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1g-fe Jun Lightweight Flywheel


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hi guys

i am about to buy one of these

but would it be ok if i keep the car standard?

because it says on the website "JUN Ultra Light Weight Flywheel is targeted the customers who regard the higher rotation area for their highly modified engines"

thanks guys :)

wahid

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Yep it would be fine on a standard engine. Will improve throttle response & acceleration. Only down side is you'll lose revs quicker on hills. Just be sure you order the right flywheel as there are two options:

junflywheel.jpg

What clutch kit are you planing to use? The 1G-FE is equipped with a duel mass flywheel from factory & as you're planing to change it to a solid type you'll have to use the appropriate kit to suit. (the OE clutch wont work the Jun flywheel).

Exedy do a kit for the solid flywheel http://exedy.com.au/SpecSheet.aspx?SpreadsheetRowId=62668

& Complete clutch kit inc flywheel http://exedy.com.au/SpecSheet.aspx?SpreadsheetRowId=62667

& OE replacement http://exedy.com.au/SpecSheet.aspx?SpreadsheetRowId=62666

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Yep it would be fine on a standard engine. Will improve throttle response & acceleration. Only down side is you'll lose revs quicker on hills. Just be sure you order the right flywheel as there are two options:

junflywheel.jpg

What clutch kit are you planing to use? The 1G-FE is equipped with a duel mass flywheel from factory & as you're planing to change it to a solid type you'll have to use the appropriate kit to suit. (the OE clutch wont work the Jun flywheel).

Exedy do a kit for the solid flywheel http://exedy.com.au/SpecSheet.aspx?SpreadsheetRowId=62666

& Complete clutch kit inc flywheel http://exedy.com.au/SpecSheet.aspx?SpreadsheetRowId=62667

& OE replacement http://exedy.com.au/SpecSheet.aspx?SpreadsheetRowId=62668

hi mate

i was thinking on getting this OEM Replacement Clutch Kit

thanks for the reply

wahid

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hi mate

i was thinking on getting this OEM Replacement Clutch Kit

Like I said you can't use an OEM Clutch with a solid JUN flywheel. Maybe try Prolex & see what the can do, or track down your local Exedy stockist.

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hi mate

i was thinking on getting this OEM Replacement Clutch Kit

Like I said you can't use an OEM Clutch with a solid JUN flywheel. Maybe try Prolex & see what the can do, or track down your local Exedy stockist.

hi

do you mean this one?

one

thanks :)

wahid

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Sorry I think I may have mixed my links up there & put you wrong. (I've fixed them now) You'll need THIS kit. I can't seem to find it on the UK site though. Drop them an email & see if they keep it or can get it in for you.

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Sorry I think I may have mixed my links up there & put you wrong. (I've fixed them now) You'll need THIS kit. I can't seem to find it on the UK site though. Drop them an email & see if they keep it or can get it in for you.

thanks dude :) :)

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  • 4 weeks later...

my lexus is off the road at the mo due to the clutch being knackered. if the guy tells me i need a new flywheel, would this be a better way to go to order one of those jun flywheels.

they seem like a good price compared to any other flywheels.

also im a little confused as to what you said about losing revs on hills? it will still pull the same up hills until you have to change down i take it?

cheers

neil

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A flywheel in it's simplest form is just a lump of pig iron stuck on the end of your crank which helps your crank shaft to rotate from the pulse of one cylinder firing to the next. For any given output of engine, the general rule is that the heavier the flywheel the slower the engine will change speed but the smoother it will be as it smooths out the pulses from the cylinders firing... Obviously the lighter the flywheel, the faster it will change speed allowing the engine to change from low revs to higher revs, needless to say that because there is less energy stored in the flywheel, then it will slow down quicker too, making the car more prone to stalling when compared to the standard flywheel, so you will have to give it a little more throttle when pulling away.... Just how much this affects the Lexus 6 cyl motor can only be described by the guys who have done the conversion as I would guess that the clutch that suits the lightened flywheel will be quite sharp in the way that it engages with it being directed more at performance and therefore built in a more robust way

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I'd be inclined to stick with the standard kit unless you intend to modify the car for more power.... I think that a lightened flywheel will make the car more difficult to drive in traffic. The standard DM flywheel seems to last well on a petrol engine.. I've seen the VW diesels need new flywheels and clutches at 20k..... I believe some of you were planning to down grade from Lexus to VAG cars.....

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