rst in breaking

iTrader: (2)

can these be reused? thanks

GARETH T

if you measured the stretch before and after yes,,,, if you havent is it worth the risk?

rst in breaking

iTrader: (2)

how would you have measured the stretch? as these came with some steel rods i brought so they are now useless?

GARETH T

you really gotta know the original length of the bolt

by mic'ing the bolt length now

XRT_si

iTrader: (2)

As above. ITs widely regarded they stretch i believe, as stated, is it worth risking?

Ginge !

just change em you pikey tight arse fooker

he gets a set of fardon steel rods for a long'un and he wants to reuse the bolts


btw you cant reuse the old gaskets when you rebuild either mate

Rick

Every time u tighten a bolt, it stretches - that is how it exerts pressure on what it's clamping. U can only stretch it so far, before u pass it's elastic limit, and it becomes a sloppier than a Chorlton st hooker.

Mark V8

iTrader: (2)

If ARP bolts are rated at 190,000 psi then I would have thought that re-using them would be no problem, it's the pikey OEM manufacturers that like "stretch" bolts and you can only use them once as they pass their elastic limit during the initial torque. If you never exceed the elastic limit you should be able to re-use them many times. All IMHO of course

Mark

Garage19

I'm with mark on this one.

GARETH T

the bolt legth does change,, this means some parts of the bolts have gone past there yield point!

if you didnt measure before and after,, i wouldnt use personal

Anonymous

I reuse them all the time TBH, and i dont normally bother to measure them on instalation, as the torque figures given are well under the point of elasticty anyway, so i dont view it as an issue.

Gareth is kind of right though, if they were overtightened (by quite a bit not just a couple of lbft) before, and you then undo them now and tighten them again then potentially you will go too far past that point of elascticity.