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Date Posted: 07:53:57 11/17/04 Wed
Author: John Kolivas
Subject: Get your Facts Straight!!
In reply to: Jake 's message, "Turbo Rules (READ)" on 11:22:39 11/15/04 Mon

Did you race in the NMRA this year? I guarantee you did not. I did and I run an 82mm setup. NO 82mm TURBO CAR ran anywhere close to 170 this year...PERIOD. The fastest mph was 164-165 for the turbo cars, this was done by Dave Hopper and Peter Champani. The average mph for the turbo cars were 158-162 which is nowhere close to 170 as you stated. The only cars that ran 170 were 2 of the blower cars and they only did it twice. The 1/8 mile times for the 82mm turbo cars were in the 5.60 range. Get your facts straight.
>Below is the NMRA Drag Radial Class Weight breaks and
>turbo rules. The limit turbo’s to no bigger than 82mm
>and only 360 cubic-inches. This call only allows
>Conventional non canted valve heads. A Car has already
>been 170 MPH on Drag Radials in this class with the 82
>MM turbo.
>
>
>1.23 TURBOCHARGERS
>Only one turbocharger permitted.
>SINGLE TURBOCHARGER: Accepted single turbochargers are
>permitted with the following requirements:
>Turbocharger must be of conventional impeller and
>housing design and type. Turbocharger is limited to a
>choice of two turbochargers (at two weight breaks):
>[a] maximum size of 80.0 mm/3.150" - inducer wheel
>diameter at the point where the leading edge of the
>compressor wheel meets the inlet housing. Inlet
>housing is permitted a maximum inlet diameter of
>3.230" where the leading edge of the compressor wheel
>meets the housing. [b] maximum size of 82.0 mm/3.228"
>- inducer wheel diameter at the point where the
>leading edge of the compressor wheel meets the inlet
>housing. Inlet housing is permitted a maximum inlet
>diameter of 3.308"where the leading edge of the
>compressor wheel meets the housing. Compressor wheel
>to housing clearance must maintain a maximum of 0.080"
>clearance beginning from a) where the leading edge of
>the compressor wheel meets the inlet of the compressor
>housing to b) the transition point where the trailing
>edge of the compressor wheel meets the volute. All air
>entering the turbocharger must pass through the
>turbocharger inlet. Injection of any liquid, gas, or
>any other substance into the inlet or exhaust housing
>prohibited. Turbocharger compressor wheel must be
>constructed of cast or billet aluminum. Exotic
>material wheels prohibited. Impeller wheel may not be
>stepped, cut down, or notched to meet impeller
>tip-to-tip dimension.
>
>1.24 AFTERCOOLER/INTERCOOLER
>AFTERCOOLER/INTERCOOLER: One and only one
>aftercooler/intercooler permitted only on forced
>induction entries. Air-to-air or air-to-water/ice are
>the only systems permitted. Water and/or ice are the
>only components permitted in the reservoir.
>
>13: WEIGHT BREAKS/ENGINE COMBINATIONS
>
>DRAG RADIAL
>Base weight:
>POWER ADDER BASE CI WEIGHT
> Turbocharged – 82mm 360 3300
>Supercharged (ALL MODELS except X Trim) 360 3100
>Supercharged (X-TRIM) 360 3300
>Nitrous Oxide 360 2950
>Nitrous Oxide 415 3150
>
>Forced Induction entries without intercooler may
>deduct 200 lbs from vehicle weight.
>
>1.17a) HEADS, PERMITTED: Original manufacture,
>generally available heads, accepted by NMRA,
>permitted. External modifications prohibited in port
>area. Spark plug placement and depth must remain
>stock. Billet or fabricated heads prohibited. One-off
>or custom made cylinder heads prohibited. Internal
>port areas of cylinder heads may be welded or epoxied,
>but heads must maintain standard "as produced" valve
>layout design, valve cant, etc. (no fabricating a
>canted valve design from an inline head, etc.)

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