TB port & polish...?
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Originally Posted by 02sierraz71_5.3
...I wish I could find more detailed info on how to's...
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yeah, that's a good article - I'm glad it covers where 'not' to port.
I worked on mine for 2-3 hours one day, sanding things down completely by hand. There is DEFINITELY a lot of work left to do, but I did notice slightly better low speed throttle modulation and therefore a little increase in mileage.
I think it's worth the time.
I worked on mine for 2-3 hours one day, sanding things down completely by hand. There is DEFINITELY a lot of work left to do, but I did notice slightly better low speed throttle modulation and therefore a little increase in mileage.
I think it's worth the time.
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I just got a new dremel today mainly because I wanted to do this while the truck is down for the cam swap. I have no idea what attachments to use. There are silicone carbide grinding stones, aluminum oxide grinding stones (which arent as tough), and tungsten carbide cutters for use on hardened steel. What would I use to polish it after the porting is done?
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Originally Posted by marc_w
yeah, that's a good article - I'm glad it covers where 'not' to port.
I worked on mine for 2-3 hours one day, sanding things down completely by hand. There is DEFINITELY a lot of work left to do, but I did notice slightly better low speed throttle modulation and therefore a little increase in mileage.
I think it's worth the time.
I worked on mine for 2-3 hours one day, sanding things down completely by hand. There is DEFINITELY a lot of work left to do, but I did notice slightly better low speed throttle modulation and therefore a little increase in mileage.
I think it's worth the time.
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Originally Posted by greentahoe
I just got a new dremel today mainly because I wanted to do this while the truck is down for the cam swap. I have no idea what attachments to use. There are silicone carbide grinding stones, aluminum oxide grinding stones (which arent as tough), and tungsten carbide cutters for use on hardened steel. What would I use to polish it after the porting is done?
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Originally Posted by 04sierra
Did you have any problems with yours since it's the electronic TB? I have heard a lot of people had problems when they did this to there 03+.
I was very carefull as to not take any material away from the "sealing area" of the throttle body blade... (the area in that illustration in the link shows the 'blade contacting). I didn't go within about 1/4" of the 'blade, on the engine side and airbox side of the TB.
If you take away any material from the 'body where the 'blade rests at idle, it will throw off the IAC/idle calibration because an additional (unknown) amount of air will be sneaking in at idle.
It's not a super hard fix if you have tuning software... but you know, it's just one more thing to worry about.
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Im going to start this tomorrow. I went and got a carbide cutter, silicone grinding stone, and an aluminum grinding stone. I'll work down in that order and then follow up with sandpaper bits. How did you guys make certain you werent taking too much material out? Is there any point in smoothing the outside lip?
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once you have it off and look at it, you will be able to tell how much you can take off. there is a good bit of material there to be removed. as far as the lip goes, you can make a sharp edge if you want. i did on mine but it isn't razor sharp or nothing.