Visit The Dirt Forum for More Information

Author Topic:   claimer cams, good or bad?
m33mcg
Dirt Forum Racer

Total posts: 96
posted December 06, 2004 07:32 PM  
Would like some feed back reguarding these "claimer cams" that JR and midwest are selling. Has anyone used these cams and had them go flat. I had an engine builder tell me that he has had little luck with them. He thought they might be soft after all they only cost around 60.00

Thanks, Mike

iowatoolman
Dirt Freak

Total posts: 369
posted December 06, 2004 08:47 PM  
what kind of cam are you looking for i have a flat tappet cam that is new if your interested pm me

oh yes it is new

drive hard or drive home

m33mcg
Dirt Forum Racer

Total posts: 96
posted December 07, 2004 05:21 AM  
yes flat tappet.

ford5
Dirt Forum Champ
Total posts: 711
posted December 07, 2004 05:37 AM  
I was doing some research on the reasons alot of cams go flat almost instantly these days.
Turns out that it may be do to the oil that is used during breakin.
Apparently, due to new government standards and requirements, that the 'zinc' has been removed from over-the-counter type oils fairly recently.
This causes the cam to suffer during the breakin period.
On another message board I read that the best breakin oil to use was Shell Rotella diesel oil, as it still retained the zinc.
(I think that was written by Steve or Bill Hendrens?)

NJantz
Dirt Forum Champ
Total posts: 755
posted December 07, 2004 07:24 AM  
I've read the same thing ford5 posted.

We had a claimer cam in one of ours and never had any issue.

chomme
Dirt Freak

Total posts: 300
posted December 07, 2004 07:33 AM  
Heck i use a paw cam..44.95....then after the nail biting break in period....it's hammer down lol

[This message has been edited by rico 08 (edited December 07, 2004).]

ss99
Dirt Maniac

Total posts: 120
posted December 07, 2004 09:52 AM  
The speedway cams are cheap also. I used one last year in a pinch and turned better times that I had been with our Isky. I know what we'll be running next year!

ss99

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted December 07, 2004 10:26 AM  
On the oil issue mentioned above. The way I understood it the zinc acts almost like moly lube does during breakin. The zinc provides a cushion and prevents metal to metal contact. Valvoline VR1 racing oil has high levels of zinc in it if that is any indication.

I think castrol stil has some zinc in it but most if not all, off the shelf oils have hardly any if any at all.

[This message has been edited by dirtbuster (edited December 07, 2004).]

waltonjr1
Dirt Forum Champ
Total posts: 516
posted December 07, 2004 10:30 AM  
I have 6 races on a Jr 187 hyd ground by speed pro, so far so good. Its suppose to be a popular cam up north, thats what axle told me anyway. I have it in a JR 408, awesome torque. Its like night and day from my 358. Im probaly the only person at the track (way down south) running an Iowa motor.

[This message has been edited by waltonjr1 (edited December 07, 2004).]

stockcar5
Dirt Forum Champ
Total posts: 578
posted December 07, 2004 10:48 AM  
GMs eos (engine oil supplement) has a ton of zinc in it also.

------------------
www.geocities.com/dirtstockcar5

m33mcg
Dirt Forum Racer

Total posts: 96
posted December 07, 2004 08:12 PM  
can too much spring pressure cause a cam to go flat?

waltonjr1
Dirt Forum Champ
Total posts: 516
posted December 08, 2004 04:28 AM  
Yes

andykmod
Dirt Freak

Total posts: 351
posted December 08, 2004 02:55 PM  
I run midwestmotorsports cams in my mod and found one i like really well, I have bought 3 of them all in 355's and never had a problem. I have had a few Howards cams loose lobes on break-in and will never buy a Howards cam again.

stockcar5
Dirt Forum Champ
Total posts: 578
posted December 08, 2004 03:46 PM  
it probably wasnt the cam. it was a lifter problem.

------------------
www.geocities.com/dirtstockcar5

speedy46
Dirt Maniac

Total posts: 165
posted December 08, 2004 04:19 PM  
i had a JR #7 cam in my motor i took it out this winter and it looked almost brand new

m33mcg
Dirt Forum Racer

Total posts: 96
posted December 08, 2004 07:02 PM  
Thanks for all the input and because most of the feedback was positive I ordered a midwest # 9 today. Once again thanks, Mike

Back to the Archives