225 V6 Rocker Shaft Wear

Not that it matters, because I have no idea where to get a replacement, but is this too much wear on the rocker shaft? Took them apart to clean them out while I have the valve covers off.



photo 2 (3) by Troy Davis, on Flickr

 

TA performance down in AZ should be able to help you out. They had a remanufactured arm and shaft assembly to my door is less than a week.

 

Yes, too much wear. Desperately needs replaced. I'd suggest checking the other bank as well.


Sent from my iPhone

 

That's cooked. Might find a replacement from a member here with a WTB in the classifieds.

 

If the shaft looks that bad the rockers are also in need of repair/ replacement.
I may possibly have an extra shaft and some rockers.
PM me if interested.

 

Ken, sent you a PM. Thanks, Troy

 

By the way, I measured the wear on the drivers side shaft in the picture above and the nominal diameter looks like .812 and the most worn area looks like .795, so that wear shown above is about .017 deep.

Pass side rockers and shaft look MUCH better. When I crank the engine over several times, oil comes out pretty good on the pass side ... barely on the drivers side, which I am sure is what caused this. I put a coat hanger down the hole and it goes all the way down to the cam area. I tried a 3/16 rod (size of the hole in the head) and it only goes maybe 3 inches in. May try to get a 1/8 inch rod tomorrow at Home Depot and see if it will go. Any thoughts on the best way to clean this out (smallest rifle cleaning brush I have is .22) and/or diagnose why no oil coming out on drivers side? As someone said in an earlier post/reply on another of my threads, the oil comes from the same place for both and should be fed with equal pressure?

 

I found the same as you that the hole in the head does not make a good match in the block. I put several small bends in a piece of stiff tie wire and rotated it down through then blew air down and it opened it up. Mine was not completely blocked however.

 

Have you tried compressed air down the passage? If you are trying to clean out some thing that may be stuck in there try compressed air.

 

I'll try in tonight!

 

Good luck!

 

You better hope whatever debris you push back towards the cam & oil pump will come back up when you crank the motor over with out the rockers on..........might plug it up even more!

 

Dumb question - Is the oil pump what pushes the oil up through there? Or is there something on the cam?

 

All starts at the oil pump.....................from there to the rockers and back to the pan.

 

Seems like it goes through somewhere near front of the cam before it travels up those holes to the head/rockers? Or does it come straight from the oil pump to the rockers with no stops in between?

 

Unfortunately there is no good method to clean that from the top down..............should be cleaned the other direction..........that is something that most people don't pay much attention to when cleaning there motor prior to assembly. That hole is only about 3/16".

 

Can I get to it if I take oil pump off? Or do I need to pull the timing cover?

 

There is two small freeze plugs about maybe 5/8"-3/4" in diameter that is directly in front of the lifter oil galley. That's where they exit then that area is pressurized from the oil pump via another port. If you had the front cover off these plugs are just behind the timing gear..............tough deal no good advice..........just hate to see the rooting cause more problems.

 

Hmmm - really worried about this ... Really no need in getting a new rocker shaft or putting this thing back together if I can't get oil to the rockers on that side. I'm going to try the air and see what happens. Worst case, I have to take it all apart, which I guess I might have to do anyways. If I blow air in there, will it blow the oil back out of the oil pump and lose its prime?

 

Here is the problem and I speak from experience in Racing........and not to say you should treat your odd fired V6 the way we treat an engine that cost 10's of thousands of dollars.............if we loose a motor be it bearing failure or a camshaft or lifter breaking small little mi-nute pieces of metal debris can get spread throughout the motor....we obviously have screens and filters in many areas that capture & contain debris , but no matter how much containment you have some debris shows up in places that will surprise you............In our process we strip the block , then hot tank it after pulling any plugs in galleys and freeze plugs if any .........then we dry it off and use a special set of long brushes of various sizes and lengths to root out every passage followed up by high pressure air using a long nozzle to reach into tight spaces..........I may do this 2-3 times until I feel comfortable...........root, wash , blow.

Having said that if you have debris in that cavity and you blow it somewhere else how do you know whether or not you got it all out or not?
I mean the First issue sounds like there is a lack of oil volume to the overhead. The second issue is if you move the debris elsewhere how much more damage could it create in the future?...............As far as loosing its prime that's the least of your concerns at this point in time.

That's just a tough call on how far you want to reach to fix the problem. At the very least that cylinder head should come off...........and perhaps without disassembling the complete motor maybe you can pull the front cover off , pull the camshaft , pull the small plugs at the galley, place some nice clean rags in that area near the port and then root from the passage way in the block to the oil galley at the lifter adjacent to the lifter bores........Just to hard to make that call whether its worth that much trouble from where I'm standing!
Good Luck!