v6 cams

Started by sassanach, 25 August 2013, 22:01:19

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sassanach

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.

VXL V6

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.


Darth Loo-knee

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
Everything to do with Omega's. Breaking, Servicing from Cambelts to Oil Changes... Please Pm me for details...

Marks DTM Calib

It will run but not at its optimum.

sassanach

Quote from: Marks Hornby Scape Goat on 26 August 2013, 11:57:23
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.

Nick W

 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.

Darth Loo-knee

Are the multi rams both working? If not some of the sparkle can go plus, mpg will suffer :y
Everything to do with Omega's. Breaking, Servicing from Cambelts to Oil Changes... Please Pm me for details...

2woody

Quote from: VXL V6 on 26 August 2013, 01:02:16
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.

pauls

I have 3ltr cams in my 2.6 it shows at the top end of rev range. Dont know about hp though
..

2woody

dyno plot at all ?

chrisgixer

Quote from: Darth Groomer, Bum Improver on 26 August 2013, 21:49:10
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.

sassanach

Quote from: chrisgixer on 27 August 2013, 22:59:21
Quote from: Darth Groomer, Bum Improver on 26 August 2013, 21:49:10
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

Marks DTM Calib

Quote from: 2woody on 26 August 2013, 23:32:19
Quote from: VXL V6 on 26 August 2013, 01:02:16
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.

symes

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
1998 volvo 940 turbo 225bhp +1965 Rover 5000 v8+ 1962 ford consul 375 lowrider