willay
Moderator Organiser: South East, National Events Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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Wasnt sure if this is for help or general.
The reason why I'm asking is because my car sits pretty low, and sadly so does the cat-back magnex system I have on my corsa.
What this results in is lots of scrapes, and the other week my car was stuck in a kwit-fit ramp (they had to get a couple of lads to lift my car up by the back arches to get it off... )
Now, I think this has also caused my centre section to fuck itself due to it sounding rather rattly under there and just a general shite horrible sound! I have managed to get Magnex to send me a new centre section under warrenty (with rimstyles help - but havent recieved it yet) however it wont fix my problem and a few people have commented on how low the box sits 
Lately my system has also pulled itself apart, so now it sounds like I drive round a world war two tank around which is cool for about a 5th of a second.
Now from my point of view I have three options:
a) live with it and destory centre sectiosn
b) raise the car abit (gay)
c) find a smaller box
I'd like to go option C personally, but I'd be interested to know if anyoen else has the same problem, and if so what are they using? 
Essay.
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Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
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Yeah i do , all the same symptoms as you, having to get people to lift the arches to get it on the ramp
I only scrape it if i go over speed bumps taht are little boxes, if i go ove it with one wheel on one box and one wheel on the other it doesnt scrape >
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willay
Moderator Organiser: South East, National Events Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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Rob what system are you running underneath?
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Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
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Erm... Piper de-cat and centre section, powerflow backbox.
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dna23
Member
Registered: 1st Nov 04
Location: Northamptonshire
User status: Offline
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have u tried using different exhaust mounts which are shorter and raise it up slightly?
also, the scraping can sometimes be the exhaust knocking on your rear axle to? this can often be solved by using a smaller clamp or one which isn't as thick (like a jubilee clip)
Mine scrapes but only on speed bumps if i go fast - so i just drive slowly and go up one wheel at a time
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willay
Moderator Organiser: South East, National Events Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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its the centre section that scrapes ( know by position of my car). When we had it up on the ramps we punched the can about abit and you could see that it wasnt hitting the heat shield or anything. Just crap inside rattling about.
I'm not sure how low my car is, but the coilovers are pretttttty low with the 15s
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dna23
Member
Registered: 1st Nov 04
Location: Northamptonshire
User status: Offline
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May be worth trying shorter exhaust mounts to raise it and also stiffer one's so it doesn't bounce as much...
Alternatively have you considered running a straight through? that shouldn't scrape at all or as you said having a smaller centre section made up.
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willay
Moderator Organiser: South East, National Events Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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straight through? All I have at the moment is a centre section and a backbox and its loud enough Need that back pressure!!
Going to bother some exhaust/tyre monkeys after work so we'll see what they have
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bradgsi
Member
Registered: 12th Jun 06
Location: Leicester,E.Mids Drives: corsa GSi 16V
User status: Offline
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i Have a straight through and i only catch on speed bumps and things
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Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
User status: Offline
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Powerflow is the way forward, I find exhausts bought off the shelf to be a pain in the dingo, always rattling and banging.
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dna23
Member
Registered: 1st Nov 04
Location: Northamptonshire
User status: Offline
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May aswell try those stiffer mounts for a few quid it can't hurt!
http://www.powerflex.co.uk/exhaust.asp
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3CorsaMeal
Member
Registered: 11th Apr 02
User status: Offline
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make the suspension more practical
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Adam-D
Member
Registered: 11th May 02
Location: Cheshire
User status: Offline
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stu scrapes his
60mm on 14's
he goes over speed bump at a angle front left first
i cliped mine mine was 60mm on 15's with 50 profiles
both cars had/have scorpian ful systems
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jr
Member
Registered: 20th May 02
Location: Kent
User status: Offline
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magnex boxes are massive though, we ripped fads off on a cat's eye on the 127
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willay
Moderator Organiser: South East, National Events Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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thats what i wanted to hear, and to think it was fucking fad who reccomended magnex to me
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jr
Member
Registered: 20th May 02
Location: Kent
User status: Offline
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There brilliant systems, just massive though
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willay
Moderator Organiser: South East, National Events Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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what do you suggest jr... I could get the centre section custom made which will mean i'll have.... a magnex backbox
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jr
Member
Registered: 20th May 02
Location: Kent
User status: Offline
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i would raise the centre box up with some better mounts personally
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willay
Moderator Organiser: South East, National Events Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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looking at the powerflex jobbies tbh.
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bigrabbelfast
Member
Registered: 18th Mar 06
Location: BELFAST N.I
User status: Offline
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im running my fk coilovers on the second last thread with a powerflow straight through centre it only scuffs a few extra tall ramps round work
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3CorsaMeal
Member
Registered: 11th Apr 02
User status: Offline
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my mongoose box scrapes my car is only 40mm lower, mongoose boxes are like dustbins 
thought they had given me a skyline exhaust at first
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marklawton
Member
Registered: 24th Apr 05
Location: Pensby, Wirral Drives:Golf mk4 GTI
User status: Offline
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ive got a magnex cat back system on mine, mine scrapes must speedbumps no matter how slow i go, ive ripped one of the hagers that holds the middle box up,

need it to get welded back on or buy a new middle section
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loo_goblin
Member
Registered: 14th Jul 04
Location: Horsham, West Sussex
User status: Offline
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u got standard centre section that sits low as, then on my coilover steelie combo it aint good
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Reedy
Member
Registered: 11th Apr 04
Location: Hammersmith
User status: Offline
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it must be a magnex thing. My centre section scrapes. But then i went under and got out some trusty cable ties and done the job but i still get scrapes over one type of bump( try to avoid at all costs ).
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jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
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my centre section is fine but my manifold scrapes sometimes
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