speedmonkey Posted November 14, 2016 Report Share Posted November 14, 2016 Came across an L18 block that wasn't being used any longer from someone who had a few spares. It's just the block with the original main caps which is great. All looks well except that I just noticed a few tiny dimples on the exterior wall of cylinder #1 behind the freeze plug. Seems like it might have been from when the plug was removed at some point. I cleaned it up slightly to get a better look at it. Do you think this will be a problem? Should I have a machine shop drop a weld on it. Was planning on putting the block to use if I could and would just overbore the cylinders .004 (1mm) to 86mm. What do you guys think? Quote Link to comment
Draker Posted November 14, 2016 Report Share Posted November 14, 2016 I've never looked behind the freeze plugs, but it looks like a casting mark. At least the bigger dimple. If it was an impact mark, it shouldn't matter if you boring it anyway. 1 Quote Link to comment
G-Duax Posted November 14, 2016 Report Share Posted November 14, 2016 Don't even think about going after that with a welder. Cast iron doesn't like that. If you are worried about it, have your machine shop use some dye penatrant on the spot, to check for any cracks. 3 Quote Link to comment
Doctor510 Posted November 14, 2016 Report Share Posted November 14, 2016 Came across an L18 block that wasn't being used any longer from someone who had a few spares. It's just the block with the original main caps which is great. All looks well except that I just noticed a few tiny dimples on the exterior wall of cylinder #1 behind the freeze plug. Seems like it might have been from when the plug was removed at some point. I cleaned it up slightly to get a better look at it. Do you think this will be a problem? Should I have a machine shop drop a weld on it. Was planning on putting the block to use if I could and would just overbore the cylinders .004 (1mm) to 86mm. What do you guys think? Might want to check your math: ".004 (1mm) " is not correct, 1mm = ( 0.040") 0.03937008" if you are a nit picker. Quote Link to comment
G-Duax Posted November 14, 2016 Report Share Posted November 14, 2016 Pretty large nit....... But maybe he's like me, and has arthritic, shaking hands, that don't always follow the commands of the brain, and accidentally typed it wrong. 1 Quote Link to comment
speedmonkey Posted November 14, 2016 Author Report Share Posted November 14, 2016 You are correct sir, it was a typo. Thanks for the clarification. 1 Quote Link to comment
scooter Posted November 15, 2016 Report Share Posted November 15, 2016 That Lil guy... dont worry about that Lil guy.. Continue on Quote Link to comment
pdp8 Posted November 15, 2016 Report Share Posted November 15, 2016 Leave it, it's just a leftover defect from the casting process. Welding on it will just risk cracking down the road. The casting process for these blocks was fairly imprecise so there is a large amount of extra material sitting around. 1 Quote Link to comment
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