Topic: 3.0 V6 Engine Plenum; What's the diffirent's!!! (Read 4886 times)

Jim · « **on:** 28 August 2006, 15:14:14 »

I have a 1996 3.0 v.6 omega elite and I was wondering what is the diffirent's between the grey engine plenum which is fitted to my car and the engine plenum fitted to later cars which seems to be longer and more curved and shorter hoses to connect them, does it make a diffirents to BHP

Kev · « **Reply #1 on:** 28 August 2006, 15:14:55 »

It means mine's is bigger than yours.

rpont · « **Reply #2 on:** 28 August 2006, 16:06:53 »

Quote

I have a 1996 3.0 v.6 omega elite and I was wondering what is the diffirent's between the grey engine plenum which is fitted to my car and the engine plenum fitted to later cars which seems to be longer and more curved and shorter hoses to connect them, does it make a diffirents to BHP

It's not just the plenum that's different , they are bigger engines - 2.6 and 3.2. They are also drive by wire so they don't have an accelerater cable, and they don't have an idle control valve so they don't need to have a squarish front

hotel21 · « **Reply #3 on:** 28 August 2006, 16:09:56 »

Quote

Quote
I have a 1996 3.0 v.6 omega elite and I was wondering what is the diffirent's between the grey engine plenum which is fitted to my car and the engine plenum fitted to later cars which seems to be longer and more curved and shorter hoses to connect them, does it make a diffirents to BHP
It's not just the plenum that's different , they are bigger engines - 2.6 and 3.2. They are also drive by wire so they don't have an accelerater cable, and they don't have an idle control valve so they don't need to have a squarish front

Sorry, thats not quite correct.

My 1998 MV6 3.0 has the elongated/droop plenum. It came in, I think, at mini-facelift, and across the engine range. And mine is old style cable (and cruise), not fly by wire.

Someone else more clever than what I is will no doubt explain better why....

TheBoy · « **Reply #4 on:** 28 August 2006, 16:17:51 »

Droop snoop fitted to post mini facelift 3.0/3.2 engines...

rpont · « **Reply #5 on:** 28 August 2006, 17:45:10 »

Quote

Quote
It's not just the plenum that's different , they are bigger engines - 2.6 and 3.2. They are also drive by wire so they don't have an accelerater cable, and they don't have an idle control valve so they don't need to have a squarish front

Sorry, thats not quite correct.

My 1998 MV6 3.0 has the elongated/droop plenum. It came in, I think, at mini-facelift, and across the engine range. And mine is old style cable (and cruise), not fly by wire.

Someone else more clever than what I is will no doubt explain better why....

I stand corrected. I've only see the drooping plenum on the later engines (2.6/3.2). Is there a pic of yours anywhere so that I can see what it looks like and where the ICV is placed?

Kev · « **Reply #6 on:** 28 August 2006, 17:54:18 »

Quote

Quote
Quote
It's not just the plenum that's different , they are bigger engines - 2.6 and 3.2. They are also drive by wire so they don't have an accelerater cable, and they don't have an idle control valve so they don't need to have a squarish front

Sorry, thats not quite correct.

My 1998 MV6 3.0 has the elongated/droop plenum. It came in, I think, at mini-facelift, and across the engine range. And mine is old style cable (and cruise), not fly by wire.

Someone else more clever than what I is will no doubt explain better why....
I stand corrected. I've only see the drooping plenum on the later engines (2.6/3.2). Is there a pic of yours anywhere so that I can see what it looks like and where the ICV is placed?

Mine's is the facelift with the 3.0 not the 3.2, and it has the extended/drooping plenum. Still has cables for accelerator and cruise.

I've got pics on my home PC, but i'm down South at the moment. If no-one else posts a pic, i'll do it for you when i get back home.

