RCSB build
02-26-2012, 05:05 PM
#291
Hmm, well I've never had to tear down an engine that soon after building it. So I can't say if that looks normal or not. I know that those light scratches are nothing to be worried about though. I just don't know what to say about the coating.
If I was in your shoes, I'd run them and not worry about it. I'd just go through the process of measuring all of the clearances again during assembly. I wouldn't skip any steps this time.
If I was in your shoes, I'd run them and not worry about it. I'd just go through the process of measuring all of the clearances again during assembly. I wouldn't skip any steps this time.
02-26-2012, 05:08 PM
#293
No offset pins. No steps were skipped last time, just getting bad information from 'industry professionals'...this **** is getting old. It really looks like the pistons were side loading in the bore, and if that is true I know exactly why.
02-26-2012, 05:22 PM
#295
Cylinder bores were likely too big. I gave the machinist the pistons and the specs that came with it. Wiseco specified .0035 PTW clearance, I come to pick the block up and it was .0055. Wasn't what Wiseco specs said but he builds engines for a living, all I could do was assume he knew what he was doing. He explained why it had that clearance, making more power makes more heat, etc.
02-26-2012, 05:23 PM
#296
Looks like too much cylinder wall clearance to me.
Also make sure you measure each journal in three spots then rotate 90* and measure again. It's not uncommon for the journals to taper which can lead to the same bearing problem again.
Also make sure you measure each journal in three spots then rotate 90* and measure again. It's not uncommon for the journals to taper which can lead to the same bearing problem again.
