Commodore 6's

bonspeed · 15-03-2007, 09:37 PM

howdy guys I'm having one of those work mate argument's and i'm hoping someone here can help me, I know its commodores but if you could help me out that would be great, OK here goes: Are the six cylinder 3.8 injected motors fitted in a vr to vy called an ecotec?

castek · 15-03-2007, 09:41 PM

vs up to vx i am 100% sure its ecotec. vn to vr was a buik 6. vz ues alloytec didnt they?

XRLightening · 15-03-2007, 09:42 PM

Quote:

Originally Posted by bonspeed

howdy guys I'm having one of those work mate argument's and i'm hoping someone here can help me, I know its commodores but if you could help me out that would be great, OK here goes: Are the six cylinder 3.8 injected motors fitted in a vr to vy called an ecotec?

As far as I know you are right

XR_Lightning · 15-03-2007, 09:43 PM

I think maybe VS series II was ecotec (I think series I wasnt, not 100% sure though) and up to VX as has already been said, got a mate with a VR II and it isnt ecotec

Smoke Pursuit · 15-03-2007, 09:49 PM

VS series 1 started ECOTEC

HgXR6T · 15-03-2007, 09:52 PM

I think VS series 1 through to VY series 2 was all ecotec.

VN to VS series 1 was buick.

Only VZ onwards is alloytec.

bonspeed · 15-03-2007, 09:52 PM

OK cool ill clarify a little more, said workmate owns a vr, I told him it had a ecotec in it and he said it didn't, Who's right?

I thought an ecotec was just a fancy cover holden put on the later motors to make them look different? mabee a different plenum too?

Homer1 · 15-03-2007, 09:55 PM

AFAIK its the same old hoary lump ie. Buick V6. Ecotec was just a name to make that lump sound more appealing

HgXR6T · 15-03-2007, 09:58 PM

I think power rose from 130 kw to around 147 kw with the ecotec. But lost some low down torque, or so say all the VN owners.

Had some different engine internals iirc. Something about being more effiecient and lowering emissions, probably just holden bs.

Quoted from wikipedia
http://en.wikipedia.org/wiki/Holden_VS_Commodore

"The new ecotec engine was not at its core the standard Buick V6 found in the VR. They started off with a totally new engine and only retained the dimensions of bore and stroke. The ecotec had 13% more power over the VR and 5% better fuel economy. The compression ratio was also increased from 8.5:1 on the VR to 9.4:1 on the VS. Also cross bolted mains are used in the ecotec with the same crank retained from the VR. The block was decked 1" and also the ecotec featured shorter, lighter rods with tin plated pistons and a floating pin design. The head design was revised greatly from the VR with the ECOTEC now features symmetrical ports with larger intake and exhaust valves. The end result was an engine that put out 147 kW, a 17 kW improvement on the VR, however the 0-100 km time of the new ecotec VS was only better than the VR's by 0.2 of a second."

bonspeed · 15-03-2007, 10:00 PM

Quote:

Originally Posted by Homer1

AFAIK its the same old hoary lump ie. Buick V6. Ecotec was just a name to make that lump sound more appealing

ha ha thats what i told him.

bonspeed · 15-03-2007, 10:02 PM

Quote:

Originally Posted by HgXR6T

I think power rose from 130 kw to around 147 kw with the ecotec. But lost some low down torque, or so say all the VN owners.

Had some different engine internals iirc. Something about being more effiecient and lowering emissions, probably just holden bs.

Quoted from wikipedia
http://en.wikipedia.org/wiki/Holden_VS_Commodore

"The new ecotec engine was not at its core the standard Buick V6 found in the VR. They started off with a totally new engine and only retained the dimensions of bore and stroke. The ecotec had 13% more power over the VR and 5% better fuel economy. The compression ratio was also increased from 8.5:1 on the VR to 9.4:1 on the VS. Also cross bolted mains are used in the ecotec with the same crank retained from the VR. The block was decked 1" and also the ecotec featured shorter, lighter rods with tin plated pistons and a floating pin design. The head design was revised greatly from the VR with the ECOTEC now features symmetrical ports with larger intake and exhaust valves. The end result was an engine that put out 147 kW, a 17 kW improvement on the VR, however the 0-100 km time of the new ecotec VS was only better than the VR's by 0.2 of a second."

Well looks like im wrong then, its got the same crank in it though.

bonspeed · 15-03-2007, 10:06 PM

Quote:

Originally Posted by bonspeed

Well looks like im wrong then, its got the same crank in it though.

Bugger bet my left nut on that one to.

redranga · 15-03-2007, 10:51 PM

I think it was called ecotec because it was the first commy to have sequential firing of the injectors which gives better economy

MethodX · 15-03-2007, 10:59 PM

From the book - Holden the classic models

VS- Commodore
Major modifications to the 3.8 litre 6 made it virtually a new unit.
Power was up 13%.
The engine had a new cylinder block and manifolds, reshaped cylinder heads, lightweight pistons and its compression ratio was increased to 9.4:1.
The engine was a good deal smoother than the VN unit.
Holden gave its 'new' V6 the anacronym ecotec, for emmissions and consumption optimisation TECHnology.

