1951 Pontiac Chieftain
- PhilA
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Re: 1951 Pontiac Chieftain
Thankfully it's not a hugely complicated engine to pull to bits.
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Re: 1951 Pontiac Chieftain
Twice as complicated as my straight 4 side valve engines...
or just as complicated as both the straight 4 side valves engines together I have
or just as complicated as both the straight 4 side valves engines together I have
- Junkman
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Re: 1951 Pontiac Chieftain
Even I would do a compression test before ripping off the head. Besides, can't you inspect the valve movement by removing the inspection plates?PhilA wrote: ↑Fri Oct 25, 2019 4:57 pm I managed to capture the tictictic and misfire at idle- seems as though I got me a couple valves that are sticking open.
Gonna pull the head off, pull the valves and check for straightness, cleanliness and all the other good things that cause valves to jam.
--Phil
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1957 DKW 3=6 Sonderklasse
1967 Renault 16 GL
1983 Renault 4 TL
2001 Mercedes E240
2002 Datsun Dice
- PhilA
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Re: 1951 Pontiac Chieftain
Compression testing gauge is required for that analysis. Mine is in England.
I could pull the plates off and examine but it doesn't do it all the time.
I do need to undo the head bolts to re-torque them in sequence, so lifting it off is quite trivial
Phil
I could pull the plates off and examine but it doesn't do it all the time.
I do need to undo the head bolts to re-torque them in sequence, so lifting it off is quite trivial
Phil
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Re: 1951 Pontiac Chieftain
But lifting off the head of a flathead will not necessarily reveal what's wrong.
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1957 DKW 3=6 Sonderklasse
1967 Renault 16 GL
1983 Renault 4 TL
2001 Mercedes E240
2002 Datsun Dice
- PhilA
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Re: 1951 Pontiac Chieftain
No, but it does allow me to pull the valves out.
I really do think one major problem is #8 exhaust which was sticky before and liked to jam open.
I had put stethoscope screwdriver and the racket was coming from that area.
I really do think one major problem is #8 exhaust which was sticky before and liked to jam open.
I had put stethoscope screwdriver and the racket was coming from that area.
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- Hooli
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Re: 1951 Pontiac Chieftain
At least the head is nice & light from memory...
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- Junkman
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Re: 1951 Pontiac Chieftain
Must be some carbon deposit that worked itself into the valve guide.
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1957 DKW 3=6 Sonderklasse
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1957 DKW 3=6 Sonderklasse
1967 Renault 16 GL
1983 Renault 4 TL
2001 Mercedes E240
2002 Datsun Dice
- PhilA
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Re: 1951 Pontiac Chieftain
Very possible. It comes and goes so whatever it is surely isn't going to be doing the stem and guide any favors, particularly if it's rust or anything that's harder than the surrounding metal.
Phil
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Re: 1951 Pontiac Chieftain
Well, if it's playing up, it needs to be investigated. It's just such a shame, though, since you just put in a new head gasket IIRC. But I think on flatheads you can actually reuse them if they aren't outright defective.
Supply Chain Disruption
1957 DKW 3=6 Sonderklasse
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