Fuel Feed re-routing?
Fuel Feed re-routing?
Author
Discussion

laracer

Original Poster:

203 posts

188 months

Friday 3rd January 2020
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I am considering re-routing the feed line away from the bulkhead - am I missing something, as it would appear to be more convenient to route the line over the gearbox (affixed to the chassis) then run alongside the return line to the fuel rail?

Belle427

11,141 posts

254 months

Friday 3rd January 2020
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It’s always beneficial to keep the rubber lines as short as possible in my eyes as there is less to perish but I don’t see an issue in running it where you like as long as it’s well clipped and away from most of the heat.
Access for Inspecting/changing in the future is important.

laracer

Original Poster:

203 posts

188 months

Friday 3rd January 2020
quotequote all
I agree - it is my intention to use the metal line across the gearbox and change to rubber at an accessible point by the bellhousing - just seems a better route don't know why TVR didn't go this way originally.

Belle427

11,141 posts

254 months

Friday 3rd January 2020
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I ran new copper lines but lengthened them up into the engine bay so only short lengths of rubber to keep an eye on.

Tobs

237 posts

243 months

Friday 3rd January 2020
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Just done this - routed the nearside feed line across the chassis across to the return line then up into the engine bay all in 8mm kuniifer. Haven't as yet fitted the body back on, but intending to then fix the copper lines to the bulkhead somehow, bend 90 degrees forwards to join with short hose to the engine:


Belle427

11,141 posts

254 months

Saturday 4th January 2020
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I'm a bit embarrassed by how untidy they look but this is what I chose to do, I now have around 18 inches of rubber fuel lines easy accessible from the engine bay.

Zener

19,288 posts

242 months

Monday 6th January 2020
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I would be more concerned with flaring or dimpling those pipes rather than the lack of hose now needed, fuel line issues are blown out of proportion on these cars fit suitable branded fit right , I went to view a 02 450 Chimaera yesterday for a friend that had lots of specialist history, I was demonstrating the original from what I could make out hoses wearing perishing cracks and just pushing one there and then and fuel fogging out eek told the owner I had saved his car from almost immanent fire damage or at least a disgruntled new owner irked which was not my friend as it had combustion gases present in the cooling system so was a walk away rolleyes my point is its sub standard hose quality and well passed it hose that creates issues not just heat or minimising hose runs







Edited by Zener on Monday 6th January 13:46

Teamred

35 posts

82 months

Monday 6th January 2020
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I've just replaced all my lines with 5/16 kunifer, bringing it across the bulkhead and then around in a 'U' parallel with the flow and return pipes, connecting with a short length of rubber pipe. I sleeved the kunifer with Goodrich Fireproof sleeve for the sake of keeping everything cool (not that vapourisation should be an issue with a pressurised system) but the sleeve also provides good abrasion resistance. But of a faff getting it in with the engine in the way. Use decent fuel hose clamps.

Belle427

11,141 posts

254 months

Monday 6th January 2020
quotequote all
Zener said:
I would be more concerned with flaring or dimpling those pipes rather than the lack of hose now needed, fuel line issues are blown out of proportion on these cars fit suitable branded fit right , I went to view a 02 450 Chimaera yesterday for a friend that had lots of specialist history, I was demonstrating the original from what I could make out hoses wearing perishing cracks and just pushing one there and then and fuel fogging out eek told the owner I had saved his car from almost immanent fire damage or at least a disgruntled new owner irked which was not my friend as it had combustion gases present in the cooling system so was a walk away rolleyes my point is its sub standard hose quality and well passed it hose that creates issues not just heat or minimising hose runs







Edited by Zener on Monday 6th January 13:46
I compressed an olive on to the ends before fitting the rubber lines but I take on board your point.
It's very difficult to remove a rubber pipe from a non flared pipe after you have tightened it and want to remove it though.

Loubaruch

1,401 posts

219 months

Monday 6th January 2020
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My Griffith always leaked at the junction of the copper/rubber hoses. Even with 2 correct fuel clamps at first starting in the Spring fuel used to seep out.

Flaring the Cu pipes makes sense even if the rubber pipes are more difficult to remove.

Being fed up with constant leaks I replaced all the high pressure lines with Cohline SS braided ( as OEM fitted to Mercedes) and did away with the Cu except on the feed to the carbon canister.

That was 5 years ago and no leaks since.