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Joined: Sep 2004
Posts: 321
Member 2002 Toyota Celica GT
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Member
2002 Toyota Celica GT
Joined: Sep 2004
Posts: 321 |
can anybody help me out here. i was talkin to one of my friends yesterday and of course we were talkin cars. and i was tryin to explain the differences in a GT and a GTS, but couldn't find a good way to explain lift. any help here guys?
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Joined: Dec 2004
Posts: 466
Senior Member 2004 Toyota Celica
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Senior Member
2004 Toyota Celica
Joined: Dec 2004
Posts: 466 |
The VVT-i portion of the system continuously varies intake valve timing throughout the rev range by hydraulically rotating the camshaft relative to its drive gear. Note that VVT (without the "i") did not do this continuously. The VVL portion of the system is similar to Honda's VTEC system, incorporating two distinct cam profiles. However, the actual mechanism is quite different. Both cam lobes operate a single wide rocker arm that acts on both intake or both exhaust valves. A needle-bearing roller on the arm follows the low-rpm, short-duration, low-lift lobe, forcing both valves to open and close on that profile. The roller design and roller bearings on the rocker arm pivot help to minimize valvetrain friction. The high-rpm, higher-duration, longer-lift lobe rubs on a hardened steel slipper follower mounted to the rocker arm with a spring. Even though the high-rpm lobe is pushing down further than the low-rpm lobe, the spring absorbs the extra movement. At 6000rpm, the ECU sends a signal to an oil control valve at the end of the camshaft that puts oil pressure behind a lock pin in the rocker arm, sliding the pin under the spring-loaded slipper follower, locking it to the rocker arm and forcing the arm to follow the high-rpm cam profile.
That's the technical description, but in plain english, the cam profile switch results in more air going in and a jump of 30HP.
![1953434067-VVTLi.jpg
Views: 690
Size: 26.13 KB 1953434067-VVTLi.jpg](https://celicahobby.com/forums/ubbthreads.php/ubb/download/Number/23605/filename/1953434067-VVTLi.jpg)
Last edited by GTS_Rosh; Jan 17, 2005 11:41am.
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Joined: Jul 2004
Posts: 774
Cold Warrior 2004 Toyota Celica GTS
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Cold Warrior
2004 Toyota Celica GTS
Joined: Jul 2004
Posts: 774 |
^ That's the mechanical description. In simpler terms, when lift kicks in, a more aggresive cam comes into play, resulting in the increased horsepower.
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Joined: May 2004
Posts: 618
Senior Member 2001 Toyota Celica
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Senior Member
2001 Toyota Celica
Joined: May 2004
Posts: 618 |
According to what you feel...Lift is a shitty turbo.
Last edited by jyboygenius; Jan 17, 2005 12:30pm.
Enzo Ferrari " You may be a Ferrari owner; but, you may not necessarly be a Ferrari Driver."
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Joined: Aug 2004
Posts: 479
Senior Member 2002 Toyota Celica
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Senior Member
2002 Toyota Celica
Joined: Aug 2004
Posts: 479 |
Lift is like a blowjob from a fat chick
Life is the sexually transmitted interruption of an otherwise peaceful existence...
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Joined: Jan 2004
Posts: 1,612
2low2slow 2002 Toyota Celica GT
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2low2slow
2002 Toyota Celica GT
Joined: Jan 2004
Posts: 1,612 |
^^ ![rofl rofl](https://celicahobby.com/forums/images/graemlins/celica/rotf.gif) i have no idea what that meas but oh well, what some people who dont know much about cars think by second cam kick in they think another camshaft, its all on one ![thumbsup thumbsup](https://celicahobby.com/forums/images/graemlins/celica/thumbsup.gif) still dohc tho
![[Linked Image]](https://celicahobby.com/forums/attach/1869898045-untouch.jpg) A boats a boat, but the mystery box could be anything....Even a boat!
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Joined: Jun 2004
Posts: 1,337
Specialist 2002 Toyota Celica
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Specialist
2002 Toyota Celica
Joined: Jun 2004
Posts: 1,337 |
dont worry about explaining it, just take them for a ride and it will explain itself
respect the gt-s
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Joined: Sep 2004
Posts: 321
Member 2002 Toyota Celica GT
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Member
2002 Toyota Celica GT
Joined: Sep 2004
Posts: 321 |
dont worry about explaining it, just take them for a ride and it will explain itself i would... but i have a GT
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Joined: Nov 2004
Posts: 304
Member 2002 Volkswagon Jetta GLS
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Member
2002 Volkswagon Jetta GLS
Joined: Nov 2004
Posts: 304 |
lol then.. get a shitty turbo and then take them for a ride
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Joined: Dec 2004
Posts: 466
Senior Member 2004 Toyota Celica
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Senior Member
2004 Toyota Celica
Joined: Dec 2004
Posts: 466 |
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Joined: Jul 2004
Posts: 774
Cold Warrior 2004 Toyota Celica GTS
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Cold Warrior
2004 Toyota Celica GTS
Joined: Jul 2004
Posts: 774 |
Nothing says you can't add a turbo onto an engine with lift, if you've GOT to have turbo.
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Joined: Jan 2004
Posts: 1,612
2low2slow 2002 Toyota Celica GT
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2low2slow
2002 Toyota Celica GT
Joined: Jan 2004
Posts: 1,612 |
true, except the compression is already prety high
![[Linked Image]](https://celicahobby.com/forums/attach/1869898045-untouch.jpg) A boats a boat, but the mystery box could be anything....Even a boat!
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Joined: Jan 2005
Posts: 89
Member 2001 Toyota Celica
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Member
2001 Toyota Celica
Joined: Jan 2005
Posts: 89 |
^thats why you should get lower it. Lower the compression, then you can have higher boost from the turbo.
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Posts: 1,298
Specialist 2000 Toyota Celica
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Specialist
2000 Toyota Celica
Joined: Jun 2004
Posts: 1,298 |
ok...heres a GT:
vvvvvvrrrrrooooommmmmmm...
now heres a GTS:
vvvvvvvvvrrrrrrrrrrooooOOOOOOOOOOOOMMMMMMMMMMMMMMMMMMMMMM...
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Joined: Nov 2003
Posts: 1,363
Who's yo Daddy? 2000 Toyota Celica GT
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Who's yo Daddy?
2000 Toyota Celica GT
Joined: Nov 2003
Posts: 1,363 |
be a newb and say its like honduhs vtech and he will be like oHHHH.
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Joined: May 2004
Posts: 2,971
Boobie Vision 2000 Toyota Celica
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Boobie Vision
2000 Toyota Celica
Joined: May 2004
Posts: 2,971 |
ok...heres a GT:
vvvvvvrrrrrooooommmmmmm...
now heres a GTS:
vvvvvvvvvrrrrrrrrrrooooOOOOOOOOOOOOMMMMMMMMMMMMMMMMMMMMMM... hehehe that sounds about right ![rofl rofl](https://celicahobby.com/forums/images/graemlins/celica/rotf.gif)
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Joined: August 2003
Thank you.: Thanks to Jeff, Stephen, & Matt for all their help. And a special thanks to my gf, Kristen--you mean the world to me! Random: calvin & hobbes owns!
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