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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 08-12-2019, 06:28 PM   #15
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I actually had both...still have the Fluidampr in mine. Had Raceseng, Grimmspeed and Perrin. The gains from it are just in your head..."yeah, revs faster bro".
Fluidampr that I have now, has actually made the car really smooth!
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Old 08-12-2019, 07:53 PM   #16
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Fluidampr that I have now, has actually made the car really smooth!
What if that’s in your head too?
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Old 08-12-2019, 08:57 PM   #17
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What if that’s in your head too?

Could very well be. But to be honest I have noticed a difference in how the car behaves when I changed the stuff over.
Either or, I know it helps with the longevity of it...so I am happy is there
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Old 08-13-2019, 02:00 AM   #18
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I know it helps with the longevity of it...so I am happy is there
[pedant]
How do you know?
You have a sample size of one. *shrug*
[/pedant]
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Old 08-13-2019, 02:02 AM   #19
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These threads are so much fun.
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Old 08-13-2019, 02:03 AM   #20
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I fitted a Perrin LWCP years ago.
I thought maybe, am I kidding myself? for the first 18 seconds of having it fitted it might have made a difference.















But I'm not sure.
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Old 08-13-2019, 02:08 AM   #21
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I'm tempted to start another thread on lightweight pulleys.
You know, just because.
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Old 08-13-2019, 02:11 AM   #22
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Searchs "lightweight pulley" on the engine forum.
Gets 3 pages of hits.


And I'm drunk.
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Old 08-13-2019, 07:33 AM   #23
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Searchs "lightweight pulley" on the engine forum.
Gets 3 pages of hits.


And I'm drunk.
kind of guessed that. It is weird, in my Yaris you could feel the difference immediately. In the brz it is harder to see if there is anything. Oh well. They must need to make them out of titanium or carbon fiber.
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Old 08-14-2019, 09:03 PM   #24
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[pedant]
How do you know?
You have a sample size of one. *shrug*
[/pedant]
According to the actual science behind it.
"the damper is used to reduce and if at all possible eliminate the vibration and harmonic energy created by the firing pulses of the engine. Without a balancer or damper, the harmonic forces that the crankshaft is seeing would quickly damage the bearings in the short block of an engine."

and plenty of data showing benefits of having the damper left in (in stock or aftermarket form).

For more information : https://harmonicdampers.com/index.ph...id=4&chapter=0
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Old 08-14-2019, 11:45 PM   #25
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According to the actual science behind it.
"the damper is used to reduce and if at all possible eliminate the vibration and harmonic energy created by the firing pulses of the engine. Without a balancer or damper, the harmonic forces that the crankshaft is seeing would quickly damage the bearings in the short block of an engine."

and plenty of data showing benefits of having the damper left in (in stock or aftermarket form).

For more information : https://harmonicdampers.com/index.ph...id=4&chapter=0
That paper was an interesting read but it makes lot of generalisations; there is no analysis of individual engines. That is, some engine configurations are more susceptible to nasty harmonics than others. Given how many aftermarket lwcp have been fitted to 86/BRZ/FRS without failure it would seem that the difference between oem and aftermarket isn't huge.


And I'm not quite sure what I getting at when I quoted you because, as I mentioned, I was somewhat intoxicated when I posted.
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Old 08-15-2019, 05:51 PM   #26
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And I'm not quite sure what I getting at when I quoted you because, as I mentioned, I was somewhat intoxicated when I posted.
4 posts in a row bro!

Well, depends on how high the revs go on regular basis on said cars. I think that if there was no need to have a harmonic balance on the pulley, Toyota would've not put one in.
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