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Throttle Bodys


Robin H
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I was browsing the net last night and come across this picture of trd throttle body's (in link below) now this is something that I would like to knowing more about, this is where I hope that you can help, I don't know much about engines and most of what I know is from this forum. see pics of parts in posted by members and topics like the drift car.

there's lots of talk about turbo's and superchargers but none really on throttle body's. I know that the first 2 are good ways of getting big power gains for your money

could this be a reason that throttle body's are not cost effective for the money when you put the against turbos and superchargers, so could this be why it's not done much?

out of interest what do the touring cars have in them?

one of the main reasons why I've asked these questions is because it's something that I'm interested in doing to my altezza but don't fully understand how it all works

I love the sound the intake makes when I put my foot down, I still smile as much as the first time I did it :wub: this is a sound I DON'T want to lose on the hunt for power. so this is why I thought TB's would be a good way to go, am i right?

at the end of the the day I'm aiming for a 250hp n/a 3s-ge, any idea of what Rwhp could be ? and what the cost's could be getting there?

thanks for your time and any questions that you could answer would be greatly appreciated

Robin

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throttle bodys if set up right can give good hp gains, however bang for buck you will get more with FI

i was looking at throttles before the turbo conversion, and i actually have alot of infomation about them.

there are quite a few companies that have throttle body conversions for the 3s-ge. in japan

i think i could succesfully make up a kit using home grown products at half the price

ive even got the basics of a design i did for 6 throttle bodys on the 1g-fe for the is200

Edited by Monster-Mat
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You can reach more than 250hp going with N/A tuning. it will be far from cheap... something like 850,000JPY for N1 Racing parts...

Here's a pic of a throttle body conversion with a carbon fibre plenum.

It will be far from quiet :P

post-4401-1134739188.jpg

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I don't think you'd need that much to get to 250 mate...........

My IS3 is currently pushing 185 RWBHP and that's about 245 BHP at the FLY.

Near enough what you want right ?

What's my car had done to it ?

HKS HI-Power Silent (back box)

K&N Typhoon Induction.

(Below work carried out by TDi)

Pre Cats Removed.

Main Manifold Inlets bored.

Balancing Pipe added.

Have you tried going for a full stainless steel exhaust system? From manifold straight to the back , removing all cats?

I'm sure you will see a nice gain there !

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currently collecting parts for it at the moment (hope to get them fitted once back from snowboarding in jan)also should have some more by then

got manifold to put on

will I not lose back pressure by removing all the cats? do I need back pressure?

I know that this ideal for turbo's

will I lose any torque by removing cats?

I'm surprised that you've gain over 30hp from the mods listed below

but you do have 2 more cylinders then me

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Robin, I didn't gain 30BHP.

Are you comparing that gain from the rolling road dyno @ Janspeed? Then that's not an accurate figure.

My dyno @ TDi before mods, on the DYNO (rototest) was 172 RWBHP.

After those mods, I then got to 185 RWBHP.

so it was a 13BHP increase.

Back pressures ............ pah - no good asking me mate !

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ahmet you cant compare your engine to the 3s-ge. for many reasons.

why is the engine highly stressed....the engine is highly stressed from the factory, its a high compression engine, by addingg modifications which increase the HP, you are automatically increasing the stress.

the 2jz-ge, is not a stressed engine

yes you require backpressure, again this is the relm of actually speaking to people who know what there talking ablout, rather than listening to the internet Tuners.

if you buy a matched exhaust, lets say the TRD manifold, down pipe and remainder of the system, matched to decent throttle bodys you will get a decent gain, if you hobble together bits and bobs that are not matched you wont gain nearly as much.

you need to do research and calculate what you hope to achive and what you will achive

it goes alot further than just whacking an an exhaust, and throttles.

you need to look at cams equally as much.......

Edited by Monster-Mat
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imo, get urself a turbo kit..

got a mate selling a apexi turbo kit for about £1k (used with fmic)

some guys down under are running these upto .7bar on stock internals producing tad under 290hp...

u'll need a ecu and mapping...

2.5k-3k is more than enough for a turbo kit though..

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thanks for your input peeps

I didn't think it would be the case of just bolting on TB's

there always a knock on effect to what else you have to do

a few more minutes of your time if that's ok

what are my options for getting small power gains from my 3s-ge?

