Cracked head on my 1.8T :(
03-11-2009, 03:44 PM
#1
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Cracked head on my 1.8T :(
My car was diagnosed with a cracked head at 140,000 miles. Apparently the head had been cracked since 80,000 miles, but only now was it was apparent enough to diagnose.
My question is what causes the head to crack??? I've always kept up with maintenance. I changed the oil every 5,000 miles with synthetic (since day one).
The only thing I can think of is my APR 1+ chip. Do you think my car being chipped since it had 1,000 miles on it contributed to the cracked head?
My question is what causes the head to crack??? I've always kept up with maintenance. I changed the oil every 5,000 miles with synthetic (since day one).
The only thing I can think of is my APR 1+ chip. Do you think my car being chipped since it had 1,000 miles on it contributed to the cracked head?
03-11-2009, 04:46 PM
#3
AudiWorld Super User
I assume a crack between valves?
heat and cool, expand and contract.... the space between the valves is very small, and heads crack there on all motors eventually, especially with 5 valves stuffed in there. and running the elevated temps from overboosting that little turbo (I used to have the same setup until I went BT) I'd guess between the exhaust valves? - PS, I've had the same 3 audi's in your sig - might want to make your sig smaller;its a bit much.
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