7 replies to this topic

[Cooper Mac]

While the Rear Subby is off, and I'm replacing the front to back brake pipe, I thought I might as well replace the fuel pipe.

 

The car is a 1991 Cooper Carb, and I'll be keeping the HIF44, but the engine will be a "fast road" 1330.....

 

So my questions are:

 

1) Do I replace the fuel pipe with 1/4 OD pipe, or is there any advantage with increasing the diameter?

 

2) Is copper pipe OK, or is Copper Nickel preferable?

 

3) I was thinking of fitting a Fuel Filter on the rear subframe, between the Tank and the solid fuel pipe. Is that the best place, as close to the tank as possible? I might fit one before the Carb as well...

 

4) Is there any benefit fitting a fuel shut off tap after the fuel tank?

 

Cheers!

[RustyAutoCityE]

I will be interested in answers to 3 and 4, as they are on my to do list.

Apart from a bit of extra security and making it easier to run the car dry if going into storage, I thought a fuel tap would be useful when changing the filter.

[cal844]

Ideally you want the fuel filter as close to the carb as possible (so the pieces of hose that eventually degrade are caught).
I have mine at the back subframe purely because its a struggle to fit one in the engine bay.

I use 8mm Microbore and 1/4 inch fuel safe hose, I heat the ends of the hose in a cup of hot water, it gives a better seal but let's the hose expand a little over the pipe.

Generally I try to keep my hose lengths as short as possible.

I use a pair of needle nose vise grips to clamp the fuel hose for draining or changing.
Hope this helps

Cal

Edited by cal844, 11 September 2020 - 12:26 PM.

[Benoit_Dupont]

I prefer to have the filter closer to the tank and low. I've always concern with potential leaks on hot parts in the engine bay. I might be a bit safer on the rear sub. 

[andyapanel]

I did this some time ago. I remember bending the pipe round the front bulkhead was awkward. I used Copper Brake pipe.

I always put the filter as close to the Carb as possible, though I don't see why you cant put one at each end.

Good luck

[I hate Brian]

I've mounted mine on the inner wing strengthener next to the radiator just fits in snug 

Edited by I hate Brian, 11 September 2020 - 06:14 PM.

[Dusky]

1) unless its a real track car you don't need a bigger bore.
2) Kunifer or steel is preferable.
3) never put a fuel filter in front of a mechanical fuel pump. Always after.
4) it makes it easier to shut of the fuel. No risk damaging the lines with a vice grip and a clever anti theft device. Also ideal to make you wonder why it wont start... ;)

[Cooper Mac]

Thanks guys!

I’m going to go for 1/4 kunifer, shut off on rear subby and filter near the carb!