Need some advice on S52 rod clearances

[TobyB]

Oh, right, then- if you're measuring a clamped rod with shell IN it, that's about
it. I thought you were going by the rod ID without shell, then adding the shell mathematically.

You can have the rods resized- the M10 rods seldom need it, but it's standard practice
for most 'real' builds.

And the 'mix and match' trick is an old one...

t

[jph]

Oh, right, then- if you're measuring a clamped rod with shell IN it, that's about
it. I thought you were going by the rod ID without shell, then adding the shell mathematically.


You can have the rods resized- the M10 rods seldom need it, but it's standard practice
for most 'real' builds.


And the 'mix and match' trick is an old one...

t

I did use the method of simple addition to see if the advertised shell thickness would bring me to the correct oil clearance, but would never use this method to determine the final clearance. It was just a sanity check to TRY to help me avoid wasting money on the wrong bearings but in this instance it didn't help me much!

[jeffnhiscars]

Didn't help with the bearings or your sanity :)

[jph]

Ok, so the new .001" oversize bearings showed up Friday evening and I got around to getting them in the rods and all torquing the caps down tonight. And wouldn't you know it all six checked out GREAT! I'm at .0020" on four rods and .0019" on two rods. This is perfect and right where I wanted to be. I didn't even bother trying to mix shells before measuring. I just popped out all the STD bearings and used all 12 of the oversized shells on a hunch and bingo. Thanks to all who contributed to this thread.

Lesson learned here for me (and hopefully others reading this in the future) is that if you're on the low side of standard spec on the crank journals just start with the .001" oversize bearings and go from there. I could have saved myself about a month of downtime and around $300 doing it this way. Live and learn I guess.