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Increase torque and engine boost - CB 100 Honda Motorcycles

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The least expensive and easiest way to increase power and torque on any motorcycle is to buy a counter shaft sprocket that is one tooth smaller than the one already on the bike and install it. No expensive boring, rejetting, repiping, etc. You lose top speed and some fuel economy (You would lose fuel economy with any hop ups any way.) And it is easily reversible.

Posted on Jul 29, 2010


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Turbo boost adjustment for mack 470h.p. engine, how do you make this adjustment?

there is none as the engine uses all the boost it can get
if you want more power then have the pump reset to 500 hp settings
boost pressures are a result of the fuel settings from the pump allowing more fuel in to burn which produces a hotter exhaust making the turbine wheel spin faster which creates the extra boost
a genuine mack 470 hp engine is a really torque engine if driven properly and if dyno tested will produce around 450 hp at the back wheels with a relative flat torque curve which means that the rpms hang on longer before having to change gears
however to keep the maximum torque available at rpms you have to drop a half ratio as soon as the rpms start to drop as the range change will be 250 rpms and that will keep the torque range well up
don't let it bog down as all that does is waste fuel and drive time

Jul 02, 2016 | Cars & Trucks

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How can I increase the horsepower

A simple question with a not-so-simple answer. Engines are designed to last a long time "the way they are." Anythign you do to in crease hp will reduce the life of the engine.

That said, the punk way to get more hp is to add a nitrous kit. Nitous is nitorgen and oxygen. Nitrogen is an inert gas but it gets hot and takes away some heat out the exhaust. It is the oxygen in nitous oxide that helps the fuel burn more efficoiently,thus more hp. Your engine may not be able to pbhysically handle the increased torque without breaking. Aluminum pistons melt easily and nitrous in excess will do that to them. (Watch episodes of Street Outlaws" to see nitorus motors destroying themselves.)

Another way to achieve more hp is to install a supercharger and klimnit the boost to 6 psi on a stock motor. Beyond that, a "boosted" engine requires a lower compression ratio in order to handle all the increased amounts of air and fuel without destroying itself. Air-boosted engines require proportionally increased amounts of fuel to maintain "stoichiometric" air/fuel ratios. That means larger fuel injectors, a larger fuel pump, fuel pressure regulator, cooler spark plugs, and a computer to figure out what to do with it all.

Turbocharged engines have exhaust valve timing retarded by about 20 degrees to prevent "reversion." A larger exhaust sytem is required to exhaust the increases amount of "products of combustion" created by all that fuel and air. Then, too, adiabatic heating of the (now) compressed air requires cooling before entering the engine. Air molecules are farther apart when hot (less dense) so cooling the air delivers more O2 per unit volume, necessitating an intercooler for that purpose.

Hopped up turbo cars often run on E85. Alcohol has less energy so it won't take you as gas, but it burns MUCH cooler so you can crank up the boost! Guys are running 35-40 psi on the streets with E85 and making 700+ hp in some cases. But then, they have 10-25k invested and the engine is only some of that. Drive trains have to be strengthened.

Peformance engines are designed to handle the torque they make. Stock rods, cranks and pistons *may* hold together but beefed up aftermarket items are the way to go for increased reliability. A "stand alone" engine computer is required if you have any inclination of ruling the streets in your town or even being a contender.

There is, obvioulsy, a lot to know before you "add horsepower."
Visit a speed shop that has a dynomometer. They can advise you best. (They aren't serious if they don't have a dyno.) And don't listen to braggers online. They are not much help. The best way is to understand the physics of 4-cycle engines. After that, have at it and be prepared to spend a lot of money for parts and tickets! For me, the fun was in the learning!

Mar 03, 2015 | Cars & Trucks

1 Answer

I have a 97 Mitsubishi lancer mivec... There is a crossover when it hits mivec bbut not much of a boost out of it

Care of Wikipedia! MIVEC (Mitsubishi Innovative Valve timing Electronic Control system)[1] is the brand name of a variable valve timing (VVT) engine technology developed by Mitsubishi Motors. MIVEC, as with other similar systems, varies the timing of the intake and exhaust camshafts which increases the power and torque output over a broad engine speed range while also being able to help spool a turbocharger more quickly.

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Jun 03, 2014 | Cars & Trucks

1 Answer

Engine cuts out when asking it to boost up

Hi, Without knowing vehicle name or year I must state this is for petrol models, your coil needs renewing, Derv you have air coming into the fuel system. Please leave me feedback, Malcolm Campbell.

Sep 23, 2017 | 1997 Subaru Legacy

2 Answers

The Turbo Charger does not seem to engage .I was led to believe that after around 30 miles per hr. it would be like haveing a passing gear. Oh yes the car is a 1984 Nercedes SD 300 series Desiel.

The turbo charger has more to do with rpms than road speed.The turbo uses exhaust gas leaving the engine to push more fresh air into the engine thus creating higher compression and more horse power.You should feel some boost above 1500 rpms if everything is working properly.If not then you should have the system checked by a dealer or a good diesel shop.Good Luck!

Apr 02, 2011 | 1984 Mercedes-Benz Mercedes Benz 300 Class

1 Answer

Im just asking what size the motor for a 1994 ford probe???

A dual-overhead-cam 4-cylinder engine powered base Probes in 1993, developing 115 horsepower. The GT coupe held a 164-horsepower V6, also of dual-overhead-cam configuration. Both engines are Mazda designs. No more turbocharged engines were available. A 5-speed manual transmission was standard; 4-speed overdrive automatic optional. Except for a slight horsepower/torque boost in 1995 for the 4-cylinder engine, and a mild V6 torque increase the year before, powertrains saw no change in this period.


Hope this helps (remember to rate this answer).

Jan 12, 2011 | 1994 Ford Probe

1 Answer

Does torque increase with increase in backpressure

No ..rateded at RPMs and torque curves related fuel delivery and eng displacement..

Apr 01, 2010 | John Deere Muffler 1010 Diesel Tractors

1 Answer

Power to compressor but compressor will not start Unit is split system-2.5 ton, freon is good

i would check the capacitor( shiny little round or oval can) if bad get an exact replacement(mfd and voltage) if it is good i would try adding a boost capacitor(increases starting torque by 300%)

Jul 30, 2009 | Ruud Matching Split Air Conditioner

1 Answer

Increasing Torque in Grand Vitara 2007

If it's a fuel injected motor u coukd add better software
Can also flow and port the head
Will get at least 10% overall increase

Mar 07, 2018 | 2007 Suzuki Grand Vitara 4WD

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