alternative fuel pump for Rotax 912ULS

[Kyle Communications]

I was put onto them by another guy who is running them. I have fitted these to 2 new engines and they fit perfectly..hopefully after this weekend I can tell you if at least one of them works when I start the engine on this rebuilt big bore kit engine

 

[facthunter]

Even the gasket thickness affects these things. Every bit of care is required. Nev

[Kyle Communications]

All looked and measured exactly the same Nev

 

[danny_galaga]

  On 29/03/2023 at 6:33 AM, Kyle Communications said:

I was put onto them by another guy who is running them. I have fitted these to 2 new engines and they fit perfectly..hopefully after this weekend I can tell you if at least one of them works when I start the engine on this rebuilt big bore kit engine

 

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Looking forward to hearing more 🙂

 

I may buy one or two and store in my garage for the next five year replacement. 

[facthunter]

Could easily be a shelf life regarding the diaphragm. For automotive work that would never be mentioned. The Bodies are usually Diemetal with high zinc content and age. (Buckle and go brittle).    Advantage is you can cast the threads and other detail.  Nev

[danny_galaga]

  On 29/03/2023 at 7:29 AM, facthunter said:

Could easily be a shelf life regarding the diaphragm. For automotive work that would never be mentioned. The Bodies are usually Diemetal with high zinc content and age. (Buckle and go brittle).    Advantage is you can cast the threads and other detail.  Nev

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Yes, that has crossed my mind, that the rubber might perish just sitting there. I will investigate. My garage is cooler than my house, so heat shouldn't be an issue 

[facthunter]

Nearly see us out, anyhow.   Put it in a welded plastic bag .Nev

[danny_galaga]

From this it implies Rotax themselves say 48 month shelf life 

 

https://www.rotax-owner.com/en/912-914-technical-questions/9671-912-fuel-pump-shelf-life?start=0

 

 

[Kyle Communications]

Vacuum bag it. then no drama

 

[Kyle Communications]

Well I did the first start on Mabels engine..it has the fuel pump I showed on it and it worked fine

 

[danny_galaga]

  On 02/04/2023 at 10:59 PM, Kyle Communications said:

Well I did the first start on Mabels engine..it has the fuel pump I showed on it and it worked fine

 

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Looks like you've avoided the RO-tax 😄

[facthunter]

Short ground runs are not a good idea.  Nev

[pmccarthy]

  On 04/04/2023 at 12:50 AM, facthunter said:

Short ground runs are not a good idea.  Nev

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It will be a short run as he is towing the ute.

[Kyle Communications]

I ran the engine until the oil got to over 55 degC  the video was edited

Too boring otherwise