ARDC Members Complimentary trackday at EC on 12Dec

[zuihoujueding]

Simota CF intake
Xforce exhaust
light weight pulley kit from RB performance
Kido coilovers
Brakelab pads
DBA 4000 series front rotors
Whiteline rear sway bar
Ultra racing front/rear strut bars
Kumho KU36 215/45/R15 rubbers

Thats about all worth mentioning.

[silverGPX]

Aren't lightweight pulleys bad for the engine as they dont dampen?

I found a really cheap lightweight crankshaft pulley and did a bit of research and most of it said as there is no weight it doesn't dampen vibration.

[zuihoujueding]

The vibration dampening is absorbed by the rubber within the stock pulley (harmonic balancer?), which is absent in my alumium version. You are right, it is an issue.
But after much research, the issue only become apparent when applied to big power engines, ours are not. So technically it is still safe to use. Mine are sourced from RB performance UK, which do do lots of FTO mods in UK. Ofcos, there are aluminium harmonic balancers which are best of both worlds, but they are expensive.

But for me, so far so good.Fingers crossed.
Note that the weight difference are quite obvious too. have you carried a stock harmonic balancer?

[ZFL45H1]

have you carried a stock harmonic balancer?

Yes and it's no feather

[spetz]

What are your alignment settings if you remember?

And, did you notice any difference with the lightweight pulley?
To be honest personally it's not a mod I'd want to do, however a lightweight flywheel would be something of interest

[Bennoz]

Aftermarket ones are ok, so long as you get them properly balanced.

[zuihoujueding]

dont feel much difference. it is just like lightweight pulley+ flywheel with intake+exhaust, i only got half of the equation right. LOL

[Shane001]

So technically it is still safe to use.

Personally I would disagree with this. It is a risk to your engine. Possibly low risk with the FTO but a risk none the less.

You will find there are certain rpm points of the engine where the harmonic imbalances all line up where if you happen to spend a lot of time at or around this rpm point you will have major problems. And no I have no idea what those points might be on the FTO, and have no intention of finding out lol

[zuihoujueding]

agreed

[Shane001]

agreed