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CamaroCracka · 09-18-2021, 02:41 PM

When I was running at NCM the banjo bolt for the boost reference on the wastegate came loose and then I noticed I was getting blow by out of the oil filler cap/filter. I made sure the catch can was working and then did a compression check. 5&7 were at 120 while the rest were 180 to 200.

I pulled the head today and took some picks. I generally let the machine shop do the internals so I don't know if these scratches look bad enough to be the problem or if they are fairly normal. I can't feel them, but I guess if I could that would mean I needed to bore the cylinders. I'm hoping to have these honed and new rings put in.

09-18-2021, 02:41 PM	#1
CamaroCracka Drives: 2010 Turbo LS3 Join Date: Dec 2009 Location: Palm Bay, FL Posts: 3,036	Do These Scratches Look Bad Enough to Kill Compression When I was running at NCM the banjo bolt for the boost reference on the wastegate came loose and then I noticed I was getting blow by out of the oil filler cap/filter. I made sure the catch can was working and then did a compression check. 5&7 were at 120 while the rest were 180 to 200. I pulled the head today and took some picks. I generally let the machine shop do the internals so I don't know if these scratches look bad enough to be the problem or if they are fairly normal. I can't feel them, but I guess if I could that would mean I needed to bore the cylinders. I'm hoping to have these honed and new rings put in. Attached Images __________________ 2010 SS - Kind of an On3 kit, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1 brakes. 2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. Gen6 ZL1 brakes.