3SGE BEAMS

[Sanxta]

Does anyone know at what revs the cam profile changes? And is it different for each gear?

[flygt4]

auto beams 3sge caldina noticably kicks at 4500rpm. i dont imagine an altezza would be too far either side of that.

[Celica RA45]

the cam is moving back and forwards because of your foot ,and the cam doesnt change up to a bigger profile either ,all it does is advance when yoyr foot is on the loud pedal and then reatrds back up in the higher rev range

[sergei]

I've driven a few altezzas and they don't have any noticeble kick.

[RomanV]

I've driven a few altezzas and they don't have any noticeble kick.

+1.

I've heard a few others say the same thing....

FlyGT4, you should come for a ride in a 'proper' beams powered car.

[RomanV]

the cam is moving back and forwards because of your foot ,and the cam doesnt change up to a bigger profile either ,all it does is advance when yoyr foot is on the loud pedal and then reatrds back up in the higher rev range

Why would the cam retard itself at higher RPMs?

[Celica RA45]

well dave when the cam profile has reached its max posi power will start dropping off so it gets retarded say 10 degress back and the power keeps going up etc
on my motor with the cam profile that i use max power is at 7500 rpm we start to retard at 7000 back 3 degress then at 7800 another 3degress and again at 8200 another 3degress so power is still made to 8750 rpm .thats 3 degress cam so 6 on the crank

[Barks]

My parents used to have the RS200 (I think) edition with the 3SGE Beams mated up to the 6 speed. I noticed it would 'find' a lot more power above 4500 RPM, so my assumption was that was when the Beams system kicked in.

Of course I've only owned cars with different variants of the 4A in them for the past 10 years, so I might be talking through a hole in my ar$e....

[flygt4]

I've driven a few altezzas and they don't have any noticeble kick.

+1.

I've heard a few others say the same thing....

FlyGT4, you should come for a ride in a 'proper' beams powered car.

hahha yep i only got teh single vvti au

i wasnt expecting it to kick either,all altezzas ive been in dont, and my understanding of the vvti is that it shouldnt. but it definately takes off at 4500rpm, noticeable enuf that u find urself trying to keep it above that, kinda hard with a auto box. i have observed it is quite a bit smoother on higher octane gas tho.

[RomanV]

FlyGT4, you should come for a ride in a 'proper' beams powered car.

hahha yep i only got teh single vvti au

I've got two engines with VVTI, does that mean I've got dual VVTI then?

Anyway point being, I've only got single VVTI as well.... But trust me, there's a world of difference.

[flygt4]

oh yeh thats right the mr2 is only single too thats cheating.

[Distrb]

VVT-i is infinitely variable, so doesnt ever 'kick in' at a set rpm

[sergei]

even VVT in 20v and such does not kick in at set RPMs, it comes on depending on throttle but comes off at set rpm (6800-7200) wich is very near it is max power.

[Sanxta]

So is my engine dual VVTi? What is all this speak of single? I read somewhere that it works the inlet and exhaust valves, just like VTEC . . .

[flygt4]

altezza 3sge is dual vvti, on both inlet and exhaust. its pretty much the most specced up n/a 3s they made. i think its 205 or 210 toyota horses.

they put single vvti 3sge's in the caldinas and mr2's. they were like 190 sumthing toyota horses.

[XERO]

I've driven a few altezzas and they don't have any noticeble kick.

+1.

I've heard a few others say the same thing....

FlyGT4, you should come for a ride in a 'proper' beams powered car.

+ 2, Ive had the caldina GT, had a noticeable diffrence around 4000-4500 rpm, I now have an altezza RS200 Z, and its too smooth to notice... Except if you can keep it in around 3rd, it will get up to around 50kph, and then you will feel the power come on even more...

Oh and yes to going for a ride In roman's car... He's a nutter... but the car is wicked, and has the best noise...

[Adamal]

VVT-i is infinitely variable, so doesnt ever 'kick in' at a set rpm

Thats pretty much it! It doesn't have a single change point for the [borat]RRETARDATION![/borat] because its changing throughout the whole rev range

[RomanV]

No real kick in the torque curve, according to factory dyno plots anyway.

A little rise where the engine components start to come into their efficiency range, but I'd say it's mostly imagined by people that think that VVTI has a 'kick' like VTEC.

And for those of you that are skeptical of toyota dyno plots, here's a real life one: (Although the car still wasnt running properly, but meh, you get the idea)