Tappet issues

Can anyone shed some light on why this has happened to my new ish engine?
Just bought one & had it running for about 500miles & this happened on way back from a show...... why would this happen with a new engine out the box? Have I done something or was it manufacturer issue??


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Did you run the cam in immediately you first started the engine?

 

@Robert Parry

 

Are they made of cheese ?

 

They're t1 followers, two have worn the following bit right off.

 

Were both of them on the same cam lobe?

 

I`m guessing you have split the case . this may have warranty implications

 

Is this on a 1905cc?
Which cam are (were) you using?
Which cam followers?
Did you put the cam in each case half and check the clearance between the cam/case/follower at full lift?

 

T1 followers don't come out without splitting the case so it's too late for that. Maybe the engine builder supplied the photo after stripping it down.
The PO may be in dispute with the builder and looking for ammo on here. He's gone quiet since starting the thread, I have a feeling we have 5% of the story...

 

Those ones will come out without splitting the case ..........

 

Not the one on the left though.

 

Sent to me after case was split by the builder.....
Just would like to know what would case this issue.....


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The builder has had the benifit of hands on stripping and inspecting everything. What does he reckon?

 

Waiting on diagnosis.....


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My diagnosis .... It's fecked

 

Ah, but who's fault?
1) part
2) builder
3) owner

 

If within 12 months, does it matter?

 

I think all engines should come with cam pre- run in ... It's very difficult to say where the blame lies unless parts are known to be faulty