will drilling a 4mm hole in the inlet side of my intercooler (to place sensor for measuring inlet temps) cause any serious damage to the effectiveness of the intercooler?

 

no mate as long as u seal and tap the end when u drill end so u dont get a vacuum air leak.id think about the amount of metal fillings thats gona fall into it tho when u drill it. ? ?

 

ikarl,

Drilling a hole in the i/c is not a good idea, as this will produce swarf which could make its way into the engine, suggest you take a look at Carl Daveys thread on the project thread about inlet cooling, this should give you the answers you are looking for..

John

https://www.scoobynet.com/cooling-im...y-t511055.html

Follow this link.

Good luck