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Fuel resistant adhesive?BenzBoy
@benzboy
Club Retro Rides Member 7
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Jul 30, 2010 15:13:53 GMT
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The float pinion bracket in one of my carbs has snapped off. I am annoyed at myself as it was my own oversight which caused it.  I'm looking for an adhesive to repair it, but it must be petrol resistant. I looked at Araldite's product specs, which says it's fuel resistant but doesn't recommend it for carb float repairs. Now, as the bracket repair is right at the top of the chamber, I don't think it'll be immersed in fuel, but it will get a soaking now and then when the fuel sloshes around. What about JB Weld? I've never used that product, is it an epoxy or more like a putty? I don't think a putty will work as it's too fine a repair. Any help / tips would be great.  |
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Jul 30, 2010 16:03:19 GMT
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I've just come across this stuff www.qbond.net/Its a glue that also comes with reinforcing powders that you put in place then drip the glue onto it, at which point there's a chemical reaction and it turns solid. Was recomended to me by a friend who runs a garage. Tried it the other day repairing a cracked bumper and i am very impressed with it. Little tricky to get the powder in place for some repairs but man does it stick well. One of the powders is for plastics and the other is for metals including carbs and engine parts. Fuel and oil resistant. |
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Fuel resistant adhesive?BenzBoy
@benzboy
Club Retro Rides Member 7
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Jul 30, 2010 16:26:27 GMT
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Thanks for that. From their product description, they say that the Q-Bond Adhesive is a Cyanoacrylate, which as I understand it is "super glue". I wasn't able to find out if superglue resists fuel though. Theirs does, according to them, but I don't know whether all cyanoacrylates are fuel resistant (I have some Loctite here) |
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Jul 30, 2010 16:31:35 GMT
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jb is epoxy , you can make it runny if you warm it up
good stuff
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91 golf g60, 89 golf 16v , 88 polo breadvan
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Jul 30, 2010 17:13:32 GMT
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yeah JB Weld is fuel resistant..... I've used in for making the inlet ports on an engine smaller, and 2 years on I havnt had any issues. although you will need to make sure its strong enough for what you want to use it for.  you need to key the surface pretty well to to give the JB weld the best grip  |
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Fuel resistant adhesive?BenzBoy
@benzboy
Club Retro Rides Member 7
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Jul 30, 2010 18:23:17 GMT
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Thanks for the replies fellas. I can't find anywhere local that sells JB Weld, or Q-Bond. Looks like I'll have to order some online and wait. I've got other things to get on with though. The bracket is only for the float pivot pin, so no stress or strain. It's just that with it being inside the carb, I won't know it's fallen off until my carb floods, so I need to get it right first time. |
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Jul 30, 2010 18:34:47 GMT
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BB, use the special epoxy sold specifically for "wet" seam and rust hole repairs to gasoline tanks! If you can't source a tube over there, I can slip one in an envelope from this side. Think Permatex makes it, if memory serves.... This is specifically for repairs to metal which are soaked in and submersed in fuel. Exactly your scenario.  Norm |
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 Team Blitz Ford Capri parts worldwide: Restoration, Road, or Race. Used, Repro, and NOS, ranging from scabby to perfect. Itching your Capri jones since 1979! Buy, sell, trade. www.teamblitz.com blitz@teamblitz.com |
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Fuel resistant adhesive?BenzBoy
@benzboy
Club Retro Rides Member 7
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Jul 30, 2010 18:38:38 GMT
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BB, use the special epoxy sold specifically for "wet" seam and rust hole repairs to gasoline tanks! If you can't source a tube over there, I can slip one in an envelope from this side. Think Permatex makes it, if memory serves.... This is specifically for repairs to metal which are soaked in and submersed in fuel. Exactly your scenario. Norm Hmm, I haven't seen such a thing on the shelves over here. Closest I've found to that over here is fuel tank repair putty, but a putty would be too thick to attach a small part I think. It does sound ideal! |
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Jul 30, 2010 20:07:36 GMT
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The stuff norm mentions is commonly sold here as Holts Leakstop...
Personally, I'd use araldite. Any 2 pack expoy adhesive should be fine though. Chemically changed and fuel proof when cured.
Superglue does dissolve in petrol, so don't bother with cyanoacrylates.
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To get a standard A40 this low, you'd have to dig a hole to put it in |
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Fuel resistant adhesive?BenzBoy
@benzboy
Club Retro Rides Member 7
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Jul 30, 2010 20:16:31 GMT
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The stuff norm mentions is commonly sold here as Holts Leakstop... Personally, I'd use araldite. Any 2 pack expoy adhesive should be fine though. Chemically changed and fuel proof when cured. Superglue does dissolve in petrol, so don't bother with cyanoacrylates. Ah I see, thanks Scary. I read up on the Araldite datasheet, and it says that it is fuelproof, but they don't recommend it to be used on carburettor floats or any "safety critical" parts - I'm sure they're just covering their ar$es, but I thought I'd put the question to the RR experts first to double-check. Besides, the float pivot shouldn't be constantly submerged in fuel (which I think is part of their reasoning for advising against using it there), so that looks like a good bet. And my local factors has it. Bonus. I might be able to get hold of some replacement bodies yet, but if not then it's stickin' time. ;D |
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Jul 30, 2010 20:24:07 GMT
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yeah, probably just ar$e covering... let's face it, you used to be able to get a rotten fuel tank glassfibre wrapped..... If there was a problem with epoxy resin and fuel, we'd know about it |
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To get a standard A40 this low, you'd have to dig a hole to put it in |
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Norm