clogged oil passage

Alright guys, so here's what I'm dealing with. I have a 67 cj5 with 225 dauntless, Ive changed out the rods and lifters because of ticking noise. Lifters were mushy and rods were bent. Once I got new Lifters in they got mushy on 1,3, and 5 cylinder, worst Lifters being at #1. So upon changing them out again (on assumption and high hopes that I recieved bad Lifters) I discovered that the oil passage to that side is clogged, I cleaned out a bunch of rtv looking crap but still is clogged. I've blown compressed air through oil filter port and as best as I could through the Lifters port, still not doing the job. I sprayed penetrating oil in it before I gave last night because its all I had at the time. Any suggestions on what to do, other than getting a new engine ( trust me, already considered it).

 

I had a similar problem on the 231 I just put in my '57'. I picked up a set of long oil galley brushes. Got them on ebay. A set of 4 came with different size brush heads. They have nylon and brass brush heads.
3 were 12" long and one is 20" long. Sprayed Purple Power degreaser into the galleys and ports and scrubbed with the brushes until clean. Then sprayed brake cleaner in all passages and blew them out with compressor. All clean, put back together with a ring kit, new cam and lifters, bearings, etc.. Runs great.

 

Yes, oil galley/gallery brushes. They are similar (identical?) to gun cleaning brushes.

I'd pull the engine to do this though. Good excuse for an overhaul. Tank the block, and reassemble with new parts of your choice.

 

Thanks for the info, but I'm not understanding how I could run any rods into the oil passages that oil the Lifters considering that not only is it down inside the Lifter bore but it takes a 90 degree turn as well. What I was thinking was blocking the oil passage on the left side therefore putting all the pressure from compressed air to the right, has anybody heard of anything like this?

 

I don't know specifically about the 225, but all oil passages (galleries) have to be machined into the block with a drill. To make a 90 degree bend, two passages must intersect, then one of the entry points is plugged. These plugs can be pressed in (like a "freeze" plug) or they can be threaded, and sealed with a hex head plug (typically).

So any passage in the block that was put there at the factory should be accessible with a long brush. Usually the factory drills a long hole from front to back of the block (the gallery) and drills in to intersect that. You likely will not be able to reach the galleries without pulling the engine, or at least removing the grille and the timing cover.

 

Yep, had to take mine down to bare block in order to reach all galleries (had to look that up). On the 231 I drilled out some of the passages to a larger size for more oil volume.

 

So turns out that the oil galley plug on that side was gone. put new plugs in, got everything back together, and now she won't start, of course right. Didn't have time to screw with timing though so im sure that's what it is, guess ill be doing that tonight, hopefully she's ready to roll. Thanks for the info guys.

 

What? If that's true then all your oil was being pumped out of the engine and onto the ground. I HOPE not but your engine could have already been damaged due to lack of oil! That might explain why it won't start.

Was the plug one of the type that was supposed to be threaded in or just pressed in like a freeze plug? Do you know if it actually fell out or just rusted away? I've never heard of an oil gallery plug coming out of an engine on it's on.

 

It's the front oil gallery plug so instead of the oil being pushed through the Lifters it was just running out on my timing chain and back to the oil pan. And its the push in kind, guess the old one that fell out drained out when I did an oil change so I don't know the condition of it.