Mike D'Silva Posted 29May, 2022 Report Share Posted 29May, 2022 Here's a terrible vid of my test stand with my latest engine running. Engine will prob be for sale at some point too. (after I put it in my car and run it in) Scott930, Classic Wheels Australia, Raven and 9 others 10 2 Quote Link to comment Share on other sites More sharing options...
Yeatesy Posted 29May, 2022 Report Share Posted 29May, 2022 Enjoyed watching that Mike, well done Mike D'Silva and Raven 2 Quote Link to comment Share on other sites More sharing options...
tomo Posted 29May, 2022 Report Share Posted 29May, 2022 Great stuff Mike 👏 Mike D'Silva 1 Quote Link to comment Share on other sites More sharing options...
Zelrik911 Posted 29May, 2022 Report Share Posted 29May, 2022 Good work & explanation, great to test the motor before installing in car. Saves having to pull it out if theres something like an unforseen oil leak. Did you have the O2 sensor plugged into the ECU? I am curious about the 2 different O2 readings you mentioned. Are you going to plumb in a Wide Band O2 to the 3.2 ECU? Mike D'Silva 1 Quote Link to comment Share on other sites More sharing options...
Mike D'Silva Posted 30May, 2022 Author Report Share Posted 30May, 2022 3 hours ago, Zelrik911 said: Good work & explanation, great to test the motor before installing in car. Saves having to pull it out if theres something like an unforseen oil leak. Did you have the O2 sensor plugged into the ECU? I am curious about the 2 different O2 readings you mentioned. Are you going to plumb in a Wide Band O2 to the 3.2 ECU? hi the new chip does away with the need for the factory O2 sensor. I do have a wideband plugged in for monitoring purposes. But the ecu does not require it for everyday running. Steve Wong chips are claimed to be pretty accurate for the intended engine. I'll probably mount a wideband gauge in the car as this chassis will become my "test mule" for future engine projects... Quote Link to comment Share on other sites More sharing options...
st3ve Posted 30May, 2022 Report Share Posted 30May, 2022 Nice rig! The wideband readings may well be different due to the tailpipe mount, which is not ideal. My (limited) experience is with motorcycle systems (hence short) and you can even get inaccurate readings with the sensor in the collector box if you have a very short secondary/muffler/megaphone. As I've been told, pressure wave reversions will cause air to be drawn up the pipe, compromising readings if your sensor is too close to the tip. I guess Porsche's are pretty unique in the auto world in having very short exhausts just due to engine position, so this might be an issue even in a normal mid-pipe welded bung. A tip mounted sensor like in your video might be even more affected by this phenomenon (which I have been told about by people's experience I value, but never empirically proven/disproven myself). Also, sensors can be poisoned by types of fuel or additives or other factors. Given your rig really lends itself to trying it out, I'd be interested in what might happen if you swap positions of the sensors. Peter M 1 Quote Link to comment Share on other sites More sharing options...
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