Torque setting - rear dampers

[Dyrill]

What torque setting should be used for the rear dampers please- top hex bolt and bottom 3/4 bolt? Thanks.

 

Supersport 1.8 VVC

[myothercarsa2cv]

Not completely sure, but the build manual you can download from caterham.co.uk is an invaluable source of such information.

 

John

_________________________

 

Bugsy: '82 2cv6 (Back on the road!!! 😬)

Talloulah: '08 1.6K Classic (Grubby )

[Dyrill]

Thanks John - didnt know there was such a thing! Learn something every day.

 

Supersport 1.8 VVC

[John Vine]

In case you can't find the Assembly Guide, it's 54Nm top and bottom.

 

JV

[Dyrill]

Thanks.

 

Supersport 1.8 VVC

[pburt]

The top hex bolt appears to be 3/8" Imperial (as confirmed in other threads here). Does anyone know where I can obtain a hex socket (1/2" drive) of such a size? I've searched numerous catalogues and on-line, and drawn a blank so far

 

Peter Burt

[Normans_Ghost]

Peter, I think the 3/8" is the shank size not the hex nut size. Aren't thay 3/4 AF?

 

^{Norman Verona, 1989 BDR 220bhp, Reg: B16BDR, Mem No 2166, the full story here}

You and your seven toThe French Blatting Company Limited

[Englishmaninwales]

In case you can't find the Assembly Guide, it's 54Nm top and bottom.

 

Hmmm...My Caterham Owner's Manual states 60 lbft f(78 NM) or the upper and lower damper mount, 1994 dedion.

[pburt]

Nverona

No, I think the hex size is 3/8" - having tried it, it's bigger than an 8MM hex but smaller than a 10mm, therefore something around 9mm which is, I think, 3/8" imperial. But where do I buy one *confused*

 

Peter Burt

[Paul Deslandes]

They're 1/2" imperial bolts, caphead at the top and standard hex headed bolts at the bottom. Use an angle grinder to cut off a couple of inches from a 3/8 Allen key and push it into a 3/8 socket. Or if you search the recent archive this was covered within the last few weeks. Torque is 60lbft in old money.

 

 

[John Vine]

My Caterham Owner's Manual states 60 lbft f(78 NM) or the upper and lower damper mount, 1994 dedion.

That's interesting. I was quoting from the K-series DD Assembly Guide PDF (where it gives 55Nm for the upper mount, but omits a value for the lower mount). My R400 Duratec Assembly Guide gives pretty much the same values -- 54Nm top and bottom. Perhaps CC have reduced the recommended torques since the mid-90s?

 

JV

[Paul Deslandes]

Could be. Mine's a '95 Vx deDion car. I doubt it needs to be that tight as the bolts only hold the shock in place and there's virtually no rotation of the joint. Its just in shear in both cases.

 

 

[pburt]

Paul

Thanks for mentioning the other threads re hex bits and cut down allens. I had been searching on 1/2" drive which would explain why nothing came up - all the ready-made hex bits seem to be on 3/8" drive. There are clearly some other imperial hex bolts on the car so I may invest in a "set-on-a-rail"

Cheers

 

Peter Burt

[Englishmaninwales]

John

I'll dig out my assembly guide and see if it agrees with the owners manual with regard to the torque. Looks like they have reduced the value on later cars.

 

Malcolm