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Thread: 1.8t new internals.

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    1.8t new internals.

    hello people

    I have a 8l S3 with:

    Hybrid turbo (tfsi turbine and mfs compressor)
    3" downpipe and exhaust
    Badger5 exhaust manifold (requested iam waiting delivery)
    Bigger Injectors
    Big IC.

    Now i need some help because i have a AEB Head and 1.8t Block.

    i have doubts, i dont know what to fit in the block and the AEB head.

    I will fit 2.0tdi crankshat and 86.4mm pistons.
    Can someone tell me the best and lighter conrods and piston.

    About the head i want 8000rpm.
    what parts i need to achive this values

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  3. #2
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    Bruto
    Talking about the 800hp by 0-400 S3 : "Is it true that everytime you take this car down the strip, the earths rotation slows by 0.1 % ??"

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    Pistons will not fit

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    Quote Originally Posted by Broken Byzan View Post
    Pistons will not fit
    yes it fit, but we have to work bore

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    Not a chance. 83.5 is max on 1.8t block

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    Quote Originally Posted by Miguel_S# View Post
    yes it fit, but we have to work bore
    I think you are a little confused my friend...

    86.4mm is the stroke of the std 1.8 crank... TFSI stroker cranks are 92.8mm stroke

    1.8t blocks can be bored to a MAX of 83.5mm but no one really goes over 83mm as its not reliable and largely pointless...

    To convert your 1.8 20v to a 2ltr you will need a TFSI crank from a petrol engine (not a TDi like you posted unless this is a typo) and 83mm bore stroker pistons... JE or CP pistons are the normal ones to choose from and 9.25:1 to 9.5:1 compression ratio depending on manufaturer

    As for 8000rpm capable head... you may want to consider an 8000rpm capable turbo first... you will also need cams to get it breathing enough too

    Valvetrain wise you would need a full supertech setup so single groove inconel exhaust valves, single groove nitrided inlets and valve spring set..

    Std cams and a K04 hybrid will struggle take make power beyond 7k rpm...

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    I want 8000rpm to improve top speed.
    i was hopping i only need valve guide to achive rpm....

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    very good info about pistons
    VWVortex.com - FAQ - 1.8t Pistons

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    Quote Originally Posted by Miguel_S# View Post
    I want 8000rpm to improve top speed.
    i was hopping i only need valve guide to achive rpm....
    If you want to get to 175ish mph in 6th gear (7,000+ plus) you will need a turbo that can produce enough power to turn those gears fast enough.
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    Quote Originally Posted by Miguel_S# View Post
    very good info about pistons
    VWVortex.com - FAQ - 1.8t Pistons
    STROKE, not bore

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    Quote Originally Posted by Vex182 View Post
    If you want to get to 175ish mph in 6th gear (7,000+ plus) you will need a turbo that can produce enough power to turn those gears fast enough.
    I hope i can get 350hp at 8000 with This turbo

  13. #12
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    350bhp @ 8k?

    I dont think so.
    peak power will be at lower rpm

    Full uprated valvetrain for those revs.. and a nice balanced bottom end also

    TDi crank...?

    Hmmm
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    Quote Originally Posted by badger5 View Post
    350bhp @ 8k?

    I dont think so.
    peak power will be at lower rpm

    Full uprated valvetrain for those revs.. and a nice balanced bottom end also

    TDi crank...?

    Hmmm
    TDI crankshaft Part # 038 105 021 E or equivalent
    IE 06A 1.8T 20V 2.1L 2067CC Stroker Engine Kit (8.5:1 CR)

    dyno 345hp.jpg

    i hope my engine will have those values more 500rpm

  15. #14
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    you will have more torque, sooner, but as for peak power being achieved that high I suspect not.
    it will have diesel torque with some more revs to play with I think
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    So with a stroke i only win torque?

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    The TDi crank messes with the rod angles too much as the 20v block is shorter than the 1.9tdi block... I have reason to believe that the TDi cranks don't make very high revving engines and your 8k limit may not be achievable

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    Quote Originally Posted by <tuffty/> View Post
    The TDi crank messes with the rod angles too much as the 20v block is shorter than the 1.9tdi block... I have reason to believe that the TDi cranks don't make very high revving engines and your 8k limit may not be achievable

    <tuffty/>
    its 2.0 tdi, IE used in thid stroke kit
    IE 06A 1.8T 20V 2.1L 2067CC Stroker Engine Kit (8.5:1 CR)

  19. #18
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    That part code is for the 1.9TDi crank... the 2ltr TDi is a larger bore is all... 1.9Tdi is 79.5mm bore by 95.5mm stroke... 2ltr TDi is 81mm bore by 95.5mm stroke

    As I said... the extra stroke of the TDi crank messes with the rod angles which means the engine won't rev as high as using stock stroke or the TFSI crank...

    Andrew@ALD has done this build though...

