MK1 Leon GT2x Build - thats it folks

[G12MO X]

guys as much as I appreciate the banter, its not really relevant to the thread, thank you

anyway tightened the bolt on the car that I could get to, and as soon as I do, it pretty much works itself loose again!

boost feel really jerky now and a definite drop in power thats for sure!

Wednesday can't come soon enough

I had the same problem with my old backdraft kit(same responce "your the only one"), I ended up getting some proper studs, nuts and washers that you tap over the nut and manafold or downpipe (they look like normal washers with two tags) from Owen developments who told me they have seen the same problem on evo etc, after fitting they never moved again. I did try everything and this is the only thing that worked for me.

 

[jamiebennett81]

thing is though, its a product which you pay quite a lot of money for, and it comes loose, so making part of that kit not really fit for use, causing further unnecessary

should the kit be supplied with better nuts (and washers)?

 

[ibizacupra]

are they coming undone or simply stretching with expansion. The tab washer approach would stop the undoing (if) thats whats happening.
Stainless will be expanding a lot more than the cast manifolds.

 

[jamiebennett81]

are they coming undone or simply stretching with expansion. The tab washer approach would stop the undoing (if) thats whats happening.
Stainless will be expanding a lot more than the cast manifolds.

actually coming undone, as in the nut you can unscrew with your fingers its that loose

 

[ChrisCurzon]

yep same here undos and can turn with finger, and its that hard to do that back 1 is such a pain lol.

 

[ibizacupra]

but as in did it rotate undone, or is not tight from stretch.. you get my drift?

 

[jamiebennett81]

but as in did it rotate undone, or is not tight from stretch.. you get my drift?

rotate undone from how it felt when doing it back up....the nut did not seem to be "loose" as in too big for the bolt if I understand you right

 

[ibizacupra]

rotate undone from how it felt when doing it back up....the nut did not seem to be "loose" as in too big for the bolt if I understand you right

How can you tell?
if stretched you could obviously tighten it up again.... to the point its breaks.

tab washers eliminate the undo by rotation bit. Just because you can tighten it does'nt mean it rotated to loosen. If the stud/bolt shank is stretching then it will become loose also.

Need to qualtify which is happening

 

[Willie]

Bill it would be very difficult to work out where the problem stems from until some sort of locking washer is fitted to eliminate the vibration.
If the bolts do stretch and loosen the torque the vibration will do the rest anyway.

If your having to retorque these bolts they should really be replaced as they will have yeilded due to torquing, probably not what you want to hear.
But as far as the 'fitters' were concerned they should have fitted some sort of vibration proof washer/flanged bolt, no excuse!!!

 

[ibizacupra]

Bill it would be very difficult to work out where the problem stems from until some sort of locking washer is fitted to eliminate the vibration.
If the bolts do stretch and loosen the torque the vibration will do the rest anyway.

If your having to retorque these bolts they should really be replaced as they will have yeilded due to torquing, probably not what you want to hear.
But as far as the 'fitters' were concerned they should have fitted some sort of vibration proof washer/flanged bolt, no excuse!!!

K-Nuts or other steel-loc nuts dont vibrate loose. They are locking nuts.

you secure them first. tab washers/wire lock, or mark them etc,... so to determin whats happening.

What fitment is as std?
how are these fixings different on these examples. (asking)

 

[Willie]

K-Nuts or other steel-loc nuts dont vibrate loose. They are locking nuts.

you secure them first. tab washers/wire lock, or mark them etc,... so to determin whats happening.

What fitment is as std?
how are these fixings different on these examples. (asking)

Dunno Bill

 

[jamiebennett81]

How can you tell?
if stretched you could obviously tighten it up again.... to the point its breaks.

tab washers eliminate the undo by rotation bit. Just because you can tighten it does'nt mean it rotated to loosen. If the stud/bolt shank is stretching then it will become loose also.

Need to qualtify which is happening

confused.....

if I can tighten it, then how does it become loose, other than stretching and then being shook loose from the vibrations of the engine....

I presume it is not stretched, as tightening up is not breaking it....its just tightening and then working loose again.....

this is a pain to diagnose

But as far as the 'fitters' were concerned they should have fitted some sort of vibration proof washer/flanged bolt, no excuse!!!

or be supplied with these upon orginal purchase of the product to reduce issues like this?

 

[ibizacupra]

confused.....

if I can tighten it, then how does it become loose, other than stretching and then being shook loose from the vibrations of the engine....

I presume it is not stretched, as tightening up is not breaking it....its just tightening and then working loose again.....

this is a pain to diagnose



or be supplied with these upon orginal purchase of the product to reduce issues like this?

you will know stretch as it will be longer now.
you will know if loosened and turned if you mark it (centre punch a mark) and it rotates.

Wire lock them or locking tab them.. I saw a tab washer for these somewhere but I cant find it again

 

[jamiebennett81]

you will know stretch as it will be longer now.
you will know if loosened and turned if you mark it (centre punch a mark) and it rotates.

Wire lock them or locking tab them.. I saw a tab washer for these somewhere but I cant find it again

ok thanks

wont have time now and it will be in the garage by wed, so will have a look at the bolts when they come out to see what they are like

hopefully the new gasket, bolts and nuts will do the job as the manifold has already expanded and "settled" in I presume so a new set of bolts, washers and nuts will do the job.....i hope

 

[Willie]

confused.....

if I can tighten it, then how does it become loose, other than stretching and then being shook loose from the vibrations of the engine....

I presume it is not stretched, as tightening up is not breaking it....its just tightening and then working loose again.....

this is a pain to diagnose



or be supplied with these upon orginal purchase of the product to reduce issues like this?

These should have been supplied but still no excuse on the fitters side for not taking the initive and getting some thereselves and fitting these

 

[Willie]

ok thanks

wont have time now and it will be in the garage by wed, so will have a look at the bolts when they come out to see what they are like

hopefully the new gasket, bolts and nuts will do the job as the manifold has already expanded and "settled" in I presume so a new set of bolts, washers and nuts will do the job.....i hope

Jamie, don't want to be the bearer of bad news but the manifold and bolts will always expend and shrink during heating and cooling. If the expanding is not matched then..................DOH!!

 

[jamiebennett81]

These should have been supplied but still no excuse on the fitters side for not taking the initive and getting some thereselves and fitting these

I know mate

its a real pain driving with hardly letting the turbo spool

its just painful getting this far and not even on full power yet......at what point this should have all been done initially I will let you work that one out, but I dont want to start pointing fingers again......

 

[Willie]

No need to point fingers dude, it's very obvious who

 

[jamiebennett81]

Jamie, don't want to be the bearer of bad news but the manifold and bolts will always expend and shrink during heating and cooling. If the expanding is not matched then..................DOH!!

well I guess in my logic then the "initial" part of the expansion has happened, which has stretched the bolts and caused the issue, and hopefully a new set should resolve it

the expansion and shrinking will still happen, but hopefully the worst of it is now out of the way and the new bolts wont be as effected much or will at least stay tight....I hope

i dunno all a bit fed up of it and lost with it at the mo to be honest......

 

[ibizacupra]

erm... it does'nt work like that.
As said heat expands and will continue to.
If the bolts have stretched then they come out looking a little wasted as they have stretched

Can you get some 12:9 grade bolts for this?