Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: humbucker on 11 May 2009, 08:54:23
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is it worth fitting one of these in place of standard item and if so what gains or improvement in efficiency etc can i expect?
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No gains or improvement in anything although it will empty your pocket a little.
IF you are hell bent on fitting something like this then get a 3.7 Bar one for a 2.6/3.2 from Vx for less than what the likes of Regal and COurtney will con you for.
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No gains or improvement in anything although it will empty your pocket a little.
IF you are hell bent on fitting something like this then get a 3.7 Bar one for a 2.6/3.2 from Vx for less than what the likes of Regal and COurtney will con you for.
Still, surely no point in that, as the lamdas will trim back the fuelling anyway? Until the trim is right at one end of its abilities anyway...
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i am a bit confused... What are the supposed benefits then if youre saying that by adding this i wont see any difference? Been offered a bosch one for a tenner so thought it might be worth a punt?
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i am a bit confused... What are the supposed benefits then if youre saying that by adding this i wont see any difference? Been offered a bosch one for a tenner so thought it might be worth a punt?
The injectors are big enough on the omega to cope with fuelling demands without increasing fuel pressure.
Why do they sell it? Because people will buy it ;)
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with addition of cams/chips the 4.0 bar FPR would be more appropriate yes?
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with addition of cams/chips the 4.0 bar FPR would be more appropriate yes?
No....an FPR with increased pressure ratings will only ever overcome a problems with injectors that are running at mximum duration on WOT.....and the injectors have loads of headroom so you will be doing well to get to that point!
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ah so you wouldnt do any harm by adding one, it just is designed to cope with pressure that you probably wont reach on a standard omega setup?
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no point VVOC recommend them for the V6 Vectra to remove flatspots but a friend got one for his GSi and it still had a massive flatspot
your better off camming a 3.0V6 fitting 3,2 ex manifolds and then chip it & remove the exhaust centre sections thatll give a 3.0 a nice power increase and without spending stupid money thats about the most you can to do get more bhp with it
Forced insuction costs loads and as the comp ratio is fairly high nitrous would blow it to a million and one pieces i expect
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are the 3.2 exhaust mani's that big an improvement over the 3.0s....if they are i must try and hunt some down
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MDTM said they would improve things!
im buying some seems the avg price for them is £25 a side
the omega breaker on ebay sells em for this when i get paid ill be getting some!
they look interesting to fit! haynes reckons the engine must come out but ill wait and see!
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MDTM said they would improve things!
im buying some seems the avg price for them is £25 a side
the omega breaker on ebay sells em for this when i get paid ill be getting some!
they look interesting to fit! haynes reckons the engine must come out but ill wait and see!
£25 quid a side, not bad....
are you getting a RR before and after....would be interesting to see the improvements there like
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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 :(
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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
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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...ie....i stopped when my back wheels stopped on the rollers lol
@ markeymark - sounds good so far mate, though what are 4G cams?
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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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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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not gonna lie, im still lost mate! lol
lay it out simple lol
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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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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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HTH, ......
HTH ...... acronym for Hope That Helped! ;) ;) ;) :y :y
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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
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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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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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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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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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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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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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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)