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January 18, 2020, 05:32:49 PM
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Author Topic: Returning with a question.  (Read 4307 times)

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Offline hydrochloric

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Returning with a question.
« on: May 22, 2013, 02:49:17 AM »
So it's been awhile since I was around.  Mostly thanks to finals, but it's not like I haven't had plenty to do anyway.  Now it's time for the question.

I just (as in ~4 hours ago) finished pulling a friend's Outback engine to replace my damaged one (gouged cylinder wall from failed spark plug equals 1QT of 10-40 every 900 miles...).  Since the engine will be out, I'll do a clutch, obviously.  The question is the flywheel- I was looking into a lightweight.  RS LWFWs seems to be rather rare, though (ACT's Streetlite is apparently out of production, the Prolite is too light, and the Exedy is muy casho).  So I was wondering if a WRX's could be used.  Here's what I managed to figure out so far:

Yes, as long as it's 03+ WRX and I use the RS clutch disk and pressure plate.
No, the pressure plate bolt patterns are completely different.
No, the WRX FW is thinner.

Obviously the internet may not be the best option for finding these things out.  But what the hell, let's see what people here say.  Anybody done this?  :buck2:

(The friend:)
-'00 BRP 2.5RS- rustbucket DD with SUPERCHARGED! junkyard engine  :D  -'66 VW Type III 1600 Squareback- Survivor, 42k miles  -'83 944- mostly-un-broken track car  -'50 Hudson Commodore 6 TSD rally car  -'93 Audi S4- New DD.  Eventually.

Offline Pitcrew

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Re: Returning with a question.
« Reply #1 on: May 22, 2013, 08:07:57 AM »
Get stock flywheel surfaced, live happy.....cheaper better option that doesn't have the potential to create a misfire cel. IMO.
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Offline Turbaru

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Re: Returning with a question.
« Reply #2 on: May 22, 2013, 08:14:20 AM »
 ^ I concur!
ACT clutches have a good rep but I was advised to stay away from their lwfw's !
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Offline deadlydave

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Re: Returning with a question.
« Reply #3 on: May 22, 2013, 10:23:44 AM »
Get stock flywheel surfaced, live happy.....cheaper better option that doesn't have the potential to create a misfire cel. IMO.
^ I concur!
ACT clutches have a good rep but I was advised to stay away from their lwfw's !

RomRaider - Disable misfire cyl 1-4.  I have the Jun 9lb flywheel, it's totally livable.  For the RS though, is there an option that is just 'lighter than stock' without being a feather weight? 

LWFW's for my 318 are like 600 bucks.  Owning a 'legacy' automobile is a real slap in the face sometimes.
« Last Edit: May 22, 2013, 03:42:48 PM by deadlydave »

Offline zeedeveel55

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Re: Returning with a question.
« Reply #4 on: May 22, 2013, 11:01:08 AM »
I thought i read or heard somewhere that the Subaru flywheels do not have enough tolerance to machine them.
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Offline Turbaru

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Re: Returning with a question.
« Reply #5 on: May 22, 2013, 11:34:52 AM »
I was told an OE STi FW can be resurfaced one time, sometimes even twice! 
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Offline hydrochloric

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Re: Returning with a question.
« Reply #6 on: May 22, 2013, 06:42:33 PM »
Get stock flywheel surfaced, live happy.....cheaper better option that doesn't have the potential to create a misfire cel. IMO.

RomRaider - Disable misfire cyl 1-4.  I have the Jun 9lb flywheel, it's totally livable.  For the RS though, is there an option that is just 'lighter than stock' without being a feather weight? 

LWFW's for my 318 are like 600 bucks.  Owning a 'legacy' automobile is a real slap in the face sometimes.

For the RS, the Exedy is ~12lbs, the ACT Streetlite is ~13.  The Prolite is ~11.  I want to stick to about 12, tons of people run those with no problems whatsoever on misfire, unless they also have some serious cams (Delta 3000 grinds and prolite fw = hell of a lumpy idle).  The stocker is 28lb, aren't stock WRXs only about 20?  A stock WRX FW would still be a cheap improvement then.

Still doesn't change the original question...

I thought i read or heard somewhere that the Subaru flywheels do not have enough tolerance to machine them.

