wombat
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| posted on 12/11/11 at 06:26 PM |
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St170 Fuel Rail Part Identity?
Can someone tell me what the part is between injectors 2 n 3 on the fuel rail?
Also, what wiring do I need to keep from the rail/injectors for running GSXR ITBs on Megasquirt?
Thanks in advance
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pjay
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| posted on 12/11/11 at 06:38 PM |
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Looks like the fuel pressure regulator.
You need to keep at least the injector plugs and cables. Not sure what other cables there'd be on the fuel rail if it's the original.
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lotusmadandy
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| posted on 12/11/11 at 06:41 PM |
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As above, it looks like the fuel pressure reg
to me.
It looks like mine but on mine its on the end of
the rail.
Andy
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coozer
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| posted on 12/11/11 at 06:57 PM |
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Its NOT a fuel regulator, its a pulse sensor. The ST170 has a smart fuel pump that maintains the fuel pressure by way of an electrical sensor where
your barb is. The ST170 doesn't have a return fuel pipe instead uses the sensor to maintain pressure.
I flattened the end and welded it up.
1972 V8 Jago
1980 Z750
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lotusmadandy
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| posted on 12/11/11 at 07:25 PM |
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You live and learn
Andy
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big-vee-twin
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| posted on 12/11/11 at 11:27 PM |
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The item in the middle acts like a shock absorber smoothing out the pulses from the pump it has a vacuum connection so when you put you foot down the
diaphram adjusts to the fuelline pressure.
I know this because I took one apart for fun!!
I also used the 'shock absorber' mount on the rail to provide a return connection I machined a billet alluminium replacement with a 10mm
through connection.
[img]
 
[/img]
[Edited on 12/11/11 by big-vee-twin]
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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rhinopower
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| posted on 13/11/11 at 08:21 AM |
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Sod using the st170 fuel rail, use the standard blacktop instead, it mounts in the same way
Is this going onto an st170 engine?
I had this setup made costing ~£400 using toyota 4age bodies, an st170 laser cut inlet flange etc. Works very well!
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big-vee-twin
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| posted on 13/11/11 at 05:17 PM |
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£400 sounds like a lot of money mine was half that
[img]
 
Throttle Bodies on Duratec
[/img]
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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wombat
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| posted on 13/11/11 at 06:13 PM |
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ST Conversion
Thx for feedback folks, I intend to use the standard rail and make a return on the end as per the picture using an hydraulic type fitting.
Looks like I need to blank off the shock absorber then.
Idea came from the following http://www.sportingfords.com/forums/viewtopic.php?f=16&t=1960attached
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scutter
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| posted on 13/11/11 at 06:43 PM |
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I'd have to agree with rhinopower on this one, the standard 2.0L blacktop rail works a treat and only costs about £25 inc injectors.
ATB Dan.
The less I worked, the more i liked it.
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pjay
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| posted on 13/11/11 at 06:56 PM |
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Stand corrected on the FPR. Took a closer look at the Duratec round section fuel rail with one of the damper thingies - later rectangular section
rails don't have this.
Big-Vee-Twin - nice piece of work converting it to a fuel return!
Rhinopower/Scutter one other advantage with the standard fuel rail is the built in Schrader valve (can't see one in Wombat's picture).
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rhinopower
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| posted on 13/11/11 at 09:41 PM |
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The scharder valve is particularly useful for me as that's where I take my takeoff for nitrous oxide.
Big-vee-twin. - yeah yours is no doubt cheaper like a lot of people's, however mine is port matched for the st170's larger ports, using
laser cut flanges for the head and bodies. There is no off the shelf manifold for a st170. There are no steps in the inlet tract like using bike
bodies on a st170 lower plastic flange. I challenge anyone to build a better flowing throttle body inlet for a zetec
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Bizarro
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| posted on 28/11/11 at 07:35 PM |
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So is this a fuel pressure regulator on the end of my Ford fuel rail?
 
fuel rail
I assumed it was but now im a bit confused!!
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lotusmadandy
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| posted on 28/11/11 at 07:53 PM |
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quote:
Originally posted by Bizarro
So is this a fuel pressure regulator on the end of my Ford fuel rail?
fuel rail
I assumed it was but now im a bit confused!!
Yes,that is definately a pressure regulator on the end of the rail.
Mine is exactly the same.
Andy
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Bizarro
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| posted on 28/11/11 at 10:14 PM |
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quote:
Originally posted by lotusmadandy
Yes,that is definately a pressure regulator on the end of the rail.
Mine is exactly the same.
Andy
Thanks Andy...confusion over, Ill carry on as before.
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