Cam shaft sprocket bolts

[sujitroy]

Would it be wise to get grade 8 bolts here or is this overkill?
Sujit

[richardthestag]

Zinc plated 8.8 grade bolts of this size are 14p + VAT and shipping from my usual supplier.

Why would you not?

[jbuckl]

The ones I used were black & 10.9 grade.
Imho this interface is slightly under clamped with standard 5.5 or 8.8, as they are only 1-4”. Just my 2p though

[flying farmer]

The ones I used were black & 10.9 grade.
Imho this interface is slightly under clamped with standard 5.5 or 8.8, as they are only 1-4”. Just my 2p though

I once had a cam sprocket come loose due to the bolts stretching (lock tabs were in place). I would have to agree a better grade of bolt is a very good idea, I have been supplied with some that were too short and very soft from one of the major suppliers (can't remember which one)

[jbuckl]

Have seen nyloc nuts added before now.
However it’s a drafted cast surface, so not a great addition. Somewhat fiddly to fit due to having to turn to get access too.
Probably done during a time when new lock plates were unavailable.

[richardthestag]

Have seen nyloc nuts added before now.
However it’s a drafted cast surface, so not a great addition. Somewhat fiddly to fit due to having to turn to get access too.
Probably done during a time when new lock plates were unavailable.

astonishing bodgery, I have seen nylocs on exhaust manifolds and turbo installations

The best cackhanded bodge that I have seen recently came from a so called Land Rover Specialist

20220425_135838.jpg

I only removed the engine because gearbox oil was draining out of the bellhousing, that was because the tiny 1/4" bolts that held the gearbox pump cover on were all loose.

I dread to think of the chaos when those nylocs fatigued and allowed the clutchcover to come free

[jbuckl]

Only being used as spacers… what’s not to like?

Laziness in a photo?
Specialists in action