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Metal Guru
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Varioram on a 3.0
A few years ago someone was putting a Varioram intake on a 3.0 motor. Does anyone know of anyone on the board who has done this?
Search function was no help  Thanks.
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Paul B. '91 964 3.3 Turbo Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, H&R Coilovers, ESB spring plates- 210 lb |
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11-19-2007, 03:49 PM
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Join Date: Mar 2004
Location: US
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Randy Wells had or has a 2.8 w/ VarioRam in one of his '72s:
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11-19-2007, 04:14 PM
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Location: Kansas City
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Just how does that work exactly? My understanding was that the Varioram from the 993 motors was all about variable cam timing, i.e. a function of the cam and valves. How does this intake "work", and what does it do for a 2.8? Very interesting....
JA
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John - '70/73 RS Spec Coupe (Sold) - '04 GT3 |
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11-19-2007, 06:14 PM
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It just varies the intake runner lengths/plenum volume. Probably not worth the added complication and weight.
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11-19-2007, 06:36 PM
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Location: Langley,B.C.
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Jandrews, you are thinking of VarioCam.
I am sure Steve at Rennsport could shine some light on this as well. Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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11-19-2007, 06:41 PM
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Quote:
Varioram intakes produce a very flat torque curve thats better than most ITB systems from idle to 6K. Randy's Varioram motor has many custom internals that allow that 2.8 to make power to 8K. Not cheap to be sure but like many things, you get what you pay for,... 
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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11-19-2007, 07:17 PM
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I've followed Randy's car at Pacific Raceways, it is very fast. His 2.8 with the varioram makes fantastic torque and HP and it revs forever. The first time I saw it I mistook it for 3.6 conversion.
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11-19-2007, 08:41 PM
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Hm, I wounder if putting in a straight 993 engine wouldn't be cheaper compared to all that custom work required to get a varioram intake adapted to an earlier engine. Why would you want to do it unless your racing classification requires small displacement and doesn't penalize you for intake modifications?
Cheers, Ingo
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1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
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11-19-2007, 09:36 PM
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Ingo:
Racing classifications are the very reasons why Randy did the 2.8. That displacement was the class limit and they were looking for "maximum area under the curve". Mission Accomplished, IMHO.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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11-19-2007, 10:28 PM
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Steve, that's what I thought - makes perfect sense
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1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
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11-20-2007, 01:11 AM
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Sports Purpose 911 Driver
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I bet that engine sounds awesome!
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James Shira R Gruppe # 271 1972 911 Coupe 3.8 RS ‘nbr two’ 1972 911 Coupe 3.2 TwinPlug MFI 'Tangerina-Jolie' 1955 356 Pre A Coupe ‘old red’ 1956 356A Emory speedster build in progress |
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11-20-2007, 05:10 AM
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1991 Porsche 964 Turbo
1974 Porsche 911 Targa 3.6
