Pardon my lack of knowledge...but I have never seen anything like this. Is this what a spun rod bearing is?











Ok...so now that you guys can see...I have some questions.

1. What caused this?
2. Is rod a nice paper weight now?
3. Can crank be fixed or is it screwed?

All your help is appreciated.

Modified by BoOsTeD_eK at 9:38 AM 10/24/2007


Modified by BoOsTeD_eK at 9:46 AM 10/24/2007

 

Pics not working, just the red X. But if the bearing is scored, discolored from

overheating or just completly trashed looking, I would say thats a spun bearing.

This could have been caused by bad clearence and hard driving, combined. Low

oil and hard driving. If you had a bad head gasket and coolant got into the oil, it

will work its way into the bearing and destroy it also. There may be other causes

but this is all I can think of right now and without being able to see the pics, its

hard to say.

Try to repost the pics....

BTW did you notice a sudden drop in oil pressure?

 

Pics are working.

This is the only one out of the 4 that is screwed up. It is piston number 2.

Also shortblock was purchased this past weekend....I have never personally run this.

 

looks like a spun bearing to me.. and the rod looks discolored so it means it was hot.. if that is true i wouldnt use that rod again

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoOsTeD_eK &raquo;</TD></TR><TR><TD CLASS="quote">Pics are working.

This is the only one out of the 4 that is screwed up. It is piston number 2.

Also shortblock was purchased this past weekend....I have never personally run this.</TD></TR></TABLE>

Whether it is or not, if you have got the engine tore down that far, just put NEW

bearings back in, check clearnce with plasti-gauge.

And if you have taken any rods off, put NEW bolts back in. They dont haave

to be ARP's or the like, but at least new oem.

These are very critical parts and unless you have access to a place that can

actually test them (bolts, not bearings ) Why risk your entire build?

I dont think its worth the risk, altho some ppl risk it and re-use.

Also, I gave a few causes, with hard driving thrown in cause it will accelerate wear

on worn parts compared to driving "normal".

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondasarethebest &raquo;</TD></TR><TR><TD CLASS="quote">looks like a spun bearing to me.. and the rod looks discolored so it means it was hot.. if that is true i wouldnt use that rod again</TD></TR></TABLE>

You can measure the rod and check for trueness, the whole discolor thing doesnt

really apply for rods. But there may be a few extreme cases, but I

havent seen any.