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Scraping Exhaust


Guest jonnyc
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Guest jonnyc

Didn't know what section to put this in but here goes, does anyone have the burden of hearing their exhaust scrape! I have a mk4 cabby with full scorpion system and when driving over humps or even dips in the road the exhaust scrapes and not its taking the piss! The scorpion backbox is quite a large one compared to the standard backbox, it's scraping where the pipe bends under the swing arm and on the actual box, oh btw my car is lowered 30mm.

 

Any solutions? Was thinkin of getting a custom box made

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Guest steelcabby

get new rubbers, and then jack the car up, undo the bolts either side of the ben and jack the bend up til its just abit away from the wishbone. then tighten it up. when you jack the car down it should sit alot higher up. also what size wheels do you have on your car??

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Guest jonnyc
get new rubbers, and then jack the car up, undo the bolts either side of the ben and jack the bend up til its just abit away from the wishbone. then tighten it up. when you jack the car down it should sit alot higher up. also what size wheels do you have on your car??

 

 

The rubber mounts are fine, looking at the the design of the scorpion box its a lont longer and heavier than any other performance box i have seen for this car i will take a piccy to show, ye also my wheels thought if i had larger ones would be higher, i'm running xr3i lattice style 14" alloys cause i like the lowrider look just not the scrape noise lol!

Undo bolts either side of the bend? u mean where the exhaust clamp goes to join the rear box? If jacking the bend to actually bend it will the box still join onto the middle section pipe after cause i might get squashed etc...

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Guest steelcabby

looking at thos pics, that box is far too long,

 

like said, jack the car up at the back passenger side, put on axle stand, make sure the back wheel is high enough to be off the ground.

 

now undo the front bolts near the down pipe, get the jack and jack up the bend at the back underneath the suspension arm til its just off the arm.

 

then go to the front and do up the bolts and it should stay there. although because the back box is so long it will want to twist back due to where the bend meets the back box and may slip back over time, so i should think you need to bend the bracket that slots into the rubber down abit to hold it better, get a hammer or moulgrips to it. it should be alot better then. but as you have lowered it on 14" wheels you may always have a problem, but you never know it might just work

Edited by steelcabby
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Guest steelcabby

i had the same problem with my 2.5 mongoose system that went on my cabby, it all had to be jacked and twisted to fit tight up out the ay and i was on 17" lowered 40mm.

 

i even had to spot weld the joins to stop it slipping down again, but worked out really well

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ooohhh I have often wondered why I sometimes see aftermarket exhausts sticking out the back at an angle....it would drive me mad if after twisting the the pipe was not dead straight out the back.....cant you chop a couple of inches out anywhere?

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Guest steelcabby

should still be dead striaght after twisting it, but then again it shouldn't go that far out of align. if the pipe joined the back box on a straight bit of pipe instead of on the bend it would be alot better. i don't understand why the back box is so long, does it not have a centre box?? is it a powerflow exhaust??

 

but i know what you mean, mainly pugs and saxos that have that kind of effect...i always see them sticking out at funny angles....lol

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I had the same problem and yeah,the downpipe needs undoing and re-setting then doing up again.

 

Pain in the bum and I used to cringe when I heard it scrape but it`s all ok now.

 

Im only on 15"s and car is lowered so used to happen all the time lol.

 

Good luck mate.

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