shaft-rockers

BigBlockRanger wrote:Of all the busted stuff at Drag Week last year, the only broken rocker arms I know of were shaft rockers.

The shaft units are also the ones that get installed on the most abusive valve trains with the most aggressive cam profiles.
On them real zippy hotrods, the normal stud stuff might not survive the burnout.

maverick wrote:

BigBlockRanger wrote:Of all the busted stuff at Drag Week last year, the only broken rocker arms I know of were shaft rockers.

The shaft units are also the ones that get installed on the most abusive valve trains with the most aggressive cam profiles.
On them real zippy hotrods, the normal stud stuff might not survive the burnout.

Fabio coud use them on the prostock turd.

Fabio and Les working together on the S&W Racecars Prostock Thunderchicken?

maverick wrote:Fabio and Les working together on the S&W Racecars Prostock Thunderchicken?

The windows are done......  

I think Les has been down the track faster than Freelander though.........

richter69 wrote:I think Les has been down the track faster than Freelander though.........

but has he been 9000rpm!  

9001

9001 and a half just because Less is involved

LivermoreDave wrote:

56Tbird wrote:He looked at the one I had break when he was  at Bowling Green . He said it was flaw in the casting that caused it.They're pretty pricey to be coming apart!

Are the WW parts being discussed  a casting or billet? I thought (for what it's worth) WW's stuff started life from a billet process. Then again, what the fkkk do I know!

Dave.

They are cast Dave....

schmitty wrote:9001 and a half just because Less is involved

BIG DEAL.....................Coug's been 10,002   

more or less, Les is more.....

56Tbird wrote:

schmitty wrote:9001 and a half just because Less is involved

BIG DEAL.....................Coug's been 10,002   

at least I can keep the rods in my engines after I build one...... 

hell yeah here we go......

56Tbird wrote:

LivermoreDave wrote:

56Tbird wrote:He looked at the one I had break when he was  at Bowling Green . He said it was flaw in the casting that caused it.They're pretty pricey to be coming apart!

Are the WW parts being discussed  a casting or billet? I thought (for what it's worth) WW's stuff started life from a billet process. Then again, what the fkkk do I know!

Dave.

They are cast Dave....

Mine aren't....... 

the Coug wrote:

56Tbird wrote:

schmitty wrote:9001 and a half just because Less is involved

BIG DEAL.....................Coug's been 10,002   

at least I can keep the rods in my engines after I build one...... 

I never had one come out in the driveway   

dfree383 wrote:

56Tbird wrote:

LivermoreDave wrote:

56Tbird wrote:He looked at the one I had break when he was  at Bowling Green . He said it was flaw in the casting that caused it.They're pretty pricey to be coming apart!

Are the WW parts being discussed  a casting or billet? I thought (for what it's worth) WW's stuff started life from a billet process. Then again, what the fkkk do I know!

Dave.

They are cast Dave....

Mine aren't....... 

you are lucky ,I don't think you'll see this problem with a billet one Dave...

56Tbird wrote:

LivermoreDave wrote:

56Tbird wrote:He looked at the one I had break when he was  at Bowling Green . He said it was flaw in the casting that caused it.They're pretty pricey to be coming apart!

Are the WW parts being discussed  a casting or billet? I thought (for what it's worth) WW's stuff started life from a billet process. Then again, what the fkkk do I know!

Dave.

They are cast Dave....

Dan, You're wrong. They are all billet alum. and some such as for the B 441 IHRA Hemis are steel.

Charlie Evans

Charlie ,maybe I'm wrong ,but they look like cast....

They are billet aluminum made from an extrusion. He's never made a cast rocker in his life.  They look cast because each of his rockers are shotpeened, and that gives it a textured surface.

I was trying to help you out when I asked Jet Boat Bob if he had that broken rocker arm, I wanted to show it to Wilfred. Then Bob called you and you brought it over, where we all looked at it and studied it.  Your rocker had a partial fracture that was older and a dark gray in color, then from that old fracture there was a fresh break which was shiny and had occured at Hardinsburg the Friday of the Ford Thunder Race. I do not remember him saying it was a casting flaw,,,,, he wouldn't have said that because they are not cast.

At the Thunder Race, Bob came over, asked me to help him help you, and wanted a spare rocker. I told him there should be a new one in the Keown's trailer and he went and got it on put it on your engine.

I do not know why George has broken two rockers, but experience has taught me there is generally a cause if one looks close enough.  Things such as blown head gaskets, water leaking into a cylinder and the cylinder hydraulicing are a cause. Adjusting the valves with the pushrod "accidently" setting on the outer edge of the cup of a lifter, and then the pushrod dropping in the cup, then running the engine with more than .125" lash can cause a rocker to break, with the bigger valve spring pressures. A common cause is over torqueing the jam nut when adjusted the valves, that causes a stress riser to start from the threads and go outward through the aluminum body.

Certainly both of you guys are free to switch brands and run whatever shaft rockers you choose.

Charlie Evans

yes we can run any brand we want, but we went with these cause u said they were really good. now that I have broke 2 Im starting to wonder. I got nutten wrong inside my motor, and know how to adjust the valves and don't over torque them. As a dealer for these I would be wanting to get with my coustmers and try to fig out the problem and get with the company about this problem.

56Tbird wrote:

dfree383 wrote:

56Tbird wrote:

LivermoreDave wrote:

56Tbird wrote:He looked at the one I had break when he was  at Bowling Green . He said it was flaw in the casting that caused it.They're pretty pricey to be coming apart!

Are the WW parts being discussed  a casting or billet? I thought (for what it's worth) WW's stuff started life from a billet process. Then again, what the fkkk do I know!

Dave.

They are cast Dave....

Mine aren't....... 

you are lucky ,I don't think you'll see this problem with a billet one Dave...

Are you keeping up on checking lash and springs? Do you check you spring pressures and change the valve springs after XX runs? Have you floated them?

Kaase's run WW stuff on his PS engines and doen't seem to have unusuall issues like you do. They run a whole lot more spring, cam and RPM than you do, but they also do religious maintence to.

Now I do recall WW having a bearing issue a number of years ago, but I believe that has been taken care of.

Dave,I changed springs on my engine about 50 passes before this and checked the old ones. But in all fairness to W&W I had a low pressure oil switch go bad before this rocker failure that was shutting my ignition off at WOT that tore up a lot of other stuff which could've resulted in this. I do keep up with valve lash and have never had any issue with it.George runs the overhead on his everytime it goes out.I checked it tonight after this one gave up and the rest were in good shape as far as adjustment.

and no,it's never floated them

I know some of you guys may think im stupid or my stuff is junk or idk wut the hell im doing, but I check over everything good before every race. hell I even change the oil and it wont even have 10 passes on it. I change the springs way before they are needed. I never run any use parts on my truck. all this started out by I couldn't believe I had brokened another one and maybe get something done about it but instead some people think im stupid and don't know wut to do. if anyone has anymore comments they feel they need to say heres my number feel free to call 12709290356

79ford pickup wrote:I know some of you guys may think im stupid or my stuff is junk or idk wut the hell im doing, but I check over everything good before every race.  hell I even change the oil and it wont even have 10 passes on it. I change the springs way before they are needed. I never run any use parts on my truck.  all this started out by I couldn't believe I had brokened another one and maybe get something done about it but instead some people think im stupid and don't know wut to do. if anyone has anymore comments they feel they need to say heres my number feel free to call 12709290356    

I don't think your stupid at all. Just sometimes things get overlooked or in the heat of a moment people forget something. It has to be breaking for a reason, that reason just may not be easy to see. It may be a manufaturing flaw or it could be something your doing or you have something else wrong.