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Another setback, rocker arm failure

tarafied1

Well-Known Member
First, I can't post pics because Sunday night a tree fell across the road from all the heavy rain. In the process of trying to move it so we could get up to our house the part I was pulling on broke and I fell into the ditch full of about three feet of water. My phone was in back my pocket. Not only did it get soaked but I smashed the heck out of it.
So anyway, back to the point. One day last week I was continuing my shake down running of the 67. Some of you may have already seen the post. Well, It didn't like sitting in traffic. The trans got hot again and so did the engine but with the stock temp gauge I couldn't tell how hot actually. But anyway it started running funny. I figured it was from the fuel boiling the carb or some other issue like that but it never settled down. I check the plugs and pulled the carb off and all checked it. Started checking ignition too. Well I didn't find anything. I did notice the valves sounded a little clatter like. I hadn't rechecked the valve lash since the cam swap so I thought I would do that and tighten them up. Well I found a couple rocker arms that were not centered and one looks like it is toast. They are Comp Cams Magnum roller rockers. I think they are all junk but at least one was pretty bad.
I can't win!!!
 
Crap Craig, that all sucks.

Sounds like I bad day all around.

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You might have to be in one of those "Plan C" Hondas on the power tour this year. :( I know you get it all worked out.

Keep your chin up and we will give you our moral support (since we cannot be there to help you).

PS. Notice, I still do not have my Mustang running as a driver. I have electrical gremlins.
 
Crap Craig, that all sucks.

Sounds like I bad day all around.

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Yeah, it was. I got the car home and it runs "okay" but it was not right. Two rockers were off the center of the valves on drivers side and one on passenger side #1 cylinder. It was way off. I pulled it off and it's definitely shot. I hope no damage to the valve themselves!
 
You might have to be in one of those "Plan C" Hondas on the power tour this year. :( I know you get it all worked out.

Keep your chin up and we will give you our moral support (since we cannot be there to help you).

PS. Notice, I still do not have my Mustang running as a driver. I have electrical gremlins.
Thanks John! Good Luck with yours.
I am taking plan B. No Honda though. Talked it over with the wife and kids. We are taking the 72 Chevy. It gets 8 mpg empty or loaded, uses almost as much oil and has maybe as much power as my son's Bobcat but it doesn't mind driving in traffic! Plus we can put the eazy up and chairs and all kinds of stuff in it that wouldn't fit in the Mustang.
 
Are you running guide plates?
yes, I have Edelbrock RPM heads. The guideplates are pre-installed and hardened. I'm running Comp Cams 8.680" 3/8" push rods (about .130" longer than stock). Recommended length by Eddy. Installed height is 1.975" and the rockers are 1.72 ratio.
Looks like the seat area for the "ball" is failing or gaulled. This might be causing the rockers to not seat level. I wish I could show pics!
 
I had the same issue with my Comp Cams roller rockers. They forced me to re grind my cam and I only had about 500 miles on them. Owned them for just longer than the warranty but they said it wasn't a part failure. I actually had a number of the shafts start backing their way out. I had 3 or 4 others that we doing the same thing but had not failed yet. Will never buy CC roller lifters again. It ended up costing me about $1500 to pull the engine apart, fix the problem and add new bearing for safety sake.


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I've said this before...Ditch the std roller rockers and put in shaft rollers. You will not have a problem with them getting sideways ever again. I went through what's happening to you on two different rebuilds. Once I changed them, no mo problems.
 
Yah, I think that's dead.

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Itll be Ok. The young bloke repairs phones for a living and he would have that screen off and a new one on in 15 minutes. If the water has rooted it, all the photos etc can still be retrieved if you dont backup to the cloud.
Im sure you have those phone repair stands in the shopping centres in the USA. Stay away from them and find your local phone nerd, or bring it with you to OZ and Ashley will fix it for you.
Unless its still under warranty, then take it to an Apple store, but back it up first. (They will either wipe it or replace it with a used phone if its buggered internally)
 
Itll be Ok. The young bloke repairs phones for a living and he would have that screen off and a new one on in 15 minutes. If the water has rooted it, all the photos etc can still be retrieved if you dont backup to the cloud.
Im sure you have those phone repair stands in the shopping centres in the USA. Stay away from them and find your local phone nerd, or bring it with you to OZ and Ashley will fix it for you.
Unless its still under warranty, then take it to an Apple store, but back it up first. (They will either wipe it or replace it with a used phone if its buggered internally)
It looks like it's bent right above the apple logo.
 
It looks like it's bent right above the apple logo.
yep, the damage is more from whatever pushed the back of the phone thru to the front!

I've said this before...Ditch the std roller rockers and put in shaft rollers. You will not have a problem with them getting sideways ever again. I went through what's happening to you on two different rebuilds. Once I changed them, no mo problems.
That's the plan. I am going to replace the guide plates, push rods and get some good shaft type roller rockers. I'm not sure if the guide plates are to blame or the rockers but I don't want to risk it.
 
I had the same issue with my Comp Cams roller rockers. They forced me to re grind my cam and I only had about 500 miles on them. Owned them for just longer than the warranty but they said it wasn't a part failure. I actually had a number of the shafts start backing their way out. I had 3 or 4 others that we doing the same thing but had not failed yet. Will never buy CC roller lifters again. It ended up costing me about $1500 to pull the engine apart, fix the problem and add new bearing for safety sake.


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I pulled the intake to look at the cam. I'll pull all the rockers off and pull out the lifters to visually inspect them. I hope the cam is okay.
 
I had to pull my cam to get out the lifters. The pins slid out so much I couldn't remove the otherwise. Hopefully yours isn't that bad.


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I had to pull my cam to get out the lifters. The pins slid out so much I couldn't remove the otherwise. Hopefully yours isn't that bad.


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ahh, roller lifters! I see. I don't have roller lifters. Still a flat tappet cam. I do have the magnum roller rockers which are basically stock type with roller tips. The ball fulcrums look like they are prematurely wearing. I'm not sure if that is why they are not centered on the valve tip or if the Edelbrock guide plates are just crap. I'm just going to replace all of it. Push rods might be okay but while I'm at I will just get new ones too. I will check before I buy push rods to see if length is good. Edelbrock recommended the length I bought but I have been reading up on valve train geometry and big block Fords canted valves can be tricky to get right. Some recomend longer push rods on the exhaust valves on 429/460's.
 
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