Adjustable FPR's - Engines Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: Adjustable FPR's

cwspellowe

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Post #1

Just a few general questions about fitting one really, having seen Yanni fitted an adjustable one for his home-brew project i'm weighing up options.

How would an adjustable FPR be fitted? Would it come with some kind of attachment to go in place of the standard FPR and divert fuel to the adjustable one? Or would it be placed in-line with the injectors?

Common sense would tell me it wouldn't work on the fuel feed line as the original FPR would just siphon off the extra pressure anyway, but what if one was connected to the fuel return line?

Just curious Smile

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Posted 21st Jan 2011 at 04:44

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bigbadbowen

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Post #2

ok first question is why ?

you can change the original FPR to 4 bar version anyway using the original housing anyway just drop out the old one and slap in the new one Smile

Posted 21st Jan 2011 at 04:55

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cwspellowe

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Post #3

This isn't a definite, this is purely going of Yanni's work where he swapped in an adjustable and went with approx 3.8bar fuel. May not need to do it but would be nice to understand the logic behind it.

I've seen the 4bar regs, such as the VR6 ones, but if the optimum fuelling was lower than 4bar wouldnt that mean the car would constantly overfuel?

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Posted 21st Jan 2011 at 04:57

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bigbadbowen

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Post #4

What are you trying to achieve then ? If you have a std engine then whats the point ?

If you wanted an adjustable you would have to change the fuel rail and put an adjustable FPR in - no point having the std one in as well as the adjustable ???

Posted 21st Jan 2011 at 05:03

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cwspellowe

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Post #5

Its not going to be standard, R1 throttle bodies are going on. Thinking of options to prevent it running lean at top end.

As said, Yanni went for upping the fuel pressure when he did his itb conversion

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Posted 21st Jan 2011 at 05:05

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bigbadbowen

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Post #6

cwspellowe wrote:

You will need to ditch the std FPR then Wink

Jenveys usually run about 4bar no idea about R1 tbs ? - just out of interest what size are they ?

40's 45s ?????????? something else ??????????

Posted 21st Jan 2011 at 05:11

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cwspellowe

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Post #7

42 or 43mm iirc, can't remember of the top of my head Dunno

I know they'll need mapped but it's a case of whether or not the standard reg will be up to the fuelling after mapping. Am guessing not if Jenveys run 4 bar, have my eye on a 4bar VR6 FPR that could be up to the job

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Posted 21st Jan 2011 at 05:13

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bigbadbowen

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Post #8

cwspellowe wrote:

42 or 43mm iirc, can't remember of the top of my head Dunno

You can get FPR that can be adjusted from anywhere bud ? no need to get a VR6 one think tweeks sell em etc Wink

Posted 21st Jan 2011 at 05:18

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ryangti6

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Post #9

I think he means the VR6 one as a straight swap 4 Bar one (like you first suggested)

I think the standard fuel pressure those
tb's run at is 3 Bar.

I know Yanni's thread is a good guide but also have a look on the locost builders website, you should find anything you may need to know on there.

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Posted 21st Jan 2011 at 05:31

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welshpug!

Capt Pedantic

Location: Bigend, Wales.

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Post #10

no need, just get it mapped properly at 3 bar, seeing as you are using a chopped std manifold all the stock stuff will stay.like fuel rail injectors etc.

standard injectors flow more than enough for the standard engine on bodies.

there is no substitute for a mapping session.

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Posted 21st Jan 2011 at 23:36

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chris with a pug

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Post #11

Have a look in Daveyboys project thread he used a ajustable one. Think it was a freebe though. looks cool

Posted 22nd Jan 2011 at 00:40

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chris with a pug

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Post #12

There you go

Posted 22nd Jan 2011 at 00:45

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ryangti6

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Post #13

chris with a pug wrote:

Have a look in Daveyboys project thread he used a ajustable one. Think it was a freebe though. looks cool

He was running jenveys though which if Bowen is correct they run at nearer 4 bar so will need one.

