The K20 engine series has a number of variants, typically after the K20A they start getting numbered and count up, although some other names do exist. This engine is coming to the end of life for its second cam chain. The K20 series engine was a strong engine for its size, as this engine used latest and greatest technology along with sound engineering design to create an engine that could perform competitively for a long time. K20 Engine Tuning — Throttle Bodies Individual throttle bodies were banned for the K20 engine although this has not been as big a handicap as anticipated. And one of the best bang for the buck modifications that can be done is a K-Swap. If using a preset type torque wrench, tighten slowly be sure not to over tighten. Since Formula 3 engines are capped at 2.
Instead it only has 2 cam lobes on the intake side and 1 on the exhaust lobe. The K-series engines are equipped with valvetrains and use roller rockers to reduce friction. A modified K24 engine is used in motorsports, such as Formula 3. Then remove the pin from the auto tensioner. This will interfere with a manual transmission using a traditional intermediate shaft. A common mistake that some tuners make is to use too much ignition advance which may not be sufficient to induce detonation but it still creates excessive and unnecessary loading on the pistons, rods, bearings and crankshaft pins.
Remove old liquid gasket from the chain case mating surface, bolts and bolt holes. Even the more reason to go K-swap! This engine came out to replace the B Series model of Honda motors that came before it which brought with it a better overall design quality, including a more refined Valvetrain and a better overall thicker build quality. The target power output for the B20 was 330hp which is impressive considering the 8500rpm rev limit imposed by the rules. Combustion 1 K20C1 system Fuel type Output output See left for specific application. For a naturally aspirated engine, the torque curve may as well have been drawn with a straight edge, and horsepower builds in a very linear manor, making for an easy to drive and tractable powerplant.
The main cause of the heavy oil consumption was worn valve guides. Maximum boost pressure is 13. The cylinder head is torqued down to the correct settings with an electronic torque wrench. There are many variations and what vehicles they come out of. The Mugen marvel is part Civic Type R and part S2000, and it is fascinating. Internet speculation is that the K20A head was mated to the F20C block for ease of converting to belt-drive, a series regulation. Please be sure to email us at with any questions or concerns! It combines the head from the K20A to the block of an F20C.
Apart from the normal wear and tear related to piston rings and valve guides etc, the engine components are in remarkably good condition! Kelford Kelford Cams, turbo specific lobe designs feature aysemetrical valve motion to reduce the overlap area while retaining maximum area for improved cylinder fill intake and emptying exhaust. K24A8 This engine is found in the 06-07 Honda Accord and 07-08 Honda Element. Now check the chain case oil seal for damage, replace if necessary. Additional notes K20Z3 as fitted to Ariel's Atom 3. Protech or Shocktec aluminium front and rear coil over dampers, differential and driveshafts, rear discs and callipers. One of the other key components to the swap is the shifter and linkage.
The older , seems to have as a period-correct race engine. With aftermarket sleeves, you can push upwards of 1,000whp. If you chose to use the cast aluminum pan from the K20A2, remove the steel pan and pump now. This is an inexpensive process which makes the egine look a whole lot better. It also has smaller ports than the Type S and Type R. After the head is attached to the block you will need to move the cams and crank to top dead center.
This engine shares the same downfalls with the K24A4 engines as the pistons will contact the K20 cylinder head. The engine and trans plus harness and ecu, etc. The have final fitment together with an for improved reliability. In any internal combustion engine, the cylinder head is the key to unlocking power. The are very consistent but we still process the rods to ensure the rods are balanced end to end and the pistons are also balanced, all within 0.
This is not necessary for operation, however, to keep engine oil temperatures down during sustained high revs, it is recommended. With the standard kit exhaust and silencer, the results are a 10% increase in top end bhp to 220 but the real gains are to be found in the mid-range torque. Continuing with the open deck design, the block is beefier. To run this setup you will also need a k20 water pump housing as it is different than the k24. The cylinder block has been bored and honed to suit the new oversized. The rocker arms and shafts are installed ready for some Toda Racing A3 camshafts. Combustion system Fuel type Output output See left for specific application.
Measure the bolt in 4 different places along the threads and if any diameter is less than 10. This engine buildup consists of a 2. We opted to use a Cometic K24 head gasket for our project. This motor also comes with an available 5 speed transmission and 5 speed auto. Cosworth recommend a bore clearance as low as 60 microns, so any tight spots may lead to a catastrophic seizure. Less friction, more rpm potential, faster action cam profiles.