modifying s5 rails
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modifying s5 rails
i am modifying my s5 rails so that i can fun an aftermarket fpr and get rid of the pd. I chopped off the ends and bought some -6an weld in bungs. What is the appropriate method to join these? should i weld it or braze it? Thanks.
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i havent done either. could i get things hot eneough with a mapp gas torch? so all i need to do is get everything really hot then introduce the brazing rod just like i was soldering copper pipes together rite? Do i need any special type of brazing rod?
thanks for all the great replies
thanks for all the great replies
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It may just be the picture, but those bungs look like they are aluminum. If that's the case, you won't be able to braze them to the steel fuel rail. The melting temperature of aluminium is so low that by the time the steel is hot enough, the aluminum will be liquid.
If they are steel fittings, then you can weld or braze them. Best welding method would be gas or a TIG, but if you are careful with a MIG and run some thin wire then that can certainly be done. Flux core or stick will introduce too much splatter. For brazing, a pre-fluxed bronze rod designed to braze steel would be idea. File the flare fitting so that it fits tightly in the fuel rail and then do your brazing. That way the metal will be sucked into the space and form a solid connection. Brazing is really bad at filling gaps.
If they are steel fittings, then you can weld or braze them. Best welding method would be gas or a TIG, but if you are careful with a MIG and run some thin wire then that can certainly be done. Flux core or stick will introduce too much splatter. For brazing, a pre-fluxed bronze rod designed to braze steel would be idea. File the flare fitting so that it fits tightly in the fuel rail and then do your brazing. That way the metal will be sucked into the space and form a solid connection. Brazing is really bad at filling gaps.
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Aarons got it, personally, I would TIG, but brazing will work fine too. Make sure you pressure test to x2 running PSI min.
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Originally Posted by Aaron Cake
Water pipes in a house are generally soldered. But we are (at least in Canada anyway) moving away from copper pipe to plastic IPEXX pipe that seals together with barbed nipples and compression fittings...at little OT though....
As for brazing, in this application it's fine. If you want to MIG weld it then that's also OK. In general a braze between two flat surfaces (think overlapping sheet metal) is basically as strong as a weld. So for close tolerances like fittings where you may be joining different metals (the fuel rails are steel but most AN fittings are aluminum) brazing is ideal. However if you have steel AN flares then MIG welding will work just fine. Make sure to pressure test it though because it's easy to make leaks. Another option is TIG, which gives you the choice of just fusion welding the fitting. This almost guarantees that it will be leak free, and the weld is tiny and neat.
As for brazing, in this application it's fine. If you want to MIG weld it then that's also OK. In general a braze between two flat surfaces (think overlapping sheet metal) is basically as strong as a weld. So for close tolerances like fittings where you may be joining different metals (the fuel rails are steel but most AN fittings are aluminum) brazing is ideal. However if you have steel AN flares then MIG welding will work just fine. Make sure to pressure test it though because it's easy to make leaks. Another option is TIG, which gives you the choice of just fusion welding the fitting. This almost guarantees that it will be leak free, and the weld is tiny and neat.
EDIT: Also... http://en.wikipedia.org/wiki/Brazing
Soldering = Brazing
#13
Banned. I got OWNED!!!
Brazing does not equal soldering.... but then again, it's on the internet so it must be true. By your own words he RELATED IT!!!!! NOT THE SAME THING!!!!!!! Thanks for the name calling though, I appreciate it.
EDIT : so now I'm reacting to the name calling -
I read the wiki-pedia which can be about as accurate as a shotgun or worse sometimes & I never read the word solder. I also read Aarons post and aside from reading (paraphrasing here) - LIKE, as in SIMILAR to, or RESEMBLING, perhaps COMPARABLE with soldering a plumbing fitting, he never told anyone to solder a fuel rail. See where I'm going, Soldering does NOT equal brazing. Two totally seperate processes with multiple different metals and fluxes.
Sorry to say this again but you are wrong and that is viperdouchely dangerous
EDIT : so now I'm reacting to the name calling -
I read the wiki-pedia which can be about as accurate as a shotgun or worse sometimes & I never read the word solder. I also read Aarons post and aside from reading (paraphrasing here) - LIKE, as in SIMILAR to, or RESEMBLING, perhaps COMPARABLE with soldering a plumbing fitting, he never told anyone to solder a fuel rail. See where I'm going, Soldering does NOT equal brazing. Two totally seperate processes with multiple different metals and fluxes.
Sorry to say this again but you are wrong and that is viperdouchely dangerous
Last edited by TitaniumTT; 07-06-07 at 02:51 PM.
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Brazing does not equal soldering.... but then again, it's on the internet so it must be true. By your own words he RELATED IT!!!!! NOT THE SAME THING!!!!!!! Thanks for the name calling though, I appreciate it.
EDIT : so now I'm reacting to the name calling -
I read the wiki-pedia which can be about as accurate as a shotgun or worse sometimes & I never read the word solder. I also read Aarons post and aside from reading (paraphrasing here) - LIKE, as in SIMILAR to, or RESEMBLING, perhaps COMPARABLE with soldering a plumbing fitting, he never told anyone to solder a fuel rail. See where I'm going, Soldering does NOT equal brazing. Two totally seperate processes with multiple different metals and fluxes.
Sorry to say this again but you are wrong and that is viperdouchely dangerous
EDIT : so now I'm reacting to the name calling -
I read the wiki-pedia which can be about as accurate as a shotgun or worse sometimes & I never read the word solder. I also read Aarons post and aside from reading (paraphrasing here) - LIKE, as in SIMILAR to, or RESEMBLING, perhaps COMPARABLE with soldering a plumbing fitting, he never told anyone to solder a fuel rail. See where I'm going, Soldering does NOT equal brazing. Two totally seperate processes with multiple different metals and fluxes.
