Head Gaskets Bros400L

[CNbros400]

Hi Guys,

Hope all is well, Wondering if anyone here has bought a new set of head gaskets for the 400L model and could share a store I could buy them from.I Had a nice surprise on my bike when I pulled the head and found the heads were bolted to the cylinders using a cracked gasket and RTV.

I have searched, far and wide and cannot find anything. I have managed to send Webike-Japan a mail and they are searching for me as well, but I need a backup plan. One thing I also noticed is that the 400 J&K models have a different Part number than the L model. Does anyone know if there is truly a difference?

Cheers Don

[Forcerouge]

Hi mate,

I believe you're in China too, I'm in Shanghai, what about you?
First time I hear about J, K or L models, I'm not sure what difference does this make. I don't even know what letter my bike is, I just know it's a Bros400.

Anyway, a few months ago while rebuilding my engine I planned on replacing my head gaskets. As you know, it's quite difficult to find parts here... I ordered a few gaskets from taobao but none fitted at all... so what I did was to take a picture of the old gasket and then model it in my 3D software. Plan was then to simply ask a laser cutting service on taobao so that they could cut me a few gaskets for cheap out of some 0.3mm sheet metal.
But then I decided to reuse my old gaskets that were still fine after a bit of cleaning, so I never really went through the whole process.

So what I propose you is that you try and download the 3D file I made at the time, then I suggest you 3D print it and make a test fit to make sure everything's fine, because as I said I havent really tested anything since I changed plans. If it's ok, then you can order a gasket from a laser cutting company and everything should be well.
If it's not fitting well or if you need a few modifications in the design, then just contact me and I'll help you make the mods, in case you don't know how to use a 3D software.

Here's the editable file:
Head Gasket Nt400.step

And here is the file ready to be 3D printed:
Head Gasket Nt400.stl

Have a nice day!

[CNbros400]

Hi Bud,

Yip, In Guangzhou. I learned on this thread mostly about the differences and then some searches on Google about the different models, Whilst I truly cannot find any information on engine changes or specs besides the L model i believe having the PGM ignition and a throttle sensor on the carb, it seems mostly the difference is the larger 18" wheel and the 3 spoke vs the J&K 6 spoke rims.

Thank you for this info, If I will give this a try if i don't succeed with the guys in Japan.

[yorkshire]

Hi, I believe the big difference with the PGM model is the oil feed to the cylinder head is internal as apposed to an external pipe.

[Bros Steve]

image.png

[Bros Steve]

I hope this is useful, although it does show external oil pipe.

[Bros Steve]

image.png

[Bros Steve]

Hi mate,

I believe you're in China too, I'm in Shanghai, what about you?
First time I hear about J, K or L models, I'm not sure what difference does this make. I don't even know what letter my bike is, I just know it's a Bros400.

Anyway, a few months ago while rebuilding my engine I planned on replacing my head gaskets. As you know, it's quite difficult to find parts here... I ordered a few gaskets from taobao but none fitted at all... so what I did was to take a picture of the old gasket and then model it in my 3D software. Plan was then to simply ask a laser cutting service on taobao so that they could cut me a few gaskets for cheap out of some 0.3mm sheet metal.
But then I decided to reuse my old gaskets that were still fine after a bit of cleaning, so I never really went through the whole process.

So what I propose you is that you try and download the 3D file I made at the time, then I suggest you 3D print it and make a test fit to make sure everything's fine, because as I said I havent really tested anything since I changed plans. If it's ok, then you can order a gasket from a laser cutting company and everything should be well.
If it's not fitting well or if you need a few modifications in the design, then just contact me and I'll help you make the mods, in case you don't know how to use a 3D software.

Here's the editable file:
[ATTACH]n974294[/ATTACH]

And here is the file ready to be 3D printed:
[ATTACH]n974295[/ATTACH]

Have a nice day!

If you send an email to this shop with your engine and frame number they should be able to give you the model designation.
[email protected]

[CNbros400]

Thanks guys appreciate the help.