I think the question Jim wanted to know is whether there would be any benefit in changing the setup to the same as mine as he too has the 3.0 but it's pre-facelift, with the shorter plenum. Better performance/torque?

hotel21 · « **Reply #7 on:** 28 August 2006, 18:08:07 »

Robbed these from e-bay

HtH

Broocie

Jim · « **Reply #8 on:** 28 August 2006, 18:47:36 »

Quote

Robbed these from e-bay

HtH

Broocie

These picture's are also borrowed from eBay they show a 3.0 v6 similar to mine;

you can see who it differ's from the later 30.v6, but I beleive that both engine's are x30xe's is this correct?

So what's the diffirence? more power?

Jim · « **Reply #9 on:** 28 August 2006, 18:49:49 »

Quote

Quote
Quote
Quote
It's not just the plenum that's different , they are bigger engines - 2.6 and 3.2. They are also drive by wire so they don't have an accelerater cable, and they don't have an idle control valve so they don't need to have a squarish front

Sorry, thats not quite correct.

My 1998 MV6 3.0 has the elongated/droop plenum. It came in, I think, at mini-facelift, and across the engine range. And mine is old style cable (and cruise), not fly by wire.

Someone else more clever than what I is will no doubt explain better why....
I stand corrected. I've only see the drooping plenum on the later engines (2.6/3.2). Is there a pic of yours anywhere so that I can see what it looks like and where the ICV is placed?
Mine's is the facelift with the 3.0 not the 3.2, and it has the extended/drooping plenum. Still has cables for accelerator and cruise.

I've got pics on my home PC, but i'm down South at the moment. If no-one else posts a pic, i'll do it for you when i get back home.

I think the question Jim wanted to know is whether there would be any benefit in changing the setup to the same as mine as he too has the 3.0 but it's pre-facelift, with the shorter plenum. Better performance/torque?

Thank You Kev for making my question more clearer, it's good to have a Fairy God Mother looking over me

rpont · « **Reply #10 on:** 28 August 2006, 19:38:43 »

Sorry to distract everyone fro the original question - I can't answer it though. I did find the pictures very interesting. Only the old one had cruise control fitted and it didn't have that second aux water pump.

Jim · « **Reply #11 on:** 28 August 2006, 20:03:33 »

Quote

Sorry to distract everyone fro the original question - I can't answer it though. I did find the pictures very interesting. Only the old one had cruise control fitted and it didn't have that second aux water pump.

Both engine's have cruise control, it's just fitted further forward next to the inlet chamber's

TheBoy · « **Reply #12 on:** 28 August 2006, 20:07:45 »

No difference to cruise fitting as stated, just slightly further forward due to longer plenum. AFAIK, no difference performance wise, and seeing as only fitted to 3.0/3.2 probably just balances the intake on the larger engines a little better...

rpont · « **Reply #13 on:** 28 August 2006, 21:29:10 »

Quote

Quote
Sorry to distract everyone fro the original question - I can't answer it though. I did find the pictures very interesting. Only the old one had cruise control fitted and it didn't have that second aux water pump.
Both engine's have cruise control, it's just fitted further forward next to the inlet chamber's

I can't see the second cable for the cruise control. I did find a pic on eBay of one where I can see it and it doesn't have the second aux pump but I don't know how to post a pic.

TheBoy · « **Reply #14 on:** 28 August 2006, 21:31:36 »

If its a 3.0l and there is not a 2nd throttle cable for cruise, then the car doesn't have cruise!

Jim · « **Reply #15 on:** 28 August 2006, 21:34:24 »

Quote

If its a 3.0l and there is not a 2nd throttle cable for cruise, then the car doesn't have cruise!

Agreed

Admin · « **Reply #16 on:** 28 August 2006, 21:37:19 »

The longer plenum is exactly as Jaime stated. It is to allow smoother intake of air.
It was one of a number of small improvements made to the engine at the end of 1997.
They also changed the oil cooler, balancer shafts and various little things that Geff can list better than me.

