The V8 Owners Forum -

Guys,

I have had Megasquirt fitted to my LR 90 for some time now running spark only (MS1 Extra v3 board running EDIS), in preparation for going Efi within the next couple of months I am looking at getting together all the little odds and ends that will be needed for the swap.

Can anyone recommend a good place to get an efi fuel filter, and some injection hose at a decent price? Also what size hose will I need, 5/16"?

This will all be fitted to a RV8 flapper top end on my 3.5 if that makes any difference at all.

Fuel is being pumped from the standard underseat tank using a modified (extended to reach bottom of tank) in-tank pump from a Range Rover Classic.

Cheers!

May not be quite the same as my TVR Griffiths engine is in a kit car but I have used a standard EFI Range Rover filter from Halfords. It's pretty large and I can give you the code if you want.

If you mean a pre-pump filter, then I looked everywhere to get one at reasonable cost that actually had a large bore. Found on at darkmutton.com for £19.00

If you want a simple efi filter with push on 8mm fittings. Most Subarus up til 05 or so used a good one. Should be less then a tenner at most motor factors.

http://www.ebay.co.uk/itm/Subaru-Imprez ... 4ce477a0c5

If you go to a breakers you can get the handy little bracket that holds it too, mounted on the left side strut tower.

I would not use this filter before the pump though, as that is not where it is intended to be used.

http://www.fuelpumpsonline.co.uk/8mm-fu ... -371-p.asp and http://www.cbsonline.co.uk/product/Fuel ... 2%29_FUHO8 whatever fuel hose you choose make sure its spec'd for FI use and avoid the cloth over braided- stuff like the plague regardless of whatever anyone tells you, fuel filter wise VW GOLF EFI models 87> mk2/3 about £6 from most motor factors this is the filter used by TVR on the Griffith and Chimaera models and it suitable for 8mm I.D fuel hose

The Sytec price isnt that bad at all for hose.

stevieturbo wrote:The Sytec price isnt that bad at all for hose.

Purchased quite a bit of this some time back seems good quality so far 2 years + most important on TVR V8 cars as it's a bitch to change

Quagmire wrote: and some injection hose at a decent price? Also what size hose will I need, 5/16"?

This will all be fitted to a RV8 flapper top end on my 3.5 if that makes any difference at all.

You need 7.6mm fuel hose. Check out the Burlen Fuel Systems links on this web page

http://www.vintagemodelairplane.com/pag ... tor01.html

Get your fuel filter from any yellow pages motor factor or from Halfords.

Not sure about going for "decent price" on the hose, because that depends upon if you decide to get the cheapest - for RV8 Efi fuel hose - not a good idea as the fuel pump maximum pressure can go to 50psi if the FPR croaks and the top end of an RV8 Efi below the plenum chamber gets bloogy hot, so go for a reputable supplier.

ramon alban wrote: Not sure about going for "decent price" on the hose, because that depends upon if you decide to get the cheapest - for RV8 Efi fuel hose - not a good idea as the fuel pump maximum pressure can go to 50psi if the FPR croaks and the top end of an RV8 Efi below the plenum chamber gets bloogy hot, so go for a reputable supplier.

Maybe you didnt read that the Sytec hose listed has a rated working pressure around 145psi. 50psi wont pose any problem at all.

8mm is as close to 5/16 as makes no odds.

Although Gates does make two different efi hoses. Seems the stuff they get in the US ( ie 5/16" ) is much better quality than the Euro 8mm equivalent.

Although both are rated and safe for efi. Just the US stuff is far better hose if you can get it.

Thanks for all the replies chaps- I'll checkout the Sytec hose and bang on a standard LR Efi filter.

As to "Decent" price- I specifically did not say cheap for the very reason Ramon stated!

I have had issues before with (what turned out to be) poor quality fuel hose giving me pinhole leaks and they were scary enough with carb fuel pressures!

Iwas checking mine earlier and remembered the name Codan, i searched the web and found it here
http://www.locostbuilders.co.uk/viewthr ... tid=151490
which lead on to this
http://www.volksbolts.com/faq/fuelhose.htm
and i use the big efi land rover filter, just needed to get some suitable tails to screwin

And change it every five years.

Ian

Yowser! So need the SAEJ30R9 stuff.

Will look for some of that.

Cheers!

Pirelli, Goodyear, Codan, Sytec are all quality fuel hose brands, and as mentioned never skimp on quality fuel hose its not like its costly anyway i think there as been a few TVR RV8 cars lost through neglect of this part

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.

Think you were very unlucky Ramon - I bought my EFI in '89, and had the original injectors up until recently. The feed and return ones were changed about 2000 when I fitted a different regulator in a non standard position.
If only the coolant ones were as good.