Throttle Body Port and Polish on a 2006 Chrysler 300

Throttle Body Port and Polish on a 2006 Chrysler 300. Turned out well, it was my first one ever done so it should go way easier next time. Car drove perfect, no issues at all. I didn't notice a horsepower Boost but the throttle response is quicker for sure.

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DIY: Porting & Polishing a Throttle Body
Video tutorial on how to port and polish a vehicle's throttle body. In order to do this procedure, you must remove the throttle body from the engine so you can probably polish and port the throttle body and the material shavings do not enter the engine. This is a very small horsepower increase depending on the design of your engine, but it will improve throttle response and reduce the amount of oily residue build up. Do not remove any material from around where the throttle plate touches in the bore either. Also when doing this procedure, I would recommend purchasing a new throttle body gasket so you won't have any vacuum leaks once reinstalling. This particular tutorial was done on a 1997 BMW 540i. Website: http://4diyers.com Facebook: https://www.facebook.com/4diyers Google Plus: https://plus.google.com/+4DIYers Twitter: https://twitter.com/4DIYers Instagram: https://www.instagram.com/4diyers/ Tumblr: http://4diyers.tumblr.com Pintrest: https://www.pinterest.com/4diyers/ Tools/Supplies Needed: -socket set and ratchet -throttle body cleaner -lint free clothes -new replacement throttle body gasket -tape -rotary grinding stones -penetrating oil -Dremel/rotary tool -flap wheel drum sanders ranging from 40 grit to 320 grit -400 grit wet/dry sanding paper -abrasive pad (finer than 400 grit) -metal polish -thread locker Procedure: -first remove the throttle body from the vehicle -removal processes will vary between manufacturers, but normally it is bolted to the intake manifold, the throttle cable will need to be disconnected it a manual unit, and then unplugging the throttle position sensor -clean any oily build-up inside of the throttle body -remove the butterfly from the throttle body, most are held in with two screws that go into the shaft -if you can, also remove the shaft and linkage -tape around the shaft or the hole where the shaft was so no metal shavings get into that area and cause premature wear for the bushings or bearings -depending on the finish of the throttle body's bore, there may be edges which you can to smooth out -in order to smooth out those edges, you can use grinding stones for either a drill or rotary tool such as a Dremel -when using a grinding stone, its best to use WD-40 penetrating oil with it so the aluminum material doesn't plug up the stone and it'll no longer cut away any material -once you are satisfied with the sharper edges being ground down, you can down move onto sanding drums for the rotary tool -you can also flare out the bore where the air enters slightly so it has a smoother air flow into the throttle body -you can even port match the throttle body to the intake if the throttle body is smaller -if you don't have access to a rotary tool and sanding drums, you can also use flap wheel drum sanders that can be used on a drill -the flap wheel drum sanders are available in a variety of grits such as 40, 50, 60, 80, 120, 180, 240, and 320 -when using the flap wheel drum sander, you can add water to help with finer sanding as to keep the dust down -if the surface isn't too porous such as what is shown in the video, start out with a finer grit like 120 and move your way up -once you have reached the highest grit in a flap wheel drum sander, you can now do some sanding by hand with 400 grit and add some water for lubrication -once satisfied with your product, you can now move up to an abrasive like Scotch Brite -depending on the color, will depending on how course the abrasive pad material is -I started out with green and then moved onto the red pad for the finest compound -you can also use water with this too to help finer sanding and to keep the dust down -again once you are satisfied, you can now move onto a metal polishing compound -the metal polishing compound I would recommend is Eagle One -apply the polishing compound paste and rub until highly mirrored finish -multiple coats can be applied to achieve a higher polished surface -once you are done with the bore, you can now move onto the throttle plate -most throttle plates are smooth to begin with so you can skip directly to the Scotch Brite stage using the same procedure and finally move onto the metal polishing compound -once done, you are ready to reassemble the throttle body -make sure you peen the thread of the screws on the other side to ensure they don't come out or apply Lock Tight thread sealant -install new throttle body gasket along with throttle body to your vehicle -assembly in reverse of disassembly Thank you to all those who watch my videos and support my content. Don't forget to subscribe to my channel for future tutorial videos and like my video if you found it helpful. New videos are always being uploaded every week! © 4DIYers 2013 All Rights Reserved No part of this video or any of its contents may be reproduced, copied, modified or adapted, without the prior written consent of the author.





Throttle body port matching to intake manifolds
Join me on Facebook! www.facebook.com/omgitsmrmack Just an idea on the proper way to do this.. sometimes the material can be thin in areas and you can really push the casting.. lucky for the hemi guys its not a real concern... best thing to do is always to measure the manifold and check thicknesses before you even buy a throttle body.. the other thing thats kinda silly is big throttle bodies with smaller diameter piping feeding it air.. if anything keep the smaller throttle body and keep that velocity up.. and just remember that bigger is not always better!!!!




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