Manifold insulator alloytec vz-ve

[az_sv6]

has any1 got one of these insulators from mace?

[WogBoyz]

Ive got them on my Ecotec and they work pretty dam well, from what ive read on other threads ect they seem to work really well with the Alloytecs too

[az_sv6]

so my manifold wont look like that pic its just the gasket like insulators that are different?

[2005vzute]

where the gasket is in between your plenum and inlet manifold that will be removed and replace with a insulator...instead of your really thin gasket, you get a 12mm? insulator...thats how it will look if you take it off the engine, but otherwise i highly doubt you will see it with it on the engine..unless you look really close or something

[Torquative]

you wont see it when the inlets back on, all hat happens is the plastic engine covers buldge a bit because they no longer fit on properly.

I have them installed, cant comment if they worked or not tho because when we installed them we did a host of other things to such as a custom tune and ch anged the 140 000kay old spark plugs with fresh ones!

I'll assume they work, the insulator is like a thick piece of cork so I can't see why not, although the inlet manifold does still get hot after alot of stop/start driving like peak hour.

[az_sv6]

well mace clams an extra 10% bottom end, so i guess for $150 bucks it couldn't hurt to give it a go.

[impulsive]

I raced another VZ very similiar mods as mine, untuned.. he had them on his car and i still beat him, he was in an auto got close to my time (15.53) with a 15.58.. technically i would assume the auto would be quicker with a stock motor and a couple of bolt ons then a manual with a stock motor and couple of bolt on's. So this backs up my theory they do absolutely nothing, where they get the 10% bottom end beats me.

Both cars are series 1 alloytecs, similiar km..

[WogBoyz]

auto loses more power tho through the tranny, when i first got my ute i raced my mates manual both totally stock same model and he won by a few car lengths

[torana355]

Wheel and Motor both had the Auto at 15.3 1/4 and the manual at 15.1 1/4. So the manual is quicker when launched well. The only real way to see if the insulator works would be a before/after dyno test. Without Dyno proven results i wouldn't waste my Money on it. Just like the OTR for the Alloytecs, useless when measured on the dyno.

[Torquative]

if anything it had free gasket goo which I needed to put the inlet manifold back on when I changed the spark plugs!

[impulsive]

lol free gasket goo at $120..

i mean the auto should be purely and simply a better launching vessel.. Either way, manual or auto i think my theory still proves there useless

[Torquative]

and I'm not disagreeing ;P

as I said I cant comment despite having them because I noticed a change, but heck that could have just been fresh spark plugs doing the work!

I know that the tune we put in was affected by the insulators though, it had to be modified to suit so they did something

[impulsive]

so with a tune, tuned correctly they can achieve the 10%? i hope for everyones sake there is something in them

[impulsive]

Wheel and Motor both had the Auto at 15.3 1/4 and the manual at 15.1 1/4. So the manual is quicker when launched well. The only real way to see if the insulator works would be a before/after dyno test. Without Dyno proven results i wouldn't waste my Money on it. Just like the OTR for the Alloytecs, useless when measured on the dyno.

Its much harder to get the launch right in a manual, thus 9/10 the Auto will be quicker on the launch, especially when im driving lol. Where did wheels and motor get those stats from?

[wiz000]

i put it on mine and im stoked with it, didnt notice at first but after abot 2 days i reset the computer and it seemd to have just got some balls.
could never get the wheels to spin now its not a problem, bit better throttle responce and a deeper note from it. good buy for the price i think

[az_sv6]

i would have thought it would only be useful for long periods of driving, buy keeping the manifold cool.
i mean how does it have more give from fitting larger gaskets?
sorry if i sound naive but i guess rubber speaks louder than words sometimes.

[BullittSV6]

Remember that air condenses when it gets cooler.
So the theory, as per COLD AIR INTAKE MANIFOLD INSULATOR ALLOYTEC VZ-VE - Mace Engineering Group is that by keeping the manifold cooler, more air - referred to as the manifold charge - enters the engine.

There's also some dyno results on that page if anyone is interested.

[az_sv6]

im looking at getting me these insulators but iv never removed an alloytec manifold before.
i just remove the engine cover, air intake pipe and the bolts and it comes straight off? nothing to look out for when doing this?

