Lightened Flywheel

[sideways boy]

Well thats bullshit I never said that but sure believe what ya want.
How did my bottle brake tho? It was perfect goin to ya?

You say you are not blaming Antony for the bottle but why are you saying the above so? They go in all 180s. Get over it lad

[DaveM-sport]

Most of the cons are just some of these hyped up rumors that comes part and parcel with the internet.

Gran turismo is part to blame too as alot of people took the bit about loosing torque and slowing down going up hills too seriously.



Pros, makes the car far faster to accelerate especially if its being put into a car that previously had a dualmass flywheel.
In some cars, the difference in weight is nearly halved and also the enertia of the old flywheel can be higher as well even weight aside as alot of the mass is at the outer edge.

For example on some cars, putting on in can make 4th gear feel as quick to pull as 3rd previously did.

Rev matching is nicer, heel and toe can be done alot quicker


I find driving around town is actually easier really and the car doesn't seem as lazy. This poor idling and difficult take offs is only if you go very light altogether and use a fancy clutch or coupled with very aggressive cams with wide overlap.



This thing about loosing torque is total bullshit. A flywheel doesn't make or loose power so you can't lose torque.

If reduces the rotating mass and inertia of the drivetrain alright therefor it can be easier to lose momentum but thats only relevent in something like a tractor or truck where your flying along the flat at 2000rpm and then hit a hill and start dropping back to 1500 or so.

In a car, if your flying along at 60-70mph at 2-4000rpm, you'll have another 4-6000 in reserve and plenty of throttle to open.

And as the engine is more free to rev, it'll only have the hill to overcome rather than the hill and a heavy drive-train to accelerate.



On some flywheels, skimming them on a lathe is fine. I know plenty of race cars that have had no problems once the flywheel is setup properly and true on the lathe and I have fitted quite a few lightened flywheels to road cars and no complaints so far.

Obviously on some, the balancing holes get machined off to lighten them so your going to run into problems then alright unless its properly balanced afterwards.

[topdog]

Excellent, cheers for the reply! Looking forward to getting this in now!

[ian g sr20]

.........

[nikkisixx69]

whats going on???

yeah 180 expansion bottles are shit , alan opel looked at mine and it shattered

[topdog]

u said u werent blaming me for the bottle, they u said it was perfect going to you u dnt know wat you fucking want r wat ur fucking doing,, and for the wheel ANY GOOD MECHANIC ON THIS SITE WILL TELL YOU U DNT TAKE THE WHEEL OFF TO CHANGE THE TURBO ON ANY S-BODY ./ BUT IF U ASK ANY ELECTRICAN/MECHANIC THEY WILL TELL YOU YOU HAVE TO..AND THEL ALSO TELL YOU YOU DNT HAVE TO DRAIN THE OIL TO CHANGE THE TURBO.. DNT BE TRYING GIVE ME A BAD NAME ON THIS EITHER AS I SAID CALL DOWN IF YOU WANT TO SAY ANYTHING TO ME.

Im not trying to give you a bad name on this, you brought it up on this. I said I wasnt blaming you for the wheel. The bottle was obviously you. I know you dont have to drain the oil im not tick, it was due to be changed. And once again you brought this up not me im not goin callin down, im not looking for trouble.

[darren C]

Most of the cons are just some of these hyped up rumors that comes part and parcel with the internet.

Gran turismo is part to blame too as alot of people took the bit about loosing torque and slowing down going up hills too seriously.



Pros, makes the car far faster to accelerate especially if its being put into a car that previously had a dualmass flywheel.
In some cars, the difference in weight is nearly halved and also the enertia of the old flywheel can be higher as well even weight aside as alot of the mass is at the outer edge.

For example on some cars, putting on in can make 4th gear feel as quick to pull as 3rd previously did.

Rev matching is nicer, heel and toe can be done alot quicker


I find driving around town is actually easier really and the car doesn't seem as lazy. This poor idling and difficult take offs is only if you go very light altogether and use a fancy clutch or coupled with very aggressive cams with wide overlap.



This thing about loosing torque is total bullshit. A flywheel doesn't make or loose power so you can't lose torque.

If reduces the rotating mass and inertia of the drivetrain alright therefor it can be easier to lose momentum but thats only relevent in something like a tractor or truck where your flying along the flat at 2000rpm and then hit a hill and start dropping back to 1500 or so.

In a car, if your flying along at 60-70mph at 2-4000rpm, you'll have another 4-6000 in reserve and plenty of throttle to open.

And as the engine is more free to rev, it'll only have the hill to overcome rather than the hill and a heavy drive-train to accelerate.



On some flywheels, skimming them on a lathe is fine. I know plenty of race cars that have had no problems once the flywheel is setup properly and true on the lathe and I have fitted quite a few lightened flywheels to road cars and no complaints so far.

Obviously on some, the balancing holes get machined off to lighten them so your going to run into problems then alright unless its properly balanced afterwards.

so wud this benafit a drift car?? sorry for hijack

[ian g sr20]

.......

[DaveM-sport]

so wud this benafit a drift car?? sorry for hijack

Yep, definitely. making an engine more responsive is always an advantage to any car, road, drift or track car.

Only thing that a heavy flywheel might be useful for drifting is when you give clutch kicks or shift-lock as the engine is harder to slow down by the sudden load from the clutch let back in...
BUT... as it takes longer for the engine rev up or drop revs with a heavy flywheel it'll take the engine longer to respond when reving the engine up or drop when you press the clutch so whole technique will take longer.

For example. If you had a car with very little torque and a very light flywheel when you hold the revs at maybe 6000rpm and let out the clutch the engine will die alittle more than if the flywheel was heavier which would just keep the momentum going from the engine and spin the wheels for abit longer.

However, if your bogging down mid corner in the same car and drop the clutch for a clutch kick, when a heavy flywheel is fitted it will take alot longer for you to raise back upto 6000rpm where you can let the clutch back in again and therefore while your waiting for the engine to respond your bogging down more or losing the drift altogether.

Same applies for shift-locking, heavy flywheel will try to hold the low revs more and greater force on the rear wheels but you'll have to wait longer for the engine to slow down once you press the clutch.

With the lighter flywheel fitted, you can dance away on the clutch and throttle all you like with the engine responding almost immediately



Every other aspect of drifting, the lighter flywheel will help obviously.
So pros outweigh the cons again.



Hope that all that sounds like it makes sense... it does in my head anyway

[Famous jh]

glad your not.. o this is great it was due an oil change but you never changed the filter doesnt that defeat the purpose of putting clean oil in on top of a dirty oil filter again???? . o ya as the turbo is next to the expansion bottle i had to lean over it to get at it nottttttttttt.. trouble? if u werent looking you shoudnt of said anything to any 1 bout all that bullshit you made up. look now if you dnt want trouble i would advise you not to keep this up not leting an electrican now try and tell me how to do my job

Lad your at nothing here.. Leave it go cos your only makin yourself look like a key board warrior plus he didn't go draggin it up here you did! Which is makin you look bad. Sort it between ye.