Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: JamesV6CDX on 20 October 2009, 19:52:15

Title: 2.6 manifolds on a 2.5
Post by: JamesV6CDX on 20 October 2009, 19:52:15

Please can somone confirm, if the 2.6 manifolds are a direct fit to a 2.5 (obviously the SAI will be gone)

I know they'll fit the heads OK, but will the 2.5 downpipes/cats fit?

Lastly - if doing some porting and 3.0 cams in a 2.5 - is there any value to also fitting the larger 2.6 manifold?

Title: Re: 2.6 manifolds on a 2.5
Post by: Marks DTM Calib on 20 October 2009, 20:24:09

they do fit and they flow more freely.

You do need to cut the flange that the front pipe gasket sits around down by about 5mm

Title: Re: 2.6 manifolds on a 2.5
Post by: JamesV6CDX on 20 October 2009, 21:11:59

Cheers Mark

Do you think the improvements will be worthwhile?

Title: Re: 2.6 manifolds on a 2.5
Post by: JamesV6CDX on 20 October 2009, 21:12:20

Oh - and is it necessary to port the exhaust outlets on the head, as well as the inlets?