As Welshpug has said using standard rail and injectors he should be fine at 3 bar.

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Posted 22nd Jan 2011 at 00:52

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daveyboy

aka Jim Davey

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Post #14

Mine was done at 3.5 bar. I only suggested using an adjustable FPR and Air/Fuel ratio meter as a VERY short term way of avoiding running lean on bodies until you can get it professionally mapped.

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Posted 22nd Jan 2011 at 01:35

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cwspellowe

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Post #15

daveyboy wrote:

Mine was done at 3.5 bar. I only suggested using an adjustable FPR and Air/Fuel ratio meter as a VERY short term way of avoiding running lean on bodies until you can get it professionally mapped.

This ^^

I have to drive something like 300 miles to Wayne so don't want it running lean, especially as it'll all be motorway 3-4k RPM kind of speeds.

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Posted 22nd Jan 2011 at 02:48

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chrisd306

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Post #16

chris, ive got an adjustable 1 you can have for free mate since im a nice guy lol

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2003 BMW M3 & 2009 L200 Raging Bull
& Audi Q5 S Line
AX stock rod & Saxo Stock rod
Sold the bike an charged rallye an bought a caravan, midlife crisis or what!

Posted 22nd Jan 2011 at 03:05

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cwspellowe

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Post #17

Ah awesome cheers mate Thumbs up

You can give it me while you change my clutch LOL

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Posted 22nd Jan 2011 at 03:05

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chrisd306

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Post #18

im confused as i dont work on 306 except my own one! and ive got plenty to do to it mate, would be after i was mapped before id let you use my tools and garage to do your clutch lol

________________________________________

In my garage just now

2003 BMW M3 & 2009 L200 Raging Bull
& Audi Q5 S Line
AX stock rod & Saxo Stock rod
Sold the bike an charged rallye an bought a caravan, midlife crisis or what!

Posted 22nd Jan 2011 at 03:08

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cwspellowe

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Post #19

Damn, it's totally dead so might have to borrow someone to help me.

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Posted 22nd Jan 2011 at 03:09

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chrisd306

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Post #20

im to busy when i get of this job, may have my car ready sooner tho but i wont be home for another 10days anyway

________________________________________

In my garage just now

2003 BMW M3 & 2009 L200 Raging Bull
& Audi Q5 S Line
AX stock rod & Saxo Stock rod
Sold the bike an charged rallye an bought a caravan, midlife crisis or what!

Posted 22nd Jan 2011 at 03:13

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cwspellowe

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Location: Calderbank

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Post #21

Nah it's cool, contemplating paying someone to do it as it's far too cold to do myself haha

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Bye bye Sundance Kid Sad

Posted 22nd Jan 2011 at 03:14

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chrisd306

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Location: Perth Scotland

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Post #22

ouch, most garages will nail you 7hours labour at least lol

________________________________________

In my garage just now

2003 BMW M3 & 2009 L200 Raging Bull
& Audi Q5 S Line
AX stock rod & Saxo Stock rod
Sold the bike an charged rallye an bought a caravan, midlife crisis or what!

Posted 22nd Jan 2011 at 03:18

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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,839

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Post #23

drive down with std inlet, fit bodies when you get there, job jobbed Thumbs up

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 22nd Jan 2011 at 03:27

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chrisd306

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Location: Perth Scotland

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Post #24

that shouldnt be to hard to change at waynes?

________________________________________

In my garage just now

2003 BMW M3 & 2009 L200 Raging Bull
& Audi Q5 S Line
AX stock rod & Saxo Stock rod
Sold the bike an charged rallye an bought a caravan, midlife crisis or what!

Posted 22nd Jan 2011 at 03:32

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cwspellowe

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Location: Calderbank

Registered: 19 Jul 2009

Posts: 6,496

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Post #25

suppose its just a few bolts, some vacuum pipes and fuel rail. Stupid me never thought of that LOL

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Posted 22nd Jan 2011 at 03:33

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