Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: olm on 11 June 2018, 03:27:04

Title: X30 block with y26 head
Post by: olm on 11 June 2018, 03:27:04
Hi, I have a Y26se engine and I wold like swap to x30xe, but, my engine has low milleage, and used x30 has high milleage, so I thought that use a x30 block, with new rings and bearings and use my heads with new gaskets, how would that be? Compression Ratio?
Title: Re: X30 block with y26 head
Post by: Doctor Gollum on 11 June 2018, 09:53:10
Waste of money, either fit the 3.0 with all the 2.6 electrical (sensors/coil packs/throttle) and call it done. Or if you are determined to spend money, by a crate 3.2 and fit that ;)

Bit of a moot point though, seeing as you're on internet rather than earth, so you won't be able to drive it ::)
Title: Re: X30 block with y26 head
Post by: Kevin Wood on 11 June 2018, 10:13:11
If you put 2.6 heads on a 3.0, you'll end up with a dangerously high compression ratio, IMHO.

Fit the 3.0 as it is with the 2.6 ancillaries and loom. Mile4age doesn't really trouble these engines.
Title: Re: X30 block with y26 head
Post by: omegod on 11 June 2018, 12:44:24
Daz did this to my cousins 2.6 when the bottom end went , 2.6 head on 3.0 block and it ran sweetly with no ill effects
Title: Re: X30 block with y26 head
Post by: tigers_gonads on 11 June 2018, 15:04:04
Daz did this to my cousins 2.6 when the bottom end went , 2.6 head on 3.0 block and it ran sweetly with no ill effects


As Kev sugested above, Daz fitted the 2.6 plenum and other DBW bits to the 3ltr block and ported head from Obi  ;)

And yes, it did go very well  :D :y
Title: Re: X30 block with y26 head
Post by: olm on 11 June 2018, 17:54:35
Daz did this to my cousins 2.6 when the bottom end went , 2.6 head on 3.0 block and it ran sweetly with no ill effects


As Kev sugested above, Daz fitted the 2.6 plenum and other DBW bits to the 3ltr block and ported head from Obi  ;)

And yes, it did go very well  :D :y

Yeah. And it runs with the 2.6 ECU?
Title: Re: X30 block with y26 head
Post by: Doctor Gollum on 11 June 2018, 20:15:44
Daz did this to my cousins 2.6 when the bottom end went , 2.6 head on 3.0 block and it ran sweetly with no ill effects


As Kev sugested above, Daz fitted the 2.6 plenum and other DBW bits to the 3ltr block and ported head from Obi  ;)

And yes, it did go very well  :D :y

Yeah. And it runs with the 2.6 ECU?
Pull the 2.6, remove the loom throttle body and sensors and fit them all to the 3.0. Fit the 3.0 and call it done.

That's the basics, obviously a cambelt kit would be a good idea. Also double check that the cylinder heads have the two bolt holes for the individual coil packs, post '98 3.0 have them :y
Title: Re: X30 block with y26 head
Post by: biggriffin on 11 June 2018, 21:29:19
Daz did this to my cousins 2.6 when the bottom end went , 2.6 head on 3.0 block and it ran sweetly with no ill effects


As Kev sugested above, Daz fitted the 2.6 plenum and other DBW bits to the 3ltr block and ported head from Obi  ;)

And yes, it did go very well  :D :y

Yeah. And it runs with the 2.6 ECU?
Pull the 2.6, remove the loom throttle body and sensors and fit them all to the 3.0. Fit the 3.0 and call it done.

That's the basics, obviously a cambelt kit would be a good idea. Also double check that the cylinder heads have the two bolt holes for the individual coil packs, post '98 3.0 should have them :y


Fixed,, some didn't, the early my2000,, 3.0L didn't.
Title: Re: X30 block with y26 head
Post by: Doctor Gollum on 11 June 2018, 21:49:36
Daz did this to my cousins 2.6 when the bottom end went , 2.6 head on 3.0 block and it ran sweetly with no ill effects


As Kev sugested above, Daz fitted the 2.6 plenum and other DBW bits to the 3ltr block and ported head from Obi  ;)

And yes, it did go very well  :D :y

Yeah. And it runs with the 2.6 ECU?
Pull the 2.6, remove the loom throttle body and sensors and fit them all to the 3.0. Fit the 3.0 and call it done.

That's the basics, obviously a cambelt kit would be a good idea. Also double check that the cylinder heads have the two bolt holes for the individual coil packs, post '98 3.0 should have them :y


Fixed,, some didn't, the early my2000,, 3.0L didn't.
Fair point... It was done for the Catera going dbw, plus various gm products which had that lump :y
Title: Re: X30 block with y26 head
Post by: olm on 12 August 2018, 07:26:09
Well, finally I have a x30xe. Itīs from vauxhall  :) and itīs curious because is from a 98 omega prefacelift but has long intake manifold as my y26se. Any problem with the two holes for the coil packs?
Title: Re: X30 block with y26 head
Post by: Doctor Gollum on 12 August 2018, 11:15:48
The problem would be that they are missing...

Pull a coil pack from the 2.6 and you will be able to compare directly  :y
Title: Re: X30 block with y26 head
Post by: olm on 12 August 2018, 12:06:39
I will see it soon then i will start with the swap. I do not think it's hard to adapt, right?
Title: Re: X30 block with y26 head
Post by: Doctor Gollum on 12 August 2018, 13:25:19
You need to know before you start.
Title: Re: X30 block with y26 head
Post by: Andy H on 12 August 2018, 17:47:45
Do the coil packs need the retaining bolts to give a good earth/0 volt path to the cylinder heads?

If not then the rubber boots will probably stop the coil packs from moving (much) :P
Title: Re: X30 block with y26 head
Post by: Doctor Gollum on 12 August 2018, 18:08:05
Do the coil packs need the retaining bolts to give a good earth/0 volt path to the cylinder heads?

If not then the rubber boots will probably stop the coil packs from moving (much) :P
They don't... But I wouldn't chance it...
Title: Re: X30 block with y26 head
Post by: olm on 12 August 2018, 18:38:52
And can't I put the valve cover from y26 on x30 heads? I remember read some this
Title: Re: X30 block with y26 head
Post by: Doctor Gollum on 12 August 2018, 18:41:11
And can't I put the valve cover from y26 on x30 heads? I remember read some this
You can, and will possibly need to...

The coil pack bolts screw into the head itself.

Remove one of your coil packs, compare and hopefully it will make sense  :y
Title: Re: X30 block with y26 head
Post by: olm on 12 August 2018, 19:29:04
And can't I put the valve cover from y26 on x30 heads? I remember read some this
You can, and will possibly need to...

The coil pack bolts screw into the head itself.

Remove one of your coil packs, compare and hopefully it will make sense  :y

:y I will keep you informed
Title: Re: X30 block with y26 head
Post by: olm on 19 August 2018, 07:03:08
Another question, my x30xe have the first part exhaust manifold, it will be able to connect with the 2.6 downpipe? Or do I need to mount full exhaust from the head?
Title: Re: X30 block with y26 head
Post by: biggriffin on 19 August 2018, 21:03:03
Use 2.6 manifolds, and 3.0L exhaust system, and downpipes, just grind 5mm off the 3.0L downpipe stub.
Title: Re: X30 block with y26 head
Post by: olm on 21 August 2018, 15:25:20
Use 2.6 manifolds, and 3.0L exhaust system, and downpipes, just grind 5mm off the 3.0L downpipe stub.

 :o Pre or facelift?