Help I Have No Clutch Or Flywheel Left Lol

[20withascooby]

after yesterdays mess up i have foobarred my clutch and warped my fly wheel aswell grrrrrrrrrr

what are my options on a tight budget

standard clutch and get flywheel skimmed affordable

or standard clutch and uprate flywheel been told not to do this though affordabble

[20withascooby]

anybody heard of exedy before ???

[Nudge]

excedy are good, you can get the flywheel skimmed but i wouldnt recommend it, if its warped and you get it skimmed it will need balancing as well, id look for a replacement flywheel and uprate the clutch...

[20withascooby]

is exedy uprated or a standard part ???

[Nudge]

they do both..

[20withascooby]

wats diff between exedy clutch and a exedy organic clutch ????

[20withascooby]

think im just going to go for a standard clutch and standard fly wheel i havent got big power so dont really need better clutch hardly ever do launches or track days

[big jay]

wats diff between exedy clutch and a exedy organic clutch ????

Ones not been treated with pesticides

[deani_age]

I've got an excedy clutch c/w flywheel in my garage if you want it. Rated to + 300 BHP.

[granby]

I've got a exedy uprated clutch in mine, supposed to be good for 400bhp but they will take plenty of abuse and it's just like a standard clutch in use, i've launched mine a few times and apart from a very slight smell of clutch for a few seconds it's fine and doesn't slip, if you go for a standard clutch then your gonna be in the same situation as you are now

Your also probably gonna need another flywheel anyway so i'd go for a lightened one, it does make the engine smoother and the only down side with it is there is less engine braking but you just get used to it and it's not a problem

[20withascooby]

my flywheel is warped judders like a biatch its the budget im on though

[20withascooby]

hmmmmm

Edited June 9, 2008 by 20withascooby

[pistonbroke2]

I've got a exedy uprated clutch in mine, supposed to be good for 400bhp but they will take plenty of abuse and it's just like a standard clutch in use, i've launched mine a few times and apart from a very slight smell of clutch for a few seconds it's fine and doesn't slip, if you go for a standard clutch then your gonna be in the same situation as you are now

Your also probably gonna need another flywheel anyway so i'd go for a lightened one, it does make the engine smoother and the only down side with it is there is less engine braking but you just get used to it and it's not a problem

Are you sure about that Granby,? I thought Lightweight flywheels make the car lumpier due to the less rotational mass in the flywheel. You also get more pronounced engine braking with lighter flywheels due again to the lack of weight in the flywheel carrying the momentum of the engine.

[BLUE V LTD]

I've got an excedy clutch c/w flywheel in my garage if you want it. Rated to + 300 BHP.

How much do you want for it dean. Thats if 20 not having it of course.

[20withascooby]

too late blue v was watching the vids u are quite good at launching how do u do it

[dazzlers82]

Are you sure about that Granby,? I thought Lightweight flywheels make the car lumpier due to the less rotational mass in the flywheel. You also get more pronounced engine braking with lighter flywheels due again to the lack of weight in the flywheel carrying the momentum of the engine.

i agree with granby my car is not lumpy at all well i dont think so an due to the flywheel being lighter its easier to turn therefore you get better pick up of the engine but less engine brake

[20withascooby]

i dont care lol i just want somesort of flywheel thats not warped to fook like mine is grrrrrr

[pistonbroke2]

I've been scouring the net for a definitive answer on this. I'm still pretty sure a lightweight flywheel causes GREATER engine braking effect due to LESS rotational momentum carried from the flywheel (which effectivly is storage for forward momentum) and came across this.

Flywheel Upgrades

How does a lightweight flywheel improve performance? A transmission can be thought of as a fulcrum and lever in a car. First gear has a really long lever; second gear has a shorter lever, etc. The lever represents the mechanical advantage that gears give your vehicle. When your car is moving, you have two factors that are present during acceleration, one is driveline losses, which are constant and the variable, which is vehicle weight and the mechanical advantage supplied by each gear. While changing to a lighter flywheel will give the user little to no changes on a dyno, the apparent changes are quite dramatic due to the greater mechanical advantage. Consider these made up figures for consideration: Drive line losses, 45 pounds and vehicle mass (weight) at the driveline (remember your gear's mechanical advantage reduces your actual car weight). We know that within reason, vehicle mass is a constant. Now imagine if you reduced the driveline loss from 45 to 35 with the use of a lightweight flywheel. Since the engine has less drivetrain losses to compensate for, this means the "gained" horsepower can be applied to moving the vehicle mass. Using mathematics, one can realize that the higher you go up in gears, the less effect that a lightened flywheel will have to the overall equation.

How much will a lightweight flywheel affect my car's performance? This Excel document will allow you to find out for your WRX or STi application.