SPK-250 · 16-03-2007, 01:42 AM

It's actually VR series 2 that started the ECOTEC. VN up to series 1 VR had the early motors. The ecotec has shorter deck height, pistons and rods along with siamesed ports on the cylinder heads.

SpoolMan · 16-03-2007, 06:22 AM

My son has a VR series II 12/94 its not a ECOTEC.

Jeeepers · 16-03-2007, 06:59 AM

Whatever they are, 2 tried me last night. One each side of me.... Suckers.....

LTDHO · 16-03-2007, 08:24 AM

Ecotech came out in VS1.

If ya mate know Holdens, then he should know this.

I worked for a company that was working on the developement of some components back in early/mid 90's.

GXL078 · 16-03-2007, 10:17 AM

The ECOTEC was a revised engine that Holden had a lot of problems with when it was introduced. Used heaps of oil apparently due to "low friction internals" I believe. There are 4 cylinder GM motors are called ECOTEC as well, eg in the Vectra.

VQST80 · 16-03-2007, 01:22 PM

S1 VS ecotech was born.

It has a shorter stroke than the older buick engines

Go have a look at st comms for info..

Beetus · 16-03-2007, 04:44 PM

the ecotechs were also used in one one of the models that also uses the alloy tech, u can usually tell how by the badges, one will have "v6 alloytech" and some will have "v6" the ones with just the v6 are ecotech but they squezzed 152kw out of that one. ecotech started in the vs1, totally revised engine.

XR8-260 · 16-03-2007, 04:52 PM

Quote:

Originally Posted by Beetus

the ecotechs were also used in one one of the models that also uses the alloy tech, u can usually tell how by the badges, one will have "v6 alloytech" and some will have "v6" the ones with just the v6 are ecotech but they squezzed 152kw out of that one. ecotech started in the vs1, totally revised engine.

I think you are refering to the VY and VZ models. They both look similar but it is the VY that has the ecotec (152kw) and the VZ that has the alloytec (175/172kw).

Beetus · 16-03-2007, 05:04 PM

Quote:

Originally Posted by 3

I think you are refering to the VY and VZ models. They both look similar but it is the VY that has the ecotec (152kw) and the VZ that has the alloytec (175/172kw).

cheers wasnt to sure on that, probably cause i dont really care but yeh thanks.

BENT_8 · 16-03-2007, 05:35 PM

I think there is a difference in the badging of the 190 alloytec to the 175 too.

PoMmYwOG · 16-03-2007, 06:01 PM

being an ex commodore nut(i have seen the light) i can ensure you the ecotech came in from the vs series 1 up untill the last vy series 2. The ecotech IMO was a much better engine than the buick, i had a vp before my vs and the vs was much smoother and had heaps better top end , although the vp would launch harder off the line. The buick was a very rough engine, i had a vr next to me at the lights yesterday , damn it was noisy and rattly.

Ryan · 16-03-2007, 06:25 PM

Buick 3800s, Ecotecs meh.

As far as Im concerned, the best 6 to ever go into a Commodore, was the Nissan RB30.

I'm not biased though. hehehe

BENT_8 · 16-03-2007, 06:28 PM

Quote:

Originally Posted by Ryan

Buick 3800s, Ecotecs meh.

As far as Im concerned, the best 6 to ever go into a Commodore, was the Nissan RB30.

I'm not biased though. hehehe

Now that would have to be the most intelligent post today. :eclipsee_
I'll have one in white with the pop up front thanks

Gobes32 · 16-03-2007, 07:47 PM

If only Nissan had built the VL Calais instead of holden............ Would probably still own mine.

GXL078 · 16-03-2007, 08:07 PM

Quote:

Originally Posted by Ryan

Buick 3800s, Ecotecs meh.

As far as Im concerned, the best 6 to ever go into a Commodore, was the Nissan RB30.

I'm not biased though. hehehe

I wish I had a dollar for everytime I have said that.

Sladdo · 16-03-2007, 09:35 PM

The VN Series 1 3800 went the 'hardest' out of other Commodore motors. There have been reports a stock VN Series 1 3800 has beaten a VZ ALLOYTEC in a race & i wouldnt be surprised if it did. Also reports of VN's pulling 250Km/h stock without the speed limiter....

As with VR & VS, the VR had the Buick 3800 & the VS had the ECOTEC & having a VR & VS in the car yard i work at i can tell you the Buick 3800 in the VR is a harsher/louder motor than the ECOTEC & id rather a VR over a VS anyday. I love giving the VR a rev cause it sounds so beautiful. And having been in both cars when being revved at 5500rpm+ the VR seems to want more & more.