GROUP BUY INTEREST - Fluidampr Harmonic Dampner

[kenax]

Considering my involvement with Fluidampr , I am going to have to decline involvement with ATI (nothing personal against ATI).

Ok, this clears it a bit

This would be almost impossible to get right. Speaking with JP@JNL about this in length and we would pretty much have to get the hub adapter spot on in the weight department in order for this to have a 0 negative effect with respect to the bolt on affair.

Obviously it will be very hard, if not impossible to get it precisely right, as they've drilled balancing holes in the OEM dampers as well. I have very precise 3D scan of the oem damper so I know pretty well where the offset center of mass is at. This can also be verified and inertia tested in a tester I have access to.

Just out of curiosity, if someone is ready to go the length to balance the crank to zero, can they not address the damper OD-related issues by growing the V-pulley on the alternator etc to suit the minimum needed OD for the damper? Or could the damper be moved towards the engine so that the V-pulley would be in front of the damper itself?

[Wizard-of-OD]

Hi Everyone,
I guess I should have been a little clearer in my first post. I made an assumption that most of you knew that this can only be used on an inline-5 motor if you have zero balanced the internals. When Audi built the 7A/AAN/3B/ADU/NM etc motors , they balanced the crankshaft accessory pulley with the complete rotating assembly hence why when most of you ran the 1.8T 551201 Fluidampr unit noticed an increase in engine vibrations and subsequently short term engine failure (fried bearings).

Having spoken with Fluidampr yesterday , I am afraid the v-belt system will not be doable. Everyone will have to convert to serpentine belt due to the smallest diameter v-belt OD overlaps the smallest ID the Fluidampr can be.

That being said , I will answer your questions below.

Are these best suited for high rpm use? I am interested but not building a revver motor. Any clearance issues or bolt in for UrS aan?

This is best suited for any of the inline-5 motors. Most if not all of your OEM rubber dampners are cracked and a replacement unit from Audi is insane money. There will be no clearance issues on an AAN as this is designed around the AAN 6PK serpentine OEM unit in mind.

I'd be interested for sure, but need to decide more about my v-belt vs. serp. on my AAT stroker.

You will need to convert to serpentine complete.

This is my version with fluidampr.
Works very good up to 8200upm

OEM AAN Pulley = 054 105 251 C = 4558g
FLUIDAMPR 551201 (1.8T) = 2758g
I assume you did not just bolt this on but rather did a full engine balance job. Whatever the case , that dampner is underweight for your motor.

I do need to point out the fact that at least AAN is externally balanced, which means that a part of the crank's balancing is done in the original damper, so you simply can not put a zero balanced damper in the system without balancing the crank to zero as well! Do take this into account when applying another damper to the engine. Even another OEM damper will alter the balance slightly, although that's not even close to what a zero balanced damper will do.

See above.
Once completed , the Fluidampr ring should not be balanced with the rotating assembly. If you want to balance a component with your rotating assembly then you will need to balance the hub adapter shown below:

Also, when you have a price for the Fluidampr setup, please let me know and I can ask for a quotation on the ATI system.

Considering my involvement with Fluidampr , I am going to have to decline involvement with ATI (nothing personal against ATI).

If there's enough interested, I can look into the external balancing possibilities so it could be mounted bolt-on into a stock setup.

This would be almost impossible to get right. Speaking with JP@JNL about this in length and we would pretty much have to get the hub adapter spot on in the weight department in order for this to have a 0 negative effect with respect to the bolt on affair.

[kenax]

Also, when you have a price for the Fluidampr setup, please let me know and I can ask for a quotation on the ATI system.

If there's enough interested, I can look into the external balancing possibilities so it could be mounted bolt-on into a stock setup.

[Henkjan]

could a summary of the FB page (or simply make a pdf) be put here for info?

[kenax]

I'm running a custom ATI setup on my AAN. So far so good, up to 9000rpm.

I do need to point out the fact that at least AAN is externally balanced, which means that a part of the crank's balancing is done in the original damper, so you simply can not put a zero balanced damper in the system without balancing the crank to zero as well! Do take this into account when applying another damper to the engine. Even another OEM damper will alter the balance slightly, although that's not even close to what a zero balanced damper will do.

[AudiS2Turbo]

This is my version with fluidampr.
Works very good up to 8200upm

[PRY4SNO]

I'd be interested for sure, but need to decide more about my v-belt vs. serp. on my AAT stroker.

[ringbearer]

Are these best suited for high rpm use? I am interested but not building a revver motor. Any clearance issues or bolt in for UrS aan?

[terrybullwon]

Wizard-of-OD - AAN
Tonks4x4 - 1 serpentine + 2 v-belt (ABY Version)
Rxy - ABY
Chef - 3B
jsol - 7A

[jsol]

Put me down for a 7A version

[terrybullwon]

Yes!!!! In

[mac2226]

Thanks will drop you pm later about this one ^^^^

[Wizard-of-OD]

not on FB...any chance of a picture or 3d model image?

Will draw it up tonight how the rendering will look.

Which one would I need if using AAT 2.5 diesel block

185mm? This is one we did for the 2.5 TDI Eurovan motor.

[mac2226]

Which one would I need if using AAT 2.5 diesel block

[europeanme]

not on FB...any chance of a picture or 3d model image?