Re: 359 Noisy Lifters
Posted by HH56 On 2023/7/3 17:33:21
One relatively easy way you could test the possibility of too much oil thru the filter as the issue would be to temporarily disconnect the filter and install a 1/4" inverted flare plug in the filter side outlet of the 4 way fitting. All oil would then be forced into the lifter gallery circuit and if things quieten, look to not having enough filter restriction.
If still noisy then look to something with the lifters, stem clearance, or maybe something blocking full flow or possibly even a plug loose or missing allowing oil to escape too easily.
On the head, only certain cast iron heads are interchanges for the aluminum 359. If someone remembers the specific heads Ross posted, please repost the info as I don't have it. Those that interchange can be used with hi octane fuel and tweaking the timing but others won't because it will be all but impossible to get rid of pinging.
Just for grins, here is an illustration showing the oiling system. Their drawing only shows the 5 mains but 9 mains are the same except there will be the additional horizontal runs to each main bearing. For anyone interested, on an unknown engine count the number of exposed 1/8" plugs on the main gallery running along the length of the engine to quickly see whether it is a 5 or 9 main engine.
Attach file:
oil path.jpg (232.50 KB)
If still noisy then look to something with the lifters, stem clearance, or maybe something blocking full flow or possibly even a plug loose or missing allowing oil to escape too easily.
On the head, only certain cast iron heads are interchanges for the aluminum 359. If someone remembers the specific heads Ross posted, please repost the info as I don't have it. Those that interchange can be used with hi octane fuel and tweaking the timing but others won't because it will be all but impossible to get rid of pinging.
Just for grins, here is an illustration showing the oiling system. Their drawing only shows the 5 mains but 9 mains are the same except there will be the additional horizontal runs to each main bearing. For anyone interested, on an unknown engine count the number of exposed 1/8" plugs on the main gallery running along the length of the engine to quickly see whether it is a 5 or 9 main engine.
Attach file:
oil path.jpg (232.50 KB)
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