The SUPERCIRCUIT Exhaust Headers/ Extractors made for the 2015 Honda HR-V 1.8L (R18Z9 engine) is installed to the car below.
The Honda HR-V 1.8L (coded R18Z9) engine shown below is popular among the Honda line-up. Other Hondas with the 1.8L engine carrying slightly different code and different engine tuning e.g. R18A2 on Civic FN, R18Z1 on Civic FB.
Since the 2nd generation Honda HR-V is comparatively new in this country and we probably is the first in producing the after marketing headers/ extractor for this variant, so we have more photos here about the installation and clarify the Gaskets issue which is always being asked; so our customers, installers and dealers can take this as a reference.
Firstly, when the factory stock header/ extractor is removed from the engine (ABOVE PICTURE), there is the original metal gasket (BELOW PICTURE) between the engine exhaust outlet and the header's top flange. This metal gasket is to be reused while installing the SUPERCIRCUIT header/ extractor.
It is easier to work with if the Connecting Pipe (BELOW PICTURE) is removed, it links the header to the rest of the exhaust system via this connecting pipe.
After the Connecting Pipe is removed, unveiled the bottom flange of the original Honda HR-V header/ extractor (BELOW PICTURE). Please note that, there is no gasket at this connection.
At the Connecting Pipe side, a metal ring is embedded on the flange, it is almost impossible to remove this metal ring. Honda parts catalog called this metal ring, "GASKET , EXHAUST PIPE (ISHINO) (59.5MM-60.5MM) Part No. 18212-671-003", so if you want to call it a gasket, go ahead.
This metal ring is to prevent the exhaust from leaking.
Below is how this Honda HR-V Connecting Pipe looks like. Honda parts catalog called this Connecting Pipe, "PIPE A, EXHAUST Part No. 18210-S2H-E01". So do we called it a Pipe A or a Connecting Pipe then? The choice is yours.
At the other end of the Connecting Pipe or you insisted to follow the way Honda called it, Pipe A, is sealed with the Conical Gasket/ Donut Gasket (BELOW PICTURE). The Conical Gasket has to be coupled with a Tapered Flange & fasten with Spring Bolts. Missing any one of them will not work. Remember to put them back in position.
Once the above is clear, it is now the installation of the SUPERCIRCUIT Honda HR-V Exhaust Header/ Extractor time.
First, remove all three studs from the stock header and they are to be used on the SUPERCIRCUIT header (BELOW PICTURE) later.
Install the SUPERCIRCUIT Header to the R18Z9 exhaust outlet (BELOW PICTURES), everything is just straight bolt-on. Remember to reuse the original Metal Gasket. Use of exhaust cement is recommended.
Special O2 SENSOR WRENCH is required to remove and reinstall the Honda HR-V O2 sensor (BELOW PICTURE) back onto the engine.
At the bottom flange, tighten the studs with nuts top and bottom (BELOW PHOTO). No extra gasket is required as the metal ring on the connecting pipe will seal it airtight. Exhaust cement is recommended, add extra gasket at will but not a must.
Reconnect the Connecting Pipe back in position.
The SUPERCIRCUIT headers are made of 304 stainless steel CNC mandrel bent piping, matched with stainless steel flanges and hand TIG/Argon welded with top notched craftsmanship.
To purchase or for more information about the above SUPERCIRCUIT exhaust headers/ extractor made for the Honda HR-V/ Vezel 1.8L (R18Z9 engine), please visit us at SuperCircuit exhaust Pro Shop, SS13 Subang Jaya Industrial Estate. Tel: 03 5632 2855 or Send Us A Message using the form on the right of this page.
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