Automotive / Engine bolts

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H Monster

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Covered the tools issue pretty well, so how about the part on the receiving end. The engine bolts.

Pretty sure that when the 318 I'm working on left the factory, it did so being held together by a specific automotive type engine bolt. They are black, have a taller head profile than standard (nearly double height of a standard bolt, with cupped head, and a thick, captive flat washer. Have no clue what the grade is.

When I started pulling stuff of the 318 engine I'm working on, found all manner of bolts holding stuff on. A few of those originals, plus standard grade, grade 5, grade 8......some with washers, some without.

What I would like to do is replace them all with bolts like the originals. As far as I can tell, they don't exist in the wild. Is there a source I'm not aware of? The closest I can find is a black grade 8 flange bolt, which also has the taller head profile, but the flange is a fixed part of the head. It does not rotate like the thick flat washers do on the originals, where the rotating head presses on the now fixed in place flat washer. So a rotating flange would be grinding away on what is beneath it. Only solution I can see is to put a 2nd flat washer under the flange head.

So any source for the originals?
 
Desoto291hemi said:
Are the bolts damaged of something ?
Those old factory bolts are not torque to yield bolts
They are perfectly able to be reused
Excellent quality back then

Tommy
Click to expand...
Sounds like there is a mix of originals and standard or an unknown what is or isn't original.


Alan
 
Desoto291hemi said:
Are the bolts damaged of something ?
Those old factory bolts are not torque to yield bolts
They are perfectly able to be reused
Excellent quality back then

Tommy
Click to expand...
Yes......mostly missing. Old rusted other stuff in their place. Main one's I'm concerned about now are on the front. Timing cover and water pump.

In a pinch, might be able to go to a salvage yard and find something, but I was hoping to find a source of new that one can just order.
 
This seems like an odd place to find such a thing.........

OE Solutions Harmonic Balancer Bolt 926-885 - The Home Depot

So where are the rest of them?

The logical place to find such bolts are to have them stocked in an auto parts store. Was in NAPA the other day and they do have bulk bolt bins, with small selection of Grade 5 and 8 bolts. But my dad had 10X as many bolts in bins in his old farm shop.

Auto parts stores don't need to stock standard bolts. You can find those anywhere. What they need is to be able to match the typical sizes of bolts used in auto assemblies.

Would also be curious to hear from guys who work in large dealership shops. Some farm implement places I've been in also had a good selection of bolts in bins. Bolts, screws, cotter pins, roll pins, etc. Am wondering if large shops also have such things so a guy can finish working on stuff and not have to run out to some hardware store.
 

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