Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: sassanach on 25 August 2013, 22:01:19
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if you inadvertently swapped the inlet and exhaust cams on a 3.0 v6,would it run?the reason I ask is basically my my 3.0 elite seems a tad sluggish and im struggling to find anything wrong with it.
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http://www.omegaowners.com/forum/index.php?topic=90500.0 (http://www.omegaowners.com/forum/index.php?topic=90500.0)
Well it would definitely make a difference as the inlet is a G Cam and the exhaust is an A cam on a 3.0.
On a 2.5 or a 2.6 the Inlet is also an A cam and it's known that putting G cams in place of them can gain 15 - 20 BHP (VX did this on the 2.6 Vectra B GSi's) so I guess the valve open duration must be longer.
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I came across a V6 where someone had got an inlet cam and a exhaust cam the wrong way around, it ran but a little lumpy... hope that helps
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It will run but not at its optimum.
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It will run but not at its optimum.
it runs smoothly enough,it just seems to have lost its sparkle,its mpg is down a shade too,im convinced it was a lot quicker before I ran out oif talent a few months ago.only two things have changed,i did the head gaskets because I cooked it ,and I put a new exhaust on.
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I was impressed with mine when I got it, but the cambelt change improved it considerably. Correcting the cam timing as it was a tooth out on all four cams made it run smoother, stronger and more economically.
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Are the multi rams both working? If not some of the sparkle can go plus, mpg will suffer :y
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On a 2.5 or a 2.6 the Inlet is also an A cam and it's known that putting G cams in place of them can gain 15 - 20 BHP (VX did this on the 2.6 Vectra B GSi's) so I guess the valve open duration must be longer.
Vx did this on the Vectra GSi, yes, but that was with a management system to suit.
its doubtful if this is going to yield many extra ponies on an Omega. I dyno'd a 2.6 once with 3.0 cams and this lost HP.
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I have 3ltr cams in my 2.6 it shows at the top end of rev range. Dont know about hp though
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dyno plot at all ?
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Are the multi rams both working? If not some of the sparkle can go plus, mpg will suffer :y
That was my first thought. But I'm sure Mr Nach would have checked that.
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Are the multi rams both working? If not some of the sparkle can go plus, mpg will suffer :y
That was my first thought. But I'm sure Mr Nach would have checked that.
sure did,according to the guides there working perfectly
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On a 2.5 or a 2.6 the Inlet is also an A cam and it's known that putting G cams in place of them can gain 15 - 20 BHP (VX did this on the 2.6 Vectra B GSi's) so I guess the valve open duration must be longer.
Vx did this on the Vectra GSi, yes, but that was with a management system to suit.
its doubtful if this is going to yield many extra ponies on an Omega. I dyno'd a 2.6 once with 3.0 cams and this lost HP.
We observed the opposite with Mick Dundee's, when he replaced the goosed exhaust it improved further.
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inlet cams are different profile---you going to have to put it right--am not guessing--fact----stripped enough of the v6s to know---it will run but not right--why do you think VX label them it aint for fun :y :y :y