do the adjustable cam gears add hp as soon as you install them or do they have to be tuned

 

I think that goes against the VVT ...

 

it doesnt, the supra has cam gears that up hp when tuned and it has vvt as well

 

my bad, so are there cam gears for our engine? what increase do they have?

 

i dont think any yet, we need cams first to make full use

 

JBP has some says it fits all ECOTEC motors
http://www.jbodyperformance.com/new/...catName=JP0889

 

someone should try them out

 

This is weird thing with VVT. But in essence if you advance the cam gears 5 degrees, the computer I think will still see as 0 degrees so the computer will adjust timing as normal but it will still be 5 degrees advanced. I think thats the right explanation otherwise the motor would just compensate for cam gears and there would be no benefit. But for full benefit of cam gears you need cams.

 

so in otherwords their basically useless to us?

 

It depends on if the computer senses that you've advanced the cam and retards it back to stock. If it doesn't then cam gears would be a cheap mod but if it does, then your better off programming the computer to advance the cams so you don't rip into your motor and just tune it.

 

To answer the question..

Cam gears offer two basic improvements.

1. If they are lighter, the rotational mass will be less, (Like a Flywheel)
2. For any benifit to be made, they would have to be adjusted. They give you the ability to run stock for daily driving and then change the power curve when you want it.

I would not recomend any major timing changes for "Daily Driving"

any time you make a change to timing, you will loose reliability and comfort, plus with VVT it will more than likely not have the effect that you are looking for.

VVT is basically " Factory Automatic Timing Gears "

 

so its somewhat pointless getting cam gears for the 2.4 then

 

Your gains would be minimal unless you went very extreme on the timing alterations, then you would loose alot of "Street Driveability" and possibly cause yuor ECU to trigger Limp mode and loosing HP in the end..

So I guess, Yes would have worked.

 

well if a company were to make us some factory replacements that were alot lighter and a reasonable price i would pick them up for a few more ponies

 

They usually run $250.00... I have a set and they do alter the engine quite a bit.

Bascially. I don't think that they can be used on a SS SC 2.0L because it's a timing chain and you would have no way to make adjustments to it once installed.

 

Adjustable gears would work just fine a 2.0L. I have them on my 2.2L. Those engine don't have VVT. They wouldn't work on the 2.4L of course because of the VVT. I got them to help with the tuning of my turbo. They are concealed under the timing cover, but that is an easy thing to remove in order to access the gear.

 

no cam gears will work for the 2.4

you cant compair the supra to the 2.4 eco vvt

and most guys with supras dont have their vvt after they install cam gears

 

Adjustable cam gears will need to be tuned. You will run into problems with the engine managment system, possibly. Adjusting the cams,advance or retarding, changes the torque curve of the motor. By advancing the cam timing, you will lower the rpm of peak torque. By retarding the cam timing you will raise the rpm of peak torque and therefore raising horsepower, torque times rpm, divided by 5252= HP. For normal driving you will have less low end, off the line torque, idle quality and drivability will suffer.

 

But the motor already makse the most of the cam timing with the VVT. Your statement is now null and void.

 

What?



Basically, the VVT works like an "automatic variable cam gear"

They would do nothing but mismanage your engine.

 

Thats wat i said.

 

^^ Coo