That would sort of lend credence to the theory the WRX FW is thinner, because I know the RS FW can be resurfaced.
-'00 BRP 2.5RS- rustbucket DD with SUPERCHARGED! junkyard engine  :D  -'66 VW Type III 1600 Squareback- Survivor, 42k miles  -'83 944- mostly-un-broken track car  -'50 Hudson Commodore 6 TSD rally car  -'93 Audi S4- New DD.  Eventually.

Offline JHMEJ6

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Re: Returning with a question.
« Reply #7 on: May 23, 2013, 07:14:20 PM »
http://competitionclutch.com/store/dsp_part_detail.php?vinvid=3663 13.9 lbs, I think its around $270 on amazon.

Offline hydrochloric

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Re: Returning with a question.
« Reply #8 on: May 24, 2013, 01:02:14 AM »
Loads a blank page Comp Clutch page?  :?
-'00 BRP 2.5RS- rustbucket DD with SUPERCHARGED! junkyard engine  :D  -'66 VW Type III 1600 Squareback- Survivor, 42k miles  -'83 944- mostly-un-broken track car  -'50 Hudson Commodore 6 TSD rally car  -'93 Audi S4- New DD.  Eventually.

Offline deadlydave

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Re: Returning with a question.
« Reply #9 on: May 24, 2013, 10:10:13 AM »
Well you could always be the pioneer. 

I know there was some issue with the '09(?) WRX being shipped with the 2.5i clutch which was quite inadequate.

Offline hydrochloric

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Re: Returning with a question.
« Reply #10 on: May 24, 2013, 04:04:19 PM »
Being a pioneer requires capital....  I guess I'll try asking on RS25, someone there has probably tried it.
-'00 BRP 2.5RS- rustbucket DD with SUPERCHARGED! junkyard engine  :D  -'66 VW Type III 1600 Squareback- Survivor, 42k miles  -'83 944- mostly-un-broken track car  -'50 Hudson Commodore 6 TSD rally car  -'93 Audi S4- New DD.  Eventually.

Offline hydrochloric

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Re: Returning with a question.
« Reply #11 on: May 24, 2013, 04:25:43 PM »
Ah-ha!  Digging deep into the archives at RS25 netted me this:

On an '00 RS, EITHER:

06-07 WRX FW
06-07 WRX Pressure Plate
06-07 WRX Clutch Disc
00-01 RS Fork
00-01 RS Throwout Bearing
00-01 RS Fork Pivot

OR

06-07 WRX FW
06-07 WRX Pressure Plate
06-07 WRX Clutch Disc
06-07 WRX Fork
06-07 WRX Throwout Bearing
06-07 WRX Fork Pivot
*The fork or the tranny bellhousing needs clearancing in this setup.

Now I just need to fiddle with products/prices to see what makes more sense.
-'00 BRP 2.5RS- rustbucket DD with SUPERCHARGED! junkyard engine  :D  -'66 VW Type III 1600 Squareback- Survivor, 42k miles  -'83 944- mostly-un-broken track car  -'50 Hudson Commodore 6 TSD rally car  -'93 Audi S4- New DD.  Eventually.

Offline JHMEJ6

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Re: Returning with a question.
« Reply #12 on: May 24, 2013, 05:00:26 PM »
It's part number 2-738-ST

Offline madlife

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Re: Returning with a question.
« Reply #13 on: May 28, 2013, 08:34:59 AM »
RomRaider - Disable misfire cyl 1-4.  I have the Jun 9lb flywheel, it's totally livable.

Being livable is dependent on the driver, and even more so the clutch its matched with.

Offline hydrochloric

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Re: Returning with a question.
« Reply #14 on: May 28, 2013, 10:21:38 AM »
I wouldn't go that light anyway.  There's a slightly used ACT setup, FW plate and disc for an 06 on NASI right now...  Just need a throwout bearing.
-'00 BRP 2.5RS- rustbucket DD with SUPERCHARGED! junkyard engine  :D  -'66 VW Type III 1600 Squareback- Survivor, 42k miles  -'83 944- mostly-un-broken track car  -'50 Hudson Commodore 6 TSD rally car  -'93 Audi S4- New DD.  Eventually.
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