Ogura Flywheel on the way

[rev210]

Well taka's shipped my Ogura racing flywheel today. hooray!

Out goes 9.8kg cast iron boat anchor in goes 4.8kgs of chrome-molly fun.

I might get one of the sprung button clutches from autoclutch while I'm at it.

BTW Anyone one know if the GTST gearbox has to be drained before removal? (ie: does the bastard leak when you drop the tail shaft out).

[Gradenko]

Sounds like the shiznit. Let me know once you've got it in

[adam 32]

are u doin a before/after dyno or drag run? so you can see exactly what diff it makes?

[rev210]

Originally posted by adam 32

are u doin a before/after dyno or drag run? so you can see exactly what diff it makes?

I might get down the drags tomorrow (f/wheel won't be in), car is running pretty ordinary tho' I'll have to try and give it a tune before I go down.

I know the light flywheel is a great mod, I've done this to my cars in the past as one of the 'first' mods, on a turbo charged vehicle I can only imagine how much better it will be

[25GTT]

Heya Rev210,

sounds sweet dude!

Hey can you give me some more details about the flywheel eg, who is installing it? how many HP you expect at wheels? how much from Taka? are there any side effects?? Ups and downs of doing this? oh and any precautions??

hehehe man i ask a lot of questions!! :uh-huh: I'm just not very familiar with the flywheel side of things ... any info is appreciated!

Thanks dude!

[rev210]

Originally posted by 25GTT

Heya Rev210,

sounds sweet dude!

Hey can you give me some more details about the flywheel eg, who is installing it? how many HP you expect at wheels? how much from Taka? are there any side effects?? Ups and downs of doing this? oh and any precautions??

hehehe man i ask a lot of questions!! :uh-huh: I'm just not very familiar with the flywheel side of things ... any info is appreciated!

Thanks dude!

I'll install myself, its a dirty job but some one has to do it.

HP wise: It doesn't register on a dd style dyno. The reduction in inertia and loss of friction adds up to faster accelleration, something we normally atribute to more horsepower being present.

Your 0-100 times and any other accelleration based measurement will show an improvement. Every 1kg lost from the flywheel has the effect of roughly 4 - 6rwkw extra on some cars.

Cost from Taka's is about $790 including freight and a credit card surcharge.

Pro's : Faster accelleration FULL STOP. Less strain on the gearbox, quicker gear changes. Faster boosting. Much stronger than stock flywheel . Oh and better fuel economy ( who cares about that tho' ).

Con's : None . People will say you lose revs between gears - let me assure you the speed at which you can 'slam' the gears and just pure accelleration make this a dead issue. People also make bones about the jerkiness in low speed. Ogura engineer these flywheels so well in terms of ballance it doesn't and the RB25 is a very torquey engine so even a fairly poor design wouldn't be bad I'd imagine.

Side effects : as with all accelleration mods --->

[puckish]

Drain the oil

Why? Well one it weighs a shed load less making it easier to haul out the box. Two it's good practice to change the oil every so often.

[25GTT]

Cheers for that... So even though it won't give a bigger HP figure Torque is largely increased due to the wheel being so lightweight........

Hmmmm not a bad idea!

i read before that cam gears are similar?????

[rev210]

Originally posted by puckish

Drain the oil

Why? Well one it weighs a shed load less making it easier to haul out the box. Two it's good practice to change the oil every so often.

Granted its a bit lighter (1kg) ,but the bastard part is the lovely smell of used gear oil in your hair. I want to know if the input seal leaks on these sorts of boxes.

Also, I don't need to change the oil , I do this every 10-15,000kms anyway.

25TT --- Doesn't increase torque (this is a function of HP), it decreases intertia, similar to shedding weight from the vehicle but kinda different.