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Peter Lantz Motorsport fabricates chassies as well as many other parts to many European top drag racers. The Optima Batteries Top Fuel Dragster runs with PLR fabricated chassies, fuel tank, body, wing, injector, fuel system and clutch canon with its timer systems.

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The home-made clutch canon and timer system gives the team more room for exact adjustments in order to match different tracks. The Sharkfin injector developed and fabricated by Peter Lantz and crew chief Morgan Svensson gives a lot of advantage when compared to the traditional fuel systems.

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As constructed standing up, the injector gives a equal air and fuel mix in the supercharger and intake manifold. There is no need for the smaller inlet in the rear of the supercharger as on the latest design of SSI superchargers. The injector also gives a increasing supercharger boost as the rising speed gives the injector more airflow trough the scoop. The air inlet holes are placed in less turbulent air with the scoop and this helps the Sharkfin injector to flow 1900 cfm. Minimizing the space between the butterflies and the blower rotors creates a faster throttle response than traditional injectors.

 

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The advantage of the Sharkfin injector allows users to gear their supercharger down and use a lower supercharger boost in the start. Many teams run almost 40 psi supercharger boost when leaving the line just to have that much boost in the end of the run. The extra horsepower when boosting 40 psi has to be removed by more clutch slip in the start creating detonations, lots of stress and a higher risk of dropped cylinders. It also creates a lot of extra stress to the clutch itself.

When Kent Persson ran the 294 mph, 4,98 pass the supercharger boost was only 15 psi when leaving the line. The Sharkfin injector increased the boost to 35 psi during the run and no fuel lean out was necessary at the top end. The lower supercharger boost and the less risk for detonations and dropped cylinders have not only given the car great performance. The engine combination saves a lot of parts, the team have put over 130 passes with the same engine block and most of them on the same set of pistons.

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This is a printout from the first qualifying run at Santa Pod, England and the ET was 5,081 and top speed 281 mph. The onboard computer printout shows some of the advantage you gain with the Sharkfin injector. Note how the supercharger boost (blue) increases during the run and stops at 38 psi while intake manifold temperature (purple) only goes from 40 deg C (104 deg F) to 49 deg C (120 deg F). The two black graphs show engine rpm and speed.   (click the graph for bigger view)

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The new scoop is designed to better help the blower work to its own perfection's, and will work as well on blowers with big openings. We have had a lot of help from the "old" type, to create and design the new one.



Injector_00_4.JPG (23713 bytes)Injector_00_3.JPG (29135 bytes)The injector  is made to fit the big blower opening and the injector housing is taller.
This new scoop is designed to raise the pressure during the run even more then the "old" type; which adds approx. 15 psi during the run, almost twice the pressure then any injector on the market today.

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PLR MOTORSPORT
Peter Lantz, Norra Sjöbogatan. 53 506 43 Borås
phone. +46-33-201951, fax. +46-33-201951
e-mail. peter@plr.nu

COPYRIGHT(C)1999, 2000, 2001, 2002 PLR MOTORSPORTS. ALL RIGHTS RESERVED