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What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 4:21 pm
by mangocrazy
I'm going to be joining two pieces of metal that will carry coolant/antifreeze in a car cooling system - what would be your jointing compound of choice? Hylomar, Hermetite, Threebond or something else?
Extra points for figuring out the not-so-hidden reference...
Re: What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 4:47 pm
by crust
I am firmly in the three bond camp.
Tried all the others, bought some Ducati bond as it was on offer loved it, won't pay for the Ducati name bit now but deffo only use three bond
Re: What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 7:07 pm
by dern
Weld.
The Cramps.
Re: What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 7:58 pm
by Rockburner
Permanent join? Or something that needs to come apart in the future?
Re: What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 8:18 pm
by mangocrazy
Rockburner wrote: Fri Feb 06, 2026 7:58 pm
Permanent join? Or something that needs to come apart in the future?
Fairly permanent. Once fixed it shouldn't need to come apart unless it needs a major engine overhaul.
Re: What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 8:31 pm
by Le_Fromage_Grande
crust wrote: Fri Feb 06, 2026 4:47 pm
I am firmly in the three bond camp.
Tried all the others, bought some Ducati bond as it was on offer loved it, won't pay for the Ducati name bit now but deffo only use three bond
This, I use the Suzuki branded one, recommended to me by a couple of people who build race engines
Re: What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 8:57 pm
by mangocrazy
John Hackett, who builds very fast and reliable Ducati engines, is also a Threebond devotee. But he uses the Ducati branded stuff, obvs...
Re: What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 10:14 pm
by porter_jamie
Yamabond
Re: What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 10:35 pm
by ZRX61
Threebond. I managed to get P&W R2800 18cyl radials oil tight with that stuff. I was accused of sorcery.
Re: What is your assembly goo-goo muck of choice?
Posted: Fri Feb 06, 2026 10:47 pm
by mangocrazy
I believe that Yamabond is the badge-engineered version of Threebond that Yamaha market. Open to being proved wrong...
Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 12:17 am
by Le_Fromage_Grande
mangocrazy wrote: Fri Feb 06, 2026 10:47 pm
I believe that Yamabond is the badge-engineered version of Threebond that Yamaha market. Open to being proved wrong...
You're correct, but a different type to the Suzuki one, the Suzuki one is literally a Threebond box with a Suzuki Genuine Part sticker on it. Yamabond used to be (and probably still is) very good for two stroke crankcases, which are direct metal to metal joints.
Has this car got a Lux Interior?
Or maybe it's lined with Fur?
Remember to read the instructions of whatever you get, you don't want to be Poisoned
Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 10:18 am
by mangocrazy
Le_Fromage_Grande wrote: Sat Feb 07, 2026 12:17 am
mangocrazy wrote: Fri Feb 06, 2026 10:47 pm
I believe that Yamabond is the badge-engineered version of Threebond that Yamaha market. Open to being proved wrong...
You're correct, but a different type to the Suzuki one, the Suzuki one is literally a Threebond box with a Suzuki Genuine Part sticker on it. Yamabond used to be (and probably still is) very good for two stroke crankcases, which are direct metal to metal joints.
Has this car got a Lux Interior?
Or maybe it's lined with Fur?
Remember to read the instructions of whatever you get, you don't want to be Poisoned
Does the Yamabond version still carry the '1215' name, or is it different (implying a different formulation)? I thought that vanilla Threebond was pretty good for metal to metal bonding anyway.
The vehicle in question is in very Good Taste and is entirely free from Garbage, Man.

Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 10:46 am
by Rockburner
I'm now wondering if I should be looking at something from Threebond for the JAPton... I was just going to use Blue Hylomar.
Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 10:51 am
by mangocrazy
Rockburner wrote: Sat Feb 07, 2026 10:46 am
I'm now wondering if I should be looking at something from Threebond for the JAPton... I was just going to use Blue Hylomar.
Every time I've used Threebond it's done exactly what was required of it. I doubt you'll find anything better.
Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 10:54 am
by Rockburner
mangocrazy wrote: Sat Feb 07, 2026 10:51 am
Rockburner wrote: Sat Feb 07, 2026 10:46 am
I'm now wondering if I should be looking at something from Threebond for the JAPton... I was just going to use Blue Hylomar.
Every time I've used Threebond it's done exactly what was required of it. I doubt you'll find anything better.
As long as it comes off when required, 100-ish year old magnesium crankcases don't need any extra agro!
Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 10:58 am
by mangocrazy
Rockburner wrote: Sat Feb 07, 2026 10:54 am
mangocrazy wrote: Sat Feb 07, 2026 10:51 am
Rockburner wrote: Sat Feb 07, 2026 10:46 am
I'm now wondering if I should be looking at something from Threebond for the JAPton... I was just going to use Blue Hylomar.
Every time I've used Threebond it's done exactly what was required of it. I doubt you'll find anything better.
As long as it comes off when required, 100-ish year old magnesium crankcases don't need any extra agro!
Magnesium poses a different set of questions, and I'd be looking for a Technical Data Sheet before committing. But John Hackett works on some pretty exotic stuff and the race bikes in particular use a lot of magnesium, and he swears by Threebond (although it may be the specific Ducati flavour).
I'll hit him up on Facebook and ask him...
Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 11:33 am
by Le_Fromage_Grande
mangocrazy wrote: Sat Feb 07, 2026 10:18 am
Le_Fromage_Grande wrote: Sat Feb 07, 2026 12:17 am
mangocrazy wrote: Fri Feb 06, 2026 10:47 pm
I believe that Yamabond is the badge-engineered version of Threebond that Yamaha market. Open to being proved wrong...
You're correct, but a different type to the Suzuki one, the Suzuki one is literally a Threebond box with a Suzuki Genuine Part sticker on it. Yamabond used to be (and probably still is) very good for two stroke crankcases, which are direct metal to metal joints.
Has this car got a Lux Interior?
Or maybe it's lined with Fur?
Remember to read the instructions of whatever you get, you don't want to be Poisoned
Does the Yamabond version still carry the '1215' name, or is it different (implying a different formulation)? I thought that vanilla Threebond was pretty good for metal to metal bonding anyway.
The vehicle in question is in very Good Taste and is entirely free from Garbage, Man.
Human Fly on the wall googling says it's no longer 1215
Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 11:35 am
by Le_Fromage_Grande
Rockburner wrote: Sat Feb 07, 2026 10:46 am
I'm now wondering if I should be looking at something from Threebond for the JAPton... I was just going to use Blue Hylomar.
Depends how much you want it to leak oil, my experiences of Hylomar weren't great, but I stopped using it 30 years ago
Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 12:56 pm
by Rockburner
Le_Fromage_Grande wrote: Sat Feb 07, 2026 11:35 am
Rockburner wrote: Sat Feb 07, 2026 10:46 am
I'm now wondering if I should be looking at something from Threebond for the JAPton... I was just going to use Blue Hylomar.
Depends how much you want it to leak oil, my experiences of Hylomar weren't great, but I stopped using it 30 years ago
Well, it's designed to leak oil, so I'm well aware that I'm up against it somewhat...
Re: What is your assembly goo-goo muck of choice?
Posted: Sat Feb 07, 2026 7:21 pm
by mangocrazy
John just got back to me - this is what he said:
I genuinely would recommend the Ducati “grey” sealant (prob made by three bond) no problem to use on mag cases it releases quite easily, cleans off easily and it works
I've seen the Ducati Threebond compound on eBay, but I'd be slightly surprised if it was any different to vanilla TB. But it's OK on mag cases, which is good.