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Discussion Starter · #1 ·
Here is comparison between 2.0 TFSI crankshaft 06A 105 021 AR and 1.8 T crankshaft 06A 105 021. Both crankshafts are from transverse engines.
How to know which one is which - 2.0 TFSI is new, 1.8 T is used.
Both cranks are from Europe.
History - there are three part numbers for 2.0TFSI crankshaft : first was 06A105021E, than was this number replaced with 06A105021S, and finaly was this number replaced with 06A105021AR.
Units are in milimeters.
Dejan provided both crankshafts, so thanks Dejan.
My findings are - that crankshafts are identical, only difference is tooth gear wheel for oil pump ! 2.0 TFSI has 21 tooths, 1.8 T has 19 tooths. Part number for 2.0 TFSI tooth gear wheel is 06B 105 209 and for 1.8T is 06A 105 209. Here in Europe we can buy 06A 105 209 tooth gear wheel for around 20 USD. Both cranks have the same diameter where this tooth gear is attached - so no problem at all for a swap. 2.0 TFSI crankshaft is alot stronger (on one photo a pointed out this difference) and it weights 1kg more that 1.8T crankshaft.
I can only speculate that first crankshaft for 2.0 FSI was 06A 105 021 E and in VW Tech documents there is a text that 2.0 TFSI crankshaft is reinforced over 2.0 FSI crank and I think that first 2.0 TFSI were using 06A 105 021 S crankshaft and maybe 06A 105 021 S is stronger than 06A 105 021 E. And I speculate that maybe 06A 105 021 S and 06A 105 021 AR are identicly reinforced.
http://www.mobisux.com/album/d...I.jpg

Here are all photos in album :
http://www.mobisux.com/album/s...tupin
Here are links to 1600x1200 resolution :
http://www.mobisux.com/album/d...1.JPG
http://www.mobisux.com/album/d...2.JPG
http://www.mobisux.com/album/d...3.JPG
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http://www.mobisux.com/album/d...3.JPG
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http://www.mobisux.com/album/d...6.JPG
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http://www.mobisux.com/album/d...1.JPG
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http://www.mobisux.com/album/d...4.JPG
http://www.mobisux.com/album/d...5.JPG
http://www.mobisux.com/album/d...6.JPG
http://www.mobisux.com/album/d...7.JPG
http://www.mobisux.com/album/d...8.JPG
http://www.mobisux.com/album/d...9.JPG
http://www.mobisux.com/album/d...0.JPG
http://www.mobisux.com/album/d...1.JPG
http://www.mobisux.com/album/d...2.JPG
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Re: 2.0 TFSI vs. 1.8T crankshaft (bobqzzi)

Wow great man. Like bob said this is great info.
EDIT: Did you buy the crank new? How much was it?


Modified by FrankiEBoneZ at 8:24 PM 10-29-2007
 

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Re: 2.0 TFSI vs. 1.8T crankshaft (O2VW1.8T)

hmmmmm, gotta see what I can dig up from warranty
 

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Discussion Starter · #7 ·
Re: 2.0 TFSI vs. 1.8T crankshaft (FrankiEBoneZ)

I will buy it in near future and put it in 1.8T crankcase. I allready have wiseco pistons from Dejan for 2.0 stroker so there is no way to go back now.
Dejan managed to persuade our local dealer and dealer orderd this crank and he will return it back to central store (dealer can return new parts here and pay just a small amount of money).
In Slovenia price is around 900 USD, but I can get it from Germany because Germany is close to us and there it costs around 650-700 USD.


Modified by Blue GTI at 2:53 AM 10-30-2007
 

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Discussion Starter · #8 ·
Re: 2.0 TFSI vs. 1.8T crankshaft (Blue GTI)

I see that some numbers are to bright to see, so on photo number :
15 there is 13.09mm
16 there is 10.19mm
27 there is 12.8mm
37 and 38 there is 13,0mm
39 and 40 there is 16,5mm
48 there is 7 mm



Modified by Blue GTI at 2:59 AM 10-30-2007
 

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so your saying as long as we get the belt for the 2.0 oil pump gear wheel then we are fine? Dumb question but would that change anything when using a 1.8T oil pump?
 

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Re: (AudiA4_18T)

So from what I'm getting, it is of identicle composition to a 1.8T crank, but obviously has more stroke. The AEG crank is also debatably the same composition as a 1.8T crank but has the same oil pump gear. What is the advantage of the 2.0TFSI crank?
 

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Discussion Starter · #11 ·
Re: (AudiA4_18T)

You just need to use pistons for 2.0 and on 2.0TFSI crank you need to use 06A 105 209 tooth gear for oil pump.
2.0TFSI crank is much stronger than 1.8T or 2.0 AEG.
 

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Re: (WhiteG60)

Quote, originally posted by WhiteG60 »
So from what I'm getting, it is of identicle composition to a 1.8T crank, but obviously has more stroke. The AEG crank is also debatably the same composition as a 1.8T crank but has the same oil pump gear. What is the advantage of the 2.0TFSI crank?

AEG crank is cast, FSI crank is forged (as is the 1.8T crank)
 

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Re: (bobqzzi)

Quote, originally posted by bobqzzi »

AEG crank is cast, FSI crank is forged (as is the 1.8T crank)

But has anyone broken a AEG crank?
 

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Re: (bobqzzi)

Quote, originally posted by bobqzzi »

AEG crank is cast, FSI crank is forged (as is the 1.8T crank)

Are you 10000% positive? I see the same marks on my 1.8T crank that I see on my AEG crank.
 

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Re: (WhiteG60)

Quote, originally posted by WhiteG60 »

Are you 10000% positive? I see the same marks on my 1.8T crank that I see on my AEG crank.

It is not possible to be greater than 100% positive. Which I am.
 

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Re: (bobqzzi)

Quote, originally posted by bobqzzi »

It is not possible to be greater than 100% positive. Which I am.

I got a 108% on a science exam once. And I'm just checking because people still argue over wether things are forged or not.
 

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Re: (cincyTT)

again
Quote, originally posted by cincyTT »

But has anyone broken a AEG crank?

if not, wouldnt being forged not all that important?
 

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Re: (cincyTT)

Quote, originally posted by cincyTT »
again
if not, wouldnt being forged not all that important?

No one has yet broken an AEG crank that anyone knows of.
 

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Re: (WhiteG60)

Quote, originally posted by WhiteG60 »

No one has yet broken an AEG crank that anyone knows of.

thats what i thought. But that would negate the point in spending the x3 the cost for a new 2.0T then a used AEG crank. Unless im missing something major here.
 
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