I now have a lathe and milling machine set up at home if anybody is interested in wanting one of these done or any other machining work.

I also have a very good company that I use for balancing.

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dattosans....if it's for race setup then go ahead do all out....but if it's for daily driven, not recommended....

demontweaks : i'm sure dattosans wanted it to be a hot street A series engine like lemonhead said,when u're gonna do sumthing,do to the max..

Ive had different engines over the years mainly with heavy flywheels & of recent with lightened and custom billet lightweight flywheels, lighter pistons vs heavier pistons, shorter/long rod & lightweight hollow cranks vs normal cranks.
There are many variables but lightweight reciprocating components add up to a more efficient engine in a wider rpm range wheres the opposite is only efficient if you stay within a limit low rpm range.
eg. lightweight components require more revving & spirited throttle usage heavy flywheel & internals require you to drive sedately and efficiently to use the torque part of the rpm otherwise consumption figures are worse than the opposite featherweight internals.
I prefer the latter in everyday driving and country cruising but on the track you want the opposite.

eg. suzuki and daihatsu engines have short rod & piston c-c designs with hollow
crankshafts and you can mistreat them all the time and provide great economy.

Vw 1300, early Mazda 1000, corolla K series, citroen 2cv, 4cv over 1.75 rod stroke ratio, tall pistons with full counterweighed cranks provide the least spirited performance but beautiful low end torque and good economy if you stay in the low rev range otherwise they chew fuel like its 15 cents per litre again.

I would prefer big capacity A series engine that has a tough stiff knife edged crank, heavier flywheel, 6500rpm redline, 1.21 rod stroke ratio with 30 mm pin height pistons & a small BB efficient turbo that makes its torque from 1800rpm. jet coated throughout hot spots & a liquid harmonic balancer with tall first, second, 1:1 third gear & .75 fourth gearbox to make sure you use the least gears & effort possible to enjoy the torque and efficiency it would have.

Lemonhead is the man to talk to for all your A series crank needs
even needs most havent thought of trying :)

Thanks D

It's my opinion knife edging a crank is the last thing on the list of things to do on the rotational parts of an engine.

I my opinion the first thing to invest in if your building a substantial motor on the rotating parts side is a decent very light weight flywheel and clutch set up, (i've got photo's in my album) I am not a big believer of machining too much of a standard flywheel, the thought of one grenading at high revs is enough to put me off having one. (I like my legs from the shins down ) Once again it depends what your plans are for the motor, me - I race them - Hard.

Next would be balancing everything from the head down by someone who knows what they are doing, it really does make a difference.

Knife edging a crank is not a job for the faint hearted, they are very good quality steel and you really need to know what you are doing, the one in my race car at the moment took six hours non stop standing at the lathe and then there is the other jobs that need to be done, oil galleries, polishing, balancing.

Don't let me put you off, all this is only my opinion based on experience.

good stuff Gary I'm sure you'll put those machines to good use. Does that mill have a geared head for speed changes?

hi guys,

when using this knife-edge crankshaft..do we need to use a dry sump or hi pressure oil pump to support the engine?or we can just use the stock oil pump?

Nah Morgan it's a vee belt drive head, it's the biggest single phase unit I could get, variable speed would have been nice, very happy though. I've bought a whole bunch of other gear as well.

bituten, in Australia we use engine mounts to support our engines, not oil pumps, lol.
(sorry mate, it's just my bizarre way of literally reading your post, no you do not need any mods to an oil pump )

LOL..glad to hear u're using engine mount to support it.. reading my question again making me laugh..haha

thanks lemonhead..