Upgraded rocker arm assemblies Anyone have these or what do you think?

[j_k_auto]

This is a complete set of remanufactured rocker arm assemblies that will work in all GM 6.2 and 6.5 diesel engines. This is an upgraded product that you will not find anywhere else. Stock units use plastic buttons to retain the rocker arms which break allowing the rocker to shift dropping the valve causing MAJOR ENGINE DAMAGE! This is one of the leading causes of top end failures in these engines. These use riveted steel retainers that WILL NOT FAIL giving you peace of mind on your expensive diesel engine.

http://img2.putfile.com/thumb/6/18011495565.jpg (http://www.putfile.com/pic.php?img=5832596)

http://img2.putfile.com/thumb/6/18011495574.jpg (http://www.putfile.com/pic.php?img=5832597)

http://img2.putfile.com/thumb/6/18011495563.jpg (http://www.putfile.com/pic.php?img=5832598)

[JeepSJ]

Make them using a roller rocker and I'd buy a set.

[john8662]

I've been running a pair of "balanced" rocker arms in my '95.

Matched a complete set of arms, then sent my shafts, and arms to these guys and had them upgrade them with their retainer setup.

Turned out really well, smoothest running 6.5 I've ever operated.

The set offered for sell are ground on the tips to remove wear on the contacting surface that contacts the valve stem.

I just went another complete route.

J

[More Power]

Stock units use plastic buttons to retain the rocker arms which break allowing the rocker to shift dropping the valve causing MAJOR ENGINE DAMAGE!

Do they all break? At what # of miles do they break? Do all 6.5 owners need to be alarmed yet again of a catastrophe waiting to happen? :eek: Do any engines run for hundreds of thousands of miles with the stock retainers and without a failure?

Tongue in cheek aside, I think they might be a pretty good idea, but the ad text goes a little too far in the "chicken little" direction, in my opinion (I'm supposing j_k_auto isn't selling them)...

Jim

PS. I really like the roller rocker idea too.. ;) PSS: I heard from a guy a while back who drilled the factory nylon retainers using a bit somewhat smaller than the pin diameter, then installed screws and washers to add add strength to the factory nylon retainers. This might be OK too.

[ronniejoe]

I agree, MP. Looking back, I should have replaced the nylon retainers when I built my new engine. Instead, I cleaned them, inspected them and installed them. They now have over 200,000 total miles on them. No failures yet. I also disagree with the statement that the retainers can cause a valve to drop...

The one area of concern with the "upgraded" ones is the potential for wear in the rocker arm where it can rub on the button. Nylon on metal likely wears better than metal on metal.

Not to completely dis these, because they do have some advantages, but I don't think the sky is falling. I've seen one instance of a broken plastic retainer in an engine that I tore down. That's it so far.

[j_k_auto]

I just looking for a " up to date solution". Kinda like if they would update this issue so there would be no reason to use these. I am just looking for a way so I never have to worry about this later down the road. looking for a permentate fix. Bolt,nylon locking nut,and washers would be my suggestion but I wonder what the downfall might be. If you gain something you will loose something. WHAT WILL I LOOSE:(

[j_k_auto]

Ok I called them. Here is the story. Owner was tired of dealing with the little plactic pos breaking. After a couple of returns warrenty issues and complete engines gone under warrenty. He must eat the cost to get it yank and fixed i guess. Hopefully you guys get the point. Anyhow he wanted something better. Well what they do is dill out the holes and put a big rivet and I guess a big washer to match. they started to make these in 1999 and never had one break of fail. 150.00 is what it costs. Also I did talk to both owner and fabricator guy both remind me of heaths.

there is the story as promised.:D

[More Power]

As mentioned earlier, I think they could be a good idea. I have heard of a couple broken nylon retainers during the past 11 years here at The Diesel Page. In one case, the pushrod was broken into several pieces before finding its (their) way into the oil pan.

The only dropped valves I've heard about were due to broken valve springs. And yes, this can munch a piston or gouge a cylinder.

For those who wish to continue using the nylon retainers, its best to replace them whenever the engine or cyl heads are rebuilt. They're inexpensive and easy to replace.... :)

Jim

[ercaduceus]

Where are these available? Do you have a web site or contact info you could pass on?

Thanks,

[j_k_auto]

here ya go
http://portlandenginerebuilders.com (http://portlandenginerebuilders.com/antique.html)

[Dimsdale]

I got them when replacing the IP. I figured that since I was in there already, I might as well put a worry to bed. Probably overkill, but I was never a fan of plastic when metal can be used. Can't imagine the weight savings were worth it. Worst part was getting the valve covers off. RTV really sticks!

They are for sale by the company or one of it's employees on Ebay for less than the company sells them.