The COVID-19 & Corona free thread.

[JDNSW]

Curious in Adelaide writes.......
So the engine pump actually pumped an Air/Fuel mixture Paul ???

Even with the throttle closed, which wouldn't be if you wanted to pump air you'd still get some fuel vapour added to your tube right? In a sudden Blowout situation would that not have an undesirable reaction or did you possibly take the view that, that **** only happens to other people?

Curious in Adelaide.

EDIT. Maybe the Running In sticker should have read "Running in Water"?

These spark plug pumps actually had little if any petrol mixture in the delivered air - the device that screwed into the spark plug hole had a valve that allowed air to enter from the atmosphere on the intake stroke - with the throttle closed and idling there would be a fairly high vacuum in the intake manifold, so atmospheric pressure would ensure that the majority, if not all, of what entered the cylinder to come via this valve, rather than the inlet valve. I have seen two types of valve, one is a rubber diaphragm about 30mm across that covers a circle of 6mm holes on compression, the other is a slot in the side of the body, with a spring steel reed valve a bit like what is seen on some two strokes.

The major criticisms of them are that the air brought in is unfiltered, if you have an alloy head you really don't want to do a lot of pulling plugs in and out, and finally - by the time you have aired up four tyres, the device is often hot enough to start melting the hose - careful when you touch it to unscrew it!

[4bee]

Thanks for clarifying this, John, I haven't seen one of these up close & only from a distance & thought it would be a hose on the end of a Spark Plug like fitting. It wasn't even in use at the time either.


Know what you mean about melting the hose. I had a small 12v compressor under the bonnet of my olde D1 mounted near the firewall ,drivers side, hence a fairly sharp U bend on the hose although I did have a long coil spring on that section so it wouldn't flatten, but I should have, but didn't, take into account the heat of compressing air. Result? The spring stored the heat , the hose sometimes flattened out & it became a bit of a pig to use & that was down to me. Too late to rehash the mounting to the inner guard then so I lived with it knowing it's shortcomings. A bit of cold water over the bend made it more manageable.

[scarry]

Thanks for clarifying this, John, I haven't seen one of these up close & only from a distance & thought it would be a hose on the end of a Spark Plug like fitting. It wasn't even in use at the time either.


Know what you mean about melting the hose. I had a small 12v compressor under the bonnet of my olde D1 mounted near the firewall ,drivers side, hence a fairly sharp U bend on the hose although I did have a long coil spring on that section so it wouldn't flatten, but I should have, but didn't, take into account the heat of compressing air. Result? The spring stored the heat , the hose sometimes flattened out & it became a bit of a pig to use & that was down to me. Too late to rehash the mounting to the inner guard then so I lived with it knowing it's shortcomings. A bit of cold water over the bend made it more manageable.

We only used them in emergencies.
The hand pump was used a lot,if topping up.I remember getting blisters on my hands from using it
Just keep going,the old man would say
We still have an old hand, and spark plug pump.

[scarry]

Six cylinder I think had the battery under the front seat.

They didn't really like the six,used quite a lot more fuel than the four,and not much more go.

Also a few issues,burnt valves come to mind?

None of those early petrol engines liked water,a can or three of RP7,i think it was called,was an important piece of kit.
As were spare axles,fuel pumps,belts and hoses.

[4bee]

We only used them in emergencies.
The hand pump was used a lot,if topping up.I remember getting blisters on my hands from using it
Just keep going,the old man would say
We still have an old hand, and spark plug pump.

Here is a real old pic of one in use.

The vehicle would have been about 3yrs old at the most in that pic.

Looks like you are dressed to go Skiing. Remind me about that song of sitting under a Coolibah Tree.


SNAP! I have got one of those Capstans fitted to my girl. ("Eeeerrr ok, so have thousands of others, Mr Bee. SO?")

[4bee]

They didn't really like the six,used quite a lot more fuel than the four,and not much more go.

Also a few issues,burnt valves come to mind?

None of those early petrol engines liked water,a can or three of RP7,i think it was called,was an important piece of kit.
As were spare axles,fuel pumps,belts and hoses.

Burnt Valves did seem to be a problem with the six according to 2 blokes who drove an ex-PNG Defence Forces (ex ADF vehicle I believe) LR all over the shop up there. [ Must find that book.]


They discovered that giving the Exhaust valves an extra few thou. gap open made all the difference & stopped the problem of burnt valves.

Never seen this mentioned before anywhere so it could be right.

[JDNSW]

Actually, even just checking and adjusting the exhaust tappets regularly was pretty effective, but the issue is that it is not that easy, especially if the engine is hot - its under the exhaust manifold, and on the six pretty inaccessible because you are back in a recess in the firewall, much more so than on the four.

My experience with my petrol Landrovers has been that they are pretty good if the ignition components are in good condition and well maintained.

[RANDLOVER]

Actually, even just checking and adjusting the exhaust tappets regularly was pretty effective, but the issue is that it is not that easy, especially if the engine is hot - its under the exhaust manifold, and on the six pretty inaccessible because you are back in a recess in the firewall, much more so than on the four.

My experience with my petrol Landrovers has been that they are pretty good if the ignition components are in good condition and well maintained.

Which is why I like hydraulic bucket tappets, with the added bonus if the oil level is low you can hear them rattle and know to top up.

[scarry]

.


SNAP! I have got one of those Capstans fitted to my girl. ("Eeeerrr ok, so have thousands of others, Mr Bee. SO?")

Bloody handy the old capstan,except when the engine fan belt needs changing

Thats the old man in the pic,under some kind of tree in central Africa

Did you notice the Bently drivers club and RAC badges on the grill?

[4bee]

For an olde man he looks soooooo young, Paul.