Cracked Head - Triumph675.Net Forums
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post #1 of 6 Old 08-09-19, 10:21 Thread Starter
Vince Accardo
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Cracked Head

I’m looking for thoughts on what I found in my 09 Daytona. There was water in the oil so I knew it would be bad, but the cylinder head is cracked on the timing chain side(where the bolt goes through the side of the head). What do you think would have caused that failure point?
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post #2 of 6 Old 08-09-19, 10:22 Thread Starter
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Pics of the crack
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post #3 of 6 Old 08-09-19, 11:36
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Frozen coolant.
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post #4 of 6 Old 08-09-19, 15:41 Thread Starter
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Makes sense, thanks Arawn. Quick question, are the only differences between the 2006-2008 and 2009-2012 motors in the head? I’m thinking about looking for a complete motor from a 2009-2012 bike rather than just the head by itself. That way I’ll have a spare short block. I know there was a difference in the cam chain hydraulic tensioner, but if I were to run a manual tensioner that would fix that.
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post #5 of 6 Old 08-10-19, 08:01
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Quote:
Originally Posted by Vince Accardo View Post
Quick question, are the only differences between the 2006-2008 and 2009-2012 motors in the head?
Oil/water pump is different too. It was changed to address some issue with the older pump that gradually damaged the heat exchanger (due to pressure pulses) at high revs. Only relevant for race or frequently tracked bikes.
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post #6 of 6 Old 08-10-19, 10:54
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Next time fill it up with antifreeze; IMHO there is no reason to run distilled water in the street.
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