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Light flywheel pros /cons

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9 replies to this topic

#1
OLDIE

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Have been wondering for some time now as to weather I should install one in my Starion.

I hear stories that they make the car/motor more responsive and help it come on boost sooner due to it revving faster when powering out of corners etc

 

Would appreciate informed first hand info :)



#2
jack be nimble

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Every advantage outweighs the disadvantage.
Disadvantages include rougher idle, and easier to stall. Fix either with more revs!

Reducing rotating mass is twice as effective as non rotating mass.
I have one in my ute. I dont notice it, but im turbo free at moment. However i did put one in a wrx and certainly noticed that change.

Do it oldie.


Not sure why my writing is small on full version. Im on phone. Sorry

Edited by jack be nimble, 07 April 2018 - 10:22 PM.

4g93t jumbuck conversion. PRANGED 18/3/12, CHECK MY MEMBER RIDES Page 11. no serious human injuries.
ON THE ENGINE STAND. g4cs 2.4l + Gt35r. PLUS: auto conversion + Awd coming.
thanks for parts and help: BMGTZ, EVOCPE, cwolf, Benozi, Jamo-GSR, 1JUM2NV, RXVII..much appreciated, cheers guys.
Aerodynamics are for people who can't build engines. —Enzo Ferrari
REMEMBER: you cant polish a turd, but you can roll it in glitter.

#3
ENGINR

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Definitely worth doing. Less rotating mass is a good thing. Most OE flywheels are the mass they are to enable comfortable and easy driving for the masses.
"I got an idea, an idea so smart my head would explode if I even began to know what I was talking about." - Peter Griffin

#4
Derek

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Rad mate, 1st had experience in a Staz, Josh Staz I borrowed & managed 240kph in it... 3 weeks later clutch went, Josh wanted me to lighten it.. which i did, 18Lb's from memory... all he could get out of can was 180kph. You may say isolated case... NO.. Craig's Staz ( you know which one Rad) that I built... we had billet flywheel made, 1st was 18Lb's as he was told it would work... I Insisted on 22-24Lb's, after $1500 & 2 flywheels guess which one he is using??? 22.5Lb's. In a Turbo car with low displacement it makes a big difference, in a 5L V8 on methanol... not so much.

 

Both Josh & I will never go down the road of lighten flywheels for a Staz.... Period.

 

That's my 2c Worth


Edited by Derek, 08 April 2018 - 12:16 PM.


#5
DOUGMO

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do it


GENUINE CE9A evo2 gsr track car
all fabrication BJP AUTOMOTIVE
winton 1:27.4 /// sandown 1:21.5 /// phillip island 1:49.2 /// haunted hills 59.1
/// eastern creek 1:35.4 /// winton short 1:01.4


#6
jack be nimble

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Id suggest to buy a light one rather than machine a factory one. Exploding steel right next to my ankles doesnt appeal to me.
Get the aluminium, or the light steel one if they are available.
4g93t jumbuck conversion. PRANGED 18/3/12, CHECK MY MEMBER RIDES Page 11. no serious human injuries.
ON THE ENGINE STAND. g4cs 2.4l + Gt35r. PLUS: auto conversion + Awd coming.
thanks for parts and help: BMGTZ, EVOCPE, cwolf, Benozi, Jamo-GSR, 1JUM2NV, RXVII..much appreciated, cheers guys.
Aerodynamics are for people who can't build engines. —Enzo Ferrari
REMEMBER: you cant polish a turd, but you can roll it in glitter.

#7
jack be nimble

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http://www.dsmtuners...lywheel.474740/

Auspec vr4 (sorry mate, dont know your name) had issues with his stock one.

I had a mate in a xr8 pop his flywheel at big speed. Destroyed everything- broken windscreen, holes in bonnet, buckled firewall. Dont think he could hear the clutch slipping in top gear, over the stereo...thought redline in top was cool..

Edited by jack be nimble, 09 April 2018 - 01:00 PM.

4g93t jumbuck conversion. PRANGED 18/3/12, CHECK MY MEMBER RIDES Page 11. no serious human injuries.
ON THE ENGINE STAND. g4cs 2.4l + Gt35r. PLUS: auto conversion + Awd coming.
thanks for parts and help: BMGTZ, EVOCPE, cwolf, Benozi, Jamo-GSR, 1JUM2NV, RXVII..much appreciated, cheers guys.
Aerodynamics are for people who can't build engines. —Enzo Ferrari
REMEMBER: you cant polish a turd, but you can roll it in glitter.

#8
OLDIE

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Rad mate, 1st had experience in a Staz, Josh Staz I borrowed & managed 240kph in it... 3 weeks later clutch went, Josh wanted me to lighten it.. which i did, 18Lb's from memory... all he could get out of can was 180kph. You may say isolated case... NO.. Craig's Staz ( you know which one Rad) that I built... we had billet flywheel made, 1st was 18Lb's as he was told it would work... I Insisted on 22-24Lb's, after $1500 & 2 flywheels guess which one he is using??? 22.5Lb's. In a Turbo car with low displacement it makes a big difference, in a 5L V8 on methanol... not so much.

 

Both Josh & I will never go down the road of lighten flywheels for a Staz.... Period.

 

That's my 2c Worth

 Hi Derek Lee Thomas has also advised to stay with the billet stock weight Flywheel he made for me

 Had a call from Craig asking if I had any bells left so he could fit an RX box but have none left. Told him that Dave had a bell for sale  that fitted a W series box.

Have you settled in  @ Harvey Bay ??and working still ??



#9
bazeng

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I've had an alloy light weight fidanza. The car was like a go kart!

Revved quick. Overall was great.
I needed to hold more power so went twin plate which are unfortunately in my case, heavier in weight due to more mass.

Pros with heavy = more inertia so taking off is easier and more mass to get the car off the line.

Better for cruise or steady state. Once again, more mass.

Cons = slower to accel.


Non issue with a steel flywheel. Just get yourself a scatter shield.

If an alloy one fails (flywheel bolts break or come loose ), that flywheel will turn into a circular saw!

Well worth the investment.

#10
OLDIE

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Baz my BILLET FW is held in place with ARP bolts  :thumbsup:  so don't see any need for a scattershield  :) 




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