R90s petcocks

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"Chris Perry"

R90s petcocks

Post by "Chris Perry" »

Hi All,

Anyone ever swap the original Karcoma style petcocks (straight down style with plastic nipple) to the more modern 45 degree angle all metal (BMW Karcoma) types?

MAX parts states it will work, but they’re definitely different height tubes (originals are shorter height tall tube) and also use different copper screens, The newer ones are of course the full tube screen with built in crush washer, the older ones seem to have two tiny thimble like screens that sit loosely on each white gas intake tube.

Best,
Chris Perry

Attachments
0D1E5D5E-FCEA-4501-BF84-295C5B92FE18_Screen Shot 2023-07-25 at 6.59.12 PM.png
0D1E5D5E-FCEA-4501-BF84-295C5B92FE18_Screen Shot 2023-07-25 at 6.59.12 PM.png (544.73 KiB) Viewed 259 times

"Todd Trumbore"

Re: [R90SWORLDNET] R90s petcocks

Post by "Todd Trumbore" »

Chris,That 90° petcock is a perfectly fine replacement and will work well without any issues. ToddSent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Chris Perry <cdp888@gmail.com> Date: 7/25/23 7:00 PM (GMT-05:00) To: R90SWORLDNET@groups.io Subject: [R90SWORLDNET] R90s petcocks Hi All, Anyone ever swap the original Karcoma style petcocks (straight down style with plastic nipple) to the more modern 45 degree angle all metal (BMW Karcoma) types?  MAX parts states it will work, but they’re definitely different height tubes (originals are shorter height tall tube) and also use different copper screens,  The newer ones are of course the full tube screen with built in crush washer, the older ones seem to have two tiny thimble like screens that sit loosely on each white gas intake tube.  Best, Chris Perry 

Attachments
1365320843.660451.1690327865913_Screen Shot 2023-07-25 at 6.59.12 PM.png
1365320843.660451.1690327865913_Screen Shot 2023-07-25 at 6.59.12 PM.png (544.73 KiB) Viewed 259 times

"Chris Perry"

Re: [R90SWORLDNET] R90s petcocks

Post by "Chris Perry" »

Thanks Todd, been doing the process of elimination on some weird fueling gremlins at speeds over 60mph, the old ones were pretty shot and grimy. Also going to replace the cork gas cap gasket and clear out the vent hole too.

Cheers!
Chris



> On Jul 25, 2023, at 7:30 PM, motorrader <motorrader@verizon.net> wrote:
>
> Chris,
>
> That 90° petcock is a perfectly fine replacement and will work well without any issues.
>
> Todd
>
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
>
>
> -------- Original message --------
> From: Chris Perry <cdp888@gmail.com>
> Date: 7/25/23 7:00 PM (GMT-05:00)
> To: R90SWORLDNET@groups.io
> Subject: [R90SWORLDNET] R90s petcocks
>
> Hi All,
>
> Anyone ever swap the original Karcoma style petcocks (straight down style with plastic nipple) to the more modern 45 degree angle all metal (BMW Karcoma) types?
>
> MAX parts states it will work, but they’re definitely different height tubes (originals are shorter height tall tube) and also use different copper screens, The newer ones are of course the full tube screen with built in crush washer, the older ones seem to have two tiny thimble like screens that sit loosely on each white gas intake tube.
>
> Best,
> Chris Perry
> <Screen Shot 2023-07-25 at 6.59.12 PM.png>
>


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