How do these cylinder bores look to you guys?

[Matt300ZXT]

For you guys who have rebuilt engines, or do machine work, tell me how these bores look to you. To me, with the few engine blocks I've owned that were out of a car and I intended to use, the bores look to me like a final hone would knock the crud off and be good to go, maybe a slight overbore. However, I'm sure you much more experienced guys will be able to tell more from a pic than I can.

http://i50.photobucket.com/albums/f311/Matt300ZXT/CA18DET/076_zpsbb47cb1b.jpg (http://s50.photobucket.com/user/Matt300ZXT/media/CA18DET/076_zpsbb47cb1b.jpg.html)
http://i50.photobucket.com/albums/f311/Matt300ZXT/CA18DET/073_zps767d98ee.jpg (http://s50.photobucket.com/user/Matt300ZXT/media/CA18DET/073_zps767d98ee.jpg.html)
http://i50.photobucket.com/albums/f311/Matt300ZXT/CA18DET/072_zps9cbedafa.jpg (http://s50.photobucket.com/user/Matt300ZXT/media/CA18DET/072_zps9cbedafa.jpg.html)
http://i50.photobucket.com/albums/f311/Matt300ZXT/CA18DET/074_zps0cc8ee0e.jpg (http://s50.photobucket.com/user/Matt300ZXT/media/CA18DET/074_zps0cc8ee0e.jpg.html)
http://i50.photobucket.com/albums/f311/Matt300ZXT/CA18DET/071_zps90702eec.jpg (http://s50.photobucket.com/user/Matt300ZXT/media/CA18DET/071_zps90702eec.jpg.html)
http://i50.photobucket.com/albums/f311/Matt300ZXT/CA18DET/075_zpse37008b8.jpg (http://s50.photobucket.com/user/Matt300ZXT/media/CA18DET/075_zpse37008b8.jpg.html)

[Mikester]

Here is my SR during rebuild... Bored .5mm over stock (86.5mm)...

http://farm9.staticflickr.com/8005/7656485440_4aec91563d_b_d.jpg

Part of the point of honing a cylinder wall is that there is a perfect seal and NO crud lol...

With that, my experience trails off sharply... Let the builders/machinists chime in from here... However, from the pics you posted, those walls haven't been properly honed unless the machinist was maybe trying to salvage the stock bore(?).

[codyace]

hard to see on the phone, but a good bottle brush job should bring that right back up

[Matt300ZXT]

Those arent the handy work of a machinist, theyre the bores as they sit after being a used engine with the head removed. I know what a bore is supposed to look like after a proper trip to the machine shop lol

I was posting the pics so machinist and builders could give their opinion on whether or not the bores looked serviceable or trashed.

[dawagarage]

well, theres no ridge on the top, so thats good.

but i really cant tell if its out or round/has weird wear to it without micing it

[codyace]

Those arent the handy work of a machinist, theyre the bores as they sit after being a used engine with the head removed. I know what a bore is supposed to look like after a proper trip to the machine shop lol

I was posting the pics so machinist and builders could give their opinion on whether or not the bores looked serviceable or trashed.

serviceable

[Kingtal0n]

Those arent the handy work of a machinist, theyre the bores as they sit after being a used engine with the head removed. I know what a bore is supposed to look like after a proper trip to the machine shop lol

I was posting the pics so machinist and builders could give their opinion on whether or not the bores looked serviceable or trashed.

if the engine still has the crank in it, and oil pan on, fill it with oil, lubricate the cylinders, and spin the engine by hand. If the surface is smooth to your fingers and came from a running engine, and spinning the engine removes most of the visible debris, and it spins freely easily, then you should be able to follow the FSM specification for re-assembly. there should be a measurement for the bore etc...

[Mikester]

Those arent the handy work of a machinist, theyre the bores as they sit after being a used engine with the head removed. I know what a bore is supposed to look like after a proper trip to the machine shop lol

I was posting the pics so machinist and builders could give their opinion on whether or not the bores looked serviceable or trashed.

OH okay... DUH lol...

My bad :wiggle:

[shogun!]

Get it honed. Buy a new set of rings and file the end gap.
Run in the piston rings.