How much power can stock STI internals handle?
Skim through the Subaru forums and you’ll find the question on so many STI owners’ minds, “how much horsepower can my EJ257 handle?” The answer is different for everyone, but the general consensus is that the 400-450whp range is when you might want to clear out the garage and get ready to pull a motor.
How much horsepower can a stock EJ25 handle?
300 whp
300 whp: The EJ20/EJ25 engines can handle 300 whp maximum with stock internals with no further modifications other than a proper fuel management tune.
How much HP does a stock STI block?
Registered. Stock block could hold up to 32-33PSI and handle about 5-600HP on the stock block internally wise you looking at 400HP safely, but it can take up to the same amount as the block itself if you sleeve it, and are running higher boost.
What is 20g Turbo?
a 20g is a Mitsubishi Heavy Industry turbo that is available in a TD05 (similar to your stock exhaust wheel) or td06 (larger wheel). It flows about 44lbs/min and can make 400hp.
How long does a stock STI clutch last?
They’re designed to last at least 50,000 miles, but it can vary based on how well you take care of your car and what your driving style is. If you do a lot of city driving, you may find that your clutch wears out faster due to the frequent shifting between lower gears.
How much boost can a stock ej255 handle?
max boost at 24.2psi and tapers off at 22.5psi at 7Krpm.
How fast can a WRX Sti go?
174 mph
The top speed for the Subaru WRX is 155 mph and 174 mph for the WRX STi.
How much HP can a 20G turbo make?
About 475 crank HP. lbs/min.
What kind of turbo does an STI have?
The Subaru WRX STI benefits from a turbocharged 2.5L 4-cylinder SUBARU BOXER®, which creates raw power fused with complete poise, on the road and on the track.
How much does it cost to replace a clutch?
The cost to repair a clutch can range between $500 to $2,500. It really depends on the car. Performance cars, exotic cars, and European cars are more expensive to replace the clutch than Japanese economy cars. Four wheel drive vehicles cost more than two wheel drive vehicles.
How long are clutches supposed to last?
Most clutches are designed to last approximately 60,000 miles before they need to be replaced. Some may need replacing at 30,000 and some others can keep going well over 100,000 miles, but this is fairly uncommon.
How much power can a stock EJ255 make?
They will hold up to 400 whp (again as shown in our PPIHC car), but if you want to push up to or beyond that power level, a set of aftermarket H-Beam rods would be recommended. Beyond that, if you replace the pistons and rods, the next weak link would really be the cylinder walls themselves.