#Compression ratio calculator upgrade#
#Compression ratio calculator software#
#Compression ratio calculator code#

Garrett GTX 35 Turbo, 102 Octan fuel = best CR 9:1 power output with our ECU tuning 420 hp.Ģ.5L TFSI engine as used in the Audi RS3 or TTRS:

#Compression ratio calculator upgrade#

KKK Upgrade Turbo V2 BAR-TEK, 102 Octan fuel = best CR: 9:1 power output with our ECU tuning 330 hp.Ģ.0L TFSI engine as used in the Golf MK5 or Audi A3 until year 2012: Garrett GTX28 Turbo, 102 OOctan fuel = best CR 8,5:1 Examples for a good engine setup:ġ.8T (20V) engine as used in the Golf MK4 or Audi TT until year 2005: The target should be to find the correct compression ratio for your engine setup, fuel quality and boost. The knocking control will decrease ignition so engine power will be lost to safe the engine from damage. It is just for safety reasons for example if fuel with low Octan index will be used. Newer engines have a good knocking control, so they recognize when the combustion is not in a perfect range, but this safety feature should not act all the time. More boost means more cylinder filling and therefore the risk of knocking is going up. But if you plan a bigger turbo the Compression Ratio needs to be lowered to avoid combustion knocking.

#Compression ratio calculator software#

Until a certain limit the original Compression Ratio can stay, only the ECU Software needs to be updated for the higher boost. This can be done with increasing the boost on a Turbo engine. Tuning an engine means that we want more power. The engine will be lagy and slow during acceleration.

Too low CR will end up with inefficient combustion and power drop.

Too high CR or bad fuel with low Octan index can lead to engine failures due to knocking combustion!.

Basically can be said, that with a higher Octan index also the CR of the engine can be higher. The available fuel sort is also one key factor (Octan index). The CR must fit to the engine design or specification. The ratio between the cylinder capacity and the compression chamber is known as the Compression ratio (CR). The correct Compression Ratio is very important for each engine. Apart from this they can be also reused as many times as needed. The ARP studs are much stronger than OEM bolts, so they can hold more boost and engine revs. In addition to each engine build we recommend to use also ARP studs together with the new gasket. So if the wished thickness is not in stock when you order, it could take some time until we can ship it to you. Please be aware, that each gasket will be produced after your order. This type of head gasket is used in motorsports as they offer the best sealing in combination with reliability. Therefore we offer steel multi-layer head gaskets in different thicknesses. The easiest way to reach your wished Compression Ratio is the head gasket thickness.

#Compression ratio calculator code#

This makes sense, if your engine code is not in our list, or if you have made big changes to your engine hardware like other pistons for example. You can fill all the data manually in the grey fields.Thicker head gaskets will drop your compression ratio. All values will be filled out automatically and you can „play around“ with the thickness of the head gasket. Choose your engine code from the drop down menu.Hence the - (negative) number in the calculator. Same goes for a dome where it is positive cc's on the piston but a reduction in cylinder volume. Hence the positive number in the calculator. This seems very confusing but it is because even though it is a -cc on the piston, those same cc's are gained in cylinder volume.

The cc for the piston is entered as a positive number on a -cc Dish or Flat top piston and a negative number on a dome piston.