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?
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
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.
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.