The Stovebolt Site Forums The Shop Area Engine Shop Just changed rocker assembly on my 62 235

I just purchased a rebuilt rocker assembly and installed it. My old one had two rubber rings one on each side of the oiling collar. My rebuilt set didn't come with any rubber rings. Should these rings be there? I used the old ones. Oil is getting to both ends but I have a stream running out at the collar. Help I'm sick of tik tik tik

There were never any sealing rings on the shafts originally.
I have used 1937-39 shafts on 235's before, they have a groove on both ends of each shaft. I put a O ring on the connector end of those shafts.

I've got good oil flow to both ends of the rocker shaft now but still tik tik tik . I have changed two lifters earlier and still tik tik tik . The engine was totally rebuilt 1500 miles ago except the rocker shaft and now that done. I don't know what to do next accept buy ear plugs

If you have not read my BLOG on this subject I would suggest you start there.
When do you here the noise?

I had a problem with lifter noise in my 59 235. After reading Pre68Dave's blog I guessed it was probably air trapped in my lifters. I grooved the pushrods and the ticking went away immediately.Worth looking into.---Jack

Dave: Yes I read your Blog, and that may be the next thing I do. For the last 2 years, maybe 1 of 5 times I start it, one lifter will hammer for a few minutes until the oil pressure comes up.Is this something the trapped air can cause? I have 40 on the block and 15 at the top of the head. Lately it's getting ticy all the time,and that's when I noticed the oil flow on the rocker shaft was more in the middle and not so much on the ends. Got that solved. I was going to run it now for a while and see what it does now. What do you think?

Your problem sounds like the explanation I give at the end of my wright-up.
If it happens at start-up I would suspect a lifter plunger that is getting stuck in the body. If there are fairly new lifters the problem should go away in time as they wear in.
The one out of five times noise is because an engine does not stop at the same spot every time it shuts off(a six cylinder stops in one of three spots). If the engine stops with a sticky lifter holding a valve open, as it bleeds down from valve spring pressure, the plunger will end up being pushed to the bottom of the lifter body. As the lifter cools the plunger becomes trapped in the body. It is not until the lifter body starts to heat and expand that the plunger is released, at this point the lifter starts working properly.

That's what I was thinking at first and I was listening to the rockers with a half boom handle. Changed 2 lifters and it still did get it. I was sure I had it the last time. But any way now I'll run it and see how it does. Thanks for the input!

Is it safe to assume that all this thread is about hydraulic lifters in a car 235 engine (not the mechanical lifters found in truck 235 engines)?

In my mind you assume correct Tim.

I had no idea that all original truck engines had solid lifters

All 216 engines had mechanical/solid lifters.

All 235 engines through 1949 had mechanical lifters.

From 1950-1955 235 engines used in cars with Powerglide transmissions had hydraulic lifters (except in Corvettes).

All car 235 engines from 1956 onwards had hydraulic lifters.

All truck 235 engines had mechanical lifters.

All USA 261 engines had mechanical lifters (these were only used in trucks in the USA).

All Canadian truck 261 engines had mechanical lifters.

The Pontiac car 261 engine was only available in Canada and it had hydraulic lifters.

One unknown:
It is not clear if USA trucks with Powerglide transmission and 235 engines had mechanical or hydraulic lifters (1950/60 and later).

All 1958 and later 235 blocks and 261 blocks were drilled to allow the use of hydraulic lifters.