L5W
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| posted on 9/4/11 at 04:07 PM |
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Fuel route check
Hi,
I've been trying to complete the fuel circuit on my indy build today and looking for the best place to mount the regulator and high pressure
fuel filter, this is what I've come up with:
Before I start drilling holes in the battery tray to mount the regulator and filter, does the hose, T piece and general positions look ok? Is there a
better way of doing this? (Ignore the braided hose as I'll be changing this to non-braided hose with markings for IVA)
Cheers,
Lee
http://l5w-mk-indy-zetec.blogspot.com/
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phoenix70
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| posted on 9/4/11 at 04:12 PM |
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I assume your using Fuel Injection?
if so, the fuel pipe from the pump should go directly into the injector rail, and the regulator should be on the return pipe to the tank, that how you
maintain pressure in the fuel rail, no T-Pieces are need.
The route should be HP Pump - HP fuel Filter - Fuel Rail - Regulator - Return to tank
Cheers
[Edited on 9/4/11 by phoenix70]
[Edited on 9/4/11 by phoenix70]
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Ben_Copeland
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| posted on 9/4/11 at 05:04 PM |
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ignore that, i didnt see your return
[Edited on 9/4/11 by Ben_Copeland]
Ben
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DRC INDY 7
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| posted on 9/4/11 at 05:04 PM |
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quote:
Originally posted by phoenix70
I assume your using Fuel Injection?
if so, the fuel pipe from the pump should go directly into the injector rail, and the regulator should be on the return pipe to the tank, that how you
maintain pressure in the fuel rail, no T-Pieces are need.
The route should be HP Pump - HP fuel Filter - Fuel Rail - Regulator - Return to tank
Cheers
[Edited on 9/4/11 by phoenix70]
[Edited on 9/4/11 by phoenix70]
as above but put the fuel filter between the tank and feed into the fuel pump no need for a filter after the pump that way
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Puddle Dodgers Club
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ed1801
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| posted on 9/4/11 at 05:05 PM |
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Unless you are using a dead headed fuel rail, in which case the above looks correct. Saying that, if you have the connections one with a return
prevents bubbles forming when idling in traffic. I switched from your setup to a return one as I was having problems with this.
I might try to stick the filter near the pump at the fuel tank so that there are less connections right above your feet to break and douse them in
petrol.
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Ben_Copeland
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| posted on 9/4/11 at 05:30 PM |
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Where did you get the filter mount and pressure reg?
Ben
Locost Map on Google Maps
Z20LET Astra Turbo, into a Haynes
Roadster
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MikeRJ
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| posted on 9/4/11 at 06:42 PM |
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Is that blue plastic T piece suitable for high pressure fuel at typical underbonnet temperatures?
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SeaBass
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| posted on 9/4/11 at 06:47 PM |
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Yep - ditch that blue plastic thing - it'll only age and fracture. Also what spec is that hose. It looks a bit "classic" to me like
they use on VW campers that keep catching fire.
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big-vee-twin
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| posted on 9/4/11 at 07:05 PM |
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Fuel filter needs to be before the pump to protect it from Crap in the tank
Duratec Engine is fitted, MS2 Extra V3 is assembled and tested, engine running, car now built. IVA passed 26/02/2016
http://www.triangleltd.com
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SeaBass
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| posted on 9/4/11 at 07:28 PM |
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quote:
Originally posted by big-vee-twin
Fuel filter needs to be before the pump to protect it from Crap in the tank
Most OE installs have a simple strainer pre pump. Injection pumps don't like having resistance on the input.
I wouldn't put anything too restrictive before the pump. The cars I've plumbed haven't used anything pre pump and they've been
fine.
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L5W
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| posted on 9/4/11 at 07:28 PM |
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quote:
Originally posted by Ben_Copeland
Where did you get the filter mount and pressure reg?
Fuel Pressure Regulator with Gauge Universal Fit BLUE | eBay UK
The filter mount is two 50mm Terry clips which I got from ebay
quote:
Originally posted by MikeRJ
Is that blue plastic T piece suitable for high pressure fuel at typical underbonnet temperatures?
I could have sworn this was suitable with fuel but, I've just checked the listing again and no word of fuel resistance is mentioned. Will try
and find a suitable alternative. Ta for pointing this out, I wouldn't have checked otherwise,
quote:
Originally posted by big-vee-twin
Fuel filter needs to be before the pump to protect it from Crap in the tank
This is what I have under the tank, a low pressure filter before the pump. I read on here somewhere that putting a second filter after the pump can
prevent the injectors getting damaged should the pump start to disintegrate.
cheers
Lee
[Edited on 9/4/11 by L5W]
http://l5w-mk-indy-zetec.blogspot.com/
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DRC INDY 7
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| posted on 9/4/11 at 07:53 PM |
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If you use abig fuel filter then you will not get any problems acts like a mini fuel tank plus it will be 12 mm feed in and out as opposed to 8mm
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Puddle Dodgers Club
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Ben_Copeland
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| posted on 9/4/11 at 08:08 PM |
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Does the filter and pump need to be under the tank? looks a little exposed
Ben
Locost Map on Google Maps
Z20LET Astra Turbo, into a Haynes
Roadster
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matt_gsxr
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| posted on 9/4/11 at 09:16 PM |
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So, you have:
A filter before the pump (good as long as it isn't restrictive)
A filter after the pump (standard OEM practice)
A dead head fuel supply (not ideal in theory but actually seems to work)
I had dead head and it worked fine, actually it is the standard for those Suzuki TBI's and fuel rail. As we know changing away from dead head
is a pain if you want to reuse the stock fuel rail.
As stated by others, not sure about hose, or T-piece (you can get brass T-pieces merlin
merlin_T_pieces). You might need a few more clamps, or
change the locations of things, to stop the hose waving about.
Seems like a pretty fair set-up to me.
Matt
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L5W
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| posted on 9/4/11 at 11:27 PM |
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Thanks Matt, it was your reply in one of my previous threads that convinced me to go the dead head fuel rail route, provided I swap out the plastic T
piece for a brass version as mentioned. the pics in the first post are just mocks ups to check the route and connections, the hose will be replaced
with a non-braided, marked up version hose for IVA using new hose clamps.
Thanks all 
Lee
http://l5w-mk-indy-zetec.blogspot.com/
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SeaBass
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| posted on 11/4/11 at 08:26 PM |
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lol - Spot the numptie who couldn't read your original post - me! Just seen your original comment about the hose spec.
JC
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