HOME FORUM RULES CONTACT
     
   
   

Go Back   CLASS RACER FORUM > Class Racer Forums > Stock and Super Stock Tech
Register Photo Gallery FAQ Community Calendar

Reply
 
Thread Tools Display Modes
Old 06-29-2011, 01:03 PM   #1
bill dedman
VIP Member
 
Join Date: Feb 2002
Location: Conway, AR
Posts: 1,739
Likes: 0
Liked 6 Times in 4 Posts
Default Re: Is it feasible to metal spray a cam?

Quote:
Originally Posted by bill dedman View Post
I'll call Comp again, but the last time I talked to them they had NO rollers for the /6 motor.
That was about a year ago...

I only need .500" lift. This is a race-only app, so I am not much concerned about longivity.

I'll let you know what they say.

Thanks for the info!!!
Well, Phillip, I called Comp Cams and talked to a tech there named "Buggy."

Here's what he said: " I don't know where Phillip got a roller cam for a /6, but we don't grind one. We have NO blanks for a /6 roller motor. If you send us a blank, maybe we could grind you one, but we have no source for a roller blank for that motor."

So, maybe somebody ELSE ground that iron roller cam for you????

Curious minds want to know....
__________________
Bill

Last edited by bill dedman; 06-29-2011 at 03:25 PM.
bill dedman is offline   Reply With Quote
Old 06-29-2011, 02:33 PM   #2
Charles Rainey
Junior Member
 
Join Date: May 2011
Posts: 40
Likes: 0
Liked 0 Times in 0 Posts
Default Re: Is it feasible to metal spray a cam?

Philip/Bill
I cannot tell you if you can metal spray a cam and make it live, but I can tell you what I tried. A few years back I wanted to make my on grind, so I metal sprayed a cast cam just to try. Man I CNC "grinded" this cam and it looked awesome. Put a set of rollers on it and seemed to be ok. Well I lost control of the rpm and every thing in the engine was wearing metal spray. Bearings and pistons looked awesome. i got some picture some place but I hid them so no one would know how dumb I was. I think what happened was that I lost control of the roller lifter and it banged the shaft and just peeled the spray right off or it was the point contact of the roller. Dont know which cause I was afraid to talked to any body about it cause I was so dumb. But what I finally did was get a billet steel blank and had a guy with a lathe to make me a billet with all the knobs on it then I sent and had it ground. Might want to try that if you have some one handy on a lathe. CNC grinders make it pretty easy for people like Lunati or Comp to do that now. Was hard to do when you had to use masters
Charles Rainey is offline   Reply With Quote
Old 06-29-2011, 03:26 PM   #3
bill dedman
VIP Member
 
Join Date: Feb 2002
Location: Conway, AR
Posts: 1,739
Likes: 0
Liked 6 Times in 4 Posts
Default Re: Is it feasible to metal spray a cam?

Quote:
Originally Posted by Charles Rainey View Post
Philip/Bill
I cannot tell you if you can metal spray a cam and make it live, but I can tell you what I tried. A few years back I wanted to make my on grind, so I metal sprayed a cast cam just to try. Man I CNC "grinded" this cam and it looked awesome. Put a set of rollers on it and seemed to be ok. Well I lost control of the rpm and every thing in the engine was wearing metal spray. Bearings and pistons looked awesome. i got some picture some place but I hid them so no one would know how dumb I was. I think what happened was that I lost control of the roller lifter and it banged the shaft and just peeled the spray right off or it was the point contact of the roller. Dont know which cause I was afraid to talked to any body about it cause I was so dumb. But what I finally did was get a billet steel blank and had a guy with a lathe to make me a billet with all the knobs on it then I sent and had it ground. Might want to try that if you have some one handy on a lathe. CNC grinders make it pretty easy for people like Lunati or Comp to do that now. Was hard to do when you had to use masters
Thanks for that info. Where did you get it sprayed?
__________________
Bill
bill dedman is offline   Reply With Quote
Old 06-29-2011, 04:03 PM   #4
Philip Saran
Senior Member
 
Join Date: Oct 2006
Location: Parker, CO.
Posts: 728
Likes: 165
Liked 14 Times in 11 Posts
Default Re: Is it feasible to metal spray a cam?

Bill,

This may be a long shot, but try contacting this company,
they specialize in all things 6 cylinder.

CLIFFORD PERFORMANCE PRODUCTS INC.
22850 Sheffield Crt
Wildomar, CA 92595

1-951-471-1161 or Fax 1-951-471-0993

www.cliffordperformance.net

email for tech: Larry@cliffordperformance.net
__________________
Phil Saran
Parker, Colorado
Philip Saran is offline   Reply With Quote
Old 06-29-2011, 04:13 PM   #5
Charles Rainey
Junior Member
 
Join Date: May 2011
Posts: 40
Likes: 0
Liked 0 Times in 0 Posts
Default Re: Is it feasible to metal spray a cam?

