Hi I need all your expert help with flywheels

[BenC30]

Hi im all new and i need some help identifying some flywheels this is the first one,

Can somone tell me what flywheel this is please


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[BenC30]

And this one, i need to know what engine code it is for? (if its recognisable)



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this is dual mass if it helps!

Right i now know this is an ABY flywheel!!! thanks guys

[willg54]

will the second one be from a 3b engine as its 5speed? aby would be 6 speed ?

[BenC30]

and this, i beleieve is a 3b flywheel



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[BenC30]

SO what vehicles use the 3b 5 speed?

and what used a 3b 6 speed?

[willg54]

3b 5speed - early S2 coupes and avants? not sure if the 3b ever had 6speed (maybe mistaken) as i think the 6 speed was introduced with the revised ABY engine in 1993/4?.

[willg54]

part numbers for you taken from ETKA

3b flywheel - 034 105 270 AA
ABY flywheel - 034 105 266 E

[BenC30]

thanks, but what car is the ABY flywheel used in?

[willg54]

ABY (thats the engine code) is the later (post 1993/94) Audi S2 Coupe and Avant. not sure about other applications.

What engine are you looking for a fly wheel for??

[BenC30]

so the 3b was pre 93 5 speed, ABY was 93-96 with 6 speed, and the ADU is the RS2 6 speed is that right?

[willg54]

not sure of the 3b - ABY change over but it was about 93-94. As for the RS2 engine code im not sure of. probably right there.

[willg54]

but yes,
3b = 5 speed
ABY = 6 speed

[BenC30]

so, is the 3b flywheel the same as the ABY flywheel?

[willg54]

dont think so. they have different part numbers

[Rusty]

No, they're completely different. Have a search for 'single mass' or 'dual mass' flywheel

3B is lighter and is solid metal
7A is slightly heavier and is very similar to 3B
ABY / ADU is dual mass so has various springs and parts to it, this is smoother but is heavier and can wear out.

First pic looks like 3B/7A, second pic, I'm not sure about, could be dual mass...

What car are you fitting this to? If you're fitting to a 6 speed car then there's some mods that need to be made. There's a sticky in the transmission section on this.

Clutch is not compatible ABY/ADU to 7A/3B. Stock ABY clutch can take more torque than stock 3B...

It's all here if you have a look about

HTH