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1Back to top Go down   Relocating the Fuel Pressure Regulator Empty Relocating the Fuel Pressure Regulator on Thu Jul 11, 2019 8:20 pm

Crazy Frog

Crazy Frog
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3 days ago, it was very hot and I was riding in the traffic when the temperature warning light went off on the dash.
I stopped the bike, let it cool down and later continue my trip. No damages have been done, but the bloody radiator fan was cooked.
Because of the sidecar subframe, it took a full day to replace the fan. The reason is that there is no room to tilt the radiator and the fan had to be removed before the radiator can be moved sideways (with a bit of persuation). I got the fan off my solo K75 and it took me only 45 minutes to remove it. Very Happy
As I had to remove the sidecar, I decided to relocate the Fuel Pressure Regulator(FPR).
The 2 main problems with the FPR is its location..... Very difficult to access and certainly in the hottest place on the bike (Right between the air filter canister and the throttle body).
I installed it in front of the throttle body where it could be easier to access it in case of problems.
Note: I left the original one and just plugged the hoses. If needed, I could switch between the new one and the original one in no time.
My K is an RT and in order to remove the tank, at least the bottom fairing has to be removed to access the clamps on the tank's fuel hoses.
Last year, I extended the fuel hoses and electrical connections to be able to slide the tank back without having to disconnect it. This gives me access to the ignition computer as well as the electrical tray.

Here are pictures of the modification:

Relocating the Fuel Pressure Regulator 20190710
Relocating the Fuel Pressure Regulator 20190711

I used brass barber fittings to connect the hoses together and 90 degrees one for tight turns:
Relocating the Fuel Pressure Regulator Brass-10 Relocating the Fuel Pressure Regulator Pgp_z110


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Relocating the Fuel Pressure Regulator Frog15Relocating the Fuel Pressure Regulator Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

nino

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I relocated FPR to the right side under the plastic side cover. Instead of original FPR I connected adjustable one from Ebay, but on cca 3 bars pressure. I think it runs better with slightly higher pressure. 
I isolated fuel hoses with some electrical tubes which squeeze with heat gun. When you have long hoses behind hot radiator it deteriorate very fast, after few months. My opinion is that you need good thermal isolation of fuel hoses.
Consumption with 3,0 bars - about 5 liters on our old coastal road. I didnt check on highway.
Best regards. Thanks  for this beautiful forum

    

Porto

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Sounds good. Some years ago an old mechanic repaired mine. He also made an adapter with condensation drain to spread the vacuum across all cylinders. Unbelievable improvement.

    

nino

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Hi Porto, would you be so kind to describe improvements?

    

Porto

Porto
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PNo problem at all. But first have a look at my post in the related section. I explained to another fello and put a picture up. If you want some more info I would pe happy to give some more. I’ve only got an iPhone at the moment, it’s a bit like riding a post bike on the net.

    

glennpm

glennpm
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@nino wrote:Hi Porto, would you be so kind to describe improvements?

Here is Porto's mod:

http://www.k100-forum.com/t15212-vacuum-modification

    

7Back to top Go down   Relocating the Fuel Pressure Regulator Empty Re: Relocating the Fuel Pressure Regulator on Fri Jul 19, 2019 10:56 pm

Porto

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Crazy frog did you say it’s a sidecar? If so have you got a pic. I’m hopeless on line.

    

Crazy Frog

Crazy Frog
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@Porto wrote:Crazy frog did you say it’s a sidecar? If so have you got a pic. I’m hopeless on line.
Relocating the Fuel Pressure Regulator 20181012


__________________________________________________
Relocating the Fuel Pressure Regulator Frog15Relocating the Fuel Pressure Regulator Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

Porto

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Fantastic. Let me know if you ever want to sell it

    

10Back to top Go down   Relocating the Fuel Pressure Regulator Empty Re: Relocating the Fuel Pressure Regulator on Sat Jul 20, 2019 8:59 am

Crazy Frog

Crazy Frog
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@Porto wrote:Fantastic. Let me know if you ever want to sell it
This is how I bought it. A member posted a picture on the forum and I told him that if he wanted to sell it I would buy it.
A week later I did it. The sidecar was in Florida and the cost to transport it to the north of the USA was over $1,000. I then rode it to Canada.
The shipping cost to Australia would be very expensive and.... the sidecar is on the wrong side for you.


__________________________________________________
Relocating the Fuel Pressure Regulator Frog15Relocating the Fuel Pressure Regulator Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

11Back to top Go down   Relocating the Fuel Pressure Regulator Empty Re: Relocating the Fuel Pressure Regulator on Sat Jul 20, 2019 6:38 pm

Porto

Porto
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That’s a good story mate. I’ve been looking about for years. I’ll keep dreaming

    

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