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Thread: R32 throttle body advice on my 1.8t please

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    R32 throttle body advice on my 1.8t please

    Hi there ive just got my self a R32 throttle body for my S3 but ive bought a mk5 R32 throttle body not mk4 has any one fitted these? the difference i have seen though is theres no vacume port on the throttle body like there is on my 1.8t one but i was going to put a port in the adaptor so thats not an issue. basicly just want to know if any one knows if its the same size/layout as the mk4 R32 throttle body and where can i get an adapter from?

    Thanks for your help in advance Nick

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    Think their the same mate, just unplug your standard s3 tb and try the plug on the r32, if it matches up your fine.
    Driving the most secretive S3 on ASN

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    I'm sure the map will have to be adjusted and also there is not a ridge on the lip of it so it will pop off under pressure. Best bet is to look into Tuffy's thread as he fitted one some time ago and then removed it.
    Last edited by Vex182; 7th January 2013 at 21:44.
    Silver 2002 Audi S3 225 (BAM) since March 2011.

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    Currently: 254bhp - 276lb/ft (174bhp/ton) as of 11/02/2013 On V-Power

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    Bill @ Badger 5 sells adaptor plates for R32 to 1.8t manifolds...

    Have a read from here...
    My minor modding thread

    <tuffty/>
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

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    Tuffty that's perfect just what I wanted and I was also thinking of get a spare small port manifold and doing what you've done as I'm running a big port head thanks for everyone's feed back I will get in contact with bill see how much an adaptor is thanks again

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    Quote Originally Posted by Vex182 View Post
    I'm sure the map will have to be adjusted and also there is not a ridge on the lip of it so it will pop off under pressure. Best bet is to look into Tuffya thread as he fitted one some time ago and then removed it.
    Yes map adjustments is recommended

    Mine doesn't have a lip and have run 30 psi, I use a 83mm hose and i think Tuffty used a 85mm. I just used the old hair spray trick and its been fine.

    What spec it the engine? Not really worth it on the standard S3 inlet manifold.
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
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    Im running a v6 tb on my unmapped s3 and its fine, i had the plenum port matched to the same size as the v6 tb and had a adaptor plate mare to fix it, i also gasket matched the runners at the same time, although ill be ditching the inlet manifold for a largeport one soon.
    Driving the most secretive S3 on ASN

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    My engine is fully forged and rebored I'm running a gt2871r turbo with a tial tubular manifold I've got a big port head as well I'm going to get another inlet manifold and basically copy what tuffty has done

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    You mean copy what i've have done lol Tuffty copied me
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

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    Perhaps he means make it look OEM Anyhow you weren't the first were you? I saw it on VWVortex a while ago.

    VWVortex.com - Cast SEM-like Large Plenum / Velocity Stacks & AEB Runners for "homebrew" intake manifold. Opinions?
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    Quote Originally Posted by Andrew@A.L.D View Post
    You mean copy what i've have done lol Tuffty copied me
    Hummm.... I copy no one... I do get inspiration from others though

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    You guys that have done it, do you reeaaallly think it makes a difference?

    I mean, how big is your boost pipe work? Tuffty is yours 63mm?ish.
    I guess im thinking if the tb is the same size as the boost pipes then its cool, and the gains are in a larger plenum, rather than tb? Because the tb can be thought of as a continuation in the boost piping.
    Am i making sense? Its late.

    I guess if the tb is making a difference, thats also like saying increasing the boost pipe size will do the same. Right?

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    Remember the throttle plate and spindle will reduce the diameter to a degree.
    Handling mods++. GTX30 soon-ish. Hiding parts from the mrs since 2011. Build thread

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    Quote Originally Posted by superkarl View Post
    You guys that have done it, do you reeaaallly think it makes a difference?

    I mean, how big is your boost pipe work? Tuffty is yours 63mm?ish.
    I guess im thinking if the tb is the same size as the boost pipes then its cool, and the gains are in a larger plenum, rather than tb? Because the tb can be thought of as a continuation in the boost piping.
    Am i making sense? Its late.

    I guess if the tb is making a difference, thats also like saying increasing the boost pipe size will do the same. Right?
    Difficult to tell if it made a difference on mine... going to a larger inlet made more of a difference on my setup and thats still on a std 60mm TB... yes, I have 63mm pipework now (63mm OD) and arguably the throttle body is a 'restriction' now... which brings me onto....

    Quote Originally Posted by Sam_ View Post
    Remember the throttle plate and spindle will reduce the diameter to a degree.
    ...exactly Sam... the 60mm ID is all well and good but actual surface area is reduced by the plate and spindle...

