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Whats wrong with the cylinder wall in this pic? #1449729 06/09/13 08:28 AM 06/09/13 08:28 AM
Joined: Nov 2008 Posts: 833 MN hemidup OP super stock
hemidup OP super stock Joined: Nov 2008 Posts: 833 MN	Its a fresh rebuild. The engine was only turned over by hand. A guy from another forum posted it...I replied with my .02 and got flammed. 7736032-whatswrongwiththis.jpg (352 downloads) Jerry Williams.

Re: Whats wrong with the cylinder wall in this pic? [Re: hemidup] #1449730 06/09/13 08:37 AM 06/09/13 08:37 AM
Joined: Feb 2008 Posts: 339 western PA S stevet340 enthusiast
stevet340 enthusiast S Joined: Feb 2008 Posts: 339 western PA	other than the vertical scoring/scratches and lousy hone job, nothing... can't tell anything more unless you actually measure it... lol

Re: Whats wrong with the cylinder wall in this pic? [Re: stevet340] #1449731 06/09/13 08:44 AM 06/09/13 08:44 AM
Joined: Nov 2008 Posts: 833 MN hemidup OP super stock
hemidup OP super stock Joined: Nov 2008 Posts: 833 MN	Besides the bad hone job, I also stated that the the top ring and 2nd are almost stacked on top of one another. And check out the ring gaps from the scoring marks, looks to be close to a 1/4". Last edited by hemidup; 06/09/13 08:52 AM.

Re: Whats wrong with the cylinder wall in this pic? [Re: hemidup] #1449732 06/09/13 08:58 AM 06/09/13 08:58 AM
Joined: Mar 2006 Posts: 9,848 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,848 MI, usa	I see scratches. I would assume they weren't there before assembly, but that information is not given here. My bet is there are burrs left on the ring after filing the gaps.The one scratch is beyond ring travel. It's possible one of the oil rings got pulled out of the groove and is folded next to the piston. Do you really think someone built a motor with a .250" gap? Doug

Re: Whats wrong with the cylinder wall in this pic? [Re: dvw] #1449733 06/09/13 10:19 AM 06/09/13 10:19 AM
Joined: Jan 2008 Posts: 4,255 Canada WO23Coronet master
WO23Coronet master Joined: Jan 2008 Posts: 4,255 Canada	Whats wrong with the hone job? Not doubting its no good just want to know what is bad about it

Re: Whats wrong with the cylinder wall in this pic? [Re: dvw] #1449734 06/09/13 10:37 AM 06/09/13 10:37 AM
Joined: Nov 2008 Posts: 833 MN hemidup OP super stock
hemidup OP super stock Joined: Nov 2008 Posts: 833 MN	Quote: I see scratches. I would assume they weren't there before assembly, but that information is not given here. My bet is there are burrs left on the ring after filing the gaps.The one scratch is beyond ring travel. It's possible one of the oil rings got pulled out of the groove and is folded next to the piston. Do you really think someone built a motor with a .250" gap? Doug Looking at and comparing the width of the scares vs the piston spark plug dimples is about .250" and I agree and told him the scares on the cylinder walls were from burrs. A couple minutes with a jeweler's file should have resolved that instead of cutting through the fresh hone job. Jerry Williams.

Re: Whats wrong with the cylinder wall in this pic? [Re: WO23Coronet] #1449735 06/09/13 10:44 AM 06/09/13 10:44 AM
Joined: Nov 2008 Posts: 833 MN hemidup OP super stock
hemidup OP super stock Joined: Nov 2008 Posts: 833 MN	Quote: Whats wrong with the hone job? Not doubting its no good just want to know what is bad about it It was supposed to be honed on one of the latest/greatest top notch machines. I told him it looked more like it was done with an electric drill and a "rabbit turd" which btw, I've used in the past on some of my old garage built engines. Last edited by hemidup; 06/09/13 10:45 AM. Jerry Williams.

