broster
Premium Member
Registered: 6th Dec 02
Location: Drives: E39
User status: Offline
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We built a 2.5 4 pot duratec for a very good customer of ours, had a crank done, billit item, not cheap.
rev'd to 7900 (2.3's go to 8500 all day long) company said it would be ok, so happy days.
the morning of the Performance ford track day the customer gets to the top of our road and notices a funny noise.....
little investigation found this:
sending it off to be xray'd and crack tested, believe it to be a flaw with the material by the way it snapped, or it cracked when it was nitrided....
anyway, time to move on to bigger and better things with the engine now!
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Daimo B
Member
Registered: 20th Mar 00
User status: Offline
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That the Fiesta you posted about?
Was going to ask about the higher revs with the larger displacement. Thats a big ass failure though!!!!!!!
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broster
Premium Member
Registered: 6th Dec 02
Location: Drives: E39
User status: Offline
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yeah was the fiesta i posted about, absolute beast, recon the rods would fail before the crank if it was down to revs....
had some "experts" look at it and it has failed along a sharp edge on the crank, deffo a material problem, having cosworth analise it tomorrow tho to give us a proper opinion
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JM_16v
Member
Registered: 17th Oct 05
Location: Essex Drives: GLC63S
User status: Offline
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 shame
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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Blimey  that's a big break.
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