Want to change FLYWHEEL dont want to loose anything

**Ozwolfbane** · 02-01-2005 12:54 PM

hi, :thumbup:
I have searched some threads but i couldnt find an exact answer. I am putting a JDM H22 in my Si so thought mightaswell change the clutch and while im at that put a new flywheel.
What my question is does changing the flywheel give more horse power at wheel ?
How much increase for that Investment ?
Im looking at a 8lb (3.6Kg) FIDANZA Flywheel. I dont want to loose any power or low end accelration or anything...so is changing the flywheel for my needs ? I dont take car to track....just the odd street drag and all...
thanks

**Weq** · 02-01-2005 01:12 PM

think of a flywheel as weight reduction. u decrease the turning mass of the car at the crank. u dont gain any HP.

**Ozwolfbane** · 02-01-2005 01:13 PM

I mean horse power at wheels

**VTEC16** · 02-01-2005 01:58 PM

your engine isnt making more power - but it does put down more power at the wheels.

**Dnation** · 02-01-2005 03:06 PM

Its beneficial in that the load from the engine crank to the gearbox is less, and thus, theoretically, u will accelerate faster and have more power at the wheel.. engine hp shouldnt change though..

Dont u play Grand Turismo and read up on the mods???? that game is pretty accurate..

**edw-R** · 02-01-2005 03:30 PM

Is it gain on the wheel?? not on the flywheel??

**hondar** · 02-01-2005 03:57 PM

dont be obsessed by hp power only. highest hp does not mean winning always.

flywheel dont make power, u accelarate faster compared using stock flywheel and very useful for short races where u need to pick acceleration straight away becos u dont have the distance to pick up the speed.

**ginganggooly** · 02-01-2005 04:16 PM

Originally Posted by Dnation

Its beneficial in that the load from the engine crank to the gearbox is less, and thus, theoretically, u will accelerate faster and have more power at the wheel.. engine hp shouldnt change though..

Dont u play Grand Turismo and read up on the mods???? that game is pretty accurate..

yeah! fully bro!
i want a stage three NA build up

i love it how everything is done in stages/levels....

**Limbo** · 02-01-2005 06:45 PM

O one thing you should note is that with a lighter flywheel you will need to rev more to take off, and will be easier to stall. This is because the flywheel weight is not as great and is easily stopped by the force of your gears. So this may affect your daily driving ever so slightly. The lighter the wheel the greater the effect.

Otherwises it is a great mod, no gain at all on the engine, but you will put slightly more power to the ground cos you are not loosing power to spin the heavier flywheel!

btw.. how much was the flywheel?

**Limbo** · 02-01-2005 06:52 PM

One thing generally you will find there is a down point to all mods. Otherwise if they were cost effective and made more power the manufacturer would have already had them on!

**ProECU** · 02-01-2005 08:06 PM

Lighter flywheels are generally a good idea. Most car manufacturers design/build engines with street driveability in mind (ie for grandma's & chicks etc), which typically in this topic of conversation might mean a heavier flywheel than needed.

The downside to lighter flywheels generally, would mean the inertia or centrifical force generated would be less, and hence the car would de-accelerate faster when off the throttle. This has implications for hill driving and taking off.

Personally, i'd go a lighter flywheel, but nothing too excessive, as the same acceleration effect can be gained with gear box final drive modifications, without expending inertia.