Adjustable cam pulleys

[jclau45]

How much beneficial if any is to keep the dual vvti working on the beams when boosting or is ti better to go with adjustable cam pulleys. I don remenber seen any of the top toyota projects like the supra that have vvti using them. Is there any real advantage?

[Roman]

VVTI is the ultimate form of an adjustable cam pulley already...

Keep it! waste of money downgrading to 'adjustable' pulleys.

Spend the $$$ on a good ECU to run it.

Powerfc is the way to go! plug and play.

A lot of really high hp cars dont necessarily use things like VVTI, because they're either dedicated drag cars in which it's irrelevant what the motor is like at partial load at 3500rpm, or are race cars in a series in which it is not allowed, or their cams are so big that moving it around much doesnt acheive a huge amount.

Keep it I reckon, unless you think the extra tuning costs are going to be more than the cost of adjustable pulleys. (Which take time to set up anyway)

You will have better performance off boost, when cruising, better fuel economy, possibly quicker spool up of turbo.

Late model Evos and the like run a VVTI type system to great effect.

[Protok]

There are adjustable pulleys which keep VVTi enabled........
Surely they could be used to a better effect?

[pasqual]

Originally Posted by Protok

There are adjustable pulleys which keep VVTi enabled........

are You sure about that ??? , Could You provide link to webpage ???


I dont see reason for that , simply You can adjust by VVt-i-pulley and use SA ecu ....

[Protok]

I don't know where it was I saw them but they were to fit both blacktop and redtop.

[Roman]

I'll put a fiver on that not being the case, as the VVTI mechanism IS the cam gear.

You're probably thinking about higher lift/duration camshafts.

TRD makes camshafts that work with VVTI still, or ones which suit having VVTI disabled. (In which case I think they sell 'adjustable' cam gears to replace the VVTI cam gears with)

[Protok]

I may be wrong but then a quick question; how do we adjust the exhaust camshaft?

[Roman]

Short answer is, you dont unless you've modified every other part of the motor first. But in that case, yep, adjustable cam gear on exhaust side.

[Protok]

I need to find the link for the vvti enabled cam gears cause otherwise its going to keep bugging me.
I think I shall get an exhaust side cam gear cause of the damned emissions and if I can save some petrol then why not :/

[jclau45]

here are 2 sites.

TODA Racing Adjustable Cam Pulley SXE10 Altezza 3SG

weksos industries

one is in usa and the other in japan. you can get the cam gears there.

[pasqual]

Originally Posted by jclau45

here are 2 sites.

TODA Racing Adjustable Cam Pulley SXE10 Altezza 3SG

weksos industries

one is in usa and the other in japan. you can get the cam gears there.

jclau45 you are right according BlackTop .

for Red/Grey-Top for exhaust, must use standard 3S-G(t)E pulley ( for celica or mr2 )

toda : TODA-14211-XE1-001

[jclau45]

If for the red top you guys might want to check this site


Alamo Motorsports--Orders over $150 Ship Free! they sell findanza adjustable camgears at a very good price. and they are of great quality. I bought 2 for mr2thinking they might fit the altezza but could not use them.

[Roman]

Originally Posted by Protok

I need to find the link for the vvti enabled cam gears cause otherwise its going to keep bugging me.

There is such a thing as a VVTI enabled cam gear... It's what is already on the motor, it is the crux of the whole operation.

Originally Posted by Protok

I think I shall get an exhaust side cam gear cause of the damned emissions and if I can save some petrol then why not :/

Unless you have non standard cams, then this is an atrocious waste of money and possibly horsepower.

[Roman]

P.S. Mr Jclau45, Do you have any more details about your car?

What sort of HP were you getting with the quad throttle setup?

[Servin]

Originally Posted by jclau45

here are 2 sites.

TODA Racing Adjustable Cam Pulley SXE10 Altezza 3SG

weksos industries

one is in usa and the other in japan. you can get the cam gears there.

The weksos link shows cam gears for the blacktop and also state removes VVT function. Adjustable cams gears are garbage vvt or not. Waste of money for the negligible gains.

[Roman]

Yeah and it's really a negligable reduction in mass, given that they rotate at half of crank speed.

Way more difference made in that regard by a light flywheel.

[jclau45]

The itbs on the car were just for show purpose, because i have never had the vvti working on the car, I cannot tell you if it really gave me more power. but it definitely sound nice. I have a lot of new things that are going to be made too the car. So far i have the new turbo gt40, with 750cc injectors. emerald k3 ecu, and 70mm ford throttle body. my plans are to install a hks triple plate clutch, and try to get the vvti working with the oem ecu. I will be using the emerald to control fuel and ignition and the oem for the vvti. That is why i need a oem crank trigger because i modify the one i had to run the emerald. I have stock internals fornow because with the weight of this car and just going 10 pounds of boost i think that is all i will need for know until i replace the rear end. I will try to use the oem ecu with the 36-1 trigger that is in the car now and hiopefully the oem computer will run the vvti with the rest of the sensor. Maybe i can fool the ecu.

[MANDALAY]

^ be careful . i was going to run stock with my SC set up but slowly convinced not to.
If you look at the Rods they are quite thin.

[jclau45]

Ok I will keep this in mind.

[Roman]

Pretty sure I heard/read that the rods are the same as the 3SGTE in the Caldina...

Anyone care to check on the EPC?

In that case, the high compression pistons would surely be the weakest link.