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1947 Cadillac 6269 Engine Rebuild and Repaint


6219_Rules
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I would like to get the engine rebuilt to handle some of the oil leaks and to be sure that the valves, valve guides etc. are all working well. Since the engine only has 36000 miles on it, I would expect that it would only require some adjustment, new seals, and maybe a ring job.

But I would also like to seal some of the water/coolant seepage then have the engine painted that bileous green as is proper. The main problem is that there is an oil leak in the front and one smaller one in the rear main. Any advice would be appreciated.

Can I clean up the engine and paint it in situ?

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I'm from the school of if it works don't _____ with it! shocked.gif

Have you run a compression check on the engine to see how it doing?

I don't have any experience with a motor of that vintage! Can you change the seals with it in the car, or does in need to come out?

Tell us more!

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Hi Mick,

Well let's see...the engine runs beautifully. The oil pressure stays right at 30 except when hot and then it drops to 15 on the street but not always. There is smoke but it appears whitish or slightly blue and only occasionally when I start it up or excellerate hard from a stop sign. You can smell it when it is just idling...but then that is probably due to the terrible exhaust system it has right now.

The engine leaks when it is just sitting. It looks like the larger spot is up front, and one in the rear.

I suspect rings and maybe valves but to be honest I really have no idea.

Honestly the car runs wonderfully. If anything is to be done, it is to have the exhaust system replaced. The front and rear main seals do require the engine to be pulled unless you can weasel the rope seal into place as some have suggested. Unfortunately I am unable to do that due to my disability.

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It may be a good time to run a compression check on the motor, it would at least give you a baseline for what all may need done to the motor once it is out of the car. If you can get you hands on a bore scope you could also take a peek at those combustion chambers and get an ideal if any machine work would be required on the engine.

Sounds like it could be a fun winter project! cool.gif

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It would be...except for the fact that I have no garage to do it in and no TALENT either!!! <img src="http://www.aaca.org/ubbthreads/images/graemlins/smile.gif" alt="" />

No seriously, look for the post on Dysfunctional Mechanics on the AACA or CCCA.

What I am hoping to do is sell my 1981 Chevy pickup and use the proceeds to have the engine rebuilt. That would be $3200. sigh.

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Well it sounds like it may be time to learn how to do a compression check! If you can change a spark plug and start your car you too can do a compression check! The compression check can give you some valuable insight on if the motor really does run as good as you think it does! Or if it really does need open heart surgery!

Why spend the $$ if all you need is a couple of seals.

Can someone here tell us what numbers you would be looking for when you run a compression check on a 1947 Cadi Engine??

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Hi Mick! I have several manuals so I should be able to look that up for you....check out the AACA General Forum for a post "dysfunctional Mechanics?", then you will understand why my son won't let me NEAR the spark plugs!!! <img src="http://www.aaca.org/ubbthreads/images/graemlins/smile.gif" alt="" />

How much should I pay for a compression tester? I think we tried to get one last year but the plug holes are much narrower in the old flat head, and there were no adapters available.

Personally I think it is just a matter of seals but heck what do I know about engines!! <img src="http://www.aaca.org/ubbthreads/images/graemlins/smile.gif" alt="" /> <img src="http://www.aaca.org/ubbthreads/images/graemlins/smile.gif" alt="" /> <img src="http://www.aaca.org/ubbthreads/images/graemlins/smile.gif" alt="" />

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