So as I was cleaning off the remaining head gasket residue on the block surface, I ran into this little bugger:
![Image](http://img521.imageshack.us/img521/4430/img20130217002457.jpg)
The ridge between the cylinder walls i'd say is about 0.25mm deep. How concerned should I be with this and what might be some viable solutions to straighten this out?
Just some history behind the motor:
I'm the 3rd owner after it was swapped into an AE86.
The head gasket was replaced just before I purchased the car (it was slightly leaking even after it was replaced be the previous owner)
I noticed the block surface wasn't thoroughly cleaned off as there was gunk/surface oxidization under the replaced gasket.
Any help is appreciated.
Thanks!
Ralph