1951 Pontiac Chieftain

Talk about your cars etc here. Keep it sort of sensible and on topic please.
DodgeRover
Posts: 13610
Joined: Sun Apr 14, 2019 11:24 pm
Has thanked: 1813 times
Been thanked: 2668 times

Re: 1951 Pontiac Chieftain

Post by DodgeRover »

Then the double gasket and a decent dollop of exhaust sealant between then mating faces.
User avatar
PhilA
Posts: 2926
Joined: Thu May 30, 2019 1:24 pm
Location: Larose, LA, USA
Has thanked: 915 times
Been thanked: 6446 times
Contact:

Re: 1951 Pontiac Chieftain

Post by PhilA »

*heave on bolt*

*bolt finally begins to move*

*tighten up again to clear threads*

*head shears off*
Pontac Cheepten
Plymmut Furey
User avatar
Hooli
Self Appointed Internet God
Posts: 33175
Joined: Mon Apr 08, 2019 9:25 pm
Has thanked: 14100 times
Been thanked: 10987 times

Re: 1951 Pontiac Chieftain

Post by Hooli »

Lol I've done that a few times myself. At least it's easier to extract with a clean thread.
Private signature, do not read
User avatar
PhilA
Posts: 2926
Joined: Thu May 30, 2019 1:24 pm
Location: Larose, LA, USA
Has thanked: 915 times
Been thanked: 6446 times
Contact:

Re: 1951 Pontiac Chieftain

Post by PhilA »

20191006_212548.jpg
20191006_212548.jpg (2.73 MiB) Viewed 4262 times
This is the problem. The exhaust manifold has shifted in relation to the intake.
20191006_213654.jpg
20191006_213654.jpg (3.34 MiB) Viewed 4262 times
That's what the noise was.
20191006_213155.jpg
20191006_213155.jpg (2.68 MiB) Viewed 4262 times
Split it all down, all the bolts broke.
20191006_213300.jpg
20191006_213300.jpg (2.57 MiB) Viewed 4262 times
The start of the removal process.

Phil
Pontac Cheepten
Plymmut Furey
User avatar
mercrocker
Numb3rP14t3Fun
Posts: 16793
Joined: Fri May 17, 2019 2:53 pm
Has thanked: 12082 times
Been thanked: 8520 times

Re: 1951 Pontiac Chieftain

Post by mercrocker »

Gaaa,...it was going so well too.
There's a great long bar in Rock & Roll heaven.......
User avatar
PhilA
Posts: 2926
Joined: Thu May 30, 2019 1:24 pm
Location: Larose, LA, USA
Has thanked: 915 times
Been thanked: 6446 times
Contact:

Re: 1951 Pontiac Chieftain

Post by PhilA »

Manifold bolts/studs are one of those things that will fail. To be honest I am surprised the nuts undid off the studs first time without shearing off, to remove the manifold.

It'll get there. Hopefully. I need to buy a decent pair of Mole grips.


--Phil
Pontac Cheepten
Plymmut Furey
User avatar
PhilA
Posts: 2926
Joined: Thu May 30, 2019 1:24 pm
Location: Larose, LA, USA
Has thanked: 915 times
Been thanked: 6446 times
Contact:

Re: 1951 Pontiac Chieftain

Post by PhilA »

VideoCapture_20191007-224819.jpg
VideoCapture_20191007-224819.jpg (305.66 KiB) Viewed 4220 times
Heat applied.
20191007_195814.jpg
20191007_195814.jpg (3.06 MiB) Viewed 4220 times
Ruddy things broke off anyway so I broke out the drills.
20191007_203140.jpg
20191007_203140.jpg (2.55 MiB) Viewed 4220 times
Cleaned the threads up with a tap.
20191007_203741.jpg
20191007_203741.jpg (2.82 MiB) Viewed 4220 times
Net result, threaded hole.
20191007_212115.jpg
20191007_212115.jpg (2.55 MiB) Viewed 4220 times
Repeat.

The exhaust manifold bolts are proving much more difficult. I already managed to go off center on one so ended up drilling it an oversize. The other one will be equally difficult, I know.

I have put a thread part way down that hole, will continue that tomorrow hopefully. Enough for tonight.

Phil
Pontac Cheepten
Plymmut Furey
User avatar
Junkman
Posts: 2948
Joined: Wed Apr 10, 2019 11:52 am
Location: The Parallel Universe of R16 Ownership
Has thanked: 258 times
Been thanked: 1253 times

Re: 1951 Pontiac Chieftain

Post by Junkman »

OK, that's a job even I'd have left to an engineering co. They often do this for beer money.
Supply Chain Disruption

1957 DKW 3=6 Sonderklasse
1967 Renault 16 GL
1983 Renault 4 TL
2001 Mercedes E240
2002 Datsun Dice
User avatar
panhard65
Posts: 3943
Joined: Wed Apr 10, 2019 7:18 am
Has thanked: 151 times
Been thanked: 4536 times

Re: 1951 Pontiac Chieftain

Post by panhard65 »

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.
I made that mistake with the local engine shop a few years ago when I left a Maserati manifold with them. £130 for 3 helicoils. It is so hard to find decent engineering shops down here, there are only about 3 options and I have tried then all. The only one that was any good has now retired which was rather annoying. The expensive place do good work but they are double everywhere else. Another one managed to fuck up a rebore by not actually boring one of the cylinders all the way. The third one did the crank for the hearse and although it stopped the noise the oil pressure was lower after the regrind.
1939 Hotchkiss 864
1966 Rover P5 (for sale)
1971 Lancia Fulvia Berlinetta (also for sale)
1977 Dodge 3700GT Hearse
1987 Renault 25 V6 Turbo
2010 Skoda Felica tdi
2013 Peugeot RCZ
2021 Yadea C1S Gay leccy scooter
User avatar
Scruffy Bodger
TeeShirtFun
Posts: 5291
Joined: Mon May 27, 2019 9:18 pm
Has thanked: 7949 times
Been thanked: 2391 times

Re: 1951 Pontiac Chieftain

Post by Scruffy Bodger »

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. Pity about the off centre one but it does happen from time to time. Inconsequential in the sum of things though for what you've achieved on this project so far! I take it you haven't got a drill press there? Always much easier than doing it by hand.
Post Reply