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Post Info TOPIC: 51 buick engine


COBOURG, ONT

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51 buick engine
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ok i finally got the 51 buick engine running and to my dismay there appears to be a knock, now im not sure what it actually is but heres the story, engine starts, no noise, knock gets louder as engine runs.  could i have crushed a bearing by unsiezing the engine with a pry bar?  should i run straight 30 oil, is 10w30 too thin for such an older engine?  i dont have coolant in the engine yet and i have only ran the motor for like 20 or 30 seconds at a time.  whats odd is theres no knock when i start it and rev it, the knock develops and get progressivley louder, im not sure if the sound is related to engine rpm.  as well the knock is not a loud hard sound but more of a rapid light sound.  any ideas folks?



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Probably, as the oil heats up and thins, the knock appears......You might try a 40 wt oil

As for what oil, does the engine have an oil filter?...Engines without oil filters used to require the SAE non detergent oil....with a filter, detergent oil. Detergent oil picks up the sludge and the filter removes it

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Got a 52 that had the same problem. Was the old bearings. They don't have a very good oiling system. Took the straight 8 out and put in a small block 350. I wanted something I could get parts for down the road and in my travels.



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Better pic...maybe



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COBOURG, ONT

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going thru some old pics from last season



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There are 106 miles to Chicago. We have a full tank of gas, half a pack of cigarettes, it's dark, and we're wearing sunglasses.



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I really like the stance you have on the car. Bags or cut coils?

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COBOURG, ONT

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bags in the rear, coils in front, to be honest my car seems to be lowering itself in the front, must be tired springs.  i have planned on bagging the front but i dont think i will yet, i use the bags to get over obstacles on the road and parking lots,i leave it slammed all the time



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TORONTO, ONT

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Try a straight 30 weight oil in it. If it still knocks, its probably a rod bearing on its way out. Those old buicks were known for that.

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