Camshaft lob damage

[Puffwagon]

Just get a second hand inlet cam and chuck it in. Job done. 

 

You could replace both cams with new items but that cost a fair bit more than a second hand cam.

 

There is nothing that is mandatory to replace but I would change the oil and filter.

 

Don't worry about followers as they are more likely to match the valve stems than the camshaft. I would inspect them all for flat spots and scoring on the roller and replace them as necessary. Check the part that touches the valve stem and make sure that isn't stuffed. Check the tops of the valve stems for wear and pitting.

 

You could go further and measure the lifter bores and camshaft journals but it depends how far you want to go with it. You might find that the head isn't within service limits and needs chucking.

 

Fixing cars can be like opening a can of worms at times and you can end up replacing a lot more than you set out to which leads us back to my first sentence.

 

1 hour ago, crazyxa said:

Also do people think the cause is just poor manufacturer?

 

I pulled a cam out of my fully hectic vn 5.0 after 300xxxkm and it wasn't anywhere near that farked. Make of that what you will.

[JETURBO]

Fully synthetic strikes again 

[arronm]

Maximum shear stresses are below the surface.  How does a fully synthetic oil affect this??

I am all ears Jet.  

Edited 25/02/18 04:25 AM by arronm

[crazyxa]

Might be a silly question but is there a special 10mm socket for the sprocket bolt?

 

[Puffwagon]

That isn't a silly question. I believe the "socket" is called an "E Torx" bit.

[crazyxa]

Thanks never seen it before. Cheers.

[Puffwagon]

Me neither mate. I had to google it 

[crazyxa]

Hey guys I’m about to install my new genuine inlet cam and new follower and lash adjuster.

 

I have coated it all up in my engine oil Nulon 10w 40 Synthetic. Is this ok? Or does an OHC roller follower cam need assembly lube on the cam loves?

 

Also on first start up do I need to bed it in via running at 2000rpm ish for 15 mins.

[Puffwagon]

There is nothing in the manual that mentions running in and it recommends oil for fitting.

 

My thoughts are;

 

You are using a roller follower that doesn't scrape the camshaft so you don't need to do the high oil pressure run in that a flat tappet cam needs.

 

Oil will be fine on the lobes for the same reason but obviously assembly lube in the lobes won't hurt it.

[crazyxa]

Thanks. I do have the manual however I guess I am being extra careful. I have been looking at the crow cams website and it stipulates their cam assembly lube is required for flat tappet cams. Anything with a roller is engine oil.