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Author Topic: 4.0 bar fuel pressure regulator on 3.0 v6?  (Read 3378 times)

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JamesV6CDX

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #15 on: 11 May 2009, 23:11:09 »
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i have just fitted facelift manifolds on mine complete with 4 g cams and 3.7 bar reg !
havnt had it on rollers yet but is a lot smoother and pulls much better !  :y

Will G cams in the place of "A" cams improve things then?
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markey mark

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #16 on: 11 May 2009, 23:12:19 »
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ive got a before from when i had the car chipped last yr running 221 with a Collins powerchip

local car tuning centre's dyno cant do RWD because saxo's/corsa's are FWD :(


what a load of balls....my omega was run on AWD rollers set for FWD's!

@ markeymark - sounds good so far mate, though what are 4G cams?

it is mate ! the 3.0 inlet cams you fit to the 2.5 i have got 4 g cams in mine so basically four high lift inlet cams !  :y
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miniator

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #17 on: 11 May 2009, 23:14:40 »
not gonna lie, im still lost mate! lol

lay it out simple lol
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Entwood

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #18 on: 11 May 2009, 23:25:05 »
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not gonna lie, im still lost mate! lol

lay it out simple lol

I'll try ....  :)

Engines burn a mixture of fuel and air by MASS (weight). The ECU will inject exactly the right mass of fuel for the amount of air by using the pressure, flow and timing of the injector open cycle to input the fuel. If the pressure is higher, the open time is reduced to compensate. Therefore the only time a higher pressure regulator would work is if the injector was fully open for its maximum time and you still had insufficient fuel. This does not happen on miggy's, so the high pressure regulator is pointless.

The amount of air getting into the cylinder is controlled by the size of the inlet hole and the length of time the hole is open. The time cannot be changed very much as the hole must be closed for the compression cycle, but it can be made bigger by using a "high lift" cam which does what it says, it opens the valve higher, so making the hole bigger( it also very slightly opens the valve for longer).

The "G" cams from the 3.0 will do this on the 2.5, so giving increased power (and reduced mpg), as more air = more fuel = more power.

HTH
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miniator

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #19 on: 11 May 2009, 23:50:17 »
ah right so the G refers to the cams fitted ot the 3.0's only....

HTH, thanks for the laying it out there but i already knew most of it. i should have specified that i was only confused ont he the naming of the different cams lol sorry.
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Andy B

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #20 on: 12 May 2009, 00:16:12 »
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.....
HTH, ......

HTH ...... acronym for Hope That Helped! ;) ;) ;) :y :y
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markey mark

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #21 on: 12 May 2009, 01:22:45 »
the 3.0 has two g cams on the inlet and 2 a cams on exhaust when you fit them to the 2.5 it gives higher lift therfore increaseing the amount of air/fuel mixture you can squeeze in ! so i have fitted four g cams in mine to get the gases out more efficently ! thats my thery anyway !  :y :y
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MutantCav

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #22 on: 12 May 2009, 07:51:28 »
Wouldnt the G cams increase the power anyway?? Need to get it on a rolling road to see what increase its all made as a whole...standard 2.5 168bhp, G cams should add 20Bhp ish so ex manifolds might add a bit perhaps??...have you got that stainless exhaust on too mate?
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Marks DTM Calib

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #23 on: 12 May 2009, 07:59:49 »
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the 3.0 has two g cams on the inlet and 2 a cams on exhaust when you fit them to the 2.5 it gives higher lift therfore increaseing the amount of air/fuel mixture you can squeeze in ! so i have fitted four g cams in mine to get the gases out more efficently ! thats my thery anyway !  :y :y


Sadly floored though as the G and A cams have the same lift, its just the G cams have a fractionaly longer duration.....which on an exhaust side will have little if any effect.
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MutantCav

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #24 on: 12 May 2009, 08:03:03 »
Cant hurt though lol :y Although personally I would have stuck just the 2 in and sold the other 2 :y
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Marks DTM Calib

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #25 on: 12 May 2009, 08:30:36 »
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Cant hurt though lol :y Although personally I would have stuck just the 2 in and sold the other 2 :y

Possibly wont hurt....questionable if it actually does anything at all though
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miniator

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #26 on: 12 May 2009, 10:33:36 »
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Quote
.....
HTH, ......

HTH ...... acronym for Hope That Helped! ;) ;) ;) :y :y

i had a little more to drink last night than i thought lol....sorry!

whilst were talking about cams....courtney or piper cams worth the £300 price tag (in exchange for the old ones) in a x30xe? was planning to fitting a set of either and getting dastek unichip come winter time
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markey mark

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #27 on: 12 May 2009, 12:38:18 »
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Cant hurt though lol :y Although personally I would have stuck just the 2 in and sold the other 2 :y

Possibly wont hurt....questionable if it actually does anything at all though

it certanly feels stronger mark  :y
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Marks DTM Calib

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Re: 4.0 bar fuel pressure regulator on 3.0 v6?
« Reply #28 on: 12 May 2009, 12:42:42 »
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Cant hurt though lol :y Although personally I would have stuck just the 2 in and sold the other 2 :y

Possibly wont hurt....questionable if it actually does anything at all though

it certanly feels stronger mark  :y

Must be down to another change then......the exhaust gases are all but gone shortly after the cam opens (just before the bottom of the power stroke)
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