Jag AJ30 what fuel pump as no rail return

Jag AJ30 what fuel pump as no rail return

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Discussion

magpies

Original Poster:

4,037 posts

126 months

Friday 14th June
quotequote all
Hi I have fitted a Jag AJ30 which has a single fuel line to rail and no return line. Original Jaguar pressure control is computer cdriven. I'd like to run in tank pump but need advice.

magpies

Original Poster:

4,037 posts

126 months

Saturday 15th June
quotequote all
Hopefully a full 12v to the pump should give full flow and then a 3 port pressure regulator to sort every thing out and a return into the tank (connection already there)

Steve_D

12,470 posts

202 months

Sunday 16th June
quotequote all
Will you be running the original Jag ECU?
If so it may be expecting inputs from the fuel tank. Some systems have the fuel tank pressurised with associated sensors.

Steve

magpies

Original Poster:

4,037 posts

126 months

Sunday 16th June
quotequote all
Not running the Jag ecu. Was going to just feed with 12v via the Emerald K6 ecu and fit adjustable regulator with return to tank.

Chris-S

170 posts

32 months

Sunday 16th June
quotequote all
Quite a few options for pumps with self contained regulator and single output. Any of the Alfa 166 family, Lotus Elise/Exige. I mention those as I’m using a 166 engine etc and intended using the fuel pump but am using an Exige tank and it didn’t fit....so got an Exige pump wink. It’s the Toyota item so there’s that whole line to look at as well.

magpies

Original Poster:

4,037 posts

126 months

Monday 17th June
quotequote all
cheers for your suggestions.
I'm sticking with the Jag main pump and fitting a 3 port adjustable pressure regulator (not a cheap ebay one)
Running the excess into the connection that would have been used for the lift pump to main fuel tank. Also fitting a pressure sensor and dashboard gauge. I presume 3Bar is a good starting point?

andygtt

8,303 posts

208 months

Wednesday 17th July
quotequote all
simply run a fuel regulator T off the line to the fuel rail... the regulator then returns to the tank.

That's what a Noble does with an 044 or other bosch pump.

magpies

Original Poster:

4,037 posts

126 months

Wednesday 17th July
quotequote all
andygtt said:
simply run a fuel regulator T off the line to the fuel rail... the regulator then returns to the tank.

That's what a Noble does with an 044 or other bosch pump.
Cheers. ... yes that is as I've installed

andygtt

8,303 posts

208 months

Wednesday 17th July
quotequote all
Excellent then your all sorted.

I've actually changed to this engine in my Noble (as its only the heads that are different between it and the Jag), going for 1000bhp with it smile

pigeondave

208 posts

172 months

Thursday 18th July
quotequote all
andygtt said:
Excellent then your all sorted.

I've actually changed to this engine in my Noble (as its only the heads that are different between it and the Jag), going for 1000bhp with it smile
Is there a build thread for this.

Sorry for the hijack

andygtt

8,303 posts

208 months

Tuesday 30th July
quotequote all
pigeondave said:
andygtt said:
Excellent then your all sorted.

I've actually changed to this engine in my Noble (as its only the heads that are different between it and the Jag), going for 1000bhp with it smile
Is there a build thread for this.

Sorry for the hijack
I do have a thread about the car in readers cars on here