To start off this motor is a 1996 GSR motor. I measured everything in the motor and everythign was in spec. I installed new honda oem bearings, honed the cylinders and installed new OEM honda rings. We spun the short block over by hand and it spun with no problems. I did all this 4 months ago when I took a cylinder block service class at school. The motor sat baged up in my garage intull now. Last night I installed the oil pump and rear main. I spun it over with the flywheel bolts a few times to make sure everything was still good. I fliped the motor over to install the head and I noticed that cylinder #2 had a scratch from the top of the piston travel to the bottem. The groove is not deep and I can not get my finger nail stuck. I called the machine shop and he said that this happens all the time and that where the rings but up it is sharp. He told me to remove the piston and use some emery cloth to smoth the ring at the gap and reinstall it. Has anyone heard of/done this before?


Modified by white90rexsi at 6:56 PM 8/16/2006

 

Anyone>?

 

Did you hone the cylinder walls at home or in a shop? what I mean was it a actuall machine that does it or did you hone them out with the hand-held cylinder hone?
if you did it with the hand-held version, I would just give it a light hone again to remove the mark. If that's not possible then you will be fine putting the engine together still...it should run fine and seal properly.

I can't think that a mark made by the piston ring would harm it so much as my b18b had a scrach on 2 cylinder walls from the previous pistons and a light hone fixed most of it. It's sealing perfectly fine. 180 across the deck on a stock engine

 

We had a sunnen ck hone machine but my cyl walls just needed the glaze taken off so we used a ball hone in a air drill. I could go get a hone from the parts store and try and get the scratch out, but its really not that bad. Im going to pull the pistons out and check my ring gap.