Page 41 of 197
Re: 1951 Pontiac Chieftain
Posted: Tue Oct 08, 2019 10:40 am
by Junkman
Scruffy Bodger wrote: ↑Tue Oct 08, 2019 10:29 am
I did wonder if it'd be easier to just cut them off flush, centre punch and drill and tap them than muck about with penetrating fluid etc.
They can be surprisingly tough, having gone through thousands of cool/hot/cool cycles resembling a hardening process, so they often just grin at drill bits. The usual guess how I found out applies.
Re: 1951 Pontiac Chieftain
Posted: Tue Oct 08, 2019 11:12 am
by Scruffy Bodger
Junkman wrote: ↑Tue Oct 08, 2019 10:40 am
Scruffy Bodger wrote: ↑Tue Oct 08, 2019 10:29 am
I did wonder if it'd be easier to just cut them off flush, centre punch and drill and tap them than muck about with penetrating fluid etc.
They can be surprisingly tough, having gone through thousands of cool/hot/cool cycles resembling a hardening process, so they often just grin at drill bits. The usual guess how I found out applies.
Not always easy no but a decent bit with a more aggressive grind if need be, at the right speed and a drill press of some sort gives you a fighting chance. A great trick I learnt from a toolmaker for really hard steel is a sharpened masonry bit. That is pretty much a last resort though.
Re: 1951 Pontiac Chieftain
Posted: Tue Oct 08, 2019 1:18 pm
by PhilA
I would love a drill press but right now I can't afford one, so I'm having to exercise Steady Hand and handheld power drill.
The exhaust manifold side went off track because there's a big chunk of manifold in the way.
- 20191008_070745.jpg (2 MiB) Viewed 4234 times
Last night's progress.
Phil
Re: 1951 Pontiac Chieftain
Posted: Tue Oct 08, 2019 2:19 pm
by PhilA
Junkman wrote: ↑Tue Oct 08, 2019 7:21 am
OK, that's a job even I'd have left to an engineering co. They often do this for beer money.
Honestly there are none I would entrust this to around here.
You saw the kind of result I got from "the best" radiator place- $800 to maybe fix it
Engineering is hailed as something that is good and needs doing but only when it comes to oilfield work or tractors around here
Cars can gtfo as far as most engineering shops are concerned because the punters that bring them in usually can gtfo and that's the root cause. They don't like customers because 90% of them are all timewasters/complainers/facebook artists
Re: 1951 Pontiac Chieftain
Posted: Tue Oct 08, 2019 7:25 pm
by PhilA
I think I may see about putting a helicoil in that hole.
We'll see how well it works and if the tap breaks off in it first.
--Phil
Re: 1951 Pontiac Chieftain
Posted: Wed Oct 09, 2019 1:33 am
by PhilA
I chose Bloody Stupid Thread Pitch(tm)
Bolt it is
Phil
Re: 1951 Pontiac Chieftain
Posted: Wed Oct 09, 2019 1:26 pm
by PhilA
- 20191008_212249.jpg (2.69 MiB) Viewed 4191 times
I got tired of drilling holes so popped the alternator open. The diode trio (orange piece) is bad, so that's hopefully going to be why it's not charging properly.
Phil
Re: 1951 Pontiac Chieftain
Posted: Wed Oct 09, 2019 3:05 pm
by Junkman
PhilA wrote: ↑Tue Oct 08, 2019 2:19 pm
Junkman wrote: ↑Tue Oct 08, 2019 7:21 am
OK, that's a job even I'd have left to an engineering co. They often do this for beer money.
Honestly there are none I would entrust this to around here.
You saw the kind of result I got from "the best" radiator place- $800 to maybe fix it
Engineering is hailed as something that is good and needs doing but only when it comes to oilfield work or tractors around here
Cars can gtfo as far as most engineering shops are concerned because the punters that bring them in usually can gtfo and that's the root cause. They don't like customers because 90% of them are all timewasters/complainers/facebook artists
I'd have thought there is a shitload of those racing car types down there. And big bloody motorboat engine molesters.
Re: 1951 Pontiac Chieftain
Posted: Wed Oct 09, 2019 5:34 pm
by PhilA
The former live closer to the races
The latter have fewer tools than I do
Re: 1951 Pontiac Chieftain
Posted: Fri Oct 11, 2019 1:02 am
by PhilA
After a little hiatus, manifolds now bolt together again.
- 20191010_181249.jpg (2.36 MiB) Viewed 4147 times
Needs a little finessing still, and new gaskets but that should do.
Phil