Has anyone actually seen temp testing data from afermarket turbo heat shields? I've looked everywhere and couldnt find anything. We have a couple temp probes that we used during designing of our heatshield but i was thinking about doing some more robust testing so there is some good data out there. So many people out there run no heat shield on their car and we wanted to know the difference. Your thoughts?? In the following days we will be posting up the temp numbers we have at idle (obviously at operating temp) and cruising with cruise control at 60mph. There are multiple locations we have selected and soon enough we will have the results posted!! Stay tuned..... So here it is, after a long day of testing yesterday we are very pleased to bring you some really exciting results! To give you a little background these tests were done on a 2002 WRX with a 2.5l block with 2.0l heads and a VF39. STI TMIC, aftermarket downpipe, and Samco Throttle Body Coupler. All of the tests were performed in one day with the air temp @ 65 F. All temps have been recorded in F. Both IAT's for pre and post readings were measured INSIDE the pipes @ the connections. All numbers recorded are true to readings and have not been modified in any way, enjoy! Now this graph shows the IAT's INSIDE the system at the Turbo Compressor Housing Exit (PRE) to the Throttle Body Coupler (POST) So what have we concluded, well the data shows it all! The heat shield is in fact VERY effective at blocking heat from vital parts of the engine as well as keeping the IAT's SIGNIFICANTLY lower. Will
Looking forward to the data. I don't have a heat shield right now and have thinking about maybe getting one.
^THIS....is a damn good idea! Thermal coating the heatshield for maximum effectiveness would be the next step for me.
Nice work on the data. I applaud you for taking the time to do it. There are a ton of categories you could expand on. Such as using the heatsheild vs. ceramic coating, vs. heat wrap, etc. Also, you need an infrared temperature meter to check the temperature of other components in that area like wiring, brake lines, A/C lines, etc. You've struck the tip of the iceberg, so keep plowing into it.
For what it's worth, after installing my wrapped downpipe without the heatshield, my IAT's were within 2* of my IAT with the stock downpipe w/ heat shield on while logging under normal driving conditions. The heat soak really didn't effect it until I parked, then it really heated up. I was impressed at how well the wrap worked though.
Isn't the stock IAT measured at the MAF? If so I wouldn't expect it to change much until it hits an intercooler sitting just above a hot turbo.
Yes. That data is posted, however. The only real way to measure air temp is right before the throttle body.
So how was the IC connected to the hood?? You post IC temps seem high for only being 65 outside. I usually within 2 degrees of ambient air temp post IC with my old setup. Also, what kind of numbers were you seeing under boost. Just cruising stuff only gets you so far, it is more important what happens once you start rolling into the boost. Russ
Stock or after market intake plumbing was not posted. That can be a major discrepancy. With an underhood intake I was seeing temps higher than ambient even with a front mount intercooler. As much as 20° F on an 85° day. Bad business right there. No wonder I spent some serious time on a real cold-air pre-turbo intake. As Russ said, proper IC baffling on a top-mount is a big deal. More details and scenarios would shed more light on the subject.