Are there any downsides to a lightweight flywheel? While the performance characteristics of a lightweight flywheel seem to be the perfect solution, there are compromises:

a. Low end performance is affected. This usually means that higher revs are necessary for smooth starts due to the reduced rotational mass. For drag racers, this can be a BIG issue.

b. Missfire check engine lights on the WRX.

What causes a missfire CEL with lightweight flywheels? No one is really sure. There are theories though. One theory is that the Crank Position Sensor senses the rotational speed of your crankshaft. Since a lightweight flywheel reduces the rotation mass of your engine, your crankshaft accelerates and decelerates quicker than OEM specifications. Another theory is that there is a missmatch of information from your Crank Position Sensor and the Cam Position Sensor during acceleration and deceleration. This may or may not be caused by the slow reaction of the belt tensioner which will cause enough belt slop to give erroneous readings to the ECU. Since missfire CELs (due to lightweight flywheels) do not occur on the STi and the STi has two Cam Position Sensors, this adds further evidence that the missfire CEL has something to do with the Cam Position Sensor since there is only one on the WRX.

Which lightweight flywheel will not throw a missfire CEL? In truth, there is no lightweight flywheel that will not throw a missfire CEL. The odds of you throwing a missfire CEL are higher the lower in flywheel weight you go. Even with a “heavier” lightweight flywheel, you may throw a missfire CEL. To date though, STi owners can use lightweight flywheels of any weight without throwing a missfire CEL.

Will the use of a lightweight pulley increase my chances of a missfire CEL with a lightweight flywheel? Yes. To a smaller degree, lightweight pulleys also decrease rotation mass, adding their quicker acceleration and deceleration into the equation.

How do I fix a missfire CEL with a lightweight flywheel? The safest course of action is to use a portable OBDII code instrument and clear the codes frequently. Once you know the frequency of the missfire CELs, it will aid you in determining if this is an actual code or perhaps something to investigate further. While the missfire CEL code is a "safe code" (just an indicator and won't throw your car into safe or limp mode), it is never a good idea to drive around with the CEL on for extended periods of time as another, more serious code can be present without your knowledge. Additionally, it is not a wise idea to remove the missfire CELs via engine management software. Missfire codes can be an indication of a problem and removing their presence will remove possible symptoms of an actual problem.

Who is a good or a bad candidate for a lightweight flywheel? Arguably, the users whose driving technique is most highlighted by the benefits of a lightweight flywheel are people who autocross frequently. Many people are also genuinely happy with the performance increase in their daily driven vehicles as well. The only group that is generally dissatisfied are people who competitively drag race as the reduced rotational mass does not lend itself to their severe launch techniques.

Taken from http://www.subydude.com/osc/detailsdoc.php?3065

[pistonbroke2]

Asking google the question about engine braking effect shows a pretty clear answer that it seems to increase engine braking .

http://www.google.co.uk/search?hl=en&q...aking&meta=

EDIT- it seems it depends on what actual engine braking effect we are addressing. Riding the gear using the engine to slow you down will have a greater effect. But, coasting with the clutch in then engaging the gear will not initially slow the car down due to the fact the flywheel can spin up easier. Once engaged however, the engine will in fact slow the car quicker than it would if it were to have the heavier flywheel.

Edited June 10, 2008 by Pistonbroke2

[granby]

Are you sure about that Granby,? I thought Lightweight flywheels make the car lumpier due to the less rotational mass in the flywheel. You also get more pronounced engine braking with lighter flywheels due again to the lack of weight in the flywheel carrying the momentum of the engine.

Yes i am sure , my flywheel is lightened from standard 11kg down to around 7-8kg, it does not affect the idle at all, it's no different pulling away ie doesn't stall if you don't give it enough revs (the ultra light flywheels may have this problem), the engine revs smoother because of less rotating mass and it definitely has less engine braking, the engine braking just takes a little getting used to

[pistonbroke2]

Ok, I submit, seeing as you have first hand experience and you actually own a lightened flywheel. My argument is negated

[granby]

Ok, I submit, seeing as you have first hand experience and you actually own a lightened flywheel. My argument is negated

The first time you come off the throttle at 70mph with a lightened flywheel because someone has pulled out in front of you when normally the car just slows down but it doesn't so much it soon gets you attention

[BLUE V LTD]

too late blue v was watching the vids u are quite good at launching how do u do it

hold the revs at 4000 to 5000 and let the clutch go.

[deani_age]

The Exedy Racing Billet light weight Flywheel is 5.75KG, a standard impreza classic flywheel weighs in at about 10kg, whilst a medium weight flywheel is about 7.5 kg.

Check out the webpage below for more info.

http://www.rjes.com/html/flywheel_types.html

[mikkers]

Sorry for being a bit thick, but isnt your clutch meant to be the weak link in your transmission, i always thought it was meant to give up before your box does, so wouldnt an uprated clutch just put more pressure on your gearbox?