Gas flowing throttle body on valver, is it worth it?

[joby 0]

Just finishing of my 9a conversion from kr and wondered if you get much of a noticeable gain from flowing the throttle body and what tools have you used on a standard drill or do i need a dremell or the likes :)

[PaudieG60 0]

Every little helps!

 

I fitted one to my G60 and she feels abit sharper when you put the foot down but i wouldnt say she's up on power!

 

 

I bought it done already but i think a dremell was used

[Swompy 0]

So how would you go about doing this?

 

Just get a drill or dremell with a polishing head and just polish it all smooth :shrug:

[culshaw 1]

im sure you can get a knife edged one off ebay?

[Erny 0]

Go easy knife edgein, files, dremels and different grades of sandpaper,

[davidwort 0]

no, don't think it makes any difference at all, still I smoothed mine, especially where the two pieces join and create steps, and I flattened the screw heads down and waisted the butterfly supports, from head flowing information posted up on club GTI, I don't think the 16v throttle is a restriction in the inlet system anyway, but it can't do any harm as long as you don't take tons of material off around the butterflys - you might make the throttle response very snappy ON/OFF then.

 

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[joby 0]

Thanks for the info :D

[aide 0]

i made this years ago - two throttle body halves welded together, and the manifolded adjusted to suit.......difference in power???

 

 

 

 

as dave says... none, live & learn eh :lol:

[Swompy 0]

i made this years ago - two throttle body halves welded together, and the manifolded adjusted to suit.......difference in power???

 

 

 

 

as dave says... none, live & learn eh :lol:

 

:lol:

 

Nice bit of work there tho :notworthy: shame it didnt pay off

[dirtytorque 0]

i made this years ago - two throttle body halves welded together, and the manifolded adjusted to suit.......difference in power???

 

 

 

 

as dave says... none, live & learn eh :lol:

 

what about the "improvement in throttle response" that I hear people talk about?

[aide 0]

what about the "improvement in throttle response" that I hear people talk about?

 

well tbh i'd looked around for a webber fire breather for ages, and that double arrangement was me trying to make something similar, that creation and my tests weren't very scientific, the problem i had is the TB alloy is so soft that the apertures distorted when they were welded, so when i inserted the butterfly's they didn't match perfectly and i had 1500rpm idle :)

 

the throttle response didn't feel any better (from a 1500 rpm idle :lol: ) but i was more interested in better in gear accelleration and top end, neither of which felt any better, pretty subjective i admit, maybe its because i'm always concious of imagining gains that aren't there :shrug:

 

if i was doing it again i'd get a machine shop to make the apertures perfectly circular and then get butterfly's fabbed to suit, maybe in conjunction with greater displacement and p&p'd head it would have worked better, all i was running at the time was a four branch and the exhaust cam mod.

[steveo29 0]

ive heavily dremeled mine , sanded back as much as i dare and smoothed out

 

cant notice jack tbh ...spend your money on something else imo