knew for sure. I figured people may be tiring of my theories on this subject and the last thing they want is to hear the lastest. But unfortunately as You will know it's a process, one follows a theory until it leads somewhere or goes nowhere and then you move on. Hopefully at the end of this we alll will know something new, thats a big incentive for me to find the definitive cause.
Think I'm getting really warm now...
All the best, Bell

 

Cheers Paul, Bart for your kind words, it is really frustrating that a link in the Mondial section to this thread was deleated by a moderator not constructive in my opinion.

Anyway today the 2 new followers arrived and despite being told by the Bugatti, Ferrari experts etc in my area, that my followers are not the issue here I do feel that they are a big issue.
The more I look at the pictures of follower no.4 the more I feel that this is a honing issue revealed by a change of oil with a lower viscosity.
I refer back to the fact that a polished mirror surface holds no oil and I really do feel this is the problem.
Now I may be forced to eat my words here but I am feeling confident and more so now because the new followers have a honing texture like the himalayas, this says it all I think.
Anyway here are some pictures and video that hopefully back up my theory.
Also just look at No.4 follower now! And it's still in spec ie it measures the same size as the new one as you can see in the video.
All the best, Bell Bloke.

Short Video this time:
https://www.youtube.com/watch?v=j1vP1-YggCs&feature=youtu.be
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vaccarella QUOTE:That's just plain silly. Do we have any influence over these rules? Surely a mod on here should understand the Ferrari model / engine overlap matrix and act accordingly. Otherwise maybe they shouldn't be a mod...

Yes I know..... it's now the case that the Moderator deleated the link in the Mondial section to this thread. So unless you are a regular here and know the formum the new Mondial guys will be completely unaware of this thread even though it's actually about something that concerns them. Also I know from experience here that my threads can be deleated...bang! just like that.. What can you do. Complain and you get banned.


Anyway here's a stupid thing I did today!!

https://www.youtube.com/watch?v=Q6bc7DqEu8o&feature=youtu.be

 

Well Guys, the engine is back together all followers are honed with 2 new followers on number 4 cylindar.
I was going to run it but it was late and I would like to do some final checks.
I'm off to classic LeMans for 4 days so won't run the engine until Monday.
Thought I'd wait also because if the noise is still there it will spoil my weekend ha ha.
Anyway, boy am I getting good at doing cam belts of these cars now!
If the car runs perfect and the noise has gone, then I will run it for 1000miles and pull the followers again to see how they fair against the 2 new ones. I see this now as a data gathering excercise and a bit of fun if all goes well. It'll be useful to know if rehoned followers work well.
Also I wonder if belt failiures in the past have been due to follower problems...
Anyway, this is jumping the gun, can't go down that avenue until this latest case is proved one way or the other.
Many thanks for your kind comments and continued interest, Bell Bloke ;-)

 

Ha ha Mondial Whisperer! That's great ;-)
Hey Guys will be in touch on Monday.
All the best, Bell

 

Hey Guys really sorry for not updating you, truth is I haven't had a chance to get on the car as planned so it looks like this weekend now. As soon as I know I will fill you in.
Sorry to keep you hanging on, believe me I want to know too.
Will catch up later, all the best, Bell.

 

Hey Guys really sorry for not updating you, truth is I haven't had a chance to get on the car as planned so it looks like this weekend now. As soon as I know I will fill you in.
Sorry to keep you hanging on, believe me I want to know too.
Will catch up later, all the best, Bell.