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When installing a flywheel meant for a WRX, do you need to use WRX flywheel bolts? Does it matter? My understanding is that the stock WRX flywheel bolts are a tiny bit shorter than the stock Legacy Turbo's.

Also, can you reuse flywheel bolts, or do they yield when tightened?

You can use either ones. I think we used the WRX bolts on Matt's car.

I'd use the new ones, though I'm sure there wouldn't be a huge problem using the old ones again.

The bolts to mount the flywheel to the engine? The flywheels don't come with the bolts (at least mine didn't). We used the ones for the EJ22T on mine.

Oh, well then we used the original ones for Matt.

I know my Exedy flywheel came with all new bolts.

My exedy didn't come with new bolts.

I reused the flywheel bolts meant for the stock n/a ej22.

Really? Mine were in a little baggy wrapped in tape in the box. Maybe they weren't supposed to be there?

I think my mechanic reused the stock bolts though or used new EJ22T bolts. I couldn't do it myself (no time) but I mentioned to him that I wanted all, new, OEM hardwear to be used, and I have no reason to believe that he didn't use new hardwear.

Hm, okay, cool... so the EJ22 ones will work. I'd like to use new bolts just in case, so I guess I'll just buy whichever ones are cheaper.

Thanks guys.

Uh, OK Vikash, do tell my friend. What do you have going on and will it be done before the F&S?

Just a used Exedy flywheel and ACT clutch kit... hopefully I can find the time to put it in. It'd be nice not to have clutch slippage all over the place.

Sweet!

Is the ACT kit used too? If not just realize that you'll need a 450 mile break in before you can launch.

Yeah, I just have to cajole Phil into helping me install it.

Yes, it is used. I was debating whether to try to get a new disc before installing it, but I think I'll just try this one and see how it goes. I should take a caliper to it first though...

Shouldn't be hard to cajole Phil, he loves wrenching.

How do the wear marks look on the disc?

Yep Vikash, I'm down to help. I'm wicked busy, but we have some maintainence stuff that I'd like help on in exchange .

Are you free tomorrow morning? I'll call you.

Oh, and after Matt's situation, I feel like I can do this in just a few hours. Matt's car was a huge learning experience, and we can get it done

Matt - Well, I don't really know anything about reading a clutch... The disc does look like it's seen better days (I'll try to take a picture and post it), but I figure it should hold me for the summer or so. I got the whole shebang for a pretty good price; let's just say adding another clutch disc would add a significant percentage to the cost thus far.

Phil - I love bartering work. Yes, I should be free tomorrow morning. Call me.

A few hours? Wow, that'd be way cool.

Hehehe, a few hours, huh? I'm betting on 5-6 hrs, which is still pretty good.

Wish I could be there to help too.

Vikash- Can you see the little grooves on the disc? If so, how deep are they?

A picture is worth a thousand words though.

The grooves of which there are like 15 or 16? I'd say they're very rougly a millimeter deep. I don't have my caliper because I lent it to Shiva.

There is a little bit of glazing on the surface, though... I was thinking of trying to sand it off or something. Is that a dumb idea?

We reused the stock flywheel bolts, worked fine just fine. The ACT 13.9 lb WRX flywheel is a bit thinner than the stocker. We put some loctite on 'em, too.

I actually still have my stock turbo clutch disc. It's in great condition - remember, my stock flywheel was hand-buffed to remove the glaze (or I can only assume that's why it was done) and the guy did a terrible job on it. My flywheel was so uneven that the clutch just didn't contact most of it's friction surface. So I've got an extra clutch disc I can send ya. Two of the springs have seen better days, they're a bit purple from heat.... But as far as the friction surface, it looks freakin new.

Edit: I'd set aside an entire weekend to work on it and get started as early as you can that Friday afternoon if you can. You may luck out and get it all done that quick but damn it sucks when your throwout bearing's retaining ring has a death grip on your transmission and won't let it drop...

vrg3 wrote:There is a little bit of glazing on the surface, though... I was thinking of trying to sand it off or something. Is that a dumb idea?

I did that with mine when I got it.

Well, the local dealer only had the WRX bolts in stock, so I'm gonna use them. The baggie is labeled "BOLT-10x24.5x17". The catalog describes our stock ones as "BOLT-10x27.5x20". I guess those numbers are (thread diameter)x(threaded length)x(unthreaded length) or something... Anyway, between these new WRX bolts and my used stock bolts I'm sure we'll figure something out.

Chris - Thanks for the offer! I'm using a WRX clutch kit, though, so I'd need a disc for the WRX.

I should Loctite these guys? Blue or red?

Yeah, I definitely have alternatives in case this takes several days.

Josh - Cool... I was just a little worried that I might create too much runout. But I guess what little bit of unevenness there is would wear away fairly quickly, particularly with the stiff ACT pressure plate.

Hmm, okay, when I said "about a millimeter" I was looking at the good side of the disc. Here's what the disc looks like on one side (big pictures -- watch out):

http://www.graphics.cornell.edu/~v/pics ... de_a_0.jpg
http://www.graphics.cornell.edu/~v/pics ... de_a_1.jpg
http://www.graphics.cornell.edu/~v/pics ... de_a_2.jpg
http://www.graphics.cornell.edu/~v/pics ... de_a_3.jpg

And on the other side:

http://www.graphics.cornell.edu/~v/pics ... de_b_0.jpg
http://www.graphics.cornell.edu/~v/pics ... de_b_1.jpg
http://www.graphics.cornell.edu/~v/pics ... de_b_2.jpg
http://www.graphics.cornell.edu/~v/pics ... de_b_3.jpg

Maybe I should get another disc after all... What do you guys think? The local dealer has one in stock for $120-$140 ish. It's a premium, but I could have it tonight, assuming I go before they close today...

They have an OEM clutch disc?

You could go for it, and use the ACT pressure plate. You'd be doing the opposite of what a local did, and he pulled good times (11.3@121 with an ACT 6-puck and a stock WRX pressure plate on a stock WRX tranny).

Looking at the pictures, that's a stock WRX clutch, eh? It's purple like the DK/Exedy clutches (and the SPEC clutch disc that Matt got. You might be OK to use the OEM WRX clutch, so if you did get it, I'd recomend it.

It's raining somethin feirce today, we'll see how it is in the morning I suppose.

Apparently that's what the ACT kit is -- an uprated pressure plate and a stock disc. So, yeah, the disc I have is a stock WRX disc, and so would be the one I'd get from the dealer tomorrow morning if I decided to.

Yeah, tomorrow's weather could be problematic. Let's see.

the part on the clutch where the trans input spline slide into looks dinged up pretty good.....

What do you mean by dinged up? It's a bit scuffed up and stuff, but nothing's actually bent or anything.

But, yeah, I'm pretty sure I'll swing by and get a new disc in the morning, and then find 450 miles to drive before race day. I'm not comfortable using this disc.