Ok all, time for another question this one is in regard to flywheels or specifically lightened compared to stock on a daily driver. What are the advantages or disadvantages of using a lightened flywheel on a DD. I understand that it produces more power to the wheels. However, I would believe that it would also make the engine spin quicker making the turbo spool faster but simultaneously reducing the effectiveness of first gear and requiring more frequent shifts especially in manual cars which could cause (I believe) the turbo to have to rebuild pressure. Also, are these benefits increased significantly with lightened drive shafts? I understand that doing both along with lightened rims would be the way to go for racing but not sure on their real world application as it applies to road driving. I know with motorcycles we use to use lightened rims, tires, disc’s, chain, and sprockets but it could be different with a turbo vehicle.
Lightened flywheel question
- Thread starter Jay C
- Start date
im running a Fidanza lightweight. about half the weight of stock i think. you should be out of first gear pretty quick anyway, i dont even bother romping on it until im in second, first will spin while boosting in dry, or just all the time in wet(fun). time for new tires lol
I run a fidanza as well. The engine revs faster and is more responsive but it's much pickier about how I shift. Combined with an aluminum shaft stop and go traffic can be a challenge sometimes.
I thought the idea behind a heavy flywheel was to give the rotating assembly enough momentum to overcome the drivetrain's stationary inertia when shifting into 1st?
I thought the idea behind a heavy flywheel was to give the rotating assembly enough momentum to overcome the drivetrain's stationary inertia when shifting into 1st?
benchwarmer;1633930 said:
Ever seen how hard it is to get an F1 car going from a stop? That is exactly why they add weight to the flywheel, to make the car drivable. Also, in the aspect of drag racing, it's nice to have some mass to disperse the heat so you don't weld your clutch to the flywheel...
I have an OS Giken triple disc clutch on order, when talking to them about it they stated that the flywheel included was heavier than their normal one for a twin. The thinking behind this was to help with lag in a big single turbo. Personally I would spend the money on an ATI Super Damper to replace the stock one, some what lighter w/ new harmonics and better performance.
-Fred
-Fred
I've driven cars with lightened flywheels, and from a daily driver stand point they suck. In a non-drag, track car there are definitely benefits. In a weekend canyon carver there are definitely benefits. And while you can get used to touchy engagement, and picky shifts, it still requires more effort than it should; it really takes the joy out of driving on a car that you spend a lot of time behind the wheel, in my opinion.
It really ends up being a personal preference kind of thing. I drive a lot, and an excessively light flywheels bugs the hell out of me. Some people may not care at all.
It really ends up being a personal preference kind of thing. I drive a lot, and an excessively light flywheels bugs the hell out of me. Some people may not care at all.
I have a Fidanza with a stage three clutch. Bad combo on the street as a daily driver. I am thinking of changing just the clutch to something milder and keeping the lightened flywheel. I too am interested in experienced opinions. I really enjoy the quick response with the lightened flywheel but with the current combination I am embarassed to admit that I have occasionally stalled when the light turned green.
i have stock clutch with the fidanza fw, i love it. first trip around town was touchy, but after the first few lights you get used to it
I have a stock flywheel on my 1j (old one was toast, stupid boost...), with whatever 6 puck clutch DM sells (ACT? Action Clutch?), and I gotta say, it's nice. Barely any chatter even though I usually get off the line just off idle speeds. That said, it'll grab whatever I throw at it, and it's no slower than cars with the lighter flywheels...
My real reason for staying with a stock (heavy btw) flywheel is that I drive my Supra all year, in snow for about 5-8 months. You really don't wanna have to drive too aggressive a clutch hear in the winter if you can avoid it.
My real reason for staying with a stock (heavy btw) flywheel is that I drive my Supra all year, in snow for about 5-8 months. You really don't wanna have to drive too aggressive a clutch hear in the winter if you can avoid it.
KMinAF;1634068 said:
Keep the revs up and slip it coming out of the hole. Always worked for me---until the old TB started sticking!