Flywheel weight

[ThatGUY]

I have read a lot about Flywheels but I never hear about too light. Is a 9lb flywheel too light for a 20VT?

Andrew

[Tommy200rs]

it depends for what kind of use. For a 700hp racer with high idle, about 5 to 6kg might be ok.

7 to 8 kg flywheelie is good for street with stock idle with 3b, aan, aby. with adu not ok. adu idle needs to be raised about 200-100 rpm.

[Billman]

Does the Audi 200 3B Flywheel Fits an Rs2 without the spacer? What else must there be done? Does it needs balancing? Are 200 3B and S2 3B flywheels the same?

[AnLe]

Does the Audi 200 3B Flywheel Fits an Rs2 without the spacer? What else must there be done? Does it needs balancing? Are 200 3B and S2 3B flywheels the same?

s2-3b fits rs2, 200-3b does not, becouse it has big hole where crank bearing goes.

[Billman]

Can i ask something else! Are the NG and 7A flywheels the same like the S2 3B one? I have read that pisobiker has use an 7A one on his project!

The part numbers are:

034 105 270 E - NG
034 105 270 K - NM, 7A
034 105 270 AA - S2-3B

[~Delta]

You can use the 7A flywheel on the 3B - it is heavier, but then it's to be expected, as low spped torque is not the 7A's best point. NG item is no good, as it doesn't have the timing pin for TDC at the back.