The NORD-LOCK bolt securing system
Discussion
In an earlier discussion about exhaust gaskets 350Matt mentioned the NORD-LOCK bolt securing system. I don't know about you guys but my exhaust manifold bolts kept working loose all the time. I had to tighten them every 3 weeks or so, till eventualy the gaskets were gone. Anyway, i read this comment about the NORD-LOCK bolt securing system and thought this may be the solution for the bolts coming loose. (thanks 350Matt)
I'm now lookking for someone that will sell me enough 3/8 NORD-LOCK's to install the new gaskets on my car. I have contacted the supplier over here but they only sell them 200 at the time.
Anyone ?
Fred
I'm now lookking for someone that will sell me enough 3/8 NORD-LOCK's to install the new gaskets on my car. I have contacted the supplier over here but they only sell them 200 at the time.
Anyone ?
Fred
Fred, I thought the same and was going to buy a few hundred and sell them on the v8 enhancements site, but if you phone them up, the 3/8" size required for the manifolds are sold in quantities of 25, for around £8, just make sure you ask for the ones with the 16mm outside diameter, as they do a larger one which may not fit.
shpub said:
Errr what's wrong with spring washers? I use them and haven't had any problems...
Considering the fact that it's a bit of a pig to change the gaskets and install new ARP bolts, i figured i wanna make this installation bulletproof. Like so many i had the "selfloosening" standard bolts with spring washers !! I'm more than willing to pay a bit extra to make sure they don't loosen themself this time. I mean it's not the spaceshuttle, but i prefer my bolts to stay were they are and not loosening themself.Fred
The cam lock washers are probably more durable in the long term... As with anything incorrect application can cause problems. Just as the spring lock washers can lose the tensile 'spring' the cam locks might become ground down? Either incorrectly torqued will fail to lock, getting the torque right is more than likely the crux of these issues 
Like Steve, I have no problem with spring locks, I just use new ones each time, having bought a large bag which will last my lifetime since they also fit on the manifold/y-piece clamps as well.
Dave
Like Steve, I have no problem with spring locks, I just use new ones each time, having bought a large bag which will last my lifetime since they also fit on the manifold/y-piece clamps as well.
Dave
GreenV8S said:
Well yes, but can you imagine trying to get those contraptions on and off with the access we have?
Must admit after posting - I thought those little circlips would be a bugger to get on and off.Funnily enough I actually use the serated washers, very similar to the nord-lock ones on my headers. They seem to work fine.
Are you certain its the bolts coming loose or is that the gaskets are compressing in use causing this problem,no form of locking is gonna get round that one,possibly not everyones problem but worth concidering if using the wrong type of gasket materials for these cars,i have Reinz gaskets and after the initial nippin up after a couple of hundred miles they have not needed touching since,just a heads upmust admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.
must admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.That Daddy said:
Are you certain its the bolts coming loose or is that the gaskets are compressing in use causing this problem,no form of locking is gonna get round that one,possibly not everyones problem but worth concidering if using the wrong type of gasket materials for these cars,i have Reinz gaskets and after the initial nippin up after a couple of hundred miles they have not needed touching since,just a heads upmust admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.
where do you get the Reinz gaskets from?must admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.That Daddy said:
must admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.
Are you talking about those thin ones made from steel sheet with an embossed ring round each port, or the metal composite ones? I think the advantage of the composite ones is that they *do* have some give to them so they can cope with a certain amount of expansion - but they do need to be clamped tight enough for this to work.GreenV8S said:
That Daddy said:
must admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.
Are you talking about those thin ones made from steel sheet with an embossed ring round each port, or the metal composite ones? I think the advantage of the composite ones is that they *do* have some give to them so they can cope with a certain amount of expansion - but they do need to be clamped tight enough for this to work.That Daddy said:
Are you certain its the bolts coming loose or is that the gaskets are compressing in use causing this problem,no form of locking is gonna get round that one,possibly not everyones problem but worth concidering if using the wrong type of gasket materials for these cars,i have Reinz gaskets and after the initial nippin up after a couple of hundred miles they have not needed touching since,just a heads upmust admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.
I have definitely suffered from compressing gaskets recently, gives the impression that the bolts are loosening but it is the gasket compressing in use. Once that happens it is only a matter of time before the exhaust gases start to break up the gasket.must admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.Andy
Else said:
That Daddy said:
Are you certain its the bolts coming loose or is that the gaskets are compressing in use causing this problem,no form of locking is gonna get round that one,possibly not everyones problem but worth concidering if using the wrong type of gasket materials for these cars,i have Reinz gaskets and after the initial nippin up after a couple of hundred miles they have not needed touching since,just a heads upmust admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.
I have definitely suffered from compressing gaskets recently, gives the impression that the bolts are loosening but it is the gasket compressing in use. Once that happens it is only a matter of time before the exhaust gases start to break up the gasket.must admit i think the steel type suit this job better(mine are not however)and would be less prone to compression.Andy
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