Show me 964's with Varioram conversion PLS !
#32
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Install almost complete, preliminary dyno tests clearly show the 2500-5000rpm advantages of the Varioram conversion with Motec. More details when we are done.....
#34
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Location: Peachtree City, Ga
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9M -
Impressive numbers, your path follows mine pretty close but you have obtain more torque and HP.
Is that a stock 964 engine that you added the Vram to plus the MOTEC tune?
What is the red line rep of??? without the Vram???
Lots of questions on the set up, timing and fuel VE - but don't want to get personal.
Will be interested in what your final numbers are .
Impressive numbers, your path follows mine pretty close but you have obtain more torque and HP.
Is that a stock 964 engine that you added the Vram to plus the MOTEC tune?
What is the red line rep of??? without the Vram???
Lots of questions on the set up, timing and fuel VE - but don't want to get personal.
Will be interested in what your final numbers are .
#36
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Location: Peachtree City, Ga
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I'm not sure if that is correct. If I look at my dyno charts the red line on 9m's chart is more reflective of my dyno pulls be for I installed the VRAM.
The VRAM gives you that significant torque increase that starts in the 3000 RPM range.
With out the VRAM you don't have that radical climb in torque.
9M, your charts so call the shot.
The VRAM gives you that significant torque increase that starts in the 3000 RPM range.
With out the VRAM you don't have that radical climb in torque.
9M, your charts so call the shot.
#38
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9M -
Impressive numbers, your path follows mine pretty close but you have obtain more torque and HP.
Is that a stock 964 engine that you added the Vram to plus the MOTEC tune?
What is the red line rep of??? without the Vram???
Lots of questions on the set up, timing and fuel VE - but don't want to get personal.
Will be interested in what your final numbers are .
Impressive numbers, your path follows mine pretty close but you have obtain more torque and HP.
Is that a stock 964 engine that you added the Vram to plus the MOTEC tune?
What is the red line rep of??? without the Vram???
Lots of questions on the set up, timing and fuel VE - but don't want to get personal.
Will be interested in what your final numbers are .
#39
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The car was initially scheduled for the Motec conversion only, then following discussion with the owner he found a Varioram manifold for sale and the rest, as they say, is history. We simply re-manufactured the 9m Motec wiring harness to include the Varioram and Resonance flap functions, hence no switch required. My opinion is that fitting VR to a 964 with a stock ecu is a pointless exercise since the ecu and injectors will not fully support the increased airflow of the VR manifold.
#40
Burning Brakes
Previous 9M results without VRam using Motec seem to produce much higher torque and power? Am I reading this correctly?
https://rennlist.com/forums/964-foru...version-2.html
https://rennlist.com/forums/964-foru...version-2.html
#41
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Previous 9M results without VRam using Motec seem to produce much higher torque and power? Am I reading this correctly?
https://rennlist.com/forums/964-foru...version-2.html
https://rennlist.com/forums/964-foru...version-2.html
#43
Burning Brakes
It seems the earlier non VRam conversion on Motec still produced quite a lot more torque / power. Is that because the VRAM is not optimised to the 964 heads or does this recent engine need a refresh?
#44
Three Wheelin'
does the VRM engine give best torque at all RPM, as it decreases/ increases the length of the trumpets automaticly inside the plenum.
is this set up heavier, (at the back)....
are 993 heads better than the 964s, port and valve size, this is why the 993 engine give more power to start with, regardless of the VRM, injectors size, ECU or mapping ?
are the late 993 engine cams different ?
is this set up heavier, (at the back)....
are 993 heads better than the 964s, port and valve size, this is why the 993 engine give more power to start with, regardless of the VRM, injectors size, ECU or mapping ?
are the late 993 engine cams different ?
#45
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Heavier, yes slightly, less so compared to the alloy 964 manifold of course.
The 993 and 964 cam have very similar lift curves and performance, the main difference between the two are the longer opening ramps of the hydraulic 993 camshaft.