porting and polishing

10th February 2010, 14:11

has anyone on here got a ported throttle body? as ive ported mine and want to know whats out there lol ill put pics up

10th February 2010, 14:58

10th February 2010, 15:04

NICE WORK! You could take over where spencer left off? Doing them for people on here? I will get you the thread now

http://www.saxperience.com/forum/showthread.php?t=48678 There was always a demand for them tbh

And i have had mine done, will dig out some pics. Also what did you use to port it? The last 2 pics havn't got the spindle in have they?

10th February 2010, 15:09

part lathe part die grinder then up through the wet n dry n finish with some g10

10th February 2010, 15:10

Quote:

Originally Posted by shayne_vtr

part lathe part die grinder then up through the wet n dry n finish with some g10

Pretty much the same process spencer did, looks very good

Is the butterfly knife edged? Spindle cut on one side? Screws cut down?

10th February 2010, 15:36

knife edged the butterfly taken the idle port own as far as a could and knife edgd that knife eged the throttle mouth but not touched the spindle,can do tho infact ill do it now

10th February 2010, 15:39

Quote:

Originally Posted by shayne_vtr

part lathe part die grinder then up through the wet n dry n finish with some g10

Quote:

Originally Posted by shayne_vtr

knife edged the butterfly taken the idle port own as far as a could and knife edgd that knife eged the throttle mouth but not touched the spindle,can do tho infact ill do it now

Have you cut the retaining screws down? (Loctite can help, but they should still grip it cut correctly) Hacksaw on the spindle but make sure it's marked up correctly

10th February 2010, 17:09

Really would not bother putting to much effort in as it does nothing. Your not opening the inlet size so no extra air will go through

10th February 2010, 17:34

Quote:

Originally Posted by Aron

Really would not bother putting to much effort in as it does nothing. Your not opening the inlet size so no extra air will go through

+1 alot of effort for vitualy no return

10th February 2010, 17:35

thats where you fail mate. by knife edging the butterfly and opening the throttle up by over a mm and polishing the whole thing all i have done is wasted my time? i dont think so

10th February 2010, 19:01

Quote:

Originally Posted by shayne_vtr

thats where you fail mate. by knife edging the butterfly and opening the throttle up by over a mm and polishing the whole thing all i have done is wasted my time? i dont think so

But your not getting anymore air in to the engine. Remember, the inside of the inlet manifold will also have a rough surface to it.

10th February 2010, 19:26

went to do this today but the screws on the butterfly are so brittle so just left it

looks reli nice tho shame no1 will see it

10th February 2010, 20:00

Looks good mate, well done.

12th February 2010, 01:11

and it does 'get more air into the engine' as the throttle now has a 56mm butterfly on, on bothe the 8v and 16v throttle body

12th February 2010, 01:38

The engine will only suck the air it needs
yes you might have allowed it to run in slightly easier
but it actually does nothing for performance tbh
it's like 90% of induction kits out there it's a placebo effect
the only thing you may get if your lucky is a small amount of torque but the difference is minimal

and also as said the inlet manifold will still limit whatever air does go through the throttle body so makes it even more pointless tbh

the only real inlet mod you can do for a proper gain IMO is throttle bodies
I'll be running all standard apart from a decent filter untill bodies come along

12th February 2010, 02:03

all the people i know who have had it done give it good press so i figured id do mine.and as for the engine only taking as much air as it needs why would you put throttle bodies on if the standard one is sufficient? the plenum does effect the rate of air flow,its specific shape aids the amount of air that enters your engine.i understand how this works and also understand making more air ready available with less turbulence can only aid the intake process

12th February 2010, 02:09

good job mate, but as above no one will see it

12th February 2010, 02:19

thats a good point, thats one thing i cant get my head round, forged pistons are always so god damn sexy

12th February 2010, 09:16

looks very nice good job..

