Clanging from the bottom end - phase2 172...oops

[c7borg]

After doing a sprint day at Curborough about half way round my first timed lap the engine gave way. It still drives but makes a clanging noise when revved.
I trailered it back home and will need it inspecting but has anyone know of what it's likely to be, and what can I do to increase the robustness of the bottom end?

any help appreciated

 

[rich-6]

Spun a bearing, A knocking noise yeah?

Has it been run Low on oil

 

[c7borg]

Spun a bearing, A knocking noise yeah?

Has it been run Low on oil

not since I've had it although when I bought it I had to change the sump as it had a crack in it..hmm a story is unfolding..

so does this mean just new bearings do you think..?

 

[mini-valver]

Did you use any silicone on the sump when you fitted it?

 

[rich-6]

not since I've had it although when I bought it I had to change the sump as it had a crack in it..hmm a story is unfolding..

so does this mean just new bearings do you think..?

Its hard to say there are so many possiblilities You could end up needing a new crank if its bad

 

[c7borg]

Did you use any silicone on the sump when you fitted it?

nope.. just the gasket it seemed to seal okay

 

[c7borg]

Its hard to say there are so many possiblilities You could end up needing a new crank if its bad

I guess its a case of opening it up and assessing the damage.. do many people bother getting things balanced lightened or hardened..? as now would be a good time if its worth while

 

[T.Trophy]

Just squeeze a meg 225 lump in there for the price it could cost for a full gasket set and any machining work thats required, an engine swap might be the cheaper option.

 

[c7borg]

Just squeeze a meg 225 lump in there for the price it could cost for a full gasket set and any machining work thats required, an engine swap might be the cheaper option.

anyone know where one is up for sale?