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-   -   H-I-J '76 Nova re-fit. (https://classracer.com/classforum/showthread.php?t=67661)

FED 387 03-21-2019 07:48 PM
Re: H-I-J '76 Nova re-fit.
 
Looking at that picture of the bad bearing one side appears to be more worn than the other side that is from left to right do all the others have the same wear pattern???

HP HUNTER 03-21-2019 08:57 PM
Re: H-I-J '76 Nova re-fit.
 
Quote:
Originally Posted by FED 387 (Post 585488)
Looking at that picture of the bad bearing one side appears to be more worn than the other side that is from left to right do all the others have the same wear pattern???
Yes, I do assume the crank was wet magged?

Nmbr1GMfan 03-21-2019 09:31 PM
Re: H-I-J '76 Nova re-fit.
 
Quote:
Originally Posted by gmonde (Post 585483)
how much trash did that produce in the oil filter ?
A lot.

Nmbr1GMfan 03-21-2019 09:43 PM
Re: H-I-J '76 Nova re-fit.
 
Quote:
Originally Posted by FED 387 (Post 585488)
Looking at that picture of the bad bearing one side appears to be more worn than the other side that is from left to right do all the others have the same wear pattern???
Of the bearings showing copper, yes. You can see in the picture, the bearings that were real bad have the same pattern, worn more on one side than the other. The other weird thing about it is, as you can see some bearings are worn and some are worn really bad (showing copper), the worn bearings are #'s 2-4-6-8, the bearings really bad (showing copper) are from 1-3-5-7.

Nmbr1GMfan 03-21-2019 09:45 PM
Re: H-I-J '76 Nova re-fit.
 
Quote:
Originally Posted by HP HUNTER (Post 585491)
Yes, I do assume the crank was wet magged?
It was not.

FED 387 03-21-2019 11:06 PM
Re: H-I-J '76 Nova re-fit.
 
Not necessarily in this order but it looks like maybe overfilling (too much oil) causing foaming or aeration --- a blocked oil passage or 2,---- a malfunctioning oil pump or pressure relief valve---- improper bearing selection or installation --- since all the bearings show some damage and those on one side more so than the other side-- also is it possible that you have the left pistons installed on the right bank and vice versa looking at the wear??? and finally crud remaining in the engine block after machining --- You'll find just have to keep on looking FED 387

HP HUNTER 03-21-2019 11:10 PM
Re: H-I-J '76 Nova re-fit.
 
Can I see a picture of the crank?

Nmbr1GMfan 03-21-2019 11:35 PM
Re: H-I-J '76 Nova re-fit.
 
Quote:
Originally Posted by HP HUNTER (Post 585504)
Can I see a picture of the crank?
This is the only one I have as it was coming apart.
https://i.imgur.com/ow5CaiT.jpg

Nmbr1GMfan 03-21-2019 11:38 PM
Re: H-I-J '76 Nova re-fit.
 
Quote:
Originally Posted by FED 387 (Post 585502)
Not necessarily in this order but it looks like maybe overfilling (too much oil) causing foaming or aeration --- a blocked oil passage or 2,---- a malfunctioning oil pump or pressure relief valve---- improper bearing selection or installation --- since all the bearings show some damage and those on one side more so than the other side-- also is it possible that you have the left pistons installed on the right bank and vice versa looking at the wear??? and finally crud remaining in the engine block after machining --- You'll find just have to keep on looking FED 387
The rods are the last to get oil, they were starved for oil.

FED 387 03-21-2019 11:49 PM
Re: H-I-J '76 Nova re-fit.
 
put it back together with new bearings put the CORRECT amount of oil in it fire it up on the dyno then after a few minutes shut it off--- pull the pan see if it has foam--- then turn it over and pop off the rod caps from 5 & 6 see if they look bad --while you are at it may as well check the others too maybe use a "regular" filter instead of that new fancy one you have see if that makes a difference---- might want to check your oil pressure from that small plug front of the engine on top of the block near the timing cover thats the last place that sees oil


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