Camshaft regrinding: comp Ls

[@justinstatham6378]

Hey that's my Cam. JHR stands for Jamie Hackney Performance that was in Mooresville, NC. (No longer in Business). This was a custom grind cam designed by them. My car is a 2012 Camaro SS Manual the whole setup lasted 22k miles before it had lifter issues. I hope with your grind and new lifters I won't have any issues. My car only has 38k on it now and is just a fun weekend driver. Thanks Again!

[@powellmachineinc]

@@justinstatham6378 absolutely 💯

[@genechaas7369]

COOL! Never saw a cam being ground, or lobe intensity quite shown this way. THANK YOU!

[@powellmachineinc]

@@genechaas7369 our pleasure

[@timh6977]

Another great video Daniel. Most people would throw that cam in the scrap bin. Good on you for reusing. Merry Christmas to you and your Family. Tim Australia 🇦🇺

[@powellmachineinc]

@@timh6977 absolutely, ty sir!

[@Sunspot-19]

Wut, Our Sensei has a white cane?? Welcome to my world!! Good to see another episode, Danielsan!!

[@powellmachineinc]

@Sunspot-19 lol, you are welcome sir!

Once again Mr. Powell thank you for your knowledge and professionalism.

[@powellmachineinc]

Glad to do it

[@Hillbillygarage1215]

More great information, thanks Dan

[@powellmachineinc]

@@Hillbillygarage1215 very welcome

[@bdugle1]

Fascinating to see the process, great video. Thanks, Daniel!

[@powellmachineinc]

@bdugle1 absolutely, you're welcome

[@arturozarate1752]

Very interesting good stuff Daniel. In other news, I'm getting closer to completing the FE engine you ground a roller cam and we bought BAM lifters for. I hope to send dyno sheets, dyno video, and sound clips soon.

[@powellmachineinc]

@arturozarate1752 absolutely, please do!!

[@sesampley]

On the issue of surface hardness depth... Can you take a junk cam with some good lobes, check them for hadness and then grind off a few thou at a time to see just how far the treatment actually penetrates the surface? It might even be interesting to see if it differs from manufacturer to manufacturer. Love your stuff, thanks for taking the time to educate all of us!

[@powellmachineinc]

@@sesampley unfortunately it just doesn't work like that

[@davidgough1161]

very cool, love learning new things, you are a very good presenter!

[@powellmachineinc]

@@davidgough1161 we appreciate that!

[@lgun1]

I have an old Comp Cam that was ground with their XE-R type of lobes. It is very rough on valve springs and guides. That's why it's just sitting on a shelf now.

[@powellmachineinc]

@@lgun1 definitely

[@dondotterer24]

More reliable and might make more power but definitely not less Thanks for the video.

[@powellmachineinc]

@@dondotterer24 our pleasure 🙏

[@Anthony-nw5zv]

I can appreciate your knowledge.😊

[@powellmachineinc]

@@Anthony-nw5zv tyvm

[@edsmachine93]

Good afternoon Daniel. I always appreciate your thoughts and insights into the camshaft design. That was my question what was the heat treat? Because the cam looks like it could be soft. I know someone that buys into all the fast ramp cams. Says he'll make with his Comps 50hp to 75 horsepower over grinds I use. But with the being said, those grinds the springs they use wrecks the valve train! And I do not buy the aclaimed horsepower. I guess I am more conservative. I build for reliability and for the long-term. Nice work on the grind.👍 Have a great day. 👍🇺🇸👍

[@powellmachineinc]

@edsmachine93 on a optimized package, you might see 10 hp on 600hp engine, but you will have to service the VT ten times as much, so for most applications it just doesn't make sense

[@doncarlson8391]

Hi Daniel. I think I understand how the cam doctor plot corresponds to the actual location on the cam lobe but sometime can you point out on an actual cam lobe or drawing of a lobe, approximately where the areas on the plot are on the lobe? I think the horizontal line is the base circle, the radius up is the clearance ramp, the diagional up is the opening flank and the radius at the top is the transition to the nose of the lobe, diagonal moving down is the duration on the nose etc........ is that correct? Thanks for making the videos and sharing your knowledge!

[@powellmachineinc]

@doncarlson8391 definitely, what u are seeing on screen is a trace of the lift curve

[@flinch622]

Had to look up the 13041 number: LSL series. Key language? "professional drag racing profiles", "ramp quickness", "short seat timing" and "excellent area above 1/2" lift". In other words, a lobe that gets hit pretty good all the way around [and oil testing just might be a good idea]. So like alot of extreme energy series stuff, its an 'area under the curve' value which... leans towards racing, meaning an engine that will get regular inspections. Its maybe not max effort, but minimum needs a once a year teardown rain or shine?

