Stop in for a cup of coffee

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ScampMike said:
hey Karl - tell me about "correct" bolts in rocker arms shafts on small blocks will ya...?
Click to expand...

The bolts are 5/16" coarse thread grade 5.

The 'washers/spacers' are three small and two large. The small ones go in the middle of the shaft, and on the two ends... The wider washers/spacers go on the two middle....

So from one end of the shaft, it goes; short-wide-short-wide-short....

I would replace them, as I see many of them stretched from over torque. There was an error in the service manual for many years on the torque spec of 30 ft * lb, when it should be 200 - 225 in * lb... 30 ft*lb will stretch and break the bolts.

I can post pictures if you need, just let me know...


You can get a new set for $25:

Retainer and Bolt Package
 
krazykuda said:
The bolts are 5/16" coarse thread grade 5.

The 'washers/spacers' are three small and two large. The small ones go in the middle of the shaft, and on the two ends... The wider washers/spacers go on the two middle....

So from one end of the shaft, it goes; short-wide-short-wide-short....

I would replace them, as I see many of them stretched from over torque. There was an error in the service manual for many years on the torque spec of 30 ft * lb, when it should be 200 - 225 in * lb... 30 ft*lb will stretch and break the bolts.

I can post pictures if you need, just let me know...


You can get a new set for $25:

Retainer and Bolt Package
Click to expand...
yep yep - got that figured - what I am getting at is that I have read/heard that there are different bolts - two of the 10 for the rocker shafts are thinner to allow oil to run up and into the rocker shafts...
 
ScampMike said:
yep yep - got that figured - what I am getting at is that I have read/heard that there are different bolts - two of the 10 for the rocker shafts are thinner to allow oil to run up and into the rocker shafts...
Click to expand...

No, there is an oil passage in the head next to the bolt for the oiling. the bolts are all the same...
 
ScampMike said:
yep yep - got that figured - what I am getting at is that I have read/heard that there are different bolts - two of the 10 for the rocker shafts are thinner to allow oil to run up and into the rocker shafts...
Click to expand...
Forget how it works, but they do that with the back one on a slanty...
 
krazykuda said:
No, there is an oil passage in the head next to the bolt for the oiling. the bolts are all the same...
Click to expand...

Here is the hole with the oil passage for the rocker arms. No special bolts needed.

DSC06190 B.jpg


DSC06190 B2.jpg


DSC06197 B.jpg
 
I read and went with 300 inch pounds - 25 foot pounds..
krazykuda said:
No, there is an oil passage in the head next to the bolt for the oiling. the bolts are all the same...
Click to expand...
ok cool - I have had to take the upper 1/2 apart trying to diagnose an issue.. information is king.. thanks
 
ScampMike said:
seemed a little much in an aluminum head but that spec came right from Edlebrock so...
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I would be very carefull torquing to that spec... go slow and feel for it stretching and stop before you stretch the bolts too much...

Is their spec for a grade 5 or grade 8 bolt??? I would ask more questions before going that high...
 
krazykuda said:
I would be very carefull torquing to that spec... go slow and feel for it stretching and stop before you stretch the bolts too much...

Is their spec for a grade 5 or grade 8 bolt??? I would ask more questions before going that high...
Click to expand...
that's all long ago done - I was just concerned because of what I read about the shaft bolts
 
ScampMike said:
seems you survived it - how's the back?
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Back has been better, but the hard part is done. Freakin pipe was 6ft deep. I originally buried it 3 feet, then when I had my pool built, they put 3 more feet of soil over that!
 
Mopar Tim said:
Back has been better, but the hard part is done. Freakin pipe was 6ft deep. I originally buried it 3 feet, then when I had my pool built, they put 3 more feet of soil over that!
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yahoo... I am surprised as heck that you went for it - oh wait, you're a Mopar guy - gotta save the $$ for the really important things...
 
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