TSE Class Rules

[Orlando_87GN]

Turbo Street Eliminator – TSE

General

• Qualifying ET is 11.20 or quicker.
• Heads-up pro tree start and pro ladder.
• Winner and runner-up are subject to re-weigh and re-tech immediately after final round or at any other time.
• Any entrant caught trying to deliberately break the rules will be disqualified from the TSE class.

Definition of "Factory Stock Appearing"
A factory stock appearing part is a GM part originally delivered on a 1981 to 1987 Buick Regal, GNX, Grand National, T-Type or Turbo Regal from Buick Motor Division and is externally stock in appearance. No external welding, cold weld epoxy, puttying, etc. may be done on any factory stock appearing part unless specifically stated. See Engine section for cylinder block requirements.

Chassis

• Seat belts and lights must be operational.
• Helmet and fire jacket required. Car must pass track safety inspection.
• Car should possess all applicable safety equipment for potential ET/speeds attained.
• Minimum car weight w/driver must be at least 3,400 pounds equipped with 3.8 block. Cars equipped with a 4.1 Stage 1 or 2 or aluminum block must weigh at least 3,600 pounds w/driver.
• Complete stock, painted Turbo Regal/Grand National body required.
• Stock wheelbase required (108.0" measured).
• Engine/firewall must be in stock location.
• Stock operating glass windows and windshield required, no lexan.
• Factory stock suspension locations required w/any type stock location shocks.
• Any suspension stabilizer/reinforcement bars or traction enhancing devices are allowed.
• Swaybars may be removed.
• No ladder bars or coil over equipped rear suspensions.
• Outer frame rails notching allowed. Inner frame rails remain in the stock location.
• Reinforcement at inner rear frame rail allowed.
• No quarter panel modifications except rolled inner lip.
• Minor modifications to stock rear wheel wells (no mini-tubs).
• Factory stock appearing inner front wheel wells required. Trimming allowed for downpipe clearance.
• No wheelie bars or parachutes.
• Brake system line locks allowed.
• Brake system can be either Power Master, vacuum boost operated or manual.
• Drive shaft safety loop required.
• Sponsor/vendor decals acceptable.

Engine

• Stock, Stage 1 or 2 Buick V6 off-center or on-center cylinder blocks are allowed.
• 4.1 Stage 1 or 2 blocks allowed with a 200-pound weight addition.
• Iron, Stage 1, aluminum M&A or Champion cylinder head castings allowed.
• No Stage 2 iron or aluminum heads allowed.
• Any valve covers and oil pan allowed.
• No dry sump-oiling systems.
• Stock, cast intake manifold required. No external welding allowed except for EGR block-off plate and/or repairs.
• No visible modifications such as welding, cold weld epoxy, puttying, etc. may be done on any portion of the intake manifold runners to increase manifold air flow are allowed.
• No aftermarket Turbo V6 or GM V6 4-barrel intake manifolds of any kind allowed.
• Factory stock plenum w/spacer or aftermarket cast aluminum intake plenum allowed.
• Any size single modified stock or aftermarket throttle body allowed. Single throttle plate only.
• Stock or stock-type exhaust headers are allowed. Welded in EGT gauge probe bungs are allowed.
• Any single or dual exhaust system allowed. Must muffle and exit in stock location(s) (3.0" max size).
• Downpipe size max is 3-1/2". It must be routed down through the stock location. No flex pipe allowed.

Turbo

• One (1) 3-bolt turbo allowed. Note: The largest allowable turbo compressor wheel is up to and including 76mm. Maximum opening size anywhere on the compressor housing inducer must be less than 77.50mm.
• Allowable turbo compressor housings are a Precision Turbo & Engine P/N PTE4x3, a Garrett P/N 446560-0001 or a Turbonetics P/N 20466. Note: One of the following turbine exhaust housings is allowed. A Garrett P/N's 430832-4 and 430832-5, PT&E P/N's THB376, THB380, THB576 and THB580, Turbonetics P/N's 20240-63 and 30340-82 3 bolt turbine housings that were available November 1 of the previous year. *** The factory stock appearing turbine exhaust to downpipe flange connection must be used.
• The PTE TE88-TSE 3-bolt turbo exhaust housing is not allowed in the TSE class.
• Any wastegate configuration acceptable.

Intercooler

• Any stock location or front mount air to air intercooler is allowed. A front mount intercooler except for the piping may not extend down below the bottom of the stock located bumper support.
• No liquid intercoolers, intercooler external spray cooling or add-on cold boxes allowed.

Engine Management & Fuel System

• Stock or modified stock ECM, aftermarket fuel management system are allowed (DFI, Fel-Pro, Motec, etc.).
• MAF optional.
• Any air induction system allowed.
• Any fuel pump(s) configuration/location allowed.
• Voltage increasing and fuel pump hot wiring devices are allowed.
• Any fuel lines allowed.
• Any type fuel pressure regulator allowed. Any fuel injectors allowed 7 maximum. The 7th injector MUST get its fuel supply from the fuel rail.
  Factory stock fuel tank w/sump addition or a fuel cell is allowed.
  Gasoline fuel only, no additives, alcohol, or nitrous oxide injection allowed.

Engine Compartment

• A/C and heating equipment may be removed.
• Power steering operational w/belt in stock location.
• Stock alternator operational w/belt in stock location. Relocation brackets allowed as long as alternator is still on driver's side, front of engine.
• Stock water pump operational w/belt in stock location.
• All engine accessories must be driven from the same belt.
• Any engine compartment dress-up allowed.
• Battery may be in any location.
• Any stock type/location electric engine cooling fan(s) allowed.
• Any stock or replacement radiator in stock location allowed.

Transmission

• Any GM automatic transmission allowed. (200-4R, TH400, etc.)
• Any torque converter allowed.
• Any transmission oil cooler and pan allowed.
• Transmission brake allowed.

Differential

• Any stock width differential housing allowed, +/- 1" allowance.
• Limited-slip differentials or spool allowed.
• Any gear ratio w/factory stock or reinforced differential cover allowed.

Tires & Wheels

• Any matched set of four (4), 15” diameter chrome steel or aluminum wheels allowed.
• Rear drag slicks w/sidewall designation up to and including 29.5” x 10.5” – 15”. No "W" tires allowed. Rear DOT street tires w/sidewall designation up to and including a 29.5” x 12.5” – 15” size tires are allowed. Rear tire footprint when installed on a rim and mounted on the car can not exceed a maximum of 10.6" in width at 10 psig checking pressure. Tires may not be shaved at the tread edge to meet the 10.6" maximum tread width rule.
• Front tire footprint must be at least 3.5" wide.

Interior

• Full stock appearing interior required.
• Race seats are allowed only if seats are attached to the rear crossbar of the roll cage and seats are painted and upholstered to match the factory interior.
• Any transmission shifter allowed.
• Any additional aftermarket gauges allowed.
• A maximum of 2 hood mounted gauges are allowed.