T
tc86gn
Guest
Can anyone give me some input?I have a set of .030 forged TRW's. I get .004 and .0045 piston to bore clearance at the bottom of the piston skirt. I am not a machinist or nothing but I had to take my block and stuff to get the crank turned .010 and new cam bearings and get rods done cause I spun #5rod bearing. The shop calls me back and says that my block has a clearance piston to bore of .007 and .008, as I wanted to see if they would hone a small scuff out of one of the cylinders. That threw up a red flag with me cause I know the guy that did the machine work its just that he is 4 hours away, and these guys are 45 min. away. Anyway to top it off, they also said that the block should be scrapped because the front cam bearing journal was out of round. Holy Cow!!! I was very suspicious so I went to the shop and picked up my stuff and got out of there before they could touch my crank. Funny thing was that they could not answer me when I asked them how they determined the Cam bearing journal was out of round with the bearing still in it!
I checked it. It is out of round by .001. BIG DEAL. I am pretty sure that it is acceptable up to .005. I am just glad I got my stuff out of there. Am I correct? and am I measuring the piston at the right point? Any help would be appreciated. Thanks in advance.
TOM
I checked it. It is out of round by .001. BIG DEAL. I am pretty sure that it is acceptable up to .005. I am just glad I got my stuff out of there. Am I correct? and am I measuring the piston at the right point? Any help would be appreciated. Thanks in advance.
TOM