Classic cars forum & vehicle restoration.

[James_1]

Could some please explain to me the differences between the E93A engine and the 100E? I am rebuilding a special which currently has an E93A engine and gearbox but I would really like to have a four speed 105E gearbox using this http://www.smallfordspares.co.uk/en/part.phtml?PartID=3472. Could I fit this to an E93A engine if it was modified and if so, would it fit the chassis if appropriate mountings could be made up? How difficult is it to convert the con rods to accept bearings and is this expensive? The current engine is going to need a rebuild but if this is extremely expensive as far as parts is concerned I would like to fit a 100E engine because of the extra power and revs available. Is this sensible?
Thanks in advance and sorry for all the questions!
James

[Rick]

On the face of it the 1172cc 100E and 1172cc E93A engines are very similar, but in detail there are many differences I believe. For a start you can adjust the tappets in a 100E lump, whereas in the E93A you have to grind the valves (very high tech). I also *think* that the 100E has an integral waterpump, shell bearings, and the starter is on the opposite side, but perhaps a sv Ford buff could confirm all this?

R
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[ka]

Where do you start, according to the Cooper book, very little is interchangeable and he was right, possibly the flywheel and the camshaft!
The 100E runs an integral water pump, has adjustable tappets, bigger inlet valves (on the later big end shell engines early ones run similar sizes) different cam shafts (these are intechangable and are done so frequently as the 100E runs more advanced cam timing to give more top end power), bigger oil pumps, an external filter, thermostat, different crank, rods and pistons (same bore size but the crank has a different throw and the gudgeon pins are lower than the E93) .Heavier duty clutch, sump has the oil volume at the front, not at the rear as per E93, Inertia type starter motor requiring a starter solenoid, and that is about it. I understand that like the E93 that were made in at least three different founderies, the 100E went through a metamorphasis, in that early engines were white metal big ends, later were shells, and the different valve sizes as I have mentioned.
Shell kits are available for the E93 from Small-Fords, and these look just the job, they also sell adjustable tappets, and with a little welding to the sump, the 1ooE oil pump fits, to get the benefit of an oil filter use the Cooper method and re-route the oil supply. Finally, and the biggest downfall of the 100E is that it is over 40lbs heavier than the E93.
Having used both engines on the road and track, I prefere the characteristics of the E93, although it does take a little more engineering to achieve the desirables of the 100e. Finally the water pump is easy to get around, Demon Tweeks sell a superb electric pump, with a variable temperature adjustable control unit, expensive but the dogs bo**ocks!!!!

KA

[Greg]

Also to add to that, some years back I was reading in 'Sidevalve News', that during tests at Ford, the 'Uprights' (E93a etc), were found to be more aerodynamic than the 100e shape!.
..... That's why my 103 is soooooo sporty

[James_1]

Again, thanks KA. That was really helpful!

[Rick]

if anyone wants one or two E93A blocks let me know, as I'll probably get rid of the spares ones I have about the place

R
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