Exhaust troubles
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Exhaust troubles
Hi all,
SHY has always had a leak from the manifold / belmouth, which I thought I'd cured.
After a couple of days, the leak is back and the exhaust at the manifold joint can wobble from side to side. Is there any way to cure this? Why does it do it and would a tubular manifold chopped down exhaust be a more reliable solution ? If so, who does tubular manifolds at a reasonable price / quality ?
SHY has always had a leak from the manifold / belmouth, which I thought I'd cured.
After a couple of days, the leak is back and the exhaust at the manifold joint can wobble from side to side. Is there any way to cure this? Why does it do it and would a tubular manifold chopped down exhaust be a more reliable solution ? If so, who does tubular manifolds at a reasonable price / quality ?
Ems & Jim
[img]http://homepage.ntlworld.com/jim_ashton/SHYMOG1.jpg[/img]
[img]http://homepage.ntlworld.com/jim_ashton/SHYMOG1.jpg[/img]
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My first Minor was the same.
As the exhaust wobbles, it wears the joint away at the 'loose' sides.
This makes it nearly impossible to correct.
You may need to change the manifold to get a better chance of putting it right
As the exhaust wobbles, it wears the joint away at the 'loose' sides.
This makes it nearly impossible to correct.
You may need to change the manifold to get a better chance of putting it right
Ray. MMOC#47368. Forum moderator.
Jan 06: The Minor SII Africa adventure: http://www.minor-detour.com
Oct 06: back from Dresden with my Trabant 601 Kombi
Jan 07: back from a month thru North Africa (via Timbuktu) in a S3 Landy
June 07 - back from Zwickau Trabi Treffen
Aug 07 & Aug 08 - back from the Lands End to Orkney in 71 pickup
Sept 2010 - finally gave up breaking down in a SII Landy...
where to break down next?
2013... managed to seize my 1275 just by driving it round the block
Jan 06: The Minor SII Africa adventure: http://www.minor-detour.com
Oct 06: back from Dresden with my Trabant 601 Kombi
Jan 07: back from a month thru North Africa (via Timbuktu) in a S3 Landy
June 07 - back from Zwickau Trabi Treffen
Aug 07 & Aug 08 - back from the Lands End to Orkney in 71 pickup
Sept 2010 - finally gave up breaking down in a SII Landy...
where to break down next?
2013... managed to seize my 1275 just by driving it round the block
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- Minor Legend
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Make sure you're using the two-piece cast clamp - the one with two bolts. The others are, frankly, rubbish.
If that still doesn't work, then try putting a piece of copper wire around the exhaust pipe, to eliminate any chance of movement or free-play.
Also, make sure that your steady bar is doing its job and that there isn't any excessive engine rocking.
If that still doesn't work, then try putting a piece of copper wire around the exhaust pipe, to eliminate any chance of movement or free-play.
Also, make sure that your steady bar is doing its job and that there isn't any excessive engine rocking.
Happy Minoring!
Phyllis ~ 1962 Morris Minor 4 Door Deluxe
Black coachwork with Red Duo-Tone Upholstery
Phyllis ~ 1962 Morris Minor 4 Door Deluxe
Black coachwork with Red Duo-Tone Upholstery
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- Minor Legend
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The manifold/downpipe join is notorious for a poor fit. I have found the problem can be cured with a bit of work with a electric drill and spherical grinding head on the downpipe flange. The manifold needs removing too to file away the casting imperfections and soot/exhaust paste. Make sure too that you use a NEW two bolt clamp. Old ones collect a fair bit of crud inside the deep crease and prevent the joint from tightening.
Refitting the whole lot can be a true three handed job but I found it helpfull to wedge a long piece of 2x1 timber through the bulkhead hole and maneuver the exhaust into a good position with my shoulder while I tightened the clamp with both hands
Refitting the whole lot can be a true three handed job but I found it helpfull to wedge a long piece of 2x1 timber through the bulkhead hole and maneuver the exhaust into a good position with my shoulder while I tightened the clamp with both hands
Older and more confused than I could ever imagine possible.
Make sure you have the correct diameter clamp, some also have the diameter one side larger than the other and can be fitted the wrong way round. It can help, when assembling, to hold the pipe carefully in place with a jack, as long as the system is not forced to line up. Imho most exhaust troubles are caused by the latter.
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- Minor Fan
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On my a35 there is a clamp fitted to a bellhousing bolt that clamps round the exhaust to keep it in line with the block,therefore eliminating the rocking motion between the two halves of the joint. I use the exhaust paste that has fibres in it ,if unavailable ,i use ordinary paste &mix a few f/glass fibres in it to make it bond well and bridge any small gaps . There are ,I think pros and cons for using the cast clamp .I prefer the pressed steel one ,because it is deeper ,&allows more surface area between the clamp and the pipe to get paste in .
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Do you know if that is a standard item?On my a35 there is a clamp fitted to a bellhousing bolt that clamps round the exhaust to keep it in line with the block
I found one of those secondhand and fitted it to my first Minor (you'll try anything after having 2 exhausts snap off at the manifold etc..)
If it's a standard item then maybe they can be bought from somewhere - I'd quite like to have one for peace of mind.
- MrA.Series
- Minor Fan
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Eversince replacing my exhaust clamp (after the old one rusted through), The exhuast pipe (not the box - it's the pipe after the box that is hitting on the cross bar) knockes agaist the underside of the car whenever she 'fires up' (when you starts her). Is this okay?
Boris: 1968 2-Door Saloon
[img]http://home.ripway.com/2004-2/76758/Morris%20Minor/BorisThumbnail.JPG[/img]
(In background is Pixie: 1968 2-Door Saloon)
[img]http://home.ripway.com/2004-2/76758/Morris%20Minor/BorisThumbnail.JPG[/img]
(In background is Pixie: 1968 2-Door Saloon)
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- Minor Fan
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Ray,I'm told it is fitted to later than '61 vehicles . I t was standard on mine . I think midgets had them also. Its easy enough to make using a piece of 1"flat drilled to take b/housing bolt (quite close to one end) put in vice and twist it along its length 90 deg. determine the distance to centre of pipe, mark hole either side of dia of pipe use standard exhaust clamp u-bolt and nuts to clamp it up .
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- Minor Fan
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Just a quick note to say you should seal the exhaust up as soon as poss, (as I wil with ours, exact same problem); running it with a blow burns the valves...
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- Minor Addict
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as gareth mentioned get a cast clamp, but also the correct length rubbers x2 in good condition. very important to support the exhaust and help take the strain of the clamp. when you fit a pipe place a piece of wood between the pipe and the floor where the pipe disappears from the engine bay. line it all up using wood as support with rear straps fitted. make sure its firm and seated well then fit manifold clamp with paste. dont forget throttle return spring fitting. its got to sit well before doing up.
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- Minor Legend
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But make sure you ask for the two-bolt cast clamp. It is likely not the same as the Mini - I had a conversation at my local place that the ones they fit to Minis (and Metros) are single-piece ones and the guy reckoned they were rubbish. He was impressed with the quality of the cast one I took along.
Happy Minoring!
Phyllis ~ 1962 Morris Minor 4 Door Deluxe
Black coachwork with Red Duo-Tone Upholstery
Phyllis ~ 1962 Morris Minor 4 Door Deluxe
Black coachwork with Red Duo-Tone Upholstery