When I bought my 1986 Twin Plenum in 1993 it was 7 years old and even at that tender age the OE fuel hoses were leaking at their jubilee clips.
Bad quality hose, poor assembly or over-tightened? Perhaps even a combination of all three. Who knows?
Whatever, it was a constant issue, until eventually in 1996 I decided, enough already.
At that time, I was doing top-end maintenance including injector cleaning and overhaul, so at that point I chose to replace all the fuel hoses with the product previously mentioned, plus the fuel hose clips, injector pintle caps and filter baskets, also in the same Burlen list.
So,10 years from new, with the fuel hoses leaking and deteriorating alarmingly, they were all replaced with the new stuff.
From 1996 to current time, another 15 years, I have never had to cure a single fuel leak, in particular, anywhere around the fuel rail, the worst of the very hot locations.
Could be down to just the quality of the hose, perhaps the clips are more suitable (twice as many too - so more risk - on the injector stub), plus better quality fitting. Whatever?
From this image of fuel hose on my TP taken recently, you can see there is no apparent deterioration even after 15 years.
The one to the left is for the CSI and the one to the right, nearly hidden and more vulnerable to the heat issues, is on an injector.
As mentioned previously, and recognising that all high pressure fuel hose will carry a manufacturers specification well in excess of 50 psi, there are, in my opinion, some pretty harsh temperatures below an RV8 plenum chamber and in the case of the Rover OE fuel hose it was clearly not up to the job even tho' it would have been pressure rated well in excess of the maximum need.
I don't know if the stuff I fitted was better than other stuff available at the time, but I'm pleased I spoke to, and chose it from a reputable supplier.
and the top end of an RV8 Efi below the plenum chamber gets bloogy hot, so go for a reputable supplier.