Kev · « **Reply #17 on:** 28 August 2006, 21:40:01 »

Quote

Quote
Quote
Sorry to distract everyone fro the original question - I can't answer it though. I did find the pictures very interesting. Only the old one had cruise control fitted and it didn't have that second aux water pump.
Both engine's have cruise control, it's just fitted further forward next to the inlet chamber's
I can't see the second cable for the cruise control. I did find a pic on eBay of one where I can see it and it doesn't have the second aux pump but I don't know how to post a pic.

I think when Jim says 'Both engine's have cruise control, it's just fitted further forward next to the inlet chamber's', he's not refering to the pics posted, but in fact to his own car and my facelift.

Both our cars have the X30XE, both have cruise, he has a 'wee' plenum, but mine is bigger, the extended version.

You are correct about the posted pics though, they do not show the cruise cable.

So, both having the same X30XE engine, would Jim be able to fit the extended plenum, how difficult would it be, and would there be any additional benefit?

Mark?

Jim · « **Reply #18 on:** 28 August 2006, 21:42:56 »

Quote

Quote
Quote
Quote
Sorry to distract everyone fro the original question - I can't answer it though. I did find the pictures very interesting. Only the old one had cruise control fitted and it didn't have that second aux water pump.
Both engine's have cruise control, it's just fitted further forward next to the inlet chamber's
I can't see the second cable for the cruise control. I did find a pic on eBay of one where I can see it and it doesn't have the second aux pump but I don't know how to post a pic.
I think when Jim says 'Both engine's have cruise control, it's just fitted further forward next to the inlet chamber's', he's not refering to the pics posted, but in fact to his own car and my facelift.

Both our cars have the X30XE, both have cruise, he has a 'wee' plenum, but mine is bigger, the extended version.

You are correct about the posted pics though, they do not show the cruise cable.

So, both having the same X30XE engine, would Jim be able to fit the extended plenum, how difficult would it be, and would there be any additional benefit?

Mark?

You hit the nail right on the head there Kev

TheBoy · « **Reply #19 on:** 28 August 2006, 21:46:16 »

It would be possible - new plenum, air intake bits (they're shorter). Not sure if EGR mounting is same.

Doubt there would be any noticable difference in performance, so probably not worth the effort. Remember the droop snoops are a PITA when working on car, as things like cambelt etc require plenum removal on this type...

Kev · « **Reply #20 on:** 28 August 2006, 21:47:03 »

Cheers Jaime. [smiley=thumbsup.gif]

Jim · « **Reply #21 on:** 28 August 2006, 21:59:22 »

Cheers

Markjay · « **Reply #22 on:** 01 September 2006, 00:44:15 »

A closer look at a 1999 3.0L long-beak....

Markjay · « **Reply #23 on:** 01 September 2006, 00:46:15 »

..and at a 2001 2.6L FBW...

Markjay · « **Reply #24 on:** 01 September 2006, 00:48:13 »

Note no EGR, Throttle cable, ICV, or HT leads on the FBW (also no DIS, no secondary oxygen pump... but you can't see it from here)... a joy to work on, spark plugs change takes half the time with much less to get out of the way.

Jim · « **Reply #25 on:** 01 September 2006, 08:53:02 »

Quote

Note no EGR, Throttle cable, ICV, or HT leads on the FBW (also no DIS, no secondary oxygen pump... but you can't see it from here)... a joy to work on, spark plugs change takes half the time with much less to get out of the way.

Cheers,Many Thanks for the info

Omega-MV6 · « **Reply #26 on:** 01 September 2006, 14:26:38 »

As we are submitting Pictures.. here is mine 3.0L 98' Lump...

Cheers

Matt

Andy B · « **Reply #27 on:** 01 September 2006, 15:36:10 »

Ooow! You've got a short one Matt!

Omega-MV6 · « **Reply #28 on:** 01 September 2006, 16:03:49 »

Quote

Ooow! You've got a short one Matt!

