alloytec vs. sidi

[vicarious]

so the time has come to upgrade the ute to a wagon and would like some opinons on those that have gone from alloytec to a 3.6sidi and do they find it a noticable change and any pro's con's. I would like a v8 however with all the problems that i have heard with afm and the lifters i will hold off for a while, will most likely go the v8 route with the vf release in a few years when they may rework the v8 engines.

[WogBoyz]

Get an 08 or 09 manual v8 as there the L98, no problems at all with mine

[mad macks]

I gotta VZ SVZ 2007 ute with STD 187KW and also a Series 2 Sidi SV6 ute both are 6 speed manuals.
VZ engine has more torque at low( 2,000RPM) revs
This probably makes it a better engine as a workhorse

The VE2 is much more rev happy and keeps going until rev limiter (6,700 RPM i think)
I much prefer the SIDI engine as it is a smooth free reving engine by comparison
I average 10.8 L/100 KM with the VZ and about he same with VE SIDI
I drive the VE 11 like its a large sports car
I am suprised that they made a big vehicle to be so much fun to drive

[kuzman89]

I'd only go the alloytec if it was manual, the SIDI alloytecs have a much better auto.

[HussySV6]

I Own a VE sv6 ALLOYTEC. and i raced sidi and there bout the same.

But if your thinking of doing few engine mods ( intake, exhaust ) the sidis are harder to find. i what i heard

Also mate , the AFM only applys if the car is an auto.

Btw mate , can i ask why you would spend money on a sportwagen?

Hope this helps.

Hussy.

[Munz]

so the time has come to upgrade the ute to a wagon and would like some opinons on those that have gone from alloytec to a 3.6sidi and do they find it a noticable change and any pro's con's. I would like a v8 however with all the problems that i have heard with afm and the lifters i will hold off for a while, will most likely go the v8 route with the vf release in a few years when they may rework the v8 engines.

The HSV R8 tourer should be your choice.......... if it was cheaper and no issues with LS3

[UFO]

i think there's a huge difference between the old alloytec and SIDI's, but its not just the engine- its the drivetrain update too. The new 6 speed it lightyears ahead of the old clunker.

you'll love the wagon too.... best car I've ever owned (but make sure you get reverse camera).

[Jarp]

I Own a VE sv6 ALLOYTEC. and i raced sidi and there bout the same.

But if your thinking of doing few engine mods ( intake, exhaust ) the sidis are harder to find. i what i heard

Also mate , the AFM only applys if the car is an auto.

Btw mate , can i ask why you would spend money on a sportwagen?

Hope this helps.

Hussy.

Couldn't let this go sorry...it's all bollox. The same mods are available for the SIDI as are for the Alloytec as essentially they are the same engine bar the fuel injection system and AFM is V8 only.

Edit: Sorry I must correct myself there and apologise to HussySV6 as the 3 litre SIDI is different because the exhaust manifold port is just a single outlet in each bank as apposed to the 3 in each bank of the 3.6 litre....soz.

[HussySV6]

Well obviously i dont know for FACT that that is true, hence me saying "is what i heard" Coz my mate has one and he just bought a vcm intake and needed to get an adapter to make it work.

Also when i know AFM is only for V8 , i was answering the secound part of his question.

Sorry if the my statements are false , its just what i was told, i own a alloytec.

Hussy.

[Cameron P]

Well obviously i dont know for FACT that that is true, hence me saying "is what i heard" Coz my mate has one and he just bought a vcm intake and needed to get an adapter to make it work.

Also when i know AFM is only for V8 , i was answering the secound part of his question.

Sorry if the my statements are false , its just what i was told, i own a alloytec.

Hussy.

then why are you giving the OP information if you dont know?

[UFO]

Btw mate , can i ask why you would spend money on a sportwagen?

Because utes and sedans are for pussies!!!

runs away before flaming starts

[vicarious]

the reason why i want a sportwagon is that i'm not a fan of sedans its either a ute or a wagon, the ute has served me well but seeing that i have changed jobs and no longer require a ute and can't fit in the dog & rego is shit loads in SA cause its classed as commercial.

[Wongy295]

The sportswagons are gorgeous.

[TinSnips]

Because utes and sedans are for pussies!!!

runs away before flaming starts

[scouser king]

and that's the bottom line cause stone cold said so,sorry i had too.

[DJRandom]

sportswagons are the best wagons out there they look heaps good

[kuzman89]

I Own a VE sv6 ALLOYTEC. and i raced sidi and there bout the same.
Hussy.

Don't mean to break your balls man. But I doubt it. Manual vs Manual may be abit closer, or even if yours was a manual vs an auto. But from what I've seen the SIDI's are a good bit of kit!

[Rufys]

Surprised nobody's mentioned the issues with the Alloytec engine's timing chains stretching. Main reason I'd stay away from an Alloytec.

What is the new 6 speed auto Holden are dropping into the Commodore? Is it the ZF Ford are using? Because it's one of the best 6 speed autos available - a sensational box. It's getting to a point in auto technology where it's hard to justify buying a manual any more.

[kuzman89]

The problem was rectified after 2007 I believe. So if you buy an alloytec after that date it shouldn't be issue.

[Fekason]

I have had two Ecotec (VS II and VY II), one Alloytec (MY09 SV6) and now one Sidi (MY11 SV6). All have been manuals.

Ecotec had the best low down torque, but was not a clean revver.

The MY09 initially was a disappointment, but after the 10K service was a changed car. It was much more tractable at low RPM than previously. It had maximum torque of 340 NM at a low 2,600 RPM, but moonshot gearing giving less than 2,000 RPM at a true 110 KPH. On the open road, it regularly would need a change down to climb hills when the VS and VY had not. However, I ended up preferring the Alloytec by a significant margin.

A mate later bought a VE II Ute and gave me a test drive. I was sold and, because I was able to organise an amazing deal, soon updated to a VE II SV6. As others have said, the Sidi engine revs cleanly and smoothly compared to either Ecotech or Alloytec. It's maximum torque of 350 NM comes at a slightly higher 2,900 RPM (still lower than most engines), but lower gearing (about 2,200 RPM at 110 KPH) means that the car feels more tractable in all gears and the slightly higher RPM doesn't impact in any way because of the better nature of the engine. It also rarely needs to change down gears on the open raod. I went to Canberra recently heavily laden and left cruise control on at the speed limit the whole way. On one hill, the speed dropped 3 KPH for a short distance but picked it back up with 100M or so. Other than that, cruise speed was held the whole way. My engine only had 7K at the time, so should also get better.

I am sold on the Sidi in comparison to the Alloytec. Granted my cars were all manuals, but the better auto in the VE II added to the 3.6 Sidi would be a no-brainer if it had to be an auto.