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10-03-2021, 08:53 PM | #21 | |
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Re: rocker arm oiling problems on Y block
Quote:
!!! CAUTION - ANOTHER EDIT IN BOLD TYPE !!! The method shown supplies oil directly to the valve-train from the pump (after filtering) with no (little) chance of blockage or (loss of flow volume). It supplies oil directly to the oil passages in the cylinder head, the center cam bearing requiring no groove and will provide better camshaft support. You would perform it with the engine torn down for the reason you mentioned.
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DIAGNOSED CDO - (OCD In Correct Alphabetical Order) Last edited by KULTULZ; 10-04-2021 at 11:59 AM. Reason: CORRECTING DESCRIPTION - DUMB A$$ |
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10-04-2021, 11:39 AM | #22 |
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Re: rocker arm oiling problems on Y block
Regarding oil filters, Y blocks had a full flow system, just like today's engines. The oil came from the pump into the filter and then on to the bearings.
The older "optional" filter systems were used on various engines, such as a flathead Mopars, flathead Fords and 216-235 as well as the first 265 Chevrolets. This system basically pumped oil into the filter from an available pressure port and returned it directly to the oil pan. Better than nothing, but in all reality it just dropped the oil pressure. In that time period the oil was terrible as compared to todays oil and the engines had very poor crankcase ventilation. If I were to have been buying a new car back then, I probably would have opted out of the filter and just changed oil more often and tried to stay away from paraffin based oils |
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10-04-2021, 11:51 AM | #23 |
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Re: rocker arm oiling problems on Y block
Back in the day I have installed many outside lines to the rocker arms through a hollow bolt in the valve covers. it's not pretty but back then on high mileage engines it worked. I think there was a kit but I made up my own.
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10-04-2021, 12:58 PM | #24 | |
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Re: rocker arm oiling problems on Y block
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Bought a nice spin-on adapter to replace it. Last edited by dmsfrr; 10-04-2021 at 01:44 PM. |
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10-04-2021, 01:41 PM | #25 |
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Re: rocker arm oiling problems on Y block
The toilet paper filter was actually pretty good at its job, it would filter out finer particles than a regular filter and much cheaper. It was a common JC Whitney item back in the day.
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10-04-2021, 01:57 PM | #26 | |
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Re: rocker arm oiling problems on Y block
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The oil pressure on the engine was too low and I also preferred to go back to more original style hardware. Esp. given the picky folks that will eventually be looking under the hood. Someone can have this old filter setup for the cost of packing & shipping. |
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10-04-2021, 06:50 PM | #27 |
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Re: rocker arm oiling problems on Y block
Oil pressure - believe it or not, I took the tripple gage cluster out of my ElCamino because I converted the dash over from idiot lights to gages a couple years ago. Now I have the gages hooked up temp, tach, and I have a tube kit (copper) to hook up the oil. What should it be with a fair engine, ad at what RPM? I always heard as long as the light is not coming on it is fine, because Y-blocks are not high pressure engines.
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10-04-2021, 07:26 PM | #28 |
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Re: rocker arm oiling problems on Y block
My 292 runs at about 40 PSI warm regardless of RPM. It starts cold at 50 PSI and drops to 40 as it warms up. I use a mechanical gauge.
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10-04-2021, 07:39 PM | #29 |
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Re: rocker arm oiling problems on Y block
- charmin oil filter - Now that was good ... Better Than JOHN WAYNE TOILET TISSUE- ROUGH, TUFF AND DON'T SH!AT OFF NOBODY!
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10-04-2021, 08:27 PM | #30 |
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Re: rocker arm oiling problems on Y block
The spin on - aluminum? Where did you get it - haven't seen them for sale in quite awhile
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10-04-2021, 08:30 PM | #31 |
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Re: rocker arm oiling problems on Y block
Not only mine and I agree that the engineering was not the best.
Malcontent in North Jersey ????
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10-04-2021, 11:36 PM | #32 | |
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Re: rocker arm oiling problems on Y block
Quote:
It uses a large captive O-ring on the back side to seal against the block. I got one from him a few years earlier for the 292 in my '55. https://www.ebay.com/str/mpcustommachine . Last edited by dmsfrr; 10-05-2021 at 12:21 PM. |
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10-05-2021, 01:37 AM | #33 |
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Re: rocker arm oiling problems on Y block
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10-05-2021, 11:46 AM | #34 |
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Re: rocker arm oiling problems on Y block
To verify that, I'd say that pretty much approximates my '54 Y block's pressure readings. At a 500+ rpm idle (hot) the needle is about halfway between 0 and 25 psi...so maybe 12 or 13? At a higher idle (closer to 700) it's more like 18. Using 15w40 oil. I'm still amazed by the claims that toilet paper filters work decent, though I don't doubt it's true. TP is so easily deteriorated in water so it's weird that oil and oil pressure don't flood the system with lots of fibrous paper particles. I wonder if the high quality premium paper on today's market would be better or worse for an engine than the TP of the 1950's? |
10-11-2021, 06:41 PM | #35 |
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Re: rocker arm oiling problems on Y block
Thank you gentlemen
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10-12-2021, 10:26 AM | #36 |
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Re: rocker arm oiling problems on Y block
It's an interesting question, I drove around for years without worrying too much about it. If the OIL light isn't illuminated, must be OK, right? And that's true so far as that goes, but an otherwise good engine can be turned into more or less scrap with loss of oil pressure in just a few seconds.
The pressure specs in the manual are listed for recommended oil viscosities I expect. And from what I've gleaned from reading the material is that a high oil pressure is not necessarily "good" simply for high oil pressure sake. For example if someone were to run 20w-50 and saw 70 psi HOT at idle, that isn't really what we want. The bearing clearances are kind of what's important here, and excessively high oil pressures means the oil pump can go into bypass. If the engine is in good condition, it should achieve the specified pressure with the factory 10w-30, one of the most important functions of motor oil (other than actual lubrication) is carrying away excess engine heat away from internal engine components that aren't very well served by the engine cooling system. For that, the engine needs good oil flow, and plenty of it. I think sometimes when it comes to motor oil a lot of us try to out think the engineers. |
10-12-2021, 12:42 PM | #37 | |
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Re: rocker arm oiling problems on Y block
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DIESEL rated oil come to mind here ...
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