Imminent Catastrophe?

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Mick D
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Re: Imminent Catastrophe?

Post by Mick D »

Hi

I'm with Ozmadman on this - I see nothing wrong with those photos.

Have you had a close look at the rigging and operation of the valve lifter - could this be inadvertently contacting the valve train?

Regards Mick
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Expat
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Re: Imminent Catastrophe?

Post by Expat »

Thanks for the replies chaps. Good to hear that the wear on the springs is fairly minimal but would you not agree that they are beyond tired?

The dims. of 1 3/4 and 1 5/8 inch are of the overall spring height taken from outside of the wire.

This compares to the size found in a technical article in a Jampot forum post stating that springs are past sell by date when measuring less than 1 11/16 INSIDE the wire ‘jaw'.

So mine are equivalent of 1 1/4 and 1 1/2 inches inside, well knackered. I will check that after work
today.


Reckon it's looking like Janet got it right way back and the rattling sound is valve bounce.

I'll check the exhaust gear as well.


Mick,

yeah valve lifter is all good, checked it early on.
Keep shiny side up.

These are my principles, if you don’t like them, I have others. (Groucho Marx)
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Expat
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Re: Imminent Catastrophe?

Post by Expat »

Well everybody, see what we have here, bit of a mystery to me anyway.
1DC2F64B-A755-4F2A-BA25-DBEAF36C5C0F.jpeg
5AD9D279-2476-46D3-8483-96F7B8A57237.jpeg
Has someone been playing games?
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Last edited by Expat on Wed Nov 28, 2018 2:44 am, edited 1 time in total.
Keep shiny side up.

These are my principles, if you don’t like them, I have others. (Groucho Marx)
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Expat
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Re: Imminent Catastrophe?

Post by Expat »

So which is correct regarding spring leg position and spring plate in terms of the upstand piece? (You know what I mean :oops: )
A8A26398-E02D-4245-9EB2-EA2875BDD6F4.jpeg
Has
FB3F2A1C-376F-4858-B70C-7F45082E291F.jpeg
To reverse the original set up would mean reassembling as per the second pic, which just wouldn't seem right.

Any thoughts on the number of coils difference? I'm really curious now. :shock:

Whaddaya think? Thanks

Steve
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Keep shiny side up.

These are my principles, if you don’t like them, I have others. (Groucho Marx)
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Pharisee
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Re: Imminent Catastrophe?

Post by Pharisee »

I posted this photo on page 6 of this thread. You can see that the springs 'interlace'... Not as you've shown them in the photos you posted.
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Mick D
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Re: Imminent Catastrophe?

Post by Mick D »

Hi

Here's the springs on my 1961 G3 pre restoration - four coils:
Valve Springs.png
Regards Mick
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oldandsmelly
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Re: Imminent Catastrophe?

Post by oldandsmelly »

I've just checked a spare 55 G80 engine and that has a 4 coil spring on inlet and 3 on the exhaust! I wonder if the differences are significant or whether AMC were using whatever came to hand? I've also checked a number of lightweight heads in my stores and they are all 3 coilers.
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ajscomboman
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Re: Imminent Catastrophe?

Post by ajscomboman »

oldandsmelly wrote:I've just checked a spare 55 G80 engine and that has a 4 coil spring on inlet and 3 on the exhaust! I wonder if the differences are significant or whether AMC were using whatever came to hand? I've also checked a number of lightweight heads in my stores and they are all 3 coilers.
I agree 100%. 4 coils for all heavyweights and 3 for Lightweights, the spring rate and gauge of the L/W springs is slightly different as well.
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Expat
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Re: Imminent Catastrophe?

Post by Expat »

Hi Pharisee,

Silly me, yes of course as you point out they are as in your pic when on the bike. In my eagerness to take pics I didn't think about that.

The point I was trying to ask was that it seems the springs can only fit on the plate one way round, ie they are not ‘Ernie wurzul' as my old foreman used to say :)

Mick,

Great, thanks. I reckon that's how mine should be, and will be now!


old and smelly,

Thanks for that, more clues. Exhaust set up has the same type of springs.


Ajscomboman,

Thanks, you've confirmed what I had started thinking.


It seems to me that someone has fitted LW springs for some reason, so I'll try putting the four coil set back on and see what happens.


Thanks all for your help, I'll report back with the results.


Steve
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These are my principles, if you don’t like them, I have others. (Groucho Marx)
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Expat
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Re: Imminent Catastrophe?

Post by Expat »

Well I got the other valve spring set fitted while the head was still on, very convenient I must say. Followed advice given here in part by bringing piston up to tdc, then found that valves only drop a small amount so no chance of losing one :o


But blimey, what a fight getting springs on!! Don't have a tool, so fingers, screwdrivers and anything else to hand was needed and several attempts too. The first spring to fit wasn't too bad, but the second....... :x .
The unexpected warm weather front was not appreciated at all, got in a right sweat, needing several cold beers after as a reward :beer: :beer:

Got her fired up after, set the rocker non clearances and just a few bits and bobs to finish off before the pudding eating :lol:

Still can't fathom why the wrong springs were in there :?: Had asked the PO previously if he had taken the head off but answer was no. It's possible it was that way when he bought it, or maybe had some work done by a ‘specialist'. Dunno.

More to follow.
Keep shiny side up.

These are my principles, if you don’t like them, I have others. (Groucho Marx)
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