Lightend flywheel
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aapje
Well-Known Member
Jun has a 4.4KG flywheel compared to the stock 7.4KG for the GSR. Part no: 2001M-M004
4piknup
master of none
MITSUBISHI
4B11(Evo.X) U/L 4.8 2010M-M010 JPY46,200 ✔ฺ
4G63(Evo.VII-IX) U/L 5.0 2010M-M009 JPY46,200 ✔ฺ
4G63(EVO.IV/V/VI) U/L 3.8 2010M-M001 JPY42,000
4G63(EVO.I/II/III) L/W 4.5 7.7 2001M-M002 JPY40,950
4G63(GALANT) L/W 4.5 7.9 2001M-M005 JPY40,950
4G61 L/W 4.6 6.3 2001M-M001 JPY45,150 ✔ฺ
4G92(CC4A/CJ4A) L/W 5.2 2001M-M008 JPY36,750 ✔ฺ
6A12T L/W 4.4 7.4 2001M-M004 JPY45,150 ✔ฺ
G62BT L/W 6.0 2001M-M007 JPY40,950 ✔ฺ
http://www.junauto.co.jp/products/drive-train/flywheel/index.en.html
u/l ultra light
l/w light weight
do any of these fit the gsr 1.8?
4B11(Evo.X) U/L 4.8 2010M-M010 JPY46,200 ✔ฺ
4G63(Evo.VII-IX) U/L 5.0 2010M-M009 JPY46,200 ✔ฺ
4G63(EVO.IV/V/VI) U/L 3.8 2010M-M001 JPY42,000
4G63(EVO.I/II/III) L/W 4.5 7.7 2001M-M002 JPY40,950
4G63(GALANT) L/W 4.5 7.9 2001M-M005 JPY40,950
4G61 L/W 4.6 6.3 2001M-M001 JPY45,150 ✔ฺ
4G92(CC4A/CJ4A) L/W 5.2 2001M-M008 JPY36,750 ✔ฺ
6A12T L/W 4.4 7.4 2001M-M004 JPY45,150 ✔ฺ
G62BT L/W 6.0 2001M-M007 JPY40,950 ✔ฺ
http://www.junauto.co.jp/products/drive-train/flywheel/index.en.html
u/l ultra light
l/w light weight
do any of these fit the gsr 1.8?
CYBORG-X
Well-Known Member
why dont you guys just take them to a machine shop and have them lightened??? i did my m21 flywheel at work, and came out weighing less than a fidanza??
4piknup
master of none
did you machine a 9.5kg flywheel down to 4kg? i wouldnt like a cast? flywheel that thin spinning at 7000rpm thankyou. do you have a scattersheild?
sorry i see they are 8kg ish, still not sure i would like to rip nearly 50% out of a wheel
sorry i see they are 8kg ish, still not sure i would like to rip nearly 50% out of a wheel
Agreed. The lightened flywheels are made out of different things so they still hold the strength. Problem with machining stock is it looses strength. I only machine a little bit off to get the surface clean and get rid of any spots so it grips like new. I was looking into lightening them but couldn't find enough info. U can take as much off as u want. But strength wise I'm not sure.
CYBORG-X
Well-Known Member
i said it was my m21 flywheel.. which are 7.2kgs. i reduced it to 5.2kgs. the fidanda flywheel weighs 5.3 (i belive they re-designed them now to 4.8)
just for an example, which was told to me by chris meek... the factory gsr and evo (i think, this was 4 years ago) flywheels are very similar... the main difference in weight is these areas that are being machined off, they are not needed.....
chris also offered to machine the weight off the flywheel, but i did it myself...
i have also done aprox 62 suzuki flywheels (gti, baleno, vitara and sierra flywheels)
i have done several others aswell...
on my vitara i removed close to 40% of the weight... i took it to the drags, and every launch was an 8000 rpm heavy launch... pulled it out after never an issue..
are there any engineers on here that could possibly share some insiight???
CYBORG-X
Well-Known Member
yes, you loose progressional torque... car revs like nuts tho!!!
Mmm. Coznthe flywheel is heavier and spinning fairly fast once it grips the clutch that force pushes u really hard. Loose the weight and you would loose that to an extent. But on the otter hand the engine doesn't need to work as hard to spin it
4piknup
master of none
the disadvantage if a light flywheel is rougher idle and easier to stall at lights, hill starts etc. either are cured with more throttle. i put a lighter moly one in my previous wrx and it was heaps snappier in the throttle response. i think they say that losing 4kg of mass is the same as gaining 1 hp, but if it is rotating mass it is twice as effective ie. 4kg = 2hp. the positives of light flywheels outweigh (sic) the negatives.
PROGSR
1.5L FWD,NO WAY HOSIAH!!!
for a 1.8 GSR, its the same part no flywheel as the 6A12T E84A galant application
http://www.junauto.co.jp/products/drive-train/flywheel/fw-application.html?maker=mitsubishi&lang=en
only subject to>>> * The availability of BTO (build-to-order) flywheel may need two months after we received your order.
xtreme in S.A do these also>>> C/MOLY 5.4kg & ALUM 3.6kg.... evo 1-3 and GSR ...both 7 bolt
http://www.xtremeclutch.com.au//files/xtreme%20performance%20flywheel%20catalogue%20november%202010.pdf
Notes ** If crank spigots internally on flywheel, FMI113C must be used. FMI113C 5.4kg
(must use this on a * GSR * because of this feature.... C/MOLY version only available).
sadly I found out this later after I bought the FMI003C as listed for a GSR/EVO 1-3 .... but it doesn't fit because of the fixed spigot on the 4g93t crank.... extreme still believes not all the cranks are like this on a 1.8L... in the end I just fitted the stock flywheel with the new clutch assembly.... but I compensated with an alloy underdrive balance pulley on the crank. revs up quicker with this also...
4piknup
master of none
so to get the evo flywheel to fit the gsr, you may need to machine the centre locating hole larger to fit the raised boss on the back of the 4g93 crank (if it has one), what about the locating pin between the bolt holes? do evo have these too?
or pay the extra $25 for extreme to supply the fm1113c.
i would really like to try the ally flywheel, as i loved the light moly one in the wrx and ally is lighter still. extreme dont do the ally one any more it seems. but they are available from the states.
if i was to machine the wheel, may as well make it take a bearing to support the input shaft, has any one done this?
or pay the extra $25 for extreme to supply the fm1113c.
i would really like to try the ally flywheel, as i loved the light moly one in the wrx and ally is lighter still. extreme dont do the ally one any more it seems. but they are available from the states.
if i was to machine the wheel, may as well make it take a bearing to support the input shaft, has any one done this?
CYBORG-X
Well-Known Member
no you cant fit a spiggot bearing to the flywheel. the input shaft runs twin tapered bearings
4piknup
master of none
4piknup
master of none
so after comparing flywheels, you can use a 7 bolt evo on a 7 bolt 4g93 if:
lathe center of flywheel to allow crank raised section to fit,
re drill dowel hole to suit, or re position dowel on opposite side.
lathe center of flywheel to allow crank raised section to fit,
re drill dowel hole to suit, or re position dowel on opposite side.
