Stamped rockers?

art leong · 09-26-2011, 10:21 PM

Have any of you that have used stamped rocker arms. Had them wipeout on the valve tip side?
What are the causes (other than lack of oil) ?
I'm using a cam that is much bigger than a stock cam. And I destroyed 12 out of 16 rockers

Jim Wahl · 09-27-2011, 12:51 AM

Artie, is this the problem you were chasing? Jim

.

BlueOval Ralph · 09-27-2011, 08:37 AM

Art First off find the post I put on here about the blends of Mobil One the new oils don't not have enough of additives for flat tappet cams and followers. If you lookat the Mobil web site you will find their blends with the extra additives. Look at. The Porsche special blends they have the extra, Porsche is one if the few that still use directing acting followers (no roller finger followers). My first guess is that you lave a lube issue could have started at break in
mobil.com/USA-English /motoroil/files/mobil_1_productguide

Quote:

Originally Posted by art leong

Have any of you that have used stamped rocker arms. Had them wipeout on the valve tip side?
What are the causes (other than lack of oil) ?
I'm using a cam that is much bigger than a stock cam. And I destroyed 12 out of 16 rockers

Terry Cain · 09-27-2011, 08:52 AM

Quote:

Originally Posted by art leong

Have any of you that have used stamped rocker arms. Had them wipeout on the valve tip side?
What are the causes (other than lack of oil) ?
I'm using a cam that is much bigger than a stock cam. And I destroyed 12 out of 16 rockers

Yes, I have. Come to find out it was the rockers. They were suppose to be the "all high mighty nitro" rocker which (no names) one of the cam manufactures sells. Chinese steel junk.
I found a set of OEM and did hardness testing against the Chinese rockers. WORLD of difference. I suggest checking hardness. Should be at least 40-45 on rockwell C scale.

art leong · 09-27-2011, 04:50 PM

here is a picture of my rockers. The one on the left is a good one the one on the right is wiped out.

James Perrone · 09-27-2011, 05:46 PM

Art
Since I have had my rockers treated by Jim Baileys.company
Have not broke any with my sb in 2 years.Great investment at a great price..
And they still look awsome..Good luck

Tom Turner · 09-27-2011, 08:09 PM

Jim Bailey's Company is called?? Website? Phone #?

art leong · 09-27-2011, 08:50 PM

Quote:

Originally Posted by James Perrone

Art
Since I have had my rockers treated by Jim Baileys.company
Have not broke any with my sb in 2 years.Great investment at a great price..
And they still look awsome..Good luck

Thanks for that. I'll call him tomorrow

Quote:

Originally Posted by Tom Turner

Jim Bailey's Company is called?? Website? Phone #?

http://www.finishedracing.com/

Adger Smith · 09-27-2011, 09:32 PM

Art,
Just a guess here, but the new bigger cam had a smaller base circle/root diameter and it moved the lifter pivot point and the valve end lost it's rolling couple. It started sliding across the valve instead of making a roll across as it lifted. I would venture to guess your rockers on the bigger lift lobe had the most wear.. In the past I did a lot of the 2300 Ford ohc 4 cylinders and if you didn't get the rocker set up right it would do bad things to the valve gear as well as not run very well. Put that other head together with the older/smaller cams. Sorry I missed your call this afternoon. I'll try to get you in the morning.

09-26-2011, 10:21 PM	#1
art leong VIP Member Join Date: Dec 2001 Location: Richmond Hill, Georgia Posts: 2,003 Likes: 0 Liked 1 Time in 1 Post	Stamped rockers? Have any of you that have used stamped rocker arms. Had them wipeout on the valve tip side? What are the causes (other than lack of oil) ? I'm using a cam that is much bigger than a stock cam. And I destroyed 12 out of 16 rockers __________________ Art Leong 2095 SS Last edited by art leong; 09-26-2011 at 10:25 PM.

09-27-2011, 12:51 AM	#2
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,844 Likes: 666 Liked 683 Times in 129 Posts	Re: Stamped rockers? Artie, is this the problem you were chasing? Jim . __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association.

09-27-2011, 04:50 PM	#5
art leong VIP Member Join Date: Dec 2001 Location: Richmond Hill, Georgia Posts: 2,003 Likes: 0 Liked 1 Time in 1 Post	Re: Stamped rockers? here is a picture of my rockers. The one on the left is a good one the one on the right is wiped out. __________________ Art Leong 2095 SS

09-27-2011, 05:46 PM	#6
James Perrone VIP Member Join Date: Feb 2004 Location: LONG ISLAND N.Y. Posts: 1,673 Likes: 3,363 Liked 1,805 Times in 423 Posts	Re: Stamped rockers? Art Since I have had my rockers treated by Jim Baileys.company Have not broke any with my sb in 2 years.Great investment at a great price.. And they still look awsome..Good luck __________________ james perrone 1290 STK

09-27-2011, 08:09 PM	#7
Tom Turner Member Join Date: Jan 2005 Location: Lake Tapps, Washington Posts: 137 Likes: 0 Liked 0 Times in 0 Posts	Re: Stamped rockers? Jim Bailey's Company is called?? Website? Phone #?

09-27-2011, 09:32 PM	#9
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Stamped rockers? Art, Just a guess here, but the new bigger cam had a smaller base circle/root diameter and it moved the lifter pivot point and the valve end lost it's rolling couple. It started sliding across the valve instead of making a roll across as it lifted. I would venture to guess your rockers on the bigger lift lobe had the most wear.. In the past I did a lot of the 2300 Ford ohc 4 cylinders and if you didn't get the rocker set up right it would do bad things to the valve gear as well as not run very well. Put that other head together with the older/smaller cams. Sorry I missed your call this afternoon. I'll try to get you in the morning. __________________ Adger Smith (Former SS)