Paul,
Go here;
http://jalopnik.com/5979630/why-buy-a-regular-corvette-when-you-can-buy-a-tube+frame-gt1
a Turbo PP 3 Rotor or TC PP 3 Rotor in this thing for Lemans? How much less than a Small Block in weight?
my best,
Anthony
About 100 pounds. But that does not matter in the Rolex as the
rules are adjusted for each car.
That is not what I had in mind. The Prototype class in the Rolex
using rear engine moncoque chassis powered by Chevy,Ford and BMW V8's.
Team Sahlen would be an obvious choice.
They won the last Rolex GT with an RX8.
http://www.sahlen.com/brands/team-sahlen-racing.cfm
http://www.teamsahlen.com/
Paul Lamar
---------------------------
Here are the rules.
DAYTONA PROTOTYPES ENGINE ELIGIBILITY AND APPROVAL LIST as of January 15,
2013 The following engines have been approved for competition in Daytona
Prototypes.
BMW S62-B50 32 valve 5.0L V-8 Bore: 3.701 Stroke: 3.502 Minimum crank
weight: 40 lbs Maximum compression ratio: 11:1 Cylinder heads and intake
cannot be ported. Intake valve: 1.377 Exhaust valve: 1.200 Piston,
rings, pin and connecting rod: 936gm minimum Maximum camshaft lift @
retainer with zero lash: .500 Maximum cam duration: 260° @ .050 lift
Induction: 8 individual butterflies @ 1.965 Must use OEM intake manifold
base with trumpets as submitted (Dinan # DC763-0003 8.750 length trumpet).
Air intake to be sealed to 11 x 9 9/16 hole in top of OE intake manifold.
Must use approved air box. Cam profile on file cannot be changed RPM limit:
7000 Maximum fuel pressure 5 bar (72.5 psi)
CHEVROLET 5.0L V8 Can also be branded as Cadillac. Engine block Casting #
12598723 or 12621766 with specified bore: 3.900 Stroke: 3.185 Minimum
crank weight: 38lb Maximum compression ratio: 11.5:1 Cylinder heads part #
17802752. Intake and exhaust ports cannot be modified. Cylinder head
intake runner maximum volume: 230 238cc’s Cylinder head exhaust runner
maximum volume: 87 cc’s Intake valve: 2.100 Exhaust valve: 1.550 Piston
w/rings, pin and connecting rod: 1000gm minimum. May use titanium wrist
pin. Maximum camshaft lift @ retainer with zero lash: .590. Maximum cam
duration: 248°/251° @.050 lift. Must use with no modifications. Maximum
RPM: 6900 7000 Maximum fuel pressure 5 bar (72.5 psi) Part # K-GMDPAA Intake
Manifold, w/ 2.060 inch I.R. Kinsler Throttle Bodies with offset throttle
blades as submitted. Inlet trumpets and air box as submitted and approved.
Air box base Part # 17802737 with GRAND-AM issued throttle body spacer.
Throttle body spacer must remain unaltered and as issued by GRAND-AM.
FORD 5.0L V8 Bore: 3.705 Stroke: 3.543 Minimum crank weight: 38 lbs,
Maximum compression ratio: 11:1 OEM GT40 cylinder head with production
intake ports. Maximum intake runner volume: 251cc, maximum exhaust runner
volume: 115 cc Intake valve: 1.496 Exhaust valve: 1.260 Piston, rings,
pin and connecting rod: 1000gm minimum Maximum camshaft lift @ retainer with
zero lash: .498 Maximum cam duration: 254° @ .050 lift. Cam profile on
file cannot be changed. Intake Manifold Part# RYE-70686A. Inlet trumpets
and air box as submitted and approved. RPM limit: 7300 7000 Maximum fuel
pressure 5.0 bar ( 72.5 psi).
The 3 rotor is 3.9 L .. RPM up to 10,000.
Paul Lamar
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