View Full Version : Fly wheel
How many weight normaly o take from a fly wheel of a E16SE engine?
It going to have more power or torque.
Maybe i?m going to take some weight and balance the fly wheel but first i want some advices.
thanks
Philsutton
04-11-04, 08:21 PM
not sure what you can take off a E16SE flywheel but i took about 1.5 kilos off my 2lt 16v one and it picks up revs a lot better. I dont think its going to make much difference to the power/torque
i beleave lightening the flywheel gives you a little more power but a little less torque!! im probably rong though
correct me if im wrong, but a lighter flywheel means that ur engine will pic up Rpm a lot quicker then a non-lightened version.
you will NOT gain Bhp, only LOWER acceleration times. e.g 0-60 etc. :roll:
ur engine will pic up Rpm a lot quicker
only LOWER acceleration times. e.g 0-60 etc.
Abit of a contradiction don't you think?! As far as i'm aware, a lighter fly wheel means the engine will go through the revs quicker but due to it having less weight, your torque will suffer abit. This means that your 0-60 time should be quicker (unless you've weighed your car down with ICE etc). But i may be wrong........
Snowface
07-11-04, 12:19 PM
ur engine will pic up Rpm a lot quicker
only LOWER acceleration times. e.g 0-60 etc.
Abit of a contradiction don't you think?! As far as i'm aware, a lighter fly wheel means the engine will go through the revs quicker but due to it having less weight, your torque will suffer abit. This means that your 0-60 time should be quicker (unless you've weighed your car down with ICE etc). But i may be wrong........
dunova is right.
LOWER acceleration times are good. I think your getting confused.
I had it done to my E16SE took off about 1 kilo (I think it was a while ago!) Its worth doing, not only to hear the revs rise and fall quickly!
To summarise:
Top end suffers
But acceleration improves in the 0-60mph range (ish)
How is that possible if the torque is reduced?
What effect does it have on acceleration in the 61-170mph range?
Or is it this range of acceleration that suffers rather than the top end mph?
So if i put the fly whell ligther and balanced i have:
- Better acelaration :lol:
- Less torque :cry:
- Less top end :cry:
- The same power :|
Maybe is not very good ideia????? What you do if you people was in my place, is because doing that in Portugal it going to coast me a fortune maybe 500?.
Philsutton
07-11-04, 04:58 PM
the only difference i noticed when i did mine was on acceleration an when revving it. I'd say its worth doing, i didnt lose any top end or power. I took mine to an engineering shop where they lightened an balanced it for about ?50 not sure what that is in euros but it shouldnt be very expensive
its deffo worth doing, i did it to my old gsi lump and that revved like a bastard and felt nicer to rev it higher as there was less vibration, im gunna do the crank rods pistons flywheel and pullys on the new motor so sshould rev like a bike :D
Snowface
07-11-04, 07:41 PM
imagine it the other way, if you put a lot of weight onto ur flywheel. it would take longer to spin up but would have more torque at mid range.
it may take a bit longer to get to maximum rpm also but it should get to the same speed as a lighter one eventually.
Am i being thick ??? :oops:
Isn't torque a mesurement of a cars ability to accelerate?
How can acceleration improve but torque suffer?
Clutch, its not worth doing if its going to cost you 500 euros, which is around ?350!!
It cost me ?35 which is around 50 euros!
Put the 500 euros towards weber 40s, or a chip, something that will have a bigger effect on your car than just lightening the flywheel.
gunzi
you dont lose torque!!!!!!
you lose the ability to hold it, eg if you go up a hill the engine will die off a bit quicker than if it had a heavier flywheel.
you shouldnt lose top end either, just again it might not hold onto it so readily
the engine WILL rev freer, eg it will pick up faster (and go down faster too)
no power is gained or lost with a lighter flywheel, but the rate of change of RPM is made faster :-)
Clutch, its not worth doing if its going to cost you 500 euros, which is around ?350!!
It cost me ?35 which is around 50 euros!
Put the 500 euros towards weber 40s, or a chip, something that will have a bigger effect on your car than just lightening the flywheel.
gunzi
But 500? is ligth and balance tha fly whell is a lot of money.
About the chip what?s the best one?
In theory will could gain a small amount of top end cause there is less "stored" energy in th eroating mass of the flywheel allowing a slightly higer ouput. But that's acedemic. the results are as cambridge said already.
There is a limit to lighten the std cast flywheel by before it's too unstable and can fall apart, SBD will tell you the limit by how much they lighten there's to. Look at the 1.6 16V it's the same flywheel. Will give you an idea how much needs to come off.
It's also worth mentioning that the weight needs to be removed from the outer most edge of the flywheel to have the most benifit.
You could spend your money on something else like a high lift camshaft or modified cylinder head
Look around this site, a vauxhall tuning specialist:
http://www.courtenaysport.co.uk/default.htm?page=15
(the power gains are slightly optimistic)
If u have 500 euros, you should check out Bill Byldensteins B+ cylinder head package, ask anyone on this site, its the best cylinder head modification going. Problem is he does not have a website! His number is 00441763 272866 to get prices.
gunzi
he does have a website. www.billbyldenstein.co.uk so somthing like that
http://www.blydenstein.co.uk/ A very good use of 500 Euros.
Gunzi, I live in Berkshire. Where did you get your flywheel lightened?
I'm a student in Pompey at the mo and got it done at a local engineering company down 'ere!
jon_boy
14-11-04, 06:57 PM
Power is torque times speed. So my lecturer said. So there is less toque at the top end but its gets there quicker cos it lighter at the fly wheel. if that makes sence. Sounds like one of those mods to do when you have done everything else tho. Only to be done if youve carried out all the other more basic mods such as carbs/injectors, cams etc.
Yeah, power =torquexengine speed you will not loose or gain either by making a compenent light, merely the rate of change.
The only gain would be from reduce paracitic losses.
Powered by vBulletin® Version 4.2.5 Copyright © 2024 vBulletin Solutions, Inc. All rights reserved.