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tii aftermarket fuel system


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Hi guys,

 

After restoring my trunk bay, i am thinking of installing aftermarket pump/filter with a catch tank to feed the Kugelfischer.

I have a full original TII engine, i would like to hear your suggestions/experciences or setup photos would be nice to get some ideas. 

I guess fuel pressure and diameter of the hoses will play a big role aswell?

 

Best regards,

 

Christophe 

 

 

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Replace your original fuel pump with one from an E28. It is less expensive, readily available & the correct flow rate for the Tii. Will have to make a pigtail wiring harness as it isn't the same plug as the original. Will also probably shim the pump body with some rubber to make it snug. All of they is well documented & easy to search.

https://www.bmw2002faq.com/search/?q=E28 Fuel Pump&quick=1

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20 hours ago, doublet5 said:

I have a full original TII engine, i would like to hear your suggestions/experiences or setup photos would be nice to get some ideas. 

 

So is your car a tii?  Your explanation could be that you want to convert your 02 to a tii and you are asking questions about fuel delivery.

 

Specifications call for 28.5 psi minimum at the KFish.  The E28 pump delivers that and more.

 

You will also need a fuel return to the tank (from the Kfish).  I suppose you can mount a pump in the trunk or possibly in-tank.

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The car is an original tii.

I am rebuilding it to a regularity rally car. I am a big fan of the trunk setups like they use in most historic rally cars. 

A setup like the photo below. I am not looking for the cheapest way to fuel the engine, but was interested if somebody had a setup like this in the trunk bay. I am keeping the original tii fuel tank. 

 

2021-01-07 18_19_25-fuel system rally car - Google Zoeken.png

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Maybe Gordon (Gracer) will chime in, but I have never had any real trouble with fuel delivery

using 2 pumps:  one picks up from the left side of the cell, the other picks up from the right.

 

I would not trust the stock tank and plumbing in any type of competition setting.

 

A cell built to replace the stock tank would be easy (you say cost isn't a factor).

 

Since the KFish doesn't mind OVERpressure,  have the cell built at an incline

to keep fuel at the rear of it.  Then one pump picking up at each rear corner, and done.

 

Yes, you CAN build a remote sump- I tried it, and it did work, but at the end of that season,

I took it out, because it worked no better than 2 pumps, and was less reliable 

(you're now depending on 1 pump)

 

fwiw.

t

 

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12 hours ago, gracer said:

I used a low pressure pump to supply a surge tank.  In turn the surge tank supplied the high pressure pump for the Kfish.

that setup worked great.  G

Hi Gracer! You wouldn't have a photo of this setup by any chance? Thanks for the feedback! 

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15 hours ago, TobyB said:

Maybe Gordon (Gracer) will chime in, but I have never had any real trouble with fuel delivery

using 2 pumps:  one picks up from the left side of the cell, the other picks up from the right.

 

I would not trust the stock tank and plumbing in any type of competition setting.

 

A cell built to replace the stock tank would be easy (you say cost isn't a factor).

 

Since the KFish doesn't mind OVERpressure,  have the cell built at an incline

to keep fuel at the rear of it.  Then one pump picking up at each rear corner, and done.

 

Yes, you CAN build a remote sump- I tried it, and it did work, but at the end of that season,

I took it out, because it worked no better than 2 pumps, and was less reliable 

(you're now depending on 1 pump)

 

fwiw.

t

 

Hi Toby,

 

Thanks for your feedback! The main thing is that the technical control for oldies in Belgium is getting stricter every year. Rebuilds are making the car stronger but unfortunately not in their opinion. To keep the car road legal we must obtain as much original as possible. That is the main reason why i want to keep the original tank. Till this day i did not make any big conversions to the car so i can undo everything if necessary. Even when the car is registrated as an oldtimer with special number plate, we still need to pass a control every 2 years, cars older than 50 years are getting green light for 5 years.. Poor Belgium ... :) 

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