What grinder for TB porting..
What grinder for TB porting.. i use a dremel..and
i always use the rough sandpaper bits when i ported my TB and my friends..
then go smoother and smoother then i polish it..
but is there a faster way to do this..like what tool do yall use or wat bits?
i always use the rough sandpaper bits when i ported my TB and my friends..
then go smoother and smoother then i polish it..
but is there a faster way to do this..like what tool do yall use or wat bits?
I forget the exact name of the bit. But I used a small metal bit with "teeth" (looks like a rear end gear set) to get the chunck of the metal out. Just be careful not to take out too much. Then I did the normal sanding wheels and polish.
That what I used also. It made the porting ALOT faster.
Why not just take handfuls of sand when the car is running and throw it in the TB while pushing back on the throttle? Kind of like a sand blast port? It worked for some kids on the honda forums.
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A carbide bit with some lube to keep the aluminum from plugging up the bit and a 120 grit cartrige roll is what I use. You dont want to polish the surface slick, a fine sanded surface has proven to be better for air flow.
I also remove approx. half the thickness of the shaft on each side of the blade to further improve flow.
Here is a picture of the last one I did, you can barely see the throttle shaft.
I also remove approx. half the thickness of the shaft on each side of the blade to further improve flow.
Here is a picture of the last one I did, you can barely see the throttle shaft.
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Didnt they do that on an Audi TT? Dumbasses lol 
He could have.
On a carbed application, where the fuel isn't sprayed as finely as an injector does, the intake ports of the heads are needed to be a bit more "rough" to help "stir" the air/fuel mixture up to help with atomization for the combustion process. It makes for a more efficient burn of the a/f mixture.
Last edited by BriancWS6; Dec 5, 2007 at 08:25 PM. Reason: forgot a word
We're not talking about heads here on carbed engines where fuel atomization is critical. In this case, the smoother the better, although there's not going to be a significant difference between a fine sanded surface and really polished when it comes to these throttle bodies.
He could have.
I can explain the instance where it DOES make sense, it's just not in a throttle body application, and it's not really talking about actual flow, but rather results.
On a carbed application, where the fuel isn't sprayed as finely as an injector does, the intake runners are needed to be a bit more "rough" to help "stir" the air/fuel mixture up to help with atomization for the combustion process. It makes for a more efficient burn of the a/f mixture.
He could have.
I can explain the instance where it DOES make sense, it's just not in a throttle body application, and it's not really talking about actual flow, but rather results.
On a carbed application, where the fuel isn't sprayed as finely as an injector does, the intake runners are needed to be a bit more "rough" to help "stir" the air/fuel mixture up to help with atomization for the combustion process. It makes for a more efficient burn of the a/f mixture.
thank you for explaining that...that makes sense..
but i was thinking for airflow..the smoother the better..and i understand it wouldnt be much of a difference at all but it sure looks nice
Im not the air flow wiz by no means but I have heard from a few people that a fine sanded surface retains a layer of air molecules where a polished surface does not. Air flows better over this layer of air than it does a polished metallic surface. Ither way in my oppinion its a waist of time and wouldnt be make a measurable difference in power.
Yes, I know a little about fuel atomization and puddling, it has nothing to do with the fuel side of things, only air flow/delivery.
Yes, I could have gone hog wild on the throttle body, I spent a total of approx. 30 minutes between two break periods at work on the one pictured.
Would it have made any more power if I spent more time on it.. probably not.
Would it have sold for more money if I spent more time on it.. probably not.
Yes, I know a little about fuel atomization and puddling, it has nothing to do with the fuel side of things, only air flow/delivery.
Yes, I could have gone hog wild on the throttle body, I spent a total of approx. 30 minutes between two break periods at work on the one pictured.
Would it have made any more power if I spent more time on it.. probably not.
Would it have sold for more money if I spent more time on it.. probably not.