Thinking about DB9 .
Thinking about DB9
.
I have been thinking about selling my Vantage and getting a DB9. However my main concern and it is a huge concern is engine tick. Does anyone know when the engines stoped having the tick problem? I cant seem to find a solid answer what year or engine number where the tick stoped having. Please advise if you have an answer. Aston 1936 talked about it with Mike from Bamford Rose but I cant seem to find an answer.
astonowners.com has a huge thread about this. Some of the members there have been creating videos and rebuilding V12s that suffer from the tick. Probably worth signing up for a free account to view the forum.
The "tick" seems to primarily affect early DB9s, and a very few DB7s and Vanquishes. Most of the research into this is being done by a couple of independent AM shops in the UK. One says the cause is the liner design (which was modified/improved in later engines, but I don't when the change was made), while the other attributes it to cylinder liner ovality and the wrist pin/small end bearing. I think both shops say they have not seen an engine from MY2009 (when the 470 hp engine was introduced and which added an oil channel to the wrist pin/small end) or later with the tick. My overall take is that if you get a MY2009 or later car you are extremely unlikely to have the tick.
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