1951 Pontiac Chieftain

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PhilA
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Re: 1951 Pontiac Chieftain

Post by PhilA » Fri Sep 13, 2019 12:34 am

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Bracket mostly complete. Requires one more bolt putting through on the rear alternator bracket and a couple nylocs.
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It tightens up straight and holds nicely.

Phil
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Re: 1951 Pontiac Chieftain

Post by Junkman » Fri Sep 13, 2019 1:33 am

Yeah, but twelve Volts suck.
The Circus is over, the Clown remains.
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Re: 1951 Pontiac Chieftain

Post by PhilA » Fri Sep 13, 2019 1:49 am

Not for keeping the Watts up and the Amps down.
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Re: 1951 Pontiac Chieftain

Post by Junkman » Fri Sep 13, 2019 1:55 am

I prefer André-Marie Ampère to James Watt any day of the week.
Watt. What a bloody phony.
The Circus is over, the Clown remains.
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Re: 1951 Pontiac Chieftain

Post by PhilA » Sat Sep 14, 2019 1:52 am

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Bolted all the bits on. Got the timing set well enough.

Alternator puts out, which is nice. At idle I went from 12.4V to 13.3, which went up to nearly 14V when revved. Belt doesn't squeal either.

Calling that success
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Re: 1951 Pontiac Chieftain

Post by PhilA » Tue Sep 17, 2019 12:57 am

Ordered oil pump. NOS, ordered a modern front oil seal to put on because modern ATF.
Couple thrust washers because the clearance is kinda between the two. Can always pop it open on the next big service and then I'll have one to take up the slack.

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Re: 1951 Pontiac Chieftain

Post by PhilA » Wed Sep 18, 2019 2:12 am

Question: Will a Pontiac straight eight run if the timing is 45 degrees advanced?

Answer: Yes
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Painted up the timing marks because someone had just thrown paint on in approximately the correct place on the pulley.

https://youtu.be/Zn8nqdmd240

With the timing set to 6° BTDC it idles well and revs freely. Funny, that.

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Re: 1951 Pontiac Chieftain

Post by PhilA » Thu Sep 19, 2019 10:24 pm

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Brand new, old stock 1951 Hydra-Matic front oil pump.

Mmmm.



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Re: 1951 Pontiac Chieftain

Post by PhilA » Fri Sep 20, 2019 3:29 am

My initial suspicion was correct. A bearing wasn't sat fully. That beating? Oil pump. However, my method to attempt to remedy that was flawed, leading to busting the flange on the oil pump.

However, I think the flange wasn't straight anyhow looking at the way it sat in the case compared to the new one.

New pump gone in, factory spec- now with a 66 thou think spacing washer I have 35 thou of lash, so need to tighten that up about 30 thou.
Closest washer is 26 thou which would leave me at 11 thou lash which is within tolerance.

Ordering washer tomorrow

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Re: 1951 Pontiac Chieftain

Post by PhilA » Sun Sep 22, 2019 2:18 am

Bought 2 gallons of 30 weight engine oil and 12 quarts of ATF.

Antifreeze notwithstanding (gonna run water to flush it through initially) that's the fluids done.

Phil
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