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Removing Harmonic Balancer On R32 Gtr

phat25t

By phat25t,
in General Maintenance

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phat25t Community Regular

phat25t

Posted
Posted

Hey I'm trying to remove the nut in the centre of the harmonic balancer with a power bar, I just want to make sure it needs to be turned anticlockwise because I know I've removed one on another car that was backwards(it needed to be turned clockwise to loosen.

Cheers ,

Steve

32_Dave Mentor

32_Dave

Posted
Posted
yep its a normal bolt. letft loosy, righty tighty.

could be vft though

they are VVVFFT (very very very f**king f**king tight) if its never been out before.

believe its 140-150 ft pound 14-15kg

get a steel pipe on the end of your breaker bar. if u got a flywheel lock use that or if your ghetto put a bolt in the block where the box would bolt up and pivot off it using a screwdriver slotted into the flywheel teeth. both methods work :D

cheers

Duncan Grand Master

Duncan

Posted
Posted
they are VVVFFT (very very very f**king f**king tight) if its never been out before.

believe its 140-150 ft pound ....

even worse on gtr, 400lb/ft. for some reason gtst is only 150 odd.

br3ndan Mentor

br3ndan

Posted
Posted

A good way of doing this is...

position ur breaker bar so its leaning on the ground put the key in the iginition and turn her over. The car will un do it for you.

Only attempt this if you are confident...im sure they didnt need to be said tho.

turbo_brian Community Regular

turbo_brian

Posted
Posted (edited)

http://www.enginebuildermag.com/Content/Si...00000006981.jpg

Use the right tools and to it properly.

You can get a hammer-tool and socket, place socket onto bolt, hammer-tool into socket (dont know it's actualy name or I would have put up a picture, but it's got an arm about 10cm long, then another arm from this about 80cm long, you hammer the longer arm and it shock-loads the bolt right at the thread).

Or you use a tool like in the picture above, where it holds the harmonic balancer from turning, and the 2nd arm is used against the harmonic balancer's locked pressure to turn the nut (uses SFA energy to crack the thread).

Reason you dont place the car in gear, or use a fly-wheel lock is because your then placing all your force down the length of the crank shaft, and if your hitting the bolt, using a rattle gun, etc your placing shock-loads onto the crank and potentially damaging the crank.

Reason you dont use the starter is for the same reason.

Dont get me wrong, these methods work, but they place un-due force on the internals of the motor, and 'could' cause potential failure points in the future.

EDIT: Almost forgot, USE FLAT FACED SOCKETS!!!! Dont use the milling grip sockets, you will almost certainly round the nut, and then be stuffed!!!

Edited by turbo_brian
  • 1 month later...
Jmaac Proficient

Jmaac

Posted
Posted (edited)

You can remove the starter and use a screwdriver to lock the flywheel before using a breaker bar. I still couldnt loosen it first time, but you may be able to. This worked after I loosed everything up using the method below.

I ended up using an electric impact gun. It removed it easily and effortlessley. I tried the first procedure for 2 days and started to go mental over the one bolt holding me up. Use a proper impact bit and it'll absorb all those nasty 'shock loads' (crank can handle it no probs anyway).

Use a proper fitting socket (full hex/flat face) as mentioned

Also as above bush mechanic style, you can use a breaker bar on the bolt and brace it against up against the chassis and crank the motor over with your starter. I would recommend against this though as the starter will give way before the crank

Edited by Jmaac
Duncan Grand Master

Duncan

Posted
Posted
I bought a breaker bar and smashed it as hard as I could but no go, not sure what to do with it now?

you get a longer breaker bar!

easiest way to do that is put a long jack handle / pole of some sort over the breaker bar. Once you get to 1-2m long you will have enough leverage to undo it

Rowdyr32 Mentor

Rowdyr32

Posted
Posted
you get a longer breaker bar!

easiest way to do that is put a long jack handle / pole of some sort over the breaker bar. Once you get to 1-2m long you will have enough leverage to undo it

I've had a couple where I have had to put a bicycle innner tube around the balancer and then a chain from the balancer to the front tow hook and then wrap a racket strap bloody tight around the inner tube and chain. This is the only way I could get two engines bolts to crack with a 3/4 drive breaker bar and a pole with two people.

There was to much flex in the drive train and couldn't get it to stay still any other way. It would just turn with the purchase. Some are bloody tight!

  • 1 month later...
phat25t Community Regular

phat25t

Posted
  • Author
Posted

Hey guys,

I still have not been able to get this off due to time and this thing being f%$king tight. How did you guys fit an impact gun in the engine bay?? I have the radiator out but theres not enough room to get my air impact gun behind the pulley.

Cheers,

Steve

Beer Baron Grand Master

Beer Baron

Posted
Posted

sadly having it done up too tight it still far better than the ones that are not done up tight enough and come undone!!! d'oh! happens a lot and is sometimes an easy fix and sometimes will cost you an engine.

R324DR Proficient

R324DR

Posted
Posted

with the right leverage you can undo most things. i had to put my car up on a hoist, attach a very long steel bar to the breaker bar, get underneath the car, and get two people to swing off it. not the most professional way of doing it, but it worked.

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