Information on ATI harmonic balancer - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

gpvecchi · 08-31-2021, 04:41 PM

Do you know how the weight of the ATI damper compares to stock one, and if the diameter is the same?
Thanks!

CSG Mike · 09-02-2021, 04:31 PM

It is heavier, and the diameter is identical.

86TOYO2k17 · 09-02-2021, 08:19 PM

7.07" diameter is 10% underdrive compared to the stock FA20 crank pulley
6.2lbs vs stock 4.87lbs

Bodalenko · 09-03-2021, 08:45 PM

Consider the Fluidampr. As an owner I’m very impressed..

Thefalls · 09-09-2021, 07:42 AM

Quote:

Originally Posted by Bodalenko

Consider the Fluidampr. As an owner I’m very impressed..

Would you be able to quantify the change? Is it easily perceived?

Thanks.

86TOYO2k17 · 09-09-2021, 09:57 AM

Quote:

Originally Posted by Thefalls

Would you be able to quantify the change? Is it easily perceived?

Thanks.

Not at all.
Unless you are the type of person to add a catback pick up maybe 1whp and say you noticed a dramatic seat of the pants butt dyno improvement to performance lol. The improvement to "smoothness" really isn't noticeable.

There is some testing data, and sound theory/logic behind the concept and what it does, and that it should be beneficial. but realistically there is little point especially if you are NA and/or stock block.

gpvecchi · 09-09-2021, 04:17 PM

Thanks everybody, but definetly not interested in putting in a heavier pulley than stock.

08-31-2021, 04:41 PM	#1
gpvecchi Senior Member Join Date: Mar 2018 Drives: Toyota 86 GT Limited PP (Model G) Location: Italy Posts: 1,049 Thanks: 411 Thanked 355 Times in 199 Posts Mentioned: 14 Post(s) Tagged: 0 Thread(s)	Information on ATI harmonic balancer Do you know how the weight of the ATI damper compares to stock one, and if the diameter is the same? Thanks!

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09-02-2021, 04:31 PM	#2
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,562 Thanks: 8,942 Thanked 14,211 Times in 6,854 Posts Mentioned: 970 Post(s) Tagged: 14 Thread(s)	It is heavier, and the diameter is identical.

09-02-2021, 08:19 PM	#3
86TOYO2k17 Senior Member Join Date: Jan 2018 Drives: 2017 toyota 86 Location: PNW Posts: 2,131 Thanks: 336 Thanked 1,189 Times in 781 Posts Mentioned: 16 Post(s) Tagged: 0 Thread(s)	7.07" diameter is 10% underdrive compared to the stock FA20 crank pulley 6.2lbs vs stock 4.87lbs

09-03-2021, 08:45 PM	#4
Bodalenko Steve Bodalenko Join Date: Mar 2013 Drives: Toyota 86 GTS Location: Melbourne, Australia Posts: 243 Thanks: 42 Thanked 53 Times in 39 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Consider the Fluidampr. As an owner I’m very impressed..

09-09-2021, 04:17 PM	#7
gpvecchi Senior Member Join Date: Mar 2018 Drives: Toyota 86 GT Limited PP (Model G) Location: Italy Posts: 1,049 Thanks: 411 Thanked 355 Times in 199 Posts Mentioned: 14 Post(s) Tagged: 0 Thread(s)	Thanks everybody, but definetly not interested in putting in a heavier pulley than stock.

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