I thought I had quite a long one actually...

Keep thinking of getting an Monaro Stylee bonnet vent, and slaping 2 cone filters straight onto the TB.....
I will have to do away with the MAS, and the possibly the first set of inlet baffles.... but wouldn't it look awsome.... 8-)

Cheers.

Matt

Jim · « **Reply #29 on:** 02 September 2006, 09:26:42 »

Quote

Quote
Ooow! You've got a short one Matt!

I thought I had quite a long one actually...

Keep thinking of getting an Monaro Stylee bonnet vent, and slaping 2 cone filters straight onto the TB.....
I will have to do away with the MAS, and the possibly the first set of inlet baffles.... but wouldn't it look awsome.... 8-)

Cheers.

Matt

That would be nice, love to see soon pic's is you get it done [smiley=cool.gif]

sounds2k · « **Reply #30 on:** 02 September 2006, 12:04:44 »

if you look to the left of the throttle body, there is a second cable which arcs to the left and back down again - that's the cruise control unit at the end of it! (under the coolant expansion tank), so that car DOES have cruise control ...

Jim · « **Reply #31 on:** 02 September 2006, 12:49:00 »

Quote

if you look to the left of the throttle body, there is a second cable which arcs to the left and back down again - that's the cruise control unit at the end of it! (under the coolant expansion tank), so that car DOES have cruise control ...

Many thanks

Kev · « **Reply #32 on:** 02 September 2006, 13:25:45 »

Quote

..and at a 2001 2.6L FBW...

Mark, there is something seriously wrong with that 2.6.

All the plenum bolt covers are in place. There should be, at the very least, one of them missing. I though that was standard on a V6.

Markjay · « **Reply #33 on:** 02 September 2006, 15:04:36 »

Quote

Quote
..and at a 2001 2.6L FBW...

Mark, there is something seriously wrong with that 2.6.

All the plenum bolt covers are in place. There should be, at the very least, one of them missing. I though that was standard on a V6.

LOL, When I got the car back from Vx following camblet change, two of the dust caps were missing. This is what it looked like, I took this ficture while still at the garage:

I gave them hell, and since they could not find them anywhere in the workshop I made them order a couple of new ones for me which I collected a few days later!

Kev · « **Reply #34 on:** 02 September 2006, 19:05:08 »

Quote

Quote
Quote
..and at a 2001 2.6L FBW...

Mark, there is something seriously wrong with that 2.6.

All the plenum bolt covers are in place. There should be, at the very least, one of them missing. I though that was standard on a V6.

LOL, When I got the car back from Vx following camblet change, two of the dust caps were missing. This is what it looked like, I took this ficture while still at the garage:

I gave them hell, and since they could not find them anywhere in the workshop I made them order a couple of new ones for me which I collected a few days later!

Doesn't matter how many times they are replaced, they seem to always go missing! Must be the raw power from the V6.

egcc · « **Reply #35 on:** 03 September 2006, 18:29:52 »

Quote

..and at a 2001 2.6L FBW...

Hi Markjay, was wondering if you knew where the heater vacuum pipes were on a 2.6 2001 model, my heater turns cold, and some members indicate the pipe/s may be at fault.

regards Dave (not very good under the bonnet).

Timbuk · « **Reply #36 on:** 03 September 2006, 18:38:16 »

Quote

Quote
..and at a 2001 2.6L FBW...

Hi Markjay, was wondering if you knew where the heater vacuum pipes were on a 2.6 2001 model, my heater turns cold, and some members indicate the pipe/s may be at fault.

regards Dave (not very good under the bonnet).

Best thing to do Dave is follow the instructions i put for the 2.5 on the heater thread you just looked at, once you've located the vac pipes via the indication arrow.

News:

Author Topic: 3.0 V6 Engine Plenum; What's the diffirent's!!! (Read 4886 times)