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    Quote Originally Posted by <tuffty/> View Post
    That part code is for the 1.9TDi crank... the 2ltr TDi is a larger bore is all... 1.9Tdi is 79.5mm bore by 95.5mm stroke... 2ltr TDi is 81mm bore by 95.5mm stroke

    As I said... the extra stroke of the TDi crank messes with the rod angles which means the engine won't rev as high as using stock stroke or the TFSI crank...

    Andrew@ALD has done this build though...

    <tuffty/>
    Thanks for sharing knowledge and experience.
    For my goals what do you recommend?

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    Stock crank, 83mm pistons. ALL the headwork, IE intake cam.

    if you insist on revving and having ANY chance of making power past 7.5k

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    revvy... is to pump more airflow thru a small engine on larger turbo (aka badgerwagen)
    you should spec total flow output from the turbo to your motor.

    Why the 8k rpm - ?? whats so special about the rpm? (top speed vmax run or something?)
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    Quote Originally Posted by badger5 View Post
    revvy... is to pump more airflow thru a small engine on larger turbo (aka badgerwagen)
    you should spec total flow output from the turbo to your motor.

    Why the 8k rpm - ?? whats so special about the rpm? (top speed vmax run or something?)
    I want the top speed is 300km/h
    How I spec total flow output from the turbo to motor?
    The compressor is a mfs tfsi 7+7

  25. #24
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    want top speed choose suitable gearing if this is your turbo choice.

    8krpm is spinning fast for 95.5mm stroker crank on 1.8t block
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    Quote Originally Posted by Miguel_S# View Post
    I want the top speed is 300km/h
    How I spec total flow output from the turbo to motor?
    The compressor is a mfs tfsi 7+7
    186mph from a K04-023 hybrid....

    Is that even do able?
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    Thanks for the information
    i will keep ori crankshaft
    But Badger you have car mapped with 345hp at 7600rpm with no large head, its so hard to have more 400rpm?

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    Quote Originally Posted by Miguel_S# View Post
    Thanks for the information
    i will keep ori crankshaft
    But Badger you have car mapped with 345hp at 7600rpm with no large head, its so hard to have more 400rpm?
    youre missing the point and misreading the dyno chart completely.



    where does it make peak power?

    it does not make any more power after 7k or so. At 8k it will nose dive faster than id muff dive on Amber Heard. Ie, pointless

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    To add, torque dies at 6k, power at 6.5k. It is out of its efficiency range

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    Using the IE intake camshaft can he gain something? Or it's the turbo beeing the limitation???
    Talking about the 800hp by 0-400 S3 : "Is it true that everytime you take this car down the strip, the earths rotation slows by 0.1 % ??"

  31. #30
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    Quote Originally Posted by Miguel_S# View Post
    Thanks for the information
    i will keep ori crankshaft
    But Badger you have car mapped with 345hp at 7600rpm with no large head, its so hard to have more 400rpm?
    you need to read the dyno plot better miguel
    peak power not @ those revs my friend
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  32. #31
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    Quote Originally Posted by Pedrosousa View Post
    Using the IE intake camshaft can he gain something? Or it's the turbo beeing the limitation???
    Nothing to gain from cam on this small frame turbo. Spend the money buying a bigger turbo instead

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    So the big problem in 8000rpm is turbo abilitie to flow the exhaust and exhaust temp????

  34. #33
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    Quote Originally Posted by Miguel_S# View Post
    So the big problem in 8000rpm is turbo abilitie to flow the exhaust and exhaust temp????
    no, the ability to flow significant airflow above those rpms (turbo shaft speed). If you had a compressor map and overlaid rpm for your displacement you would see that at X rpm the turbo would be out of its efficiency range and hence be making no more power.

  35. #34
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    want top speed fit a diesel gbox..

    had a lc180 in last week, diesel box, owner was'nt aware it was, 5th gear 3krpm was 95mph.
    long legged mofo.
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  36. #35
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    Thanks people.
    Now I understant, too keep power at high rpm it needs a big compressor wheel.


    Coating piston what do you think about this???

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    Quote Originally Posted by badger5 View Post
    want top speed fit a diesel gbox..

    had a lc180 in last week, diesel box, owner was'nt aware it was, 5th gear 3krpm was 95mph.
    long legged mofo.
    Thanks but with this gearbox the car will be more slow and i dont want that

  38. #37
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    Quote Originally Posted by [Dave B] View Post
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  40. #39
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    I was searching and found ARROWS conrods, but they are very expensive.
    Titanium connecting rods - Arrow Precision
    30% WeigHt saving
    Titanium grade 6AL-4V
    CrN coated

    Did the weight saving makes difference our is a waste of money?

  41. #40
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    Quote Originally Posted by Miguel_S# View Post
    I was searching and found ARROWS conrods, but they are very expensive.
    Titanium connecting rods - Arrow Precision
    30% WeigHt saving
    Titanium grade 6AL-4V
    CrN coated

    Did the weight saving makes difference our is a waste of money?
    On a road car with a K04 yeah..

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