How do you make a MF35 a better starter?

Right, it depends on how far you want to go, but if it's using oil, I would put pistons and liners in it, and don't refit bottom oil control ring
As for low oil pressure, the 23rd engine has very big mains, big enough to get the crank out the end, yes that's right, the big end cap don't take off, they are cast as part of the block, and for this reason it takes very little wear on the shells to loss oil when warm, wether you want to do it is up to you, However if the oil pump is good, and good oil in it, then it will be getting lubricant to it, just not holding it in, will run a long time like this, but again if your keeping it long term, then I would do the crank as well when your in there,
The cylinder head, you have done a far bit externally, but it internal where the work needs done, new valves, and just skim the valve seats with a valve seat cutting tool, lap the valves in, and stand overnight with petrol in the ports to find any leaks,
The pre combustion chamber ports need opening out, and want to look like the inside of a church bell , don't over do it, and need to take it off the sharp side of the hole, leave the blunt side as is, best way is the end off a chainsaw file in the drill, but take the grinder to the very end of a short bit of file to smooth it so it don't dig in to the head at all, yet the sides will cut the mouth open
Reason for the valves is, as they wear over time, they drop in more and lower the combustion pressure,
Reason for opening the ports out is, the piston has pasted tdc before chamber pressure is high enough to fire, this let's air in faster and higher pressure,
Timing, there is a TDC mark on the flywheel, needs split for this, with no 1 & 4 pistons on TDC, and cam shaft in right place, to do the cam, with the head on, place a dial test gauge on no 4 rockers do both inlet and exhaust, get them on the rock, ie when exhaust is about closed and inlet is starting to open, is bang on, fit a new chain to sprockets, with the tight side away front tensioner, if it's slack or cannot be fitter without moving the cam, unbolt, 5 bolts hold sprocket on to cam, turn sprocket to next hole, each time you move it a hole, it's 1/4 of a tooth of movement, keep doing it till you get it to bolt on, and chain tight on driving side, slack on tensioner side, and valves are on the rock still, , to check turn engine over twice making sure not to pass TDC, and not to allow it to go backwards, check again, ,
Now the pump drive bush, unbolt the housing off the side of the block remove injector pump, there is an intermediate gear in there, see if any side movement at all, if so this will throw injection pump timing out, if so remove the bolt holding the gear in and remove the gear, new bush will need to be made, I get blanks from bearing factors, and turn to size in the lathe,
After that is done fit injection pump, take side plate off pump, line up G with circlip and refit housing to block,
Once all that's done final check not piston on TDC valves on no 4 piston on the rock, and injection pump on G on bottom hole of circlip
I am a newbie doing up a FE35 with a Standard 23C 4-cylinder diesel engine. I know nothing but understand that the last bulletin from MF on these engines in 1959 concerned excessive wear of the sleeves due to oil starvation which they put down to the oil ring below the gudgeon pin. MF initial advice was that if restoring the engine, the fifth ring, the ring below the gudgeon pin, should be left out. There followed suggestions about modifications to the ring and subsequent to that, installation of "pilot start" which they were marketing to improve starting. Shortly after, the 23C was dropped in favour of the Perkins 3-cylinder. Lance Maskell of Bundy Bears Shed fame www.bundybearsshed.com has rebuilt a number of Standard 23C engines and says that in the past the fifth ring was omitted but that the fifth ring in the Sparex kit has been modified and he now fits it. I hope that this might help someone?
 

SFI - What % were you taking out of production?

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  • 100% I’ve had enough of farming!

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Red Tractor drops launch of green farming scheme amid anger from farmers

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As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
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