993 C4S Ate me
#31
Rennlist Member
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Originally Posted by Kolbjorn S
The varioram has two stages: At 5,000 and at 5,800 rpm.
Together with modified valves the varioram models have 285 hp compared to 272 on the earlier (94-95) 993's.
Together with modified valves the varioram models have 285 hp compared to 272 on the earlier (94-95) 993's.
I'm not sure what you are calling a 'stage', but the benfit of a Vram engine is torque at lower rpms. Whatever 'stage' you are referencing has little impact on performance. The valve size is what drives hp at the upper end of the rpm band and the Vram drives performance at the lower end.
Here is the best description I have seen on the Vram. The author, Steve Timmins, built the engine in my race car:
http://instant-g.com/Products/36Conversion/VRAM.html
#32
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Originally Posted by jakermc
I'm not sure what you are calling a 'stage'
![](http://forums.rennlist.com/upload/varioram.jpg)