15-08-2020, 05:17 AM (This post was last modified: 15-08-2020, 05:27 AM by Mark McKibbin.)
I have got to the part of the engine rebuild where I wanted to check that the oil jets do point at the crank, so while looking around the shed I had in mind something like a cat litter tray to hold the diesel and then I saw the paint roller tray. Quite frankly the designer must have had an Austin 7 engine in mind as the reservoir is only at the oil pump end so less diesel needed, it has a spout on one corner and it's just the right size.
It was worthwhile as the jets missed the crank holes by an inch.
16-08-2020, 01:16 AM (This post was last modified: 16-08-2020, 01:20 AM by Mark McKibbin.)
(15-08-2020, 02:50 PM)Zetomagneto Wrote: Nice Phoenix crank in there Mark.
Can I suggest the crankcase needs to be level in both directions to set the jets.
Well spotted, although the rate the diesel was coming out wouldn't leave much room for deflection and it was level east west, but I am making excuses for not wanting to get dieselled again.
(15-08-2020, 11:31 AM)Chris KC Wrote: Sounds like a worthwhile exercise Mark.
Wish I had that much free space on my workbench!!
It did take me half a day to win back that space, if only I could keep it that way.
Zetomagneto Wrote:
Nice Phoenix crank in there Mark.
Can I suggest the crankcase needs to be level in both directions to set the jet
______________________________________________________________
Does this mean that the big ends only get sufficient lubrication when driving on the straight and level. I very much doubt it as otherwise there would be a lot of sevens with big ends run down when running hard climbing hills.
John Mason.
Would you believe it "Her who must be obeyed" refers to my Ruby as the toy.
(15-08-2020, 02:50 PM)Zetomagneto Wrote: Nice Phoenix crank in there Mark.
Can I suggest the crankcase needs to be level in both directions to set the jets.
if you think about it, it probably doesn’t make much difference. It’s the relative positions if jet and crank that matter. If you tilt the crankcase, they move together.
Joined: Aug 2017 Posts: 370 Threads: 16
Reputation:
8 Location: Port Elizabeth, Sunny South Africa
Car type: '26 Chummy, '28 Top Hat, '33 Type "65", single seaters
We have a purpose built A7 engine rebuild stand which can flip a complete engine upside down, we do jet checking in this frame with the motor right way up as well as upside down as on the race cars we run the Forrest double oiler conversion.
I have a small rotary pump that possibly came from someone who collected tropical fish, I attach one end of a rubber hose the the bottom of the oil pump extension & the other end is in a tin of paraffin. A big plastic bath goes under the engine & I spin the pump with a battery drill. We use 2 rubber caps over the lower pair of jets whichever way the crank case is standing & the volume of spray is more than sufficient to direct the 'charge' at the crank & allow us to tweak the aim until we have maximum arc of crank 'acceptance' into the oil pocket.
