Main Crank Shaft Bolt

[sjpalmer1]

Quick Question, Is the main bolt that scures the front pulley to the crank shaft left or right hand thread ?
Cheers

[spend]

Undo it normally ~ anticlockwise (RHt)

Dave

[sjpalmer1]

Thanks, thought I'd just check as it doesn't want to move.

[victormeldrew]

It torques to some ridiculous setting (300ftlb springs to mind but don't quote me) so I'm none too surprised it is reluctant to move. A 6ft scaffold pole may be useful.

[mdotrutherford]

I was intrigued by a post regarding this on the Griff forum couple of months back,
the guy was having a real mare, unfortunately as happens sooooo many times the thread fizzled without
telling how it ended up IIRC. Try a search - note to you and me !
Sorry, Im a Divv, just searched and it was a sheared one he was trying to remove the remains of, having said that
I guess theres a tale to be warey of !, and back to my original point the thread was not conclusive.

Edited by mdotrutherford on Sunday 25th March 12:52

[GreenV8S]

It's around 140-160 lbft, but you need to be careful because it has to be done up tight to stop the pulley fretting, but apparently you only need to overtighten it by a small amount to snap it.

[sjpalmer1]

Finally got it off, took the 6 smaller bolts off first, leaving the rear part still on the end of the crank then cut a piece of flat steel and drilled it to pick up on the 6 bolts, welded a piece of tube to this that passed through the chassis on either side. Socket, long breaker bar, a friendly little tap with the lump hammer and it finally came undone. Fitted trigger wheel for mega-squirt ecu and re-assembled, cheers for the advise about over tightening.

[jonnyb]

Just taken mine off last week, the book figure for torque was 270lbsft. Fortunately mine was not done up this tight and a 3ft breaker bar was more than a mach for it.

[boosted ls1]

jonnyb said:

Just taken mine off last week, the book figure for torque was 270lbsft.

Are you sure? I thought it was as V8S stated. You're not thinking of 270 Nm/s are you? Worth checking before you replace it

Boosted.

[2Munkys]

I double checked the figure last year when I had the front end apart. I think it was 170 lb ft which I'm told was a slight reduction on previous recommendations. Make sure you use a new bolt too.

[jonnyb]

boosted ls1 said:

jonnyb said:

Just taken mine off last week, the book figure for torque was 270lbsft.

Are you sure? I thought it was as V8S stated. You're not thinking of 270 Nm/s are you? Worth checking before you replace it

Boosted.

Sorry, yes your right 270Nm.