[az_sv6]

well iv just put in for these insulators.
good write up on the how to install on mace site, shouldn't be to hard... i hope.

[Dz811]

how on earth could an auto be a better launching platform? the ratios are usually longer, and manuals are a direct drive to the wheels, so minimal loss. Autos sap power from your car to change gear for you (obviously its more complicated than that, but thats the idea).
Autos can't stall up engine revs to aid in the launch either.

With a working clutch and a semi-talented driver, the manual should launch just as well if not better, and stay ahead for as long as it needs to.

Unless you've got a super racing double-clutch porsche or ferrari gearbox which is designed to launch and change gears in the blink of an eye, in the real world of 13-17 second cars,manuals are by the far majority quicker

[torana355]

how on earth could an auto be a better launching platform? the ratios are usually longer, and manuals are a direct drive to the wheels, so minimal loss. Autos sap power from your car to change gear for you (obviously its more complicated than that, but thats the idea).
Autos can't stall up engine revs to aid in the launch either.

With a working clutch and a semi-talented driver, the manual should launch just as well if not better, and stay ahead for as long as it needs to.

Unless you've got a super racing double-clutch porsche or ferrari gearbox which is designed to launch and change gears in the blink of an eye, in the real world of 13-17 second cars,manuals are by the far majority quicker

lol, mate autos are by far the better launching platform. All Top Fuel, Prostreet, funny cars and the quickest street cars are fully manualised autos mate. Also have you not heard of a stall converter lolz??? You can put in a higher stall in a serious drag car, for example my old Torana had a 4k stall converter.

[greenacc]

Remember that air condenses when it gets cooler.
So the theory, as per COLD AIR INTAKE MANIFOLD INSULATOR ALLOYTEC VZ-VE - Mace Engineering Group is that by keeping the manifold cooler, more air - referred to as the manifold charge - enters the engine.

There's also some dyno results on that page if anyone is interested.

Remember that air flows through your intake very quickly, so its not going to have much time to heat up or cool down before it gets into the engine unless your manifold is glowing hot. Obviously on a long drive or at a track day your manifold will get quite hot thought. And if that was how they work then a cold engine with or without an insulator would make exactly the same power.
I'm pretty sure there is some aerodynamic theory that says air flows faster and smoother through a longer 'pipe' than a short one and faster flowing air means more air going into your engine, which is why these spacers are so thick .... to make your intake runners longer as well as insulation.

[wortus]

Remember that air condenses when it gets cooler.
So the theory, as per COLD AIR INTAKE MANIFOLD INSULATOR ALLOYTEC VZ-VE - Mace Engineering Group is that by keeping the manifold cooler, more air - referred to as the manifold charge - enters the engine.

There's also some dyno results on that page if anyone is interested.

The air gets denser as temperature drops becaue the molecules are less excited and are not moving around as much, colliding and hence further apart. I wouldn't say it condenses as such. Colder air produces a denser charge, more mass of oxygen per given volume of air entering the engine so the engine will ask for more fuel to get the air to fuel ratio correct and more fuel = more power as burning more fuel produces more heat.
Taking heat out of th eintake charge is also what an ontercooler does on a forced incuction system as compresing the air or the air/fuel mixture heats it up.

[Dz811]

lol, mate autos are by far the better launching platform. All Top Fuel, Prostreet, funny cars and the quickest street cars are fully manualised autos mate. Also have you not heard of a stall converter lolz??? You can put in a higher stall in a serious drag car, for example my old Torana had a 4k stall converter.

pretty sure i did say quite clearly, that in the REAL WORLD of street legal cars... manuals are quicker... So i would quite openly acknowledge that dedicated drag cars would be quicker as autos with highstalls. (and by the way, top fuel drag cars have 2 speed differentials, no gearbox). BUT! as i say again, unless you have much more expensive double clutchy launch controly auto gearboxes which are only in the realm of 10-12 seconds and a kajillion dollars.... in the REAL WORLD of 13+ second cars, manuals are by the far majority quicker.


End Rant

[richardpalinkas]

just input to these manifold insulators, arnt they meant to give more bottom end torque because they increase the runner length? i remember reading that if you increase the runner lengths that the torque curve gets better at low RPM. correct me if im wrong?