WINTER SPORTS

Kompressor: Anything You Ought To Know

There comes a point inside your power buildup where you may perhaps think about adding nitrous oxide injection to your supercharged car. This point normally coincides with reaching a degree of performance that suggests increased investment and diminishing returns from your supercharger. For example, my automobile comes from the factory having a 5th generation Eaton MP45 supercharger. This supercharger is limited to about 230hp worth of flow rating and so regardless of what I do with bolt-on upgrades on my engine, my peak horsepower won’t exceed 230hp limit since that is the point at which the supercharger becomes the bottle neck in my system.

As we’ve talked about in prior articles there’s still the choice of porting the factory supercharger for a 10 to 15% achieve in capacity (which in this case would be yet another 23 to 35 horsepower). There is also the alternative of retrofitting a bigger supercharger such because the Eaton M62 to achieve potential up to over 300hp depending on the final selection of a supercharger.

A achievable viable solution for this situation is to use nitrous oxide injection to supplement the power delivery when racing, and becoming satisfied having a dependable lower powered auto when the nitrous is off and we’re not racing.

The cause why nitrous oxide (N2O) becomes an excellent energy adder is twofold:

1- Nitrous is low cost as far as horsepower per dollar goes, and particularly inside the conditions where we’re already supercharged and so will only be utilizing it on the rare occasions when we do hit the track.

2- Nitrous oxide is an incredible ‘chiller’ as it comes out of the bottle at a temperature of negative 127*F and is capable of cooling the overall supercharged air charge mixture by over 100*F as reported by enthusiasts, this is an extra temperature reduction over the effects of whatever intercooler you could have fitted. The nitrous oxide injection can successfully enhance the thermal efficiency of the supercharger when it truly is most stressed out and give us a nice, cool, and dense mixture.

3- Nitrous oxide fuel delivery is relatively straight forward to setup and to tune, specially on newer model cars with return-les fuel systems, or complicated to crack computers that make it complicated to upgrade (and appropriately tune) a much larger supercharger setup. Nitrous oxide fuel delivery is usually set-up totally independently from the OEM ECU and fuel system and thus makes nitrous a feasible application for German vehicles with stubborn computers.

4- This is a racer technique… most cars appear to carry out much better during the winter months since the air is cooler, horsepower is elevated, as well as the tracks even though cold, may be prepared for traction and will heat up sufficient in the course of the evening to permit for traction and to give persons the potential to exploit the cold dense air to post their very best times of the year. As the weather gets warmer, traction increases mainly because the asphalt is warm and sticky, but horsepower is decreased because of warmer, less dense air. Typically racers obtain that their vehicles vary in their quarter mile performance by as a lot as a half a second between their summer time tune and their winter tune, specifically if you’re making use of a supercharger or turbocharger that compresses (and additional heats) the incoming air.

The remedy to on-track consistency, racers have found, would be to combine the use of nitrous oxide (which is summer time friendly) with forced induction (superchargers and turbochargers) that are winter friendly. This allows for a generous nitrous flow rate beneath the sustained pressure (even with out a bottle heater) which offers terrific summer time efficiency for nitrous assisted cars.

When you combine these two energy adders you get pretty flat and constant horsepower production year round simply because the supercharger shines when the nitrous is weak, and also the nitrous shines when the supercharger is weak, and thus together, they give constant power deliver year round.

This indicates that extra timing retard, excellent octane fuel, and possibly colder spark plugs are going to be required to run spray on a supercharged car. This suggests that the ‘out of the box’ jetting of a nitrous kit may well not be adequate on a supercharged vehicle and you’d have to make certain to monitor and possibly increase the fuel jetting to match the final horsepower figure of one’s car). Last but not least, if you are running a 500hp supercharged vehicle with an extra 120hp of nitrous oxide injection, then you ought to make certain that your fuel delivery (fuel pump and fuel lines) are in a position to flow the total amount of fuel necessary to deliver 620hp.

R170 platform of SLK compressor first came in 1997 for the model year 1998 and competed with BMW Z3. It was a class apart with its folding hardtop. It’s added weight though marred its performance of 193 hp 2.3 L charged I4 engine and automatic transmission. The SLK featured in Car and Drivers Ten finest checklist for a long time in 1997. All of the SLK’s were not build in Bremen, Germany, the SLK 320 were develop in South Africa and Mexico.Mercedes Benz SLK 230 came in 1998 having a convertible hardtop. It was the initial modern day car which combined the structural alterations to encompass the climate resistance positive aspects which comes with a hardtop as well as a wow factor of great searching two seats convertible.

Applications scenarios:

Initially these SLK230s were powered with the supercharged 2.3 liter, 4 cylinder engine which gave 185 horsepower output. It was capable of beneficial performance, the engine sounded harsh and rough, if we compared it with the engines available within the SLKs key competitors like Porsche Boxster. Though the German name would make a rough engine like Kompressor worth it even with the looks that are genuinely cool. Mercedes expanded the SLK line as much as add the SLK320 which was driven by 3.2 liter V6 engine which had been taken straight from the C class. The sports character was fully justified in 2002, when the SLK32 AMG joined the fray, with its V6 engine and output of 349 horsepower. The six cylinder engine was extra smooth and potent and it was also not too harsh on fuel economy. Depending upon the model, fuel consumption for SLK320 is rated at between 12.0 nod 13.0 L/100 Kms within the city and in between 8 L/100 kms on highway.

1- You have a car like mine, a 2005 C230 kompressor that comes having a 230hp limited Eaton MP45. With this type of setup all forms of dry nitrous injection are out of the question since we can neither compensate for fuel by way of flashing the factory ECU, nor can we elevate fuel pressure in the course of the nitrous injection since the fuel pressure regulator is in-accessible….

Recommended kit:

A wet nitrous injection kit that injects both fuel and nitrous oxide from the injection nozzle.

Injection location:

After the supercharger, right after the intercooler, and into the intake manifold of the car.

Maximum recommended injection:

25% of the original total power figure which corresponds to about a 50 hp shot of nitrous on our example.

Expected final horsepower:

60 to 65 wheel horsepower and possible about 130 ft-lbs of additional torque!

2- You have a automobile that has an accessible fuel pressure regulator, or an ECU that is often re-flashed for nitrous oxide or a ‘dual tune’ setup.

First: Dry kits are safer on supercharged cars (as lengthy as the fuel delivery via the injectors or raised fuel pressure is adequate) for the reason that they hold a lowered chance of intake backfires simply because the intake manifold is dry of fuel.

This indicates that we no longer have to spray the nitrous ideal prior to the intake manifold and we now have the alternative to move the point of injection significantly farther back. Spraying nitrous BEFORE the intercooler, appropriate after the supercharger gives the nitrous stream extra time and much more get in touch with using the compressed air coming out of the supercharger which results in far more cooling and further elevated horsepower.

If you decide this information was interesting you might also wish to be studying about Certified Preowned Mercedes.

Superchargers preview clip 5

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