Deburring and Polishing Engine Parts
 

Timing gear before: notice all the burrs and laid over metal

http://i1377.photobucket.com/albums/...pshrrhjlxf.jpg

After: Just a quick buff with black emery jewelers rogue and a spiral wheel on buffer


http://i1377.photobucket.com/albums/...psklfzeu5j.jpg

Flame on or discuss ....polishing cam lobes to remove ferrite burrs

Before:

http://i1377.photobucket.com/albums/...psj3u8iruf.jpg


After:

http://i1377.photobucket.com/albums/...psctjahdqu.jpg

I can't say I've seen the gear polished, but I had to pull my cam and have it polished because it made a horrible noise when I first installed it and I was worried about how it was making the lifters vibrate. Sounded like I had a blower when I didn't :)

This is a loud video, but it was taken after trying to make sure it wasn't something in the intake tract making the whirring noise.

Did the cam look like the journal I polished?

I don't believe it had a mirror finish on it but it definitely wasn't dull. Been a little while since Cam Motion did it for me sorry.

I also want to clarify and say that it wasn't a Cam Motion cam that they fixed.

Well I have sent everything in my motor to be cryo'd and Micronite polished and it looks nice. I can't tell you if it helps, but it didn't hurt lol. Its relatively cheap to do and I like it so building two motors that I'm doing it to all the internals again. Crank, Rods, Cam,Wristpins, Valve springs Push rods, timing gears.

I'm coating a bunch of stuff in the engine as well...

I know in the second pic of the timing gear it looks to be polished smooth but in reality the machines grooves are there. I took a .003" feeler gauge and dragged it across the tip and you can feel/hear it catching on each one. It basically just deburred it... REM polishing, cyro etc etc actually make it much smoother and more uniform than my buffing wheel could ever do.

Some more messing up perfectly good parts:

Polishing the rollers on the lifters

http://i1377.photobucket.com/albums/...ps3qsim7qo.jpg

Saving weight

http://i1377.photobucket.com/albums/...psiaz7shzs.jpg

Valves and valves tips

http://i1377.photobucket.com/albums/...psk0zxylgh.jpg

Roller chain

http://i1377.photobucket.com/albums/...pscehab3oc.jpg


Cylinder head before breaking hard edges:

http://i1377.photobucket.com/albums/...pspg7klepm.jpg

Cylinder head after breaking hard edges

http://i1377.photobucket.com/albums/...psike2bslv.jpg

Man lots of work! those LS7 heads? your taking off the factory pedestals? What you going to install? Looking good though that's a lot of work LOL!

They're LS3 heads...the factory valvespring seats had a beveled edge that only allowed for a 1.250" diameter seat so I used a seat cutter to remove the beveled edge and allow for a 1.340" seat and shim. Now the installed heights are much closer together. The measurements on the head are prior to cutting.

Ok carry on lol! looks good though.

Since not everyone likes polished stuff I sandblasted the oil pump housing, cover, and gears...only thing is they don't turn so well now

Attachment 48126872

Attachment 48126873


Attachment 48126874

Hmmm well maybe not the best idea.

Haha I'm coating all of it with Cerakote mirco slick

I've heard of the cerakote heat barrier but not the micro slick

is this a diy coating?

Ok. Lets see how it comes out.

Yeppers you can have it "professionally" or do it yourself...the pistons and combustion chambers will get the Cerakote piston top coat (thermal barrier) Basically any other part is getting the mircoslick treatment. The blasting only etches the surface any and all marks in place prior to blasting are still there afterwards. So I'm polishing the surfaces to a mirror finish and then blasting/coating them. The backside of front/rear covers, valley area, block skirt, heads etc are getting mirco slicked for faster oil drainback.

This stuff is definitely slick (brand new Melling 10296 after blasting and coating)

Attachment 48126784

This is the pressure relief valve for the oil pump. I left it in on purpose while sandblasting and applying the Cerakote mirco slick so the port it slides in wouldn't be affected. Anywho a small spot got blasted and coated on the valve since I left it in so I removed it and polished it. (I was going to polish it anyways as these valves have been known to be "sticky") The micro slick isn't fully cured yet so I thought it would polish off within a 1-3 seconds....WRONG the stuff is so slick the buffing compound and wheel can't even catch on it to remove it and I purposely tried removing it!!! The professionally applied DLC (Diamond Like Coating) on my roller lifters buffs off within 2-3 seconds without even trying!!!!

Attachment 48126785

Figured why not

Attachment 48126624

Attachment 48125673



http://i1377.photobucket.com/albums/...pso9kf66vd.jpg