Port and Polish Throttle body - Page 5 - Saxperience

JamesR^m · 23rd February 2009, 17:16

until you have held a original one and a ported and polished one in both your hands next to each other you cant say anyhing. I have and can see where the ported and polished one has been ground down. And until you have fitted one to your car you cant say it does nothing.

TrevorRS · 23rd February 2009, 17:17

Quote:

Originally Posted by luthor1

I think it's important to test a standard throttle body against the ported and polished one, as long as the standard one is *THOROUGHLY CLEANED* first and de-gunked.

I wonder how much of the noticed improvement is because the TB is lovely and clean?

I cleaned out mine recently as it had loads of gunk in it, and afterwards there was amuch crisper feel to it, so bear this in mind.

Andy

i agree... i can see there being much in it on a stock car.

KamRacing · 23rd February 2009, 17:19

Quote:

Originally Posted by luthor1

I think it's important to test a standard throttle body against the ported and polished one, as long as the standard one is *THOROUGHLY CLEANED* first and de-gunked.

I agree Andy that you'd have to test like for like

KamRacing · 23rd February 2009, 17:25

Like I said, we will do an unbiased RR. We dont sell this item or have the manufacturing facilities to do anything similar so its no interest to us whether this makes a gain or not.

I personally see no point to modifying the throttlebody as thats not the restriction in my eyes but the throttleplate spindle removal could let a tiny bit more air in. Whether theres any difference I am happy to check out.

Kev

TrevorRS · 23rd February 2009, 17:26

Quote:

Originally Posted by SaXo_vtr123

until you have held a original one and a ported and polished one in both your hands next to each other you cant say anyhing. I have and can see where the ported and polished one has been ground down. And until you have fitted one to your car you cant say it does nothing.

im not an idiot, i work at bikes for a living and race myself.

im well aware of the differences i have removed the flash from many carbs, aswell as the half a spindle changed the shape of the butterfly to aid WOT air flow and polished them.

I dont want an argument.. i was just trying to find out what had been done... as by the fact he had said "ported" i for some reason assumed he was making the venturi bigger not just removing flash,polishing and cutting away half the spindle.

Trevor

JamesR^m · 23rd February 2009, 17:29

KAM if you do the RR let us know of the results.

JamesR^m · 23rd February 2009, 17:30

Quote:

Originally Posted by TrevorRS

im not an idiot, i work at bikes for a living and race myself.

im well aware of the differences i have removed the flash from many carbs, aswell as the half a spindle changed the shape of the butterfly to aid WOT air flow and polished them.

I dont want an argument.. i was just trying to find out what had been done... as by the fact he had said "ported" i for some reason assumed he was making the venturi bigger not just removing flash,polishing and cutting away half the spindle.

Trevor

Just out of interest what is a "WOT"??

gdwelsh · 23rd February 2009, 17:30

Fair one

TrevorRS · 23rd February 2009, 17:38

Quote:

Originally Posted by SaXo_vtr123

Just out of interest what is a "WOT"??

Wide Open Throttle

Goodwrench · 23rd February 2009, 18:32

Fair play from Spencer, he has the pics to show you what he is doing. £26 is a fair price for the labour involved. Decreasing the frontal area of the throttle spindle is a delicate job but yields significant results, along with knife-edging. Induction wise, removing obstructions helps to make the air flow unformly, minimising the deceleration of air flow through the TB.

Check out some old-skool power tuning books. Vizard a-series, pinto...

On the other hand, if you have the time and patience and experience not to c0ck up your TB with the dremel and you enjoy being hands on then great.

DusheR · 23rd February 2009, 18:45

Quote:

Originally Posted by KamRacing

Like I said, we will do an unbiased RR. We dont sell this item or have the manufacturing facilities to do anything similar so its no interest to us whether this makes a gain or not.

I personally see no point to modifying the throttlebody as thats not the restriction in my eyes but the throttleplate spindle removal could let a tiny bit more air in. Whether theres any difference I am happy to check out.

Kev

That would be interesting if you could. I should be fitting mine later on this week

GroomGTI · 23rd February 2009, 19:15

made no diffrence at all on my car imo.

Nij · 23rd February 2009, 19:19

Quote:

Originally Posted by Groomster-VTS

made no diffrence at all on my car imo.

+1 the only difference is my car seams to like the golden nectar a little more

andywiddss1 · 23rd February 2009, 19:22

i had one on and wayne at chipwizzards said they give 3bhp max , but didnt feel any different to me

spencer_cammedvts · 23rd February 2009, 21:30

its not just a polish with motal polish and then half the spindle.

there are various stages in the process and i spend around 1.5 - 2 hours on each one. its an industrial dye grinder that i use along with a milling machine, various grinding wheels, flap wheels and a selection of small files. the throtlebody is totally dismantled and put back together with the butter flu being removed from the body while the process is carried out.

i firstly mill it out to a desired radius upto the spindle. then i knife edge the opening rim and very gradually chamfer the opening in towards the throttlebody and remove any ridges/steps present. its then a matter of machining the front half of the spindle and grinding down the screw ends. after this i go round the whole of the throttlebody with a flap wheel and small file to take away any other sharpe edges left on the spidle and the rest of the opening.

then its a matter of using various flap wheels & wet & dry wheels along with cutting paste to give a mirror finish.

so no its not just cutting the spindle and cleaning the throttlebody up.

gains are had by making less of an obsticle for the air to pass through and these give you better MPG under normal driving conditions because you dont have to be so heavy on the throttle to get the required power to pull the car.

NOTORIOUS_CAT HAD a ported TB and a standard tb off me for a vts to do a back to back test. if interested contact him as he was going to post up the results.

JamesR^m · 24th February 2009, 13:57

All the people saying it made no difference, i dont see how not, i can feel the difference, before i fitted mine i went out and drove around for 30mins, then fitted it and went back out and could tell the difference. Its not that noticable, just consentrate and you will notice that you dont have to push teh accelerator as much.

Anyway spencer as i have said i rate you service very highly!