Flywheel torque spec?
Flywheel torque spec?
Author
Discussion

Brap_Brap

Original Poster:

753 posts

239 months

Wednesday 16th September 2009
quotequote all
I can't see how "good and tight" can be any worse than what is specified given the function of the bolts, but I'd like to do it by the book. Anyone know what the lt77 flywheel torque specs are?

Brap_Brap

Original Poster:

753 posts

239 months

Wednesday 16th September 2009
quotequote all
  • bump* Can't proceed without this spec. Gimme the spec and I can have the engine/tranny in, in two hours. Please someone reply.... after the two lumps are in I can put the body back on! biggrin

grahamw48

9,944 posts

268 months

Thursday 17th September 2009
quotequote all
I just looked it up on the SD1 site, and they said 60lbs. smile

GreenV8S

31,024 posts

314 months

Thursday 17th September 2009
quotequote all
Google has the answer for you.


Brap_Brap

Original Poster:

753 posts

239 months

Thursday 17th September 2009
quotequote all
I saw that too, but is that safe to assume with a pressure plate giving more pressure/PSI whatever? I'd trust a TVR spec more than an SD1

Brap_Brap

Original Poster:

753 posts

239 months

Thursday 17th September 2009
quotequote all
GreenV8S said:
Google has the answer for you.
Ha ha. "let me google that for you"

IOW, STFW! biggrin

BTDT, I was just curious if the p-plate affects that torque number. If you've got a p-plate pushing back harder than stock, things might change.

I'd be curious to know what Borg-Warner says...

Edited by Brap_Brap on Thursday 17th September 00:55

rev-erend

21,623 posts

314 months

Thursday 17th September 2009
quotequote all
Download the Land Rover V8 manual for free here :

http://www.landrover.ee/est/varia/downloads/engine...

Showns flywheel bolts as 80nm (59 ft lbs)..

GreenV8S

31,024 posts

314 months

Thursday 17th September 2009
quotequote all
Brap_Brap said:
BTDT, I was just curious if the p-plate affects that torque number. If you've got a p-plate pushing back harder than stock, things might change.
All the figures I've seen (online and offline) all say 60 lbft. There's no reference to the pressure plates, and since these do vary considerably my conclusion is that within the range of common engine specs it makes no odds. Perhaps if you get far enough away from the common engine specs you might need a stronger connection, in which case you'd probably be looking at different bolts too. In this case you probably wouldn't have a standard crank or flywheel and it would need to be put together by somebody who knows what they're doing.

rev-erend

21,623 posts

314 months

Thursday 17th September 2009
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I used ARP bolts for my flywheel.. with threadlock.

carob

3,585 posts

241 months

Thursday 17th September 2009
quotequote all
Lube plays an important factor in the figure for any tightening proceedure.

What lube are you using as this affects the C.O.F.

Rob

adam quantrill

11,679 posts

272 months

Thursday 17th September 2009
quotequote all
Surely the botls are torqued up to what the threads can take without either snapping the bolts or stripping the threads?

I would say don't exceed the 60lbf then.

carob

3,585 posts

241 months

Friday 18th September 2009
quotequote all
60lbft without snapping.

My boy could put such a random figure in.

It is ok shouting figures from the top of your head, but they mean nothing if you dont take in to account the bolt material, the lube and also the loosenig proceedure, which should be taken in account if you drop a bk.

Rob