Projects using JB Weld

Tips, tricks, questions and answers to tech questions
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

Another JB snippet!. This time it's a Fantic badge fitted to headlight mask below the headlight. It's a piece of ally shaped and bent, 2 M5 csk fixing screws were then stuck in place with JB. An Italian flag sticker was then stuck down and a 'F' cut out to suit the 'F' fantic logo cut from a small piece of ally which was then stuck in place with JB.
WP_20260112_15_07_58_Pro.jpg
WP_20260112_15_07_58_Pro.jpg (4.25 MiB) Viewed 1881 times
Headlight_Mask_with_F.jpg
Headlight_Mask_with_F.jpg (2.32 MiB) Viewed 1875 times
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

Koso fuel and oil pressure gauges stuck in place with JB. Don't worry haven't got many more examples of JB left!
WP_20250902_13_26_53_Pro.jpg
WP_20250902_13_26_53_Pro.jpg (4.45 MiB) Viewed 1859 times
WP_20260225_21_44_39_Pro.jpg
WP_20260225_21_44_39_Pro.jpg (4.49 MiB) Viewed 1860 times
WP_20260225_21_45_36_Pro.jpg
WP_20260225_21_45_36_Pro.jpg (4.56 MiB) Viewed 1861 times
User avatar
Count Steer
Posts: 15905
Joined: Mon Jul 19, 2021 4:59 pm
Has thanked: 8034 times
Been thanked: 5693 times

Re: Projects using JB Weld

Post by Count Steer »

Have you estimated what % weight of the bike is actually JB? :lol:
The plural of 'anecdote' is not 'data'.
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

Quite a bit, maybe 20 packs or so of the stuff!. My other half thinks I use it for DIY and household repairs! :lol:
kendo57
Posts: 396
Joined: Sun Apr 05, 2020 6:16 pm
Has thanked: 399 times
Been thanked: 748 times

Re: Projects using JB Weld

Post by kendo57 »

Never really shared the love for JB weld , have used it but found it does not drill and tap great.
Its epoxy resin with metal particles essentially.
I have used it as a metal filler but for joining parts i prefer something like Sikaflex .
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

Haven't heard of Sikaflex, I'll check it out, thanks.
User avatar
Rockburner
Posts: 6033
Joined: Sun Mar 15, 2020 11:06 am
Location: Hiding in your blind spot
Has thanked: 10959 times
Been thanked: 3995 times

Re: Projects using JB Weld

Post by Rockburner »

Dave G wrote: Thu Feb 26, 2026 7:48 pm Haven't heard of Sikaflex, I'll check it out, thanks.
IIIRC the solar panels on my van were glued down with Sikaflex. I've not used it personally, (the panels were fitted by a shop) but it seems pretty good stuff.
non quod, sed quomodo
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

Seems there's quite a good range of adhesives used by the Pro's and Diy er's, which is worth knowing!!

https://www.sika.com/en/brands/sikaflex.html
iansoady
Posts: 504
Joined: Thu Mar 19, 2020 10:12 am
Has thanked: 72 times
Been thanked: 244 times

Re: Projects using JB Weld

Post by iansoady »

Yes, I remember their products are widely used for caravans and motorhomes.
Wossname
Posts: 1305
Joined: Fri Apr 10, 2020 7:14 pm
Location: West of the Tamar
Has thanked: 357 times
Been thanked: 918 times

Re: Projects using JB Weld

Post by Wossname »

Sikaflex keeps a bit of flex, so isn’t any good for joints which are meant to be rigid.
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

So probably no good as a weld repair then!.
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

Just fixed some mesh behind the headlight mask cut outs with JB just to make them look a bit more purposeful!. The grey JB has been painted white just to try and disguise it.
WP_20260303_15_56_11_Pro.jpg
WP_20260303_15_56_11_Pro.jpg (4.14 MiB) Viewed 1672 times
WP_20260303_15_56_47_Pro.jpg
WP_20260303_15_56_47_Pro.jpg (4.12 MiB) Viewed 1672 times
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