    I am sure that a larger TB will be beneficial for top end power on my car but at the end of the day its still a 'daily' road car and the smaller TB will help drivability...

    Increasing the size of anything in the charge air system will reduce overall airspeed and effect low end drivability... this can be improved on in mapping (I run a lot of timing advance low down) but its always a balancing act... bigger isn't always better

    <tuffty/>
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    Ok guys, i have edited this thread. If you have a problem with that, feel free to pm me.
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    I have a larger TB on my large port inlet mani.

    A lip was welded on to mine to stop the worry of it popping off.

    I have posted something very similar to this already.

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    Quote Originally Posted by Reesy View Post
    I have a larger TB on my large port inlet mani.

    A lip was welded on to mine to stop the worry of it popping off.

    I have posted something very similar to this already.
    Ah yeah... I had forgotten about that... after having my hose pop off twice I did the same lol...


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    That TB looks familiar

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    TBH i would say that the T/B alone on a standard inlet doesn't give much if any gains.

    Add the T/B to a large port head and custom large port inlet then yes there are gains.

    We could do with a back to back dyno run to prove this..... Tuffty its time to do a bit of testing done
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

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    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
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    Quote Originally Posted by Andrew@A.L.D View Post
    ....We could do with a back to back dyno run to prove this..... Tuffty its time to do a bit of testing done
    It is on the cards... now that the car appears to be behaving itself I will be back on it again very soon

    <tuffty/>
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    have you still got the R32 TB waiting to go back on then PT?
    -------------------------------------------------------------------------------------------------

    Prawns TFSI Turbo'd 1.8T Track Car

    But I know nothing so ignore me.

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    Quote Originally Posted by Prawn View Post
    have you still got the R32 TB waiting to go back on then PT?
    Sadly not mate... need to source another....

    <tuffty/>
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

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    Westy likes this.
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

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    nothing ever came of promise tests 2 & 3 did they?
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    Quote Originally Posted by <tuffty/> View Post
    Sadly not mate... need to source another....

    <tuffty/>
    Do you want your old one back tuffty for testing? I'm not going to use it now till I get a custom large port mani anyway, Let me know and I will ship it back to you.

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    Quote Originally Posted by S3Zek View Post
    Do you want your old one back tuffty for testing? I'm not going to use it now till I get a custom large port mani anyway, Let me know and I will ship it back to you.
    I'll let you know mate... thanks for the offer

    <tuffty/>
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    Quote Originally Posted by <tuffty/> View Post
    I'll let you know mate... thanks for the offer

    <tuffty/>
    No probs

  29. #28
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    Quote Originally Posted by S3_nick View Post
    Hi there ive just got my self a R32 throttle body for my S3 but ive bought a mk5 R32 throttle body not mk4 has any one fitted these? the difference i have seen though is theres no vacume port on the throttle body like there is on my 1.8t one but i was going to put a port in the adaptor so thats not an issue. basicly just want to know if any one knows if its the same size/layout as the mk4 R32 throttle body and where can i get an adapter from?

    Thanks for your help in advance Nick
    MKIV & MKV R32 are the same throttle body. Only difference is some have the coolant ports as they throttle bodies sit over a hot exhaust manifold.
    An adapter plate to mate a MKV R32 throttle body w/75 x 75mm bolt pattern & 75mm throttle opening onto an OEM 1.8T intake manifold does not exist. The 75mm diameter cuts into the counterbored mounting holes on the adapter plate. Best bet is having a plate machined that tappers down to a 70mm , welding said plate onto your OEM manifold and then opening up the manifold to 70mm.

    HTH
    Issam

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    and yet it has been done as a test on std ported inlet and R32 throttle.. Go figure

    pointless mod btw on std plenum imho...
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    What gains could be seen on a large plenum bill?

  32. #31
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    1000hp

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    Quote Originally Posted by superkarl View Post
    1000hp
    you have been looking at my plenum havent you...

  34. #33
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    yes. i want!

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    depends on the power level..... higher power more gains. we saw >5000rpm 17bhp gains on tufftys at 300bhp level on his...
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  36. #35
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    I saw 19 bhp at 400 bhp with the inlet
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  37. #36
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    Will the cruise control work if some other TB is mounted? Just saw some saying (few years ago) at Wortex that it wont, but is really so?

  38. #37
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    Quote Originally Posted by BuuBBa View Post
    Will the cruise control work if some other TB is mounted? Just saw some saying (few years ago) at Wortex that it wont, but is really so?
    Mine worked fine

    <tuffty/>
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

 

 

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