1951 Pontiac Chieftain

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Junkman
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Re: 1951 Pontiac Chieftain

Post by Junkman » Fri Aug 16, 2019 10:14 am

Running surface of the clutch okay?
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Re: 1951 Pontiac Chieftain

Post by PhilA » Sat Aug 17, 2019 1:33 am

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My version of GM Special Tool J-4670.
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Air applied
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Piston removed.

I ordered the spares today. They should be in middle of next week. Ordered a full set of new bearings, because the ones that aren't scrap are worn.

Phil
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Re: 1951 Pontiac Chieftain

Post by PhilA » Sat Aug 17, 2019 2:44 am

Junkman wrote:
Fri Aug 16, 2019 10:14 am
Running surface of the clutch okay?
Showed the guy at the transmission place. He said it's a bit scuffed but not unusable.
I'm going to carefully pick the bits of steel swarf out of the alloy; the steel drum it presses into is in good shape.

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Re: 1951 Pontiac Chieftain

Post by PhilA » Sat Aug 17, 2019 2:47 am

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Late grandfather in law's small cold chisel. Not in particularly great shape.
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Sharpened (a little too shallow but I followed the angle that was on it) and the end dressed. That'll be good for bearing removal now.

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Re: 1951 Pontiac Chieftain

Post by PhilA » Sat Aug 17, 2019 3:31 am

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It was annoying me so I put a better angle on it.

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Re: 1951 Pontiac Chieftain

Post by Junkman » Sat Aug 17, 2019 5:29 am

The spares for a 70 year old gearbox arrive next week.

Fuck me, what a country.
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Re: 1951 Pontiac Chieftain

Post by chadders » Sat Aug 17, 2019 5:40 am

That's impressive in so many ways.
Mind you I imagine that some Morris Minor parts are readily available.
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Re: 1951 Pontiac Chieftain

Post by mercrocker » Sat Aug 17, 2019 7:56 am

As indeed they are - but not so much the early stuff of the Chieftain's vintage. Also they are 75 percent poor quality......As an aside my local gearbox place is currently elbow deep into a MkIX Jag transmission of Borg-Warner variety. Some of those parts are apparently almost impossible to source.....
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And drive shit old cars.
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Re: 1951 Pontiac Chieftain

Post by PhilA » Sat Aug 17, 2019 12:18 pm

Junkman wrote:
Sat Aug 17, 2019 5:29 am
The spares for a 70 year old gearbox arrive next week.

Fuck me, what a country.
What I ordered yesterday- all new apart from the drums. Those are used good spare parts.

Epicyclic drum front $82 (used but good)
Epicyclic drum rear $85 (used but good)
Fluid delivery sleeve $95
Front drum front bearing $13.90
Front drum rear bearing $13.07
Rear drum bearing $3 (x2)
Fluid delivery sleeve oil ring $3.42 (4x)
Clutch overhaul set $168.00
Rear drum outer return spring $3.45 (6x)
Main shaft thrust washer $9.00
Rear drum thrust washer $13.00 (2x)
Oil pump screws and servo spring $25.10
Rear planetary set bearing $13.25
Reverse gear sun gear bearing $22.90
Main shaft pilot bush $6.40

They made a very large number of these gearboxes from 1949 through to 1962 (in varying guises), the drums are model-specific but the rest is fairly common.
That's one reason there are still spares available, although there really aren't that many places that deal with the parts, this place appears to pride themselves on not actually screwing people out of absolutely all their money.

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Re: 1951 Pontiac Chieftain

Post by PhilA » Sat Aug 17, 2019 12:58 pm

mercrocker wrote:
Sat Aug 17, 2019 7:56 am
As indeed they are - but not so much the early stuff of the Chieftain's vintage. Also they are 75 percent poor quality......As an aside my local gearbox place is currently elbow deep into a MkIX Jag transmission of Borg-Warner variety. Some of those parts are apparently almost impossible to source.....
That surprises me, they probably made more of those than they did these though. There is waning mainstream interest in keeping dusty old stock but there's still a distinct lack of legislation in a lot of this country that allows people with cars as a hobby to pursue it, and even my Renault is seen as a collectible curio simply because it is now considered old. It actually qualifies for "antique" status in this state.
Yes, the Pontiac can be registered as an antique vehicle.
Most states have a specific registration for older vehicles because even the government recognizes that there's an interest in keeping some history alive...

As such there is still a decent cottage industry revolving around vintage vehicles- although predominantly from the beginning of the muscle car era through to the late seventies, some older stuff is still available and early common pieces like Ford T and A parts aren't that hard to come by.

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