re-positioning 400 fuel pipes

[ANDYM]

Im currently in the process of restoring the rear part of the chassis, front and middle already finished and looking excellent! I am fitting a new swirl pot and performance fuel filter and want to replace existing hoses with high pressure stainless braided.Looking at the positioning of the main feed pipe i always thought it was a bit dodgy being on the outside of the outrigger, i was thinking of replacing the copper pipe with braided hose and running it along side the return pipe on the inside of the outrigger or alternatively run both pipes down the backbone into the engine bay.Anyone re-routed their pipes or any thoughts on this?

[sevans]

Well I am re routing them away from the backbone to the N/S sill. The reason for this is that it will get hot in the middle of the backbone and could cause fuel vapourisation in the lines.
I think the early wedges had them running down the backbone, they were moved to the sill on the later cars.
Cheers SteveE

[shpub]

The backbone is a real no-no as the exhaust heat did cause vapouraistion problems and of course there is the matter of an increased fire risk.

Steve

[ANDYM]

Thanks guy's, glad I asked the question as fuel vaporisation had never occured to me! inside of the chassis rail it is then.

[Danny Hoffman]

They run down the backbone of my 350i - never had any vapourisation probs

Danny

[Nacnud]

My pipes were moved to the tunnel during the recent rebuild. No vapourisation problem seen since despite taking part in Parade des Pilots. At Le Mans, a lot of TVRs were suffering fromn the heat which limited their ability to lay rubber for the crowds. Only problem I had was throwing the alternator belt at high revs - not heat.

The outriggers are extremely vunerable on the SEAC with not even a bit of pretend body for protection. Earlier wedges are much better in this respect. One of my outriggers was actually punctured right next to the fuel line !!!!!!!

[JMorgan]

They went down the tunnel of me 350 and no problems but I can see the point of sprinkler and hot exhaust.

[shpub]

I know they went down the middle but TVR changed it after a couple of incidents where they found that the tunnel heat was causing a problem and allegedly, after a couple of cars caught fire. Don't know how true this is. I mount the pipes inside a braided steel rubber pipe and run them down the inside of the outrigger. That way they stay cool, are easy to get at and check, are protected by the outrigger and piping and are far far away from the exhaust.

They have survived many a crash in the car so far.
Steve