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Has anyone ever had any success with building their own exhaust manifold?
I've got a 'custom made' 4 branch & to put it polite it's BOBBINS!
So thinking of cutting the flanges off it & starting again, but wondering if anyone on here has tried it & how it worked out?
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That's some very nice workmanship! Impressive!
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luckygti
Posted a lot
I need to try harder!
Posts: 4,912
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Blimey, that's a masterpiece. I might be coming to you for some advice when I fit my 2.5 Scooby lump in the van  |
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Very nice indeed, excellent out of the box thinking with the foam filled pipes, and the method for equal length primaries is very neat indeed.
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Very impressive stuff! & all I need to make is a simple 4 cylinder rwd layout version!
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bmboy
Part of things
great age!
Posts: 180
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Skoda Estelle 120l x3
Skoda Favorit
Triumph Dolomite
Mercedes-Benz 190E
BMW 635csi
BMW 528I
Volvo 850
Mercedes-Benz 230TE
Skoda 136 Rapid
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purplevanman
Posted a lot
Way too orangey for crows
Posts: 3,829
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Some class work going on here  |
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backzilla
Part of things
0 - 60 in 5.3 ............in the wet
Posts: 151
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id love to be able to do that. impressive. my stainless custom system, one piece is blowing. Whats the best fix?
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exhaust paste, or re-weld?
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You're like a crazy backyard genius! |
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Anglia68
Posted a lot
Powered By Boredom.
Posts: 2,049
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Who remembers Tubester? Is it still around?  |
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I've got a custom car with that thing in it somewhere!
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Wow, lovely pipework.
Whats going on in the filler foam pic with the black pipes? what is the black pipe?
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69 Plymouth Fury Convertible
75 Range Rover 2 door
82 Range Rover 4 door
84 Range Rover 4 door
78 Datsun 120Y 2 door
78 Datsun 120Y Coupe
78 Datsun 620 Pickup
81 Datsun Urvan E23
86 Datsun Vanette van
98 Electric Citroen Berlingo
00 Electric Peugeot Partner
02 Electric Citroen Berlingo
76 Honda C50
04 Berlingo Multispace petrol
07 Land Rover 130
15 Nissan E-NV200
15 Fiat Ducato
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Copey
Posted a lot
Posts: 2,845
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Wow, lovely pipework. Whats going on in the filler foam pic with the black pipes? what is the black pipe? guessin its an easy way to work out the angles needed! either way the system is mighty impressive! |
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1990 Ford Sierra Sapphire GLSi with 2.0 Zetec
1985 Ford Capri 3.0 (was a 2.0 Laser originally)
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Wow, lovely pipework. Whats going on in the filler foam pic with the black pipes? what is the black pipe? guessin its an easy way to work out the angles needed! either way the system is mighty impressive! Thanks, Guys! Yep, the foam filled stuff is just heater/defroster tubing. I wasn't sure which type would work better, the foil or the cardboard tubing, so I tried them both. The foil type was bent to a radius that matched the mandrel bent tubing that I planned to use and then filled with foam. The cardboard tubing was quite a bit stiffer and wouldn't maintain the proper radius, so I ran some wire inside of it and tied it tight to keep the radius, and then it was fill with foam. It turned out that the foil tubing was not quite rigid enough to create consistent radii (it moved around and flexed too much), even with the foam inside. The cardboard tubing worked out perfectly (very rigid), and if I were to do it again, I would create full copies of the mandrel U-bends that were used for the exhaust by hot gluing the tubing to a piece of cardboard in the exact shape of the U-bend. That would allow me to do a 100% mock-up of every tube and give me a perfect template to use for cutting the tubing. |
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gn3dr
Part of things
Posts: 391
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Feb 10, 2011 23:33:27 GMT
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Do a search for Bend Tech HD software. It's not too expensive and they make sone very useful software. You can design the manifold and it gives you angles and lengths to cut from standard J bends that you can buy off the shelf.
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xlr8r
Part of things
Posts: 80
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this is real useful for doing tube/pipe work ... "tubemiter.exe by Giles Puckett" enter the tube diameter, wall thickness, joining tube diameter, wall thickness & joining angle & it will give you a template for cutting. a search should find it, its free. or pm me & i'll send it . |
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Very nice work there folks  Thanks for sharing  |
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shamepants thats some very nice work there, only one little critisism, your welder is up too high |
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Feb 11, 2011 10:40:04 GMT
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I've used tubemiter for a few projects before too! Made trimming scaffolding pole to fit VERY easy  |
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You're like a crazy backyard genius!
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