When I replaced the NC450 sohc engine with the NC450S dohc engine I had to make new brackets for the HT coil and rectifier/regulator due to the limited space above the cylinder head. These brackets were made out of ally shaped and bent with spacers fixed with JB.
20250223_210436.jpg
20250223_210436.jpg (493.07 KiB) Viewed 1635 times
20250225_154056.jpg
20250225_154056.jpg (451.14 KiB) Viewed 1635 times
20250225_202903.jpg
20250225_202903.jpg (723.34 KiB) Viewed 1635 times
20250312_215747.jpg
20250312_215747.jpg (561.02 KiB) Viewed 1635 times
User avatar
Scotsrich
Posts: 1000
Joined: Thu Mar 19, 2020 10:46 am
Location: East Lothian
Has thanked: 92 times
Been thanked: 820 times

Re: Projects using JB Weld

Post by Scotsrich »

IMG_0187.jpeg
IMG_0187.jpeg (687.05 KiB) Viewed 1607 times
Possibly not the best use.

I bought a GSXR 750 years ago and stuck it straight into a mates garage over the winter. He phoned me up to say there was a pool of oil under the bike. On investigation there was a lump out the crankcase stuck on with JB. That probably explained the multiple owners it had had. Buy it,find out the problem and sell it on.

The picture is the welding that my mate did, easy for someone with the right knowledge and equipment. Now why couldn’t someone have done that before punting on a defective bike?
User avatar
Count Steer
Posts: 15905
Joined: Mon Jul 19, 2021 4:59 pm
Has thanked: 8034 times
Been thanked: 5693 times

Re: Projects using JB Weld

Post by Count Steer »

Scotsrich wrote: Thu Mar 05, 2026 12:21 pm IMG_0187.jpeg


I bought a GSXR, 750 years ago, and stuck it straight into a mates garage over the winter.
I kept reading that as if those commas were there. :lol:
The plural of 'anecdote' is not 'data'.
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

Scotsrich wrote: Thu Mar 05, 2026 12:21 pm IMG_0187.jpeg

Possibly not the best use.

I bought a GSXR 750 years ago and stuck it straight into a mates garage over the winter. He phoned me up to say there was a pool of oil under the bike. On investigation there was a lump out the crankcase stuck on with JB. That probably explained the multiple owners it had had. Buy it,find out the problem and sell it on.

The picture is the welding that my mate did, easy for someone with the right knowledge and equipment. Now why couldn’t someone have done that before punting on a defective bike?
Are you sure it was JB and not that chemical metal stuff? :hmmm:
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

When I fitted the new engine I had to lift the petrol tank up 6mm front and rear so that I had some clearance between the tank and the engine, the following pdf expains how I did this and also the use of JB.

Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

Made up this plate to fix Kreiga Rally pack to Berotec rear rack which has locating blocks stuck into position with JB.
Squires_Aug_24 004.JPG
Squires_Aug_24 004.JPG (2.68 MiB) Viewed 1474 times
Dave G
Posts: 143
Joined: Thu Sep 18, 2025 5:55 pm
Has thanked: 88 times
Been thanked: 71 times

Re: Projects using JB Weld

Post by Dave G »

This is my latest and last project that uses JB, so over to you Guys now for your examples!. Nothing fancy just made a bracket to secure the fuel filter to the carb. I removed the throttle position sensor and used the fixing hole for securing the bracket instead. The CDI that I'm using doesn't have a TPS input so no problem removing it. However I needed to blank off the TPS aperture to avoid any air leaks, which I did so by making a ally blanking plug and fixing into position with JB.
WP_20260305_19_29_48_Pro.jpg
WP_20260305_19_29_48_Pro.jpg (4.26 MiB) Viewed 1413 times
iansoady
Posts: 504
Joined: Thu Mar 19, 2020 10:12 am
Has thanked: 72 times
Been thanked: 244 times

Re: Projects using JB Weld

Post by iansoady »

I had to do something similar for the Keihin FCR carb on my B'Zuki as I've fitted a cable operated choke and it won't allow the TPS to be fitted. I just turned up a plastic cap out of some scrap. I'm told that all the TPS does for this engine (DRZ400E) is to increase the idle speed a bit when in gear. Anybody know any different? It seems to run perfectly well.
Post Reply