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Helpful ReplyLooking to replace Clutch, possibly flywheel too

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Zediah
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2013/11/16 14:27:31 (permalink)
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Looking to replace Clutch, possibly flywheel too

Hey guys,
 
Been feeling it come for a while, but today I was finally able to confirm that my clutch is slipping - and slipping pretty badly. In first gear, anything past 2,000 RPM = no extra forward momentum. So I guess it's time to replace it. 
 
What I come here for is to gather your thoughts on what should I get? I've done my due diligence and searched the forums for similar posts but alas, either my google-fu failed me or there are none.
 
At the moment I'm driving a 1997 NA Bathurst and I'm not looking to boost it's power - so I imagine I don't need anything more than a stock clutch. Googling this, I see the Exedy ones are the most common replacement clutches - anyone know about/tried these? If it's common and 'cheap' on ebay, this gets my suspicions up in terms of quality and the like. Anything else someone would recommend?
 
While I was in there replacing the clutch, I was thinking I'd also replace the flywheel with a lightweight one. I'll be honest and come out straight away saying I don't know enough to confidently say whether this would be beneficial or not, but "it makes sense"? Less mass for the clutch to move = less resistance = more revolutions = engine can rev faster? Either way, assuming that yes, this is true - do you think it would be worth doing? I don't think I've seen a single thread about a flywheel on these forums so far...
 
Assume that I also would feel a difference, is there any particular brand that's best to look at? There's two lightweight flywheels at the moment on twos-r-us that lead to pretty basic manufacturer websites and descriptions that tell me nothing of what they would actually be like...
 
Looking forward to your input! 
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    nate_p
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/16 14:41:33 (permalink)
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    Eric and I helped DVS_MR2 aka Danny put a new clutch in his na sdub a few weeks ago he got a oem replacement excedy clutch and it seams to be really good, as for the fly wheel should just need to be machined (costs around $60) if you have a s54 box you can get the box off and clutch and fly wheel out with out taking the rear sub frame off took the 3 of us around 8 hours all up in Danny's garage with a engine crane, a floor jack and some axel stands.
    #2
    nate_p
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/16 14:45:45 (permalink)
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    Lightened fly wheels in my experience are great for race use where high rpm and ultra fast throttle response are desired, as for street use on a stock na I don't think it's worth the extra money and you will loose a noticeable amount of torque witch is one of the things I like about the 3s engines.
    #3

    dennis the menace
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/16 21:37:27 (permalink)
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    That's a curious statement, nate - fitting a lightened flywheel will "loose a noticeable amount of torque".
     
    To my mind, a lightened flywheel will have no effect on the torque an engine produces, but will affect the inertia seen by that engine.

    Past-President, MR2 Owners Club Qld
    "There is a fine line between hobby and obsession."
    #4
    MIDN1T3
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/16 22:05:26 (permalink)
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    +1 for Exedy. I have one (though it's heavy duty) in my Gen 3 turbo and it's awesome... No slipping and easy in traffic.

    1990 SW20 MR2 N/A with 1994 Gen 3 GTS 3S-GTE swap.

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    Zediah
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/18 15:49:04 (permalink)
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    Thanks for the input guys! Exedy seems pretty solid from what I can read and your recommendations. I'll be sure to go with them for my replacement clutch.
     
    I've been thinking some more about the new flywheel and I'm seriously looking at them now. All the flywheels that I've been able to discover though claim to be for the turbo (3SGTE) and not for my NA engine. I noticed that the Exedy clutch for the 3SGTE is different than for the 3SGTE (21 vs 20 teeth for example) - it doesn't sound promising that the flywheel would be correct for both either. Anyone able to shed some light onto this?
    #6

    Gatesys SW20
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/18 16:30:45 (permalink)
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    I bought my gen 2 Na an exedy sports tuff kit for around 300$ mark. and its fantastic, the pedal is a little higher than half way but is very strong, once broken in a gave it a bit of abuse and its holds very nice!
    and as light as my stock one, very happy!
    #7
    -Totenkopf-
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/18 18:06:43 (permalink) ☄ Helpfulby Zediah 2013/11/18 23:44:08
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    Turbo flywheel wont work for an NA.  The clutch diameters are different for a start I am pretty sure.
    #8
    5SGTE
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/18 22:02:40 (permalink)
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    I've used a few Exedy clutches in my time and always found them to be good. 
     
    I've used standard replacement, in an old 2L rwd celica.  From my experience with this when my T18 (good ol' t50 box in this one) needed a new clutch I decided to try a HD although all the running gear was stock.  I found this clutch gave me much more 'feel' and bite and was only marginally heavier and in no way at all unpleasant for what was then my DD.
     
    My Mr2 (5sgte) has a modified GT4 Exedy in it now and while it hasn't seen much use at all I find its feel too also be good and don't expect any issues with street duties.
     
    Remember to get the alignment tool from them too, its only a few extra $ but is a good tool to have.
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    Zediah
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/19 11:57:18 (permalink)
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    Thanks Toten for that information. I didn't think they would be interchangable.
     
    I've been looking for 3SGE specific flywheels and I've been able to find two in total, both are from Japan and almost seem to be 'custom' in a sense. The JUN one says to give 3 months before it arrives - I don't necessarily have that long as the clutch is on the way out already and would like to avoid opening it up again. Anyone know anything about these?
    http://www.toda-racing.co.jp/en/product/flywheel/3sg-sw20.html
    http://www.rhdjapan.com/jun-lightweight-flywheel-ultra-light-type-toyota-sw20-st165-st18-st20.html
     
    5SGTE: I'll be sure to get an alignment tool! 
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    Tree
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    Re: Looking to replace Clutch, possibly flywheel too 2013/11/19 19:11:02 (permalink)
    +1 (1)
    From your description, OEM exedy replacement ~$180 and machined flywheel $50. Lightened flywheel means it will rev faster but also lose revs/momentum faster so it works both ways...which means it can take longer for the clutch to grab if you tend to slip it.
    I take my car to the track (when I have $$!!) and stock clutch/flywheel is fine, in fact I want it to be my weakest link and not the gearbox on a mid-engined car :)
    Unless you're heel-toeing almost every corner you won't realise the benefits of lightened flywheel as much imo.
    My 2c :)
    #11
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