3" Miltek clipping the rear driveshaft.

[Ian Simmonds]

Under load, the exhaust and inner left rear driveshaft are having a party. The clearance is pretty minimal, and the middle donuts are quite slack. Now do I need tighter donuts, and risk making the gap smaller, or do I need to make the gap bigger?... It's not nice knocking away like that....

Kind regards
Ian

[jade]

Under load, the exhaust and inner left rear driveshaft are having a party. The clearance is pretty minimal, and the middle donuts are quite slack. Now do I need tighter donuts, and risk making the gap smaller, or do I need to make the gap bigger?... It's not nice knocking away like that....

Kind regards
Ian

You could try dropping the tail pipe 10mm that sorted mine

[Ian Simmonds]

I popped a couple of thick washers under the rear mounts earlier, but thats probably less than 2 mm.... Okay, food for thought...

[jade]

I popped a couple of thick washers under the rear mounts earlier, but thats probably less than 2 mm.... Okay, food for thought...

My system is quite a firm fit does not move around much

[Ian Simmonds]

My system is quite a firm fit does not move around much

Yes, this is too, I wonder if its a combination of the exhaust and the diff movement... Hmm, will need to have a play on Thursday....

Any other thoughts folk?

[Christophski]

To fit mine I got longer back box bolts and put a bolt under the very rear bolt bits dropping the box a bit and replaced each rubber with poly donuts and pulled them tighter with zip tyes to hold the rest of the system higher... No catching anywhere or knocks.

[macspring]

What model, ur quattro or S2 Avant ?

Very dissatisfied with my Miltek's fit on my S2 Avant, system was bought about three years ago as part of a small group buy from a third party company.

It was like as if they, Miltek, knew they'd made them incorrectly and looked to still sell them off cheaper than normal to shift them, or maybe I've read too many conspiracy theories in my time.

Either way, not a great fit, but a great sound.

My tuppence.

[Ian Simmonds]

Well, dropped the back box hangers and it's quite a bit better, but still does it when its cold and under load, it's almost like the exhaust needs to be stopped from moving backwards and forwards rather than up and down...

[Christophski]

Poly hangers and Zip ties bud. Mine did it and that was the solution.

[Ian Simmonds]

Poly hangers and Zip ties bud. Mine did it and that was the solution.

Cheers Chris, where did you get the poly hangers from bud?

VBR
Ian

[andyg plym]

Well, dropped the back box hangers and it's quite a bit better, but still does it when its cold and under load, it's almost like the exhaust needs to be stopped from moving backwards and forwards rather than up and down...

daft as it may sound but are your engine mounts ok? maybe the whole engine is moving?

hmmm.....it never clipped anything on mine,and mine is lowered

[Christophski]

I used to get it hitting the floor too! I got the generic ones from Halfords but had to trim the edge on a section of the hanger to make it fit on the car I think... I then wrapped each one in a few zip ties to make them more rigid. Whilst I was doing this I had a jack pressing on the exhaust making it slightly higher so when I released the jack it would be even tighter and less likely to move.

I only got the hangers from Halfords cos they were on sale in the sale bin so were cheap otherwise I would have got them from Ebay or something. I think I just used the small round donut like ones... This fixed my exhaust issues completely and has been fine for around 2 years now.

Andy has a point too about your engine mounts. try pulling away with your hand on the gear stick and see how much it moves... I guess. im no expert on these things.

[Greg_S]

Im thinking of making an extra bracket that goes near the centre prop mount to try and minimise that movement aswell as beefing up the current rubbers

[jade]

Im thinking of making an extra bracket that goes near the centre prop mount to try and minimise that movement aswell as beefing up the current rubbers

I have a extra bracket at the prop shaft centre bearing I also have 2 flexes one at the header and one just before the rear shaft

[Ian Simmonds]

I'm beginning to think I'm barking up the wrong tree I've popped on a powerflex hanger and left it at its longest, which is about 4 inches, the exhaust is now a good inch clear of the inner flange of the driveshaft... Yet, dank-dank-dank.... Cold, its even faintly audible free wheeling, but a lot more noticeable under load. Bloomin' car, did I show it some money....