a/c exhaust brackets - help!

[Darrell]

I think it's a resinanse associated problem.

My old XS11 used to break it's exhaust on a regular basis.
I then lost-it and got a complete new system, after market jobby and strangely didn't resinate.

On a bike you can feel and hear the resinance better than in a fiat I guess.

The resinance could be felt as a very high frequency vibration of the exhaust, and it only seemed to happen at 5000 rpm which. If you put your foot on the exhaust you could feel it.

How can I describe the vibration.... a but like an orbital sander?

As for the head stud and nut issue, I agree. But I'll not be calling anyone a nut-head to their face

Another thing, does locktite handle head temperatures (for securing studs)

[Rusty's Uncle]

Darrell , forget the bodges  you can get a helicoil kit for less than £15 . Another string to your bow for all of those forthcoming Fiat adventures 
You could go with bolts but I would personally go for studs if you are thinking long term  [-/

[Darrell]

never mind, booked it in to get a hellicoil see how it goes

[Darrell]

126fan.sk  [-/

Think this will stop shake-off

[ypsilon_lancar]

I got a pair of those, didnt know what they were for so just stuck them on!

[bis13]

ive refitted my twin exit exhaust that was meant for the 500 so have fitted two manifolds as spacers (around 7mm) and made up brackets myself so far it hasnt fell off so fingers crossed!
 

[Darrell]

I have to confess that my exhaust is behaving, I think running at over 70 is what caused my issue, and found that the exhaust brackets were not 100% clamping the exhaust silencer.

Gas axe and bend of brackets to make a better snug fit so crossing fingers too [-/

Helicoil certainly sorted out the thread issue! [-/

Bought the kit and thinking of getting the M6 kit too

[eben80]

126fan.sk  [-/

Think this will stop shake-off

Sorry for resurrecting an old thread but how do you mount these? I have a pair but I can't see where they should be fitted?

[Eklipze3k]

Where the exhaust joins the manifold, on the manifold side between the bolts. It's been a while but I'm 99% sure that's where they go

[eben80]

  I think I have an idea.... on the manifold side underneath the heads of the bolts?
Does someone have a picture?

[Kipster]

My cylinder head has a sheared off bolt in the rear side, it is not leaking at the moment, but will need to be sorted. I think some clown has bonded it into the head, i tried to remove it but the head of the bolt sheared off leaving a stump not long enough to fit a nut. You should have seen the botch behind there, even the manifold had a piece hacksawed off to get it to fit  .
I guess the head will have to come off soon. does anyone know how to remove a bonded stump?

Interesting thread this, i also have had a broken exhaust bracket, but now i know why.

[Rusty's Uncle]

Those bolts into the head can "naturaly" bond / corrode into the head if they have been in place for many years. There have been so many cylinder heads bodged & ruined.
If you have enough stud to get a not on then then if you (or someone) can arc weld it over the top so you can still get a spanner on it. The intense local heat from the weld will help to free the stud up then you might be able to wind it out,
You can also get special stud remover tools that will fit a socket wrench.
Avoid the "easy-out" stud extractors like the plague as they will almost certainly shear off leaving you much worse off than when you started.
But if a stud is sheared flush to the surface then the best way is to drill it out very carefully. Centre punch the dead centre of the stud end then drill in with something like a 5mm drill (on an M8 stud). If the drill runs off a little at the start you should be able to recentralise it by angleing the drill. The correct tapping size drill for M8 is 6.8mms but if you can then go in with a 6.5mms drill you may be able to pick out the remains of the stud with a small screwdriver.

[ChrisRLewis]

126fan.sk  [-/

Think this will stop shake-off

Sorry for resurrecting an old thread but how do you mount these? I have a pair but I can't see where they should be fitted?

Think I may be stating the obvious here, but I believe that these are tab washers? and if so they require to be bent along the flat of the nut.