 |
To be fitted preferably, on the inside of a bend, or, in the primary divergence cone of the exhaust system (primarily for very high performance engines ie, CIK reed and rotary engines). It must be sited far enough from the engine, so as not to get too hot, but as it needs to reach 300 to 350 degrees C or higher, ( not too much higher), it can’t be too far away.
|
A basic “rule” for Karting applications is:
- Draw a horizontal line, with texta, on the inside of the bend.
- Draw another line 10mm above the first line, and as near to the flex end as possible, site the weldin on the upper line, taking care that access is okay for the welding method to be employed.
- An 11mm hole is first drilled in the exhaust header, (or a 25mm hole in a muffler), having made sure again, that access for welding is possible all around the weldin.
- Site the weldin over the hole, central, and weld on. On normal steel headers and mufflers/pipes, bronzing is the preferred method, but TIG is best for stainless pipes/headers.
Filing of the weldin to fit the weld face is not always beneficial. Depth of penetration of the probe is a consideration, especially in a header, and it is not always necessary to insert the sensor it’s full distance.
The sensor is temperature dependant. Most weldins are supplied “stepped” and can be fitted into a 25mm hole. This is only normally done when fitting into a muffler.Refer to tech help, if unsure.
For unknown applications, the FITTING SITE may be determined by using an INFRARED temp unit, which are now easily purchased at a reasonable price. This needs to be checked whilst running under load. 300-350C is a desired temp. |
|