[@powellmachineinc]

@flinch622 this is a daily driver, this lobe should not have ever been used,

[@jmflournoy386]

Merry Christmas craftsman I was thinking you had all the design data, digital lift tables for your grinds, to make your masters, well maybe you buy your masters but I'm not addressing that. If you do have you files I was suggesting just picking your grinds and the right core and inputing them into a digital grinder, eliminating the master and having to grind lobe by lobe and indexing. You get to pick the design The digital grinders do great work and there are enough around with contientous operators you do not have to buy a million dollar machine. just a thought do you have a thick rubber mat to stand on? point two Remember what Harvey Crane said about dynos and the cam business

[@powellmachineinc]

@jmflournoy386 if u have a million bucks I can borrow I will order a cnc grinder tomorrow!

[@brandonlavan2825]

I know you specialize in v8 camshafts I’m just wondering if you ever ground a 4 cylinder gm ecotec cam, for like a cobalt 2.0-2.2l. Awesome video as always!!

[@powellmachineinc]

@brandonlavan2825 we get a few requests but don't have any lobe designs for that swinging follower design

[@rowlandcrew]

What are the negatives for putting the cam in an oven and adding some surface hardening depth (nitrogen or cherry red...)? I would think a short hardening cycle could ensure .005 of minimum and uniformly incremental addition to surface hardness.

[@powellmachineinc]

@@rowlandcrew have you ever done any heat treating before?

[@rowlandcrew]

@@powellmachineinc That camshaft is too big for my oven and I would bet it would banana in an oven, but torch flame surface hardening with a terradyn is done with local surface heating, adding surface hardening material. This is how precision journal shafting is repaired and surface hardened followed by a regrind. I take it from you question that you have not seen this done.

[@timothybayliss6680]

If you full depth harden a camshaft it usually makes it too brittle. This cam was probably made from 5150 and comp induction hardens thier hydraulic roller billet cores. If you get something serious, comp has 8620 cores available and those are carburized. Its 4+ hours in a controlled atmosphere oven. You arent just running a torch over it. You dont need a 005 minimum either, its way more than that.

[@paulshurmon138]

Thanks for the video.

[@powellmachineinc]

@@paulshurmon138 very welcome 🙏

[@hansnordstrom2373]

Is the cam master something you buy or design copying made in house ?

[@powellmachineinc]

@@hansnordstrom2373 we make the blank plate and have a company cnc grind our design onto it.

[@DanielSmith-yp7mw]

Is that one of Comp's xtreme energy cams? I know they're supposedly aggressive on the opening and closing to help with idle quality and vacuum on higher duration designs. At least that's how I understand their description of that line of cams. Good info Daniel. 👍

[@powellmachineinc]

@DanielSmith-yp7mw it's a LSL lobe on the int, glad u enjoyed!

[@DanielSmith-yp7mw]

@powellmachineinc ok, gotcha. I know Comp is pretty good about cam recommendations if you call them and probably would steer someone away from a cam like that for street driving. Thanks for the info!

[@strokermaverick]

Very interesting, indeed! Im, no expert. After your explanation, don't know why an "expert" would design a hydraulic roller like that.

[@powellmachineinc]

@@strokermaverick probably they just didn't know any better.

[@gk5891]

Nothing ever changes. I remember Weird Harold trying to talk guys into using lobes designed for Endurance Racing instead of Drag Racing decades ago.

[@keith6872]

Give us an update on the other cam grinder Is it in service.

[@powellmachineinc]

@keith6872 yes, grinding on it every day, I will try to get a video out soon

[@litonyayo1666]

so this regrind dosnt affect the pushrod length?

[@andybarker5312]

10 thousand should be able to be compensated with rocker adjustment that and changing to a 1:65 rocker bring you back into original lift spec

[@powellmachineinc]

@litonyayo1666 we moved the bc .010, most people are running WAY more preload than required so should go right back in with no issue's

[@hydrocarbon82]

Dang, nearly .700" lift for a daily driver LS? I've got a Comp that got nicked by some rod shards, I'd love to turn it into something like a .600"-lift Truck Norris cam.

[@powellmachineinc]

@@hydrocarbon82. 365 lobe is only ..620 at the valve

[@andybarker5312]

I had the same problem with NASCAR modified spec motor

[@powellmachineinc]

@@andybarker5312 hopefully u got it sorted

[@craigbowers4047]

Private equity has never made anything better. Comp Edelbrock will be owned by the chinese before its over.

[@patrickwendling6759]

Thank you for your knowledge and videos USA 🇺🇸 TRUMP MAGA

[@powellmachineinc]

@@patrickwendling6759 glad to do it!

[@thegdfp6447]

Bottom of the page cam for a middle of the road application...

[@powellmachineinc]

@@thegdfp6447 lol