Getting the 54mm flywheel nut off

Started by Prof, October 17, 2009, 07:36:09 PM

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Prof

Thought I\'d set apart cracking engine number open, see what\'s needed for a rebuild.  I managed to crack the 19mm one on the front pulley by putting my considerable frame on the end of nearly 6 foot of pipe and a 1/2" drive hexagonal hi torque socket.  That one gave quite easily.
 
Armed with that success, I thought I\'d use the same trick on the big flywheel nut...
 
 
 
 
...nah - not going to happen.  Martin H - Noyzboy100db - happened to drop in just at that moment - so I borrowed him to stand on the engine whilst I levered the big nut.  Again nothing.
 
A quick squirt of Tesco\'s maintenance spray - this stuff has shifted some nuts that even duck oil didn\'t in the past - and at a quid a tin it\'s cheap as...
 
In the mean time a quick call to the Bish to see if he had a 1" air driver - for my big socket - nope - his is 3/4 and I\'ve no adapter :(
 
Anyway, after chatting with the Bish I was about to try his suggestion of bolting the engine down to the concrete drive - yep - that really was almost on the cards.  Anyway - one last attempt, with Martin levering with one big bar on the front of the engine and standing on it, and myself standing on the rear of the engine and on the big pipe and unbelievably the flywheel nut started to go.
 
Anyway - for anyone wanting to do this with an engine out of the car - I recommend getting Martin round and investing in a tin of the magic spray from Tesco\'s. :Giggle
"Plus this engine is probably one of the most volumetric engines going! It passes more air than a herd of cows eating vindaloo\'s" - courtesy of AtomicRex


bnaellis

Quote from: Prof;648527Thought I\'d set apart cracking engine number open, see what\'s needed for a rebuild.  I managed to crack the 19mm one on the front pulley by putting my considerable frame on the end of nearly 6 foot of pipe and a 1/2" drive hexagonal hi torque socket.  That one gave quite easily.
 
Armed with that success, I thought I\'d use the same trick on the big flywheel nut...
 
 
 
 
...nah - not going to happen.  Martin H - Noyzboy100db - happened to drop in just at that moment - so I borrowed him to stand on the engine whilst I levered the big nut.  Again nothing.
 
A quick squirt of Tesco\'s maintenance spray - this stuff has shifted some nuts that even duck oil didn\'t in the past - and at a quid a tin it\'s cheap as...
 
In the mean time a quick call to the Bish to see if he had a 1" air driver - for my big socket - nope - his is 3/4 and I\'ve no adapter :(
 
Anyway, after chatting with the Bish I was about to try his suggestion of bolting the engine down to the concrete drive - yep - that really was almost on the cards.  Anyway - one last attempt, with Martin levering with one big bar on the front of the engine and standing on it, and myself standing on the rear of the engine and on the big pipe and unbelievably the flywheel nut started to go.
 
Anyway - for anyone wanting to do this with an engine out of the car - I recommend getting Martin round and investing in a tin of the magic spray from Tesco\'s. :Giggle


I chain my engines to the front gard wall railing. I have a breaker bar can\'t remember if it\'s 3/4 or 1inch with trhe big sock the width 3/4 or 1inch and I have a long pole about 8ft long. Makes even the most stubbron flywheel nuts a doddle. You can come borrow if you want or bring the engine round and i\'ll undo it for you whatever you prefer.


rgds
Brian

Bob Monkhouse

350lb/ft or more to undo it. So you need a bar(not one for standing at) a foot long and a very porky friend, this is where fat boys get to make friends!!! Either that or two fat slags from Mixenden.

David Nock (RIP)

You can chain drill the nut on its side face with a 1/8 or smaller drill then split it off with a cold chisel. It means a new nut for the rebuild.

@ Bob...know Mixxy and agree.
1985 1st Generation FB-Silver. UK Car-K Reg.
Departed this world on June 23rd 2019
http://mazdarotaryclub.com/forum/index.php?topic=84914.msg910901#msg910901
Sadly Missed

Prof

It actually came off relatively easy in the end - all be it with the opposing effort of 2 breaker bars - one of which had 4 foot of trolley jack handle slipped over the end ;)
 
I guess we must have \'cracked\' it on the earlier attemps and the maintenance spray just eased it off.
 
I love the ingenuity of different folk in geting these off - Brian chaining engines to fences, bish bolting the engine to the floor...
"Plus this engine is probably one of the most volumetric engines going! It passes more air than a herd of cows eating vindaloo\'s" - courtesy of AtomicRex


DR SCHNITZEL

i undo this nut with a spanner thast 1 foot long and a small hammer. it comes of pretty easy with impact.

Bob Monkhouse

Quote from: David Nock;648648You can chain drill the nut on its side face with a 1/8 or smaller drill then split it off with a cold chisel. It means a new nut for the rebuild.
 
@ Bob...know Mixxy and agree.
Its been many years since I\'ve been through Mixenden(didn\'t stop though) but one fat slag from up there would probably be enough to crush the never mind your nuts!!!!!!!:rollin

rx jamie

Quote from: DR SCHNITZEL;648671i undo this nut with a spanner thast 1 foot long and a small hammer. it comes of pretty easy with impact.


yeah thats how i get mine off. a 54mm socket, 2 foot breaker bar and a sledge hammer. never fails

Grizzly

Just slightly off topic, Did anyone see Tim (Rxmotors fame) in the Mag article years ago and his bar :)

A mate has the Magazine, i\'ll have to get it scanned and put it up.