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.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.
1951 Pontiac Chieftain
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Re: 1951 Pontiac Chieftain
Supply Chain Disruption
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Re: 1951 Pontiac Chieftain
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.Junkman wrote: ↑Tue Oct 08, 2019 10:40 amThey 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.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.
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Re: 1951 Pontiac Chieftain
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.
Last night's progress.
Phil
The exhaust manifold side went off track because there's a big chunk of manifold in the way.
Last night's progress.
Phil
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Re: 1951 Pontiac Chieftain
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
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Re: 1951 Pontiac Chieftain
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
We'll see how well it works and if the tap breaks off in it first.
--Phil
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Re: 1951 Pontiac Chieftain
I chose Bloody Stupid Thread Pitch(tm)
Bolt it is
Phil
Bolt it is
Phil
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Re: 1951 Pontiac Chieftain
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Re: 1951 Pontiac Chieftain
PhilA wrote: ↑Tue Oct 08, 2019 2:19 pmHonestly 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.
Supply Chain Disruption
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1967 Renault 16 GL
1983 Renault 4 TL
2001 Mercedes E240
2002 Datsun Dice
1957 DKW 3=6 Sonderklasse
1967 Renault 16 GL
1983 Renault 4 TL
2001 Mercedes E240
2002 Datsun Dice
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Re: 1951 Pontiac Chieftain
The former live closer to the races
The latter have fewer tools than I do
The latter have fewer tools than I do
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Re: 1951 Pontiac Chieftain
After a little hiatus, manifolds now bolt together again.
Needs a little finessing still, and new gaskets but that should do.
Phil
Needs a little finessing still, and new gaskets but that should do.
Phil
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