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Jan 18, 2007 15:27:13 GMT
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Preparing the Merc for its MOT, it has a leaking downpipe at the gasket. We all know what a pig exhausts are, and to be honest I'd rather daub some zorst putty on it rather than mess about with rusted bolts shearing, etc. Will the MOT man kick up a stink? Or is exhaust putty / bandages MOT-friendly?
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Jan 18, 2007 15:42:03 GMT
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As long as it doesn't leak, I think it's okay. I've got tests on cars with bodged up pipes, including a gun-gum bandaged back box.
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1962 Datsun Bluebird Estate - 1971 Datsun 510 SSS - 1976 Datsun 710 SSS - 1981 Dodge van - 1985 Nissan Cherry Europe GTi - 1988 Nissan Prairie - 1990 Hyundai Pony Pickup - 1992 Mazda MX5
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Mr S
Posted a lot
10-4 Good buddy.
Posts: 2,654
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Jan 18, 2007 15:52:24 GMT
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My MOT station didn't pass mine with the gunge on.... Said it wasn't an MOT standard repair! lol
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Suzuki GSXR1000 K2 BMW R1150GS BMW K1200RS Chevy K5 Blazer Chevy Suburban LT Jaguar XKR
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Jan 18, 2007 15:53:43 GMT
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Putty isn't too good near the engine where the exhaust gases are still hot, much more durable on back boxes.
If you use it, DON'T thrash the engine until you've had the MoT or you'll probably blow all the Gun Gum out!
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Jan 18, 2007 18:07:51 GMT
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Cheers chaps. I'll look at the bolts and see if they're of the shearing-off, rusty chocolate variety (I fear so). If it looks like I'll have a mare getting the thing unbolted I'll have to try and bodge it I suppose I could always make a "heat shield" to mask the bodgery ;D
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Odin
Posted a lot
Posts: 1,406
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Jan 18, 2007 18:49:50 GMT
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I've got a years ticket with a fair sized hole caked in putty no problem.
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lebowski
Part of things
Hillman Avenger, Clan Clover
Posts: 476
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Jan 18, 2007 19:08:25 GMT
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My Clan exhaust has four bean tins with healthy dollops of Hermetite on it and it passed the MOT fine.
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spacekadett
Part of things
F*cking take that Hans Brrix!!
Posts: 818
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Jan 18, 2007 21:15:44 GMT
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The MOT book says it's only a fail if it's a 'signifcant' leak,a little one only a pass and advise. Other than that as long as it's secure you can have as much paste and bean cans as you like Like the bloke who took my refresher course said 'MOT is minimum standard to be on the road'!!
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Mechanic's rule #1... If the car works, anything left on the floor after you finished wasn't needed in the first place
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Jan 18, 2007 21:23:07 GMT
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My MOT man put some on so I could get a pass!
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B-8-D
Posted a lot
down to one car!!
Posts: 4,038
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as long as there is no "significant leak" theres fec all they can do apart from "advise" ... si
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Last Edit: Jan 19, 2007 0:39:53 GMT by B-8-D
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st182
Part of things
'yota man
Posts: 585
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For reference- recent tests on the micra test bed, has revealed the following results so far. Test carried out on rotten joint on flexi coupling: Putty on its own lasted a week. Putty with can round lasted about 6 weeks. Currently on putty, bandage, foil, bean can and 2 clamps cos it snapped in half. Will let y'all know how long that lasts (unless i managed to get it replaced before it fails again)
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Dan '93 JZA80 '79 TA40 '99 SCP10
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Bioshock
Posted a lot
It aint hip to be square.
Posts: 1,861
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If it don't leak-They can't fail it
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Almera GTI = ugly bird who turns out to be great in the sack = Win
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Nathan
Club Retro Rides Member
Posts: 5,626
Club RR Member Number: 1
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Exhaust putty and the MOT manNathan
@bgtmidget7476
Club Retro Rides Member 1
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I did this a few years back but to stop the gum from coming off I put Manifold wrap over the GUM, job sorted and sealed.
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mercmad
Posted a lot
Flush Hard,it's a long way to McDonalds.
Posts: 1,740
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Jan 19, 2007 11:12:31 GMT
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Split the front pipe off back by the trans,then undo the manifold off the head.you can drop the whole lot out the bottom and undo the bolts( 2 of them ) on the bench/floor /whereever. An oxytorch is the best deal for manifold bolts. When reinstalling the parts,Use high temp silicone on the head surface and the flange,it will outlast the car!. it doesn't go hard and if you wait for a day or so for it to set up,it will be perfect seal. I use it all the time on muffler joints too as it allows the pipes to slide together easily.If theres a hole in the muffler i just smear it over the hole,leave it for a few hours and the hole is sealled until I can afford a new one. By the way,never get gun gum or any other muffler seal in your eyes! it burns like hell.
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Many years ago I changed my driving style to cope with rising fuel prices; I have now reached the stage where I am contemplating keeping my eyes shut in order to lower wind resistance.
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