Re: Whats wrong with the cylinder wall in this pic? [Re: hemidup] #1449736 06/09/13 11:22 AM 06/09/13 11:22 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	I think he(builder) didnt deburr the rings... that can and will give you the vertical scratch

Re: Whats wrong with the cylinder wall in this pic? [Re: hemidup] #1449737 06/09/13 12:10 PM 06/09/13 12:10 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: Quote: I see scratches. I would assume they weren't there before assembly, but that information is not given here. My bet is there are burrs left on the ring after filing the gaps.The one scratch is beyond ring travel. It's possible one of the oil rings got pulled out of the groove and is folded next to the piston. Do you really think someone built a motor with a .250" gap? Doug Looking at and comparing the width of the scares vs the piston spark plug dimples is about .250" and I agree and told him the scares on the cylinder walls were from burrs. A couple minutes with a jeweler's file should have resolved that instead of cutting through the fresh hone job. No doubt that's what the scratches are caused from. The one scratch that starts at the top of the bore was caused upon assembly and is a dead giveaway. A little time with a wet stone and that problem wouldn't be there. Doubt if he folded over a oil ring scraper, but it's possible - and it occurs more often than most people think. I've done it before, which is why I only use tapered ring compressors any more. A very minimal bore chamfer, like the one in the pic, can sure cause it. Last edited by Crizila; 06/09/13 12:14 PM. Fastest 300

Re: Whats wrong with the cylinder wall in this pic? [Re: Crizila] #1449738 06/09/13 09:09 PM 06/09/13 09:09 PM
Joined: Nov 2008 Posts: 833 MN hemidup OP super stock
hemidup OP super stock Joined: Nov 2008 Posts: 833 MN	Quote: Quote: Quote: I see scratches. I would assume they weren't there before assembly, but that information is not given here. My bet is there are burrs left on the ring after filing the gaps.The one scratch is beyond ring travel. It's possible one of the oil rings got pulled out of the groove and is folded next to the piston. Do you really think someone built a motor with a .250" gap? Doug Looking at and comparing the width of the scares vs the piston spark plug dimples is about .250" and I agree and told him the scares on the cylinder walls were from burrs. A couple minutes with a jeweler's file should have resolved that instead of cutting through the fresh hone job. No doubt that's what the scratches are caused from. The one scratch that starts at the top of the bore was caused upon assembly and is a dead giveaway. A little time with a wet stone and that problem wouldn't be there. Doubt if he folded over a oil ring scraper, but it's possible - and it occurs more often than most people think. I've done it before, which is why I only use tapered ring compressors any more. A very minimal bore chamfer, like the one in the pic, can sure cause it. Its a G3 hemi and I take it, its the factory bore champher. Knowing the ring pack design I doubt that the oil ring folded over. My biggest concern is from looking at the scares on the cylinder wall. The top ring looks to be at 9 0'clock and the 2nd ring is at 10 o'clock and both with a wide ring gap. Don't know where the oil ring is located. He just asked if there might be a blowby/smoke issue. Thoughts? Last edited by hemidup; 06/09/13 09:10 PM. Jerry Williams.

Re: Whats wrong with the cylinder wall in this pic? [Re: hemidup] #1449739 06/09/13 09:13 PM 06/09/13 09:13 PM
Joined: Jan 2003 Posts: 9,670 Lima, Peru domingo EL Master
domingo EL Master Joined: Jan 2003 Posts: 9,670 Lima, Peru	tear it down, inspect, and bolt it back together?? I doubt those lines would cause any problems if you cant feel them with your fingernail, if you do... a light rehone should take care of it? sure looks like burrs on the rings after being file fitted to the bore....

Re: Whats wrong with the cylinder wall in this pic? [Re: domingo] #1449740 06/10/13 02:01 PM 06/10/13 02:01 PM
Joined: Jun 2006 Posts: 5,163 CT GTX MATT master
GTX MATT master Joined: Jun 2006 Posts: 5,163 CT	Is it a street engine? It doesn't look like a 1/4 inch gap to me, if it is maybe I'd be concerned but it doesn't appear to be from my POV. Once its together I doubt the guy will know the difference Last edited by GTX MATT; 06/10/13 02:02 PM. Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street

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