Where to get new con rods? 120 LDrive

[brandonv]

I've got a freshly bored block, fresh crank, new pistons, new bearings and gaskets but my rods have some light pitting on the big end. Where... oh where can I get new rods? Or can I let it slide? How will the pitting affect the new roller bearings over time?

Lastly, my bearing cages appear to have some hairline stress cracks. I honestly cannot tell if they are truly cracks (as they're only visible on one side) or just marks from casting. Anyone see this before? If they need replacement can I just buy the cages as I already have the rollers?


thanks!

 

[rodbolt]

Re: Where to get new con rods? 120 LDrive

the cages are stamped not cast.
new con rods may be NLA. used in good condition they are availible.
check some of the iboats vendors.

 

[brandonv]

Re: Where to get new con rods? 120 LDrive

I had a chance to investigate a little further and my cages are good. When looking at them under the shop lights it looked like there was hairline cracks, but a shot of cleaner and some bright sunshine made that problem go away. Must've been residual oil flung across them which appeared like hairline cracks.

Now for my rods.... 3 of them cleaned up nicely, but the 4th has one spot that is galled/pitted. It's not deep, but it is large enough to catch a scribe as I slide it over it. What will this one spot do to my rollers over time?

The other 3 have no noticeable defects after a proper cleaning. I guess I had too many cold ones last night!

 

[bayliner12]

Re: Where to get new con rods? 120 LDrive

i would get some dye to make sure those arnt truly cracks

 

[Frank Acampora]

Re: Where to get new con rods? 120 LDrive

If the galled spot is less than 20 % of the length of the roller, it will ride right over it and not even know. HOWEVER: if it were my rod, (and I have extras), I would summarily throw it away.

Remember: the bottom end of the cap has an opening about 20% of the width of the roller---it is, however under a much lighter load.