Varioram, timing belt, ect??
Thread Starter
Three Wheelin'
Joined: Jan 2003
Posts: 1,567
Likes: 0
From: Schenectady, NY
Varioram, timing belt, ect??
Hi I am new to this forum but not to Rennlist. Do 993 require timing belt changes? If so at what interval? Also what is a varioram?? - Thanks!
RL Community Team
Rennlist Member
Rennlist Member
Joined: Apr 2002
Posts: 3,979
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From: Seattle
Welcome to the 993 board!
No timing belt changes here. The cams are chain driven and have hydraulic tensioners. The VarioRam is a three-stage induction plenum. There is a modest gain in mid-range torque. Note that only the 96- cars had the Varioram, the earlier cars had the 964 two-stage resonance induction system. The DME controls the length of the intake runners depending on RPM to maximize power. Not to be confused with the "VarioCam" on the later water-pumpers...
There is a lot of info on p-car.com about 993s.... enjoy!
No timing belt changes here. The cams are chain driven and have hydraulic tensioners. The VarioRam is a three-stage induction plenum. There is a modest gain in mid-range torque. Note that only the 96- cars had the Varioram, the earlier cars had the 964 two-stage resonance induction system. The DME controls the length of the intake runners depending on RPM to maximize power. Not to be confused with the "VarioCam" on the later water-pumpers...
There is a lot of info on p-car.com about 993s.... enjoy!
Thread Starter
Three Wheelin'
Joined: Jan 2003
Posts: 1,567
Likes: 0
From: Schenectady, NY
Hello Tom and thanks for all your wonderful input!
Originally posted by TomF
Welcome to the 993 board!
No timing belt changes here. The cams are chain driven and have hydraulic tensioners. The VarioRam is a three-stage induction plenum. There is a modest gain in mid-range torque. Note that only the 96- cars had the Varioram, the earlier cars had the 964 two-stage resonance induction system. The DME controls the length of the intake runners depending on RPM to maximize power. Not to be confused with the "VarioCam" on the later water-pumpers...
There is a lot of info on p-car.com about 993s.... enjoy!
Welcome to the 993 board!
No timing belt changes here. The cams are chain driven and have hydraulic tensioners. The VarioRam is a three-stage induction plenum. There is a modest gain in mid-range torque. Note that only the 96- cars had the Varioram, the earlier cars had the 964 two-stage resonance induction system. The DME controls the length of the intake runners depending on RPM to maximize power. Not to be confused with the "VarioCam" on the later water-pumpers...
There is a lot of info on p-car.com about 993s.... enjoy!