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it's not really how much I want to spend but more of what can I do,(staying n/a)

I don't have a lump sum to do it with, it would just be the case of doing the over time to pay for any mods,

of top of my head lets say £1000 every 3 months to mod with

as this is what I've spent on the 1st round of mods

(the money pit has started :lol: )

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it's not really how much I want to spend but more of what can I do,(staying n/a)

I don't have a lump sum to do it with, it would just be the case of doing the over time to pay for any mods,

of top of my head lets say £1000 every 3 months to mod with

as this is what I've spent on the 1st round of mods

(the money pit has started :lol: )

Robin can you let me know what you have done engine wise inclusding exhaust uptill now.........

then.......

i will spend a grand for you for the next 12 months :D

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haha :lol:

HKS induction kit

Tom's 4-2-1 manifold (not fitted yet)

HKS sports cat (not fitted yet also this will be used as template for decat pipe if required)

speed racing cat back exhaust (what was on car)

TRD flywheel (not fitted yet)

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haha :lol:

HKS induction kit

Tom's 4-2-1 manifold (not fitted yet)

HKS sports cat (not fitted yet also this will be used as template for decat pipe if required)

speed racing cat back exhaust (what was on car)

TRD flywheel (not fitted yet)

ok cool here goes..............

firstly

TRD cams and vernier pulleys both obtainable from TRD (i have contacts)

sell the toms manifold.......

next 2 months get the full TRD race 4-1 manifold e_3SGE_11.jpg

sell cat and cat back exhaust..........

manifold back TRD group N exhaust system, as shown above

then you have a plethera of choice regarding Throttle body conversions.

Nightpager

Axia sports

TODA...still in development

and of course TRD

altezza-4slot.jpg

there are the other little bits and bobs that need doing like plugs, injectors

i have pretty much direct access to TRD Japan parts

if you need more detail on this stuff let me know....that should get you 270 hp @8,000 rpm or 245Nm torque....so you need to do brakes and diff aswell :D

Edited by Monster-Mat
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then you have a plethera of choice regarding Throttle body conversions.

Nightpager

Axia sports

TODA...still in development

and of course TRD

LOL - I did a quick search for Nightpager and look at what I hit: Nightpager, I'm picking this is not a mod that you're recommending! ;)

For those who are interested, here's some 'real' Night-Pager links:

http://night-pager.com/

http://night-pager.com/parts/toyota_sports/sxe10/sxe10.htm

DCP02051.jpg

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haha :lol:

HKS induction kit

Tom's 4-2-1 manifold (not fitted yet)

HKS sports cat (not fitted yet also this will be used as template for decat pipe if required)

speed racing cat back exhaust (what was on car)

TRD flywheel (not fitted yet)

Think you have the TOMs downpipe too...

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Thanks very much with your help on this topic Mat

I've been looking at the TRD parts that you've mentioned (cams,pulleys, exhaust system)

what is the conversion rate to work out what they would cost in £ of the parts would be

Cam and pulleys look like the first things to be done then

would this also mean a new/piggy back ecu would be required to run the new set up

TDI posted up that they had a Cam kit for the tezza

link to post

would this be an option or should I not mix and match parts

also with a fully decated system would the car pass the m.o.t's

how do the turbo boys get on with there m.o.t's

thanks for your help so far peeps

I'm sure that i'll have a few more Q's in future

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you can mix and match, however by fitting the TRD stuff as a matched set you will have continuity

where are you getting the prices for your TRD parts?

regarding the cat, if you have a cat, it can be fitted into the pipe from TRD, just would need welding im

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will be a difference between wheel and hub measurement readings

would be a truer figure if it was done before and after using the same tester

what was done ?

and mr scarfacethispostisuselesswithoutpics , where are the pics

The picture is on the thread mate ..................

We were not able to do a test before hand ............

The exhaust manifold section was cleaned out (inlet pipes made bigger)

Precats Removed

Balancing Pipe was added to manifold

Smile was added to face :D

Robin, I didn't gain 30BHP.

Are you comparing that gain from the rolling road dyno @ Janspeed? Then that's not an accurate figure.

My dyno @ TDi before mods, on the DYNO (rototest) was 172 RWBHP.

After those mods, I then got to 185 RWBHP.

so it was a 13BHP increase.

Back pressures ............ pah - no good asking me mate !

:huh:

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