I checked the compression on #3 and #7 again and despite soaking down with solvents and giving the car a good high speed run #7 came round and is a healthy 125 psi, #3 less so:
Polished up the emblems on the wheel trims because I forgot to do them when I did the rest of the paintwork.
Went get fuel and got stuck at the bridge again. Need to get a new battery, this one is toast.
Phil
I wound the engine round to just after TDC on #3 and filled it with Berryman B12. That all leaked down through the valves so the head needs to come off and the valves need to be lapped in again. #7 is clicky noisy. They are cycle neighbors so will have had open valves while the car sat up after the storm. I'll clean the guides out again.1951 Pontiac Chieftain
- PhilA
- Posts: 2967
- Joined: Thu May 30, 2019 1:24 pm
- Location: Larose, LA, USA
- Has thanked: 934 times
- Been thanked: 6539 times
- Contact:
- paulplom
- The Geordie Lord, Mario!
- Posts: 26176
- Joined: Fri Aug 23, 2019 7:01 am
- Has thanked: 10323 times
- Been thanked: 5511 times
- PhilA
- Posts: 2967
- Joined: Thu May 30, 2019 1:24 pm
- Location: Larose, LA, USA
- Has thanked: 934 times
- Been thanked: 6539 times
- Contact:
Re: 1951 Pontiac Chieftain
Rusty valve seat.
Thankfully it's not hugely complicated to do, just a pain in the ass.
Pontac Cheepten
Plymmut Furey
Jaaaaag
Plymmut Furey
Jaaaaag
- paulplom
- The Geordie Lord, Mario!
- Posts: 26176
- Joined: Fri Aug 23, 2019 7:01 am
- Has thanked: 10323 times
- Been thanked: 5511 times
- PhilA
- Posts: 2967
- Joined: Thu May 30, 2019 1:24 pm
- Location: Larose, LA, USA
- Has thanked: 934 times
- Been thanked: 6539 times
- Contact:
Re: 1951 Pontiac Chieftain
I guess. I need to shuffle the cars about on the driveway then; I've got a plastic folding table that'll serve as a workbench.
Pontac Cheepten
Plymmut Furey
Jaaaaag
Plymmut Furey
Jaaaaag
-
- Posts: 13756
- Joined: Sun Apr 14, 2019 11:24 pm
- Has thanked: 1827 times
- Been thanked: 2713 times
Re: 1951 Pontiac Chieftain
Did they have a reputation for that when they were new? Seems an odd problem to suffer from after such a relatively short time.
- mercrocker
- Numb3rP14t3Fun
- Posts: 17065
- Joined: Fri May 17, 2019 2:53 pm
- Has thanked: 12296 times
- Been thanked: 8702 times
Re: 1951 Pontiac Chieftain
Crap modern fuel, high humidity and an enforced lay-up all not helping probably.
There's a great long bar in Rock & Roll heaven.......
- PhilA
- Posts: 2967
- Joined: Thu May 30, 2019 1:24 pm
- Location: Larose, LA, USA
- Has thanked: 934 times
- Been thanked: 6539 times
- Contact:
Re: 1951 Pontiac Chieftain
This. All sidevalve engines tend to suffer from it because the valve guides are at the top the valve chest, which is open to atmosphere. Condensation wicks up the stems because they aren't sitting in pools of oil like OHV engines, they rely on the oil mist inside the crank for lubrication.mercrocker wrote: ↑Mon Jun 06, 2022 4:09 pm Crap modern fuel, high humidity and an enforced lay-up all not helping probably.
That and the exhaust has no baffles, it's a straight through so the humidity gets in that way and rusts the valve seats, ditto the intake.
They are known for doing this when they've sat up for a while.
Pontac Cheepten
Plymmut Furey
Jaaaaag
Plymmut Furey
Jaaaaag
- PhilA
- Posts: 2967
- Joined: Thu May 30, 2019 1:24 pm
- Location: Larose, LA, USA
- Has thanked: 934 times
- Been thanked: 6539 times
- Contact:
Re: 1951 Pontiac Chieftain
Don't regret it though, the car runs a lot better now, particularly at idle.
Pontac Cheepten
Plymmut Furey
Jaaaaag
Plymmut Furey
Jaaaaag
- Hooli
- Self Appointed Internet God
- Posts: 33550
- Joined: Mon Apr 08, 2019 9:25 pm
- Has thanked: 14348 times
- Been thanked: 11128 times
Re: 1951 Pontiac Chieftain
No idea, but I need one in the XJR & the usual places are asking £200 or so.
Private signature, do not read