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Hiya I'm after a bit of help. My 1098 moggy is about to get disc brakes and a few other modern safety additions like rear seatbelts etc. I also want it to be a bit nippier when pulling out of junctions and came across a mg metro 1275 cylinder head which is a common swap provided you make sure the valves don't hit. It was cheap so I've had it skimmed and inspected and it's a good one. So I then bought a metro inlet manifold and inch and half SU carb. Its should all bolt on nicely and I will tinker with different carb needles to get the best results. I'm planning on using the original exhaust manifold and decoupling the inlet with a grinder. But I have also put my hands on a twin outlet ital manifold. Its not a flange one it's got a flare. So I need to locate a twin Down pipe but I can't seem to find any. I want a mild steel one so I can weld a straight pipe onto as can't do stainless. There are loads of mini ones but they come off at a different angle so would need choppage. Hope someone can give me me a bit of a steer. Cheers Jed
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I looked at the twin pipe cast manifold but concluded that it would be struggle to get the pipes out and through the hole in the minor inner wing, I concluded it would be easier to get a mini LCB and chop that about.
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How about one from a Metro? Some of these had a cast iron manifold with twin down pipes.
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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Morris minor upgradesslater
@slater
Club Retro Rides Member 78
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You cant just bolt the 1275 head on your 1098cc The block will need pockets to clear the valves.
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Jan 14, 2024 17:45:18 GMT
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Apparently you can recess the inlet valves to avoid them hitting the block. Might be worth asking on the MMOC forum. At least one Minor specialist does a downpipe for the Ital manifold.
From what I've seen on the forums, the carb needle you need is an AAA
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1953 Minor (Long term project)
PT Cruiser
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Jan 14, 2024 18:15:48 GMT
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Hi all thanks for your input. The metro exhaust or even the 1.3 mini one fits the manifold but the pipes come off at the wrong angle. I might tinker with one though and see if I can cut and weld it and join on to a bigger exhaust. I’m going to put the head on dry and see how we go. If the valves don’t catch with no gasket and no tapped clearance I should be ok. If they do then I will have the seats recessed. I’m using the standard cam. Thanks for the needle advice. Reading the vizard book and it’s a good help. When I get chance to start the work I will share pics
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