Bill
The place that did mine is no longer in business but the best place too look is a industrial repair shop. The ones that use spray process is people that repair shafts for electric motors or conveyor repair. Many industrial repair shops use them every day. I really feel it will work if the point load contact is not too high. The process used to day is more stable than what I used then and I was really suprised how hard the surface was. Had too be ground as it was well into the Rockwell C scale. And it takes very little time to do it. You will need to have some high temp insulation to put between each journal as you spray.
charles
Charles Rainey is offline   Reply With Quote
Old 06-30-2011, 11:52 AM   #6
bill dedman
VIP Member
 
Join Date: Feb 2002
Location: Conway, AR
Posts: 1,739
Likes: 0
Liked 6 Times in 4 Posts
Default Re: Is it feasible to metal spray a cam?

I want to thank ALL you guys for all that good information. I'm not very hopeful that this is a good avenue to pursue, but I will nevertheless, pursue some of these good leads.

Thanks!!!!
__________________
Bill
bill dedman is offline   Reply With Quote
Old 06-30-2011, 09:00 PM   #7
Grant Eldridge
Member
 
Grant Eldridge's Avatar
 
Join Date: Jul 2007
Posts: 124
Likes: 0
Liked 0 Times in 0 Posts
Default Re: Is it feasible to metal spray a cam?

Bill, not sure if it applies in your motor, but on flat lifter chev BB the center of the lobe is offset a certain amount from the center of the lifter bore. That offset as well as the .002" taper of the lobe is required to make the lifters spin. Schuman in Iowa make a special lifter with a centered pointer for chev. to check this with marking compound on an installed cam. On a roller cam the lobes are apparently centered on the lifter bores so that the roller wheel is located in the center of the lobe, and the lobes are not tapered. Maybe it's not far enough off to cause problems in your application, but possibly worth checking out? I had thought about having a roller cam billet custom ground to my flat tappet stocker profile for strength but was told it would not work because of the lobes being located differently. Just what I was told.....
Grant
Grant Eldridge is offline   Reply With Quote
Old 06-29-2011, 04:28 PM   #8
Tom Goldman
VIP Member
 
Tom Goldman's Avatar
 
Join Date: Jan 2003
Location: Allentown,PA
Posts: 2,477
Likes: 892
Liked 883 Times in 237 Posts
Default Re: Is it feasible to metal spray a cam?

Bill, i'd look into grinding on a cast core.
Years ago when I first started building AMC engines ,I bought a bunch of parts from a circle track racer who was going to a BBC engine .
Amongst the parts were several cast cams that were reground into rollers.
I never had any wear issues with them and one is still in use today, 39 years later!
Lunati ground them ,and they were nitrided. Most hydraulic cams have a base circle around 1.300" , these were ground to a 1.150" base circle ,which gave plenty of meat to grind the flanks.

One note about metal spraying. I used to metal spray when I worked for General Electric.
Metal spray works very well in applications such as main bearing surfaces where the loading is constant ,and when the area to be sprayed can be undercut ,sprayed and then ground to size. Other surfaces we sprayed usually were not as durable.
__________________
Tom Goldman 1500 SG , 1506 STK

Last edited by Tom Goldman; 06-29-2011 at 04:36 PM.
Tom Goldman is offline   Reply With Quote
Old 06-29-2011, 04:50 PM   #9
Chris Hill
Senior Member
 
Join Date: Jan 2002
Posts: 655
Likes: 8
Liked 244 Times in 26 Posts
Default Re: Is it feasible to metal spray a cam?

When I was at Eaton and we wanted to do the same thing, we actually tig welded the lobes instead of spray welded then grinded on it. I'm not sure what the rod was or the cam material. This was not converting from flat tappet to rollers though.

The camshaft was an old Ducati (sp?) and parts were not available and it did run afterwards, but not in a racing enviroment.

I may be mistaken, but I'm not aware of a spray metal weld that has ever been used in an actual strenght application like a camshaft. Most time I've heard of it used is to repair seal areas on shafts or to reman a turbine shroud housing.
__________________
Chris Hill
https://ihmusedparts.com
Chris Hill is offline   Reply With Quote
Old 06-29-2011, 04:54 PM   #10
Greg Barsamian
VIP Member
 
Join Date: Jan 2002
Location: Central Massachusetts
Posts: 1,401
Likes: 725
Liked 427 Times in 97 Posts
Default Re: Is it feasible to metal spray a cam?

Associated Electro Mechanics (AEM)
185 Rowland St.
Springfield MA. 01107
(800) 288-4276
Welding, Metal Spraying, Plating and more
www.aemservices.com
e-mail: info@aemservices.com
Greg Barsamian is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:38 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.