12th February 2010, 09:38

Quote:

Originally Posted by shayne_vtr

all the people i know who have had it done give it good press so i figured id do mine.and as for the engine only taking as much air as it needs why would you put throttle bodies on if the standard one is sufficient? the plenum does effect the rate of air flow,its specific shape aids the amount of air that enters your engine.i understand how this works and also understand making more air ready available with less turbulence can only aid the intake process

Go put bodies on a standard engine and see what happens the valves ect are only open so long to let air in
higher camshafts valves open longer (due to duration) and more air/fuel in there so bodies become a more worthwile investment
you won't get any actual gains in power just in response and torque
as said in my reply it might do a tiny bit but tbh it won't be noticable
and whee do I say standard inlet isn't sufficient
I simply said it's still standard so even though the bodie might be "bigger" the inlet still isn't so won't allow any more air in
best way I can think to describe it is a bottle neck the air is the fluid the inlet the neck and the tb is the widest part of the bottle if you understand that

15th February 2010, 03:46

Quote:

Originally Posted by Saaamon

But your not getting anymore air in to the engine. Remember, the inside of the inlet manifold will also have a rough surface to it.

if the inlet manifold is polished to a mirror finish like the throttle your engine would constantly miss-fire as you need the rough texture to cause turbulence to re-collect the deposited fuel on the intake runners and cylinder head.

15th February 2010, 08:43

At the end of the day it has been proved over and over on this site that this does nothing. people may think it helps throttle response but its such a small difference it is not noticeable at all. It is simply something people put on there spec list becuase they have no real parts on it.

1st March 2010, 10:31

Quote:

Originally Posted by AlexB

The engine will only suck the air it needs
yes you might have allowed it to run in slightly easier
but it actually does nothing for performance tbh
it's like 90% of induction kits out there it's a placebo effect
the only thing you may get if your lucky is a small amount of torque but the difference is minimal

and also as said the inlet manifold will still limit whatever air does go through the throttle body so makes it even more pointless tbh

the only real inlet mod you can do for a proper gain IMO is throttle bodies
I'll be running all standard apart from a decent filter untill bodies come along

so what your saying then my throttle body is 35mm stock and now it is 44mm and taper ported to 50mm and this as you say does nothing,
have you tried a bigger throttle body?

1st March 2010, 10:33

Quote:

Originally Posted by shayne_vtr

ninth photo down should of taper ported this part along with inlet manifold where throttle body bolts to

1st March 2010, 10:35

Quote:

Originally Posted by fdrightup

ninth photo down should of taper ported this part of the throttle body along with inlet manifold where throttle body bolts to

even the front of your throttle body still need some more ally removing

1st March 2010, 10:37

rear view of same throttle body so how it is taper ported

1st March 2010, 10:41

though you/me ported and polished cylinder heads not polish throttle bodys

1st March 2010, 11:15

Quote:

Originally Posted by shayne_vtr

all the people i know who have had it done give it good press so i figured id do mine.and as for the engine only taking as much air as it needs why would you put throttle bodies on if the standard one is sufficient? the plenum does effect the rate of air flow,its specific shape aids the amount of air that enters your engine.i understand how this works and also understand making more air ready available with less turbulence can only aid the intake process

multiple throttlebodies allow an accurate air fuel ratio for individual cylinders so you can get a lot more torque and bhp in the midrange.

A larger throttlebody will only help if it is truly a restriction to maximum flow. You would see a gain right at the top end but low and mid range will not be as good fuel air mix due to the slower air speed

kev

1st March 2010, 12:11

Quote:

Originally Posted by KamRacing

multiple throttlebodies allow an accurate air fuel ratio for individual cylinders so you can get a lot more torque and bhp in the midrange.

A larger throttlebody will only help if it is truly a restriction to maximum flow. You would see a gain right at the top end but low and mid range will not be as good fuel air mix due to the slower air speed

kev

this is why you/me finish the intake runners/throttle body,inlet ports in 80 grit to aid swirl and tumble into cylinder i run a bigger throttle body but my bottom end and midrange and top end are not a problem this is why i did not remove the resonator,
the resonator is a boost bottle

1st March 2010, 12:33

well I await any rolling road tests to prove they work

. We did offer to test one but it was declined. Its a cheap mod if they do but gains will be minimal due to it not really dealing with the limitations of a standard inlet system.

Kev

1st March 2010, 12:46

Quote:

Originally Posted by KamRacing

well I await any rolling road tests to prove they work

. We did offer to test one but it was declined. Its a cheap mod if they do but gains will be minimal due to it not really dealing with the limitations of a standard inlet system.

Kev

I will be really really really interested in the results of that! Maybe shayne can sort you out with one?

1st March 2010, 13:26

Quote:

Originally Posted by KamRacing

well I await any rolling road tests to prove they work

. We did offer to test one but it was declined. Its a cheap mod if they do but gains will be minimal due to it not really dealing with the limitations of a standard inlet system.

