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Old Yesterday, 08:56 PM   #1051
Nmbr1GMfan
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Default Re: H-I-J '76 Nova re-fit.

Quote:
Originally Posted by Rich Biebel View Post
The little plug I mentioned is down in the block under the rear cap. It presses in there and closes off an oil passage. You'd still have oil pressure even with it missing.

A good shop would knock that plug out to boil the block and sometimes it never got replaced.

A high oil level in a stock depth low capacity pan is not a good idea but with a windage tray it should not have caused this.

The pickup being slightly higher than ideal is not a big deal to me either.....unless oil is trapped up top and you generally will see oil pressure fluctuations if the level was to low and pump was starving.....

Think about just how the oil in the pan is moving around in a wheelstanding car....sitting on a dyno its not under any of those forces....

Small blocks "like" to kill #5 & #6 rods more than any others.....Don't ask me why …..

I hope you find a cause and hate seeing stuff like this....but it happens unfortunately.....
I put the plug back in under the rear cap, it's there for sure.
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Old Yesterday, 08:58 PM   #1052
Nmbr1GMfan
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Default Re: H-I-J '76 Nova re-fit.

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Originally Posted by lareagle View Post
What are you running for oil filter, can't see in your pictures on dyno.
Need to be a racing filter. Have see racers have trouble with regular street filters.
Larry
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Old Yesterday, 09:02 PM   #1053
Nmbr1GMfan
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Default Re: H-I-J '76 Nova re-fit.

Square 1, we're back.
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Old Yesterday, 09:35 PM   #1054
Dissident
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Default Re: H-I-J '76 Nova re-fit.

Todd and Autumn,


Sorry to hear of your engine problems on the dyno.


Might want to check a few things in the oiling path.
A) oil pump pressure relief valve piston to bore. If it sticks open the oil is returned to the sump and kills oil flow to passages.
B) oil filter adapter bypass should be sealed off. IF open it returns oil to sump and supplies unfiltered oil to engine.
C) Plug under rear cap does the same as B) above.
Good Luck on finding the offending issues so you can continue.
D) all the above depends on a properly clearance pump and often out of the box, they are far from it. Although that is probably not the problem, good time to check it.



Hang in there!
Regards,
HB2
Dissident
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