Description:

1986 Ralt rt4 professionally converted with support from Bell Motorsports, Ketchum Fabrication, Gallup Engineering And CLR rotary. Rear frame and suspension pickup points significantly strengthened to eliminate flex. Rear rocker pickup plate changed from 1/4" aluminum to 3/8" titanium. MS, NAS, and AN hardware throughout. Marc Bahner tub rebuild #4-005-88. Fresh rebuild on strong CLR 12a streetport. Ianntti ceramic apex seals, hardend stationary gears, rotor housing water passages modified for improved cooling. Rotors have been balanced, scalloped and clearanced. Weaver external dry sump oil pump. Rare lightweight high torque starter. Intake, exhaust and porting designed and tested on dyno for strong mid-range torque so it would be powerful without having to rev too high for longer life. Custom muffler, has always met sound regulations. Fresh rebuilt calipers, new master cylinders, current Impact harness. Most parts to convert back to Cosworth. Do not know fuel cell number but rebuilt in 2005 with new foam and added internal surge tank. Dual homoligation FA/FS. Rotary likes low octane fuel so pump gas works fine. Lots of spares. Race ready. Fast,reliable and fun to drive. Possible Sports 2000 trade.


History

1986 FA SCCA national champion (Chris Clark). Ran pro atlantic (Mike Buckman) and west (Mark Landon) and east coast club races until 1995. Conversion completed 2000.Since: 20 races 11 wins. Podium FS 2005 ARRC (Dennis Dobkin)

Competition History

1986 FA runoffs winner. 2005 FS podium ARRC
Performance Data

• FA, FS
  
• 1275 lbs
  
• Old Moroso
  

Engine

• CLR Rotary
  
• Mazda
  
• 12A
  
• 260
  
• 152 ft lbs @9000 rpm
  
• Dual Weber 50DCO's. 36mm chokes. Custom intake. Ram air plenum box for trumpets
  
• Tilton
  
• AP
  
• Aluminum
  
• Custom, dyno tuned. High temp jet hot coating
  
• Break In only
  
• 0 since rebuild
  
• 
  

Fuel System

• 
  
• rebuilt 2005
  
• 20 gallons
  
• dual electric Mallorys
  
• 93 octane pump gas
  

Oil/Water System

• Custom aluminum/wiggins
  
• right side pod
  
• factory
  
• 44 row scavange side / 25 row pressure side
  
• left side pod
  

Electrical System

• MSD
  
• factory
  
• small sealed and strong mc type
  

Transmission

• Hewland
  
• FT-200
  
• 5 speed
  
• 7 row cooler with elctric pump
  
• Lots of spare gears and some new dog rings
  

Rear End

• Hewland
  
• 7 row cooler with electric pump
  
• 9:31
  
• magnesium
  
• cam and pawl
  
• lightend cv's
  
• 20 races
  
• ring and pinion and cv's neo sealed (aerospace metal impregnation process).
  

Body

• fiberglass
  
• House of colors neon green
  
• laquer
  
• good
  
• side pods modified for rotary exhaust and coolers but tunnels not affected
  

Chassis

• monocoque
  
• Ralt/Arch Motors
  
• aluminum
  
• shiny
  
• very good
  
• pushrod, nickel, very good
  
• rocker, nickel, very good
  
• Penske 8100 double adjustable
  
• 4 wheel disc
  
• rack and pinion
  
• Gotti
  
• Hoosiers
  

Interior

• 5 lb halon
  
• 6 point Impact. New 8/2010
  
• anolog
  
• Momo, removable
  
• good
  

Spares

• 5 Gotti rear and 5 Gotti front wheels
  
• Lots of gears and some new dogs
  
• Most pieces to return to Cosworth
  
• A arms, rockers, uprights, hubs and more