Kev

say what your are saying that every little mod needs putting on the dyno but the dyno is not real world conditions(wind pressure going over car on the road,
going up and down the hills when driving on the road, also the car on the dyno just sits there and the wheels spin the rollers but when car is on the road the engine has to pull the weight of the vehicle and over come rolling resistance of the tarmac which is not really smooth plus a few more as well)

1st March 2010, 13:28

Quote:

Originally Posted by KamRacing

well I await any rolling road tests to prove they work

. We did offer to test one but it was declined. Its a cheap mod if they do but gains will be minimal due to it not really dealing with the limitations of a standard inlet system.

Kev

why dont you run standard airbox or is a cone noise filter?

1st March 2010, 13:29

Quote:

Originally Posted by fdrightup

rear view of same throttle body so how it is taper ported

this throttle body was on a civic 1600 16 valve motor and yup it made a difference

1st March 2010, 13:35

Quote:

Originally Posted by fdrightup

say what your are saying that every little mod needs putting on the dyno but the dyno is not real world conditions(wind pressure going over car on the road,
going up and down the hills when driving on the road, also the car on the dyno just sits there and the wheels spin the rollers but when car is on the road the engine has to pull the weight of the vehicle and over come rolling resistance of the tarmac which is not really smooth plus a few more as well)

so you are also saying that dyno and 2 litre engines are king?

1st March 2010, 18:33

Quote:

Originally Posted by fdrightup

say what your are saying that every little mod needs putting on the dyno but the dyno is not real world conditions(wind pressure going over car on the road,
going up and down the hills when driving on the road, also the car on the dyno just sits there and the wheels spin the rollers but when car is on the road the engine has to pull the weight of the vehicle and over come rolling resistance of the tarmac which is not really smooth plus a few more as well)

Dyno's put load on the wheels to simulate normal driving conditions.

1st March 2010, 18:39

Quote:

Originally Posted by shayne_vtr

if the inlet manifold is polished to a mirror finish like the throttle your engine would constantly miss-fire as you need the rough texture to cause turbulence to re-collect the deposited fuel on the intake runners and cylinder head.

Why would it constantly stall? The injectors spary fuel in to the ports as the air is sucked in, the rough surface of the ports creates the turbulence which mixes the the oxygen and fuel together, not the inlet manifold.

1st March 2010, 20:50

Quote:

Originally Posted by fdrightup

say what your are saying that every little mod needs putting on the dyno but the dyno is not real world conditions(wind pressure going over car on the road,
going up and down the hills when driving on the road, also the car on the dyno just sits there and the wheels spin the rollers but when car is on the road the engine has to pull the weight of the vehicle and over come rolling resistance of the tarmac which is not really smooth plus a few more as well)

If it makes a difference as it's claimed to do, then even on a RR the difference would be noticeable, it should affect the bhp/torque figures, and how the power is mapped on the graph.

It's not suspension/tyres, so why does the rolling resistance matter? Standard vs modified should make a difference to the power/torque, which is what a RR measures...

3rd March 2010, 13:18

Quote:

Originally Posted by titchster

If it makes a difference as it's claimed to do, then even on a RR the difference would be noticeable, it should affect the bhp/torque figures, and how the power is mapped on the graph.

It's not suspension/tyres, so why does the rolling resistance matter? Standard vs modified should make a difference to the power/torque, which is what a RR measures...

when car is on the the road there is a rolling resistance eg tyres on the tarmac and the air pressure going over and hitting the front of the car ever put your hand/head out of the window at 80/100 psi

3rd March 2010, 18:47

Right?

Have you ever stood infront of (or attempted to) a fan in a dyno booth? That blows just as hard, if not harder. And it's aimed at the inlet.

And rolling resistance? What fuckign difference is that going to make with a ported/polished throttle body fitted? Is the throttle body going to roll across the dyno smoother?

Either way, if it made ANY difference to power/power delivery, it'd show up on a RR. It doesn't, or if it does it's minimal.

So stop chatting shit.

3rd March 2010, 18:58

Quote:

Originally Posted by fdrightup

ever put your hand/head out of the window at 80/100 psi

How can you claim to know so much about engine tuning when you can't even write a sentence without making basic errors.

17th February 2015, 12:36

how to disassemble this piece?