Sorry to say this again but you are wrong and that is viperdouchely dangerous
Also.. in my second reply, I don't recall using words like DEFINATELY, and ASBOLUTELY.. but I do remember using words like PROBABLY and "I WOULD IMAGINE".
#16
Banned. I got OWNED!!!
Ok - I would imagine that if I heard solder it I would probably go to the store and buy solder. But if I heard brazing I would imagine I would probably ask what brazing is if I didn't know or go buy some brazing materials
I used the same words - All I'm saying is fuel tends to burn things and can explode so I would be very careful in the words you choose.
If it we me over there, I would man up and admit fault & apologize. It's not an eff'ing technicality here where you slipped up. You were wrong and had the ***** to call me a jerk.
Wackaloo - Aeroquip sells caps that seal. You can use a few of those and some other fittings to rig it directly to an air-compressor and keep turning up the regulator to the desired PSI - here's a link.... http://store.summitracing.com/partde...5&autoview=sku
You can crank down on those with the same torque that you can the fittings and get the same seal rated to the same pressure
& one more thing............ You can't use the words or phrases EXACTELY THE SAME EXCEPT FOR becuase by definition it is not exactely the same. Soldering does not equal brazing by your own admission becuase of the materials used, therefore soldering does not = brazing.
I've made my point, I'm done
I used the same words - All I'm saying is fuel tends to burn things and can explode so I would be very careful in the words you choose.
If it we me over there, I would man up and admit fault & apologize. It's not an eff'ing technicality here where you slipped up. You were wrong and had the ***** to call me a jerk.
Wackaloo - Aeroquip sells caps that seal. You can use a few of those and some other fittings to rig it directly to an air-compressor and keep turning up the regulator to the desired PSI - here's a link.... http://store.summitracing.com/partde...5&autoview=sku
You can crank down on those with the same torque that you can the fittings and get the same seal rated to the same pressure
& one more thing............ You can't use the words or phrases EXACTELY THE SAME EXCEPT FOR becuase by definition it is not exactely the same. Soldering does not equal brazing by your own admission becuase of the materials used, therefore soldering does not = brazing.
I've made my point, I'm done
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I used the same words - All I'm saying is fuel tends to burn things and can explode so I would be very careful in the words you choose.
If it we me over there, I would man up and admit fault & apologize. It's not an eff'ing technicality here where you slipped up. You were wrong and had the ***** to call me a jerk.
If it we me over there, I would man up and admit fault & apologize. It's not an eff'ing technicality here where you slipped up. You were wrong and had the ***** to call me a jerk.
Naww, its aight man. I love a good argument.
I was wrong. period. JERK. Also, I have HUGE *****...
But, anybody in their right mind would get a second opinion before making major alterations on their fuel system. I mean.. "but then again, it's on the internet so it must be true." applies to everything on the internet. So.... If they took my advice straight up without any confirmation, they deserve the fate they get. Harsh, I know... but... true. Measure twice, cut once.
#18
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That's some funny ****... mad bad too.
I love that saying. I also prefer, "You really don't wanna be the guy coming back here saying, 'I don't get it?? I cut it twice and it's still too short.'"
I love that saying. I also prefer, "You really don't wanna be the guy coming back here saying, 'I don't get it?? I cut it twice and it's still too short.'"
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Wackaloo - Aeroquip sells caps that seal. You can use a few of those and some other fittings to rig it directly to an air-compressor and keep turning up the regulator to the desired PSI - here's a link.... http://store.summitracing.com/partde...5&autoview=sku
You can crank down on those with the same torque that you can the fittings and get the same seal rated to the same pressure
You can crank down on those with the same torque that you can the fittings and get the same seal rated to the same pressure
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From http://www.lucasmilhaupt.com/htmdocs...port/faqs.html :
Brazing - The AWS defines brazing as a group of joining processes that produce coalescence of materials by heating them to the brazing temperature and by using a filler metal (solder) having a liquidus above 840°F (450°C), and below the solidus of the base metals.
Soldering - Soldering has the same definition as brazing except for the fact that the filler metal used has a liquidus below 840°F (450°C) and below the solidus of the base metals.
Welding - In welding, fusion takes place with melting of both the base metal and usually a filler metal.
Soldering - Soldering has the same definition as brazing except for the fact that the filler metal used has a liquidus below 840°F (450°C) and below the solidus of the base metals.
Welding - In welding, fusion takes place with melting of both the base metal and usually a filler metal.
Now, as for something that fits in an injector bung to allow a pressure test...Ah ha! How about a fuel injector? Use a clamp or strap of sheet metal to prevent it from shooting out.
The devil is in the details. Keep in mind that a lot of people have no clue about brazing and soldering (clear evidence would be in my buildup thread with the infamous copper heater pipes) and will make assumptions when the specifics are not supplied. Remember that at least one space shuttle blew up because of a mixup in metric vs. standard measurements.
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Yeah yeah yeah.. We all determined I'm a tool.. Can we move on?
Semantics... gawll..
Also.. I agree with your opinion on wikipedia. Which is why I don't use it as my only source. I confirm it with another site.. but wikipedia is usually easy to read and nicely formatted.. However, anybody can edit anything on wikipedia withOUT an account. Its the nature of a wiki. If you find something to be inaccurate, fix it!
Semantics... gawll..
Also.. I agree with your opinion on wikipedia. Which is why I don't use it as my only source. I confirm it with another site.. but wikipedia is usually easy to read and nicely formatted.. However, anybody can edit anything on wikipedia withOUT an account. Its the nature of a wiki. If you find something to be inaccurate, fix it!