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Old 03-12-2013, 01:22 PM   #1
turboburke
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Join Date: Mar 2007
Default Clutch Suggestions for 2.0l WRX swap in SF Forester

Hi Guys,

I'm doing a 2.0l WRX engine swap into my 98 forester and will be reusing the stock 5 speed. What clutch should I use? I would prefer a full faced clutch, but it is not necessary. I don't ever plan to upgrade the turbo or even really turn the boost up.

I have heard that a stock RS would be OK, but I am not sure. I have a F1 racing ebay one and it will slip on a hard 1-2 shift with the stock 2.5. Slip as in the revs will hang out at 6k until the wheels catch up.

Thanks
Burke
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Old 03-13-2013, 01:47 AM   #2
subi400
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Quote:
Originally Posted by turboburke View Post
Hi Guys,

I'm doing a 2.0l WRX engine swap into my 98 forester and will be reusing the stock 5 speed. What clutch should I use? I would prefer a full faced clutch, but it is not necessary. I don't ever plan to upgrade the turbo or even really turn the boost up.

I have heard that a stock RS would be OK, but I am not sure. I have a F1 racing ebay one and it will slip on a hard 1-2 shift with the stock 2.5. Slip as in the revs will hang out at 6k until the wheels catch up.

Thanks
Burke
Well, good news Since you are keeping your stock tranny, you can upgrade to the 06-07 wrx push style stock clutch and flywheel. You can keep your style of throwout bearing and clutch fork and pivot ball but might just have to get a new throwout bearing just like the one you have now. Is your forester cable or hydraulic for the clutch arm? My brother's 05 rs NA has the 06 wrx stock clutch and it is really smooth. These 06-07 stock wrx clutches are good up to around 330 trq or so I believe maybe a little less. So, it would be plenty for what you need You would have to get the flywheel to match that clutch though as the clutch disk is just a bit larger in diameter plus the clutch mating surface on the flywheel is recessed just a bit.

If you want more info, just send me a pm since I know all about this set up
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Old 03-13-2013, 01:24 PM   #3
Gamble_WRX
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As for brand, everyone has their opinions, i like Exedy. i had a Stage 3 6 puck, a stage one, and now i bought a stage one for my DD honda.

ive never heard of upgrading to an 06 clutch from the 2L and honestly, the above answer seems to involve too much thought for a clutch, i would just get the clutch to go with the block, im 99% sure the spline count for the FXT, and the WRX are the same, my exedy oe replacement on my 02 WRX, held 270WHP daily driven, and i didnt replace it till i put a built trans in, at that point, i used the stage 3, because i was launching it.
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Old 03-15-2013, 04:39 AM   #4
subi400
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Quote:
Originally Posted by Gamble_WRX View Post
As for brand, everyone has their opinions, i like Exedy. i had a Stage 3 6 puck, a stage one, and now i bought a stage one for my DD honda.

ive never heard of upgrading to an 06 clutch from the 2L and honestly, the above answer seems to involve too much thought for a clutch, i would just get the clutch to go with the block, im 99% sure the spline count for the FXT, and the WRX are the same, my exedy oe replacement on my 02 WRX, held 270WHP daily driven, and i didnt replace it till i put a built trans in, at that point, i used the stage 3, because i was launching it.
Ok, first off, this is a very simple upgrade. I have done my research on this so I know... How is keeping 3 stock components, getting two new ones and putting them together too much thought...??? There is a very nice thread over on rs25 about this setup as an upgrade for the NA push style trannys. By the way, it only seemed too much thought for you because I was laying it out for what the OP exactly needed since my brother's 05 rs has the 06 wrx stock clutch and I saw how it went together.... So, I know how easy it is to install it because I helped....

What you don't understand is that you don't match the clutch for the block, you get a clutch that matches your tranny whether it is a push style all NA trannys and 06+ 2.5 wrx or pull style which is 91-94 2.2 legacy turbo, 02-05 2.0 wrx and 04 + 2.5 sti. The wrx starting in 06 got the 2.5 engine along with going to the push style clutch setup.

The spline counts are all the same, but the push and pull style clutches are different along with the clutch arms, throwout bearings and such. The pull style trans doesn't have a pivot ball but rather a large pin the clutch arm pivots on.

The OP is getting a clutch kit and flywheel that I recommended to him based off what he is doing with the 2L wrx engine he is putting in his 98 forester and the fact that his wife would like an easy clutch to drive
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Old 04-01-2013, 03:53 PM   #5
turboburke
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Default

Here is what was used -
98 Forester Throw out bearing
Stock 06+ WRX Clutch
Stock 06+ WRX Flywheel
Lightweight 06+ Flywheel

The clutch does not disengage. Any chance the clutch disk could go in backwards or something? The release fork moves, but nothing happens


I am not the one doing the work. Any ideas?

Thanks
Burke
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Old 04-03-2013, 04:29 AM   #6
subi400
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I suggested something and it is getting fixed along with a suggested part to make it better and last longer
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Old 04-03-2013, 05:56 AM   #7
turboburke
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Well, the input shaft became gouged upon installation and didnt allow the clutch to move freely. He filed it down and it seems to be fine now.
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Old 04-03-2013, 07:49 AM   #8
Aaron'z 2.5RS
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Quote:
Originally Posted by turboburke View Post
Well, the input shaft became gouged upon installation and didnt allow the clutch to move freely. He filed it down and it seems to be fine now.
I would be VERY cautious about this.. the ONLY way for the input shaft splines to get gouged would be if the splines weren't aligned and it was FORCED via tightening the bolts.. crushing things...

Putting the engine/trans in the right way it slips right into place when the splines align right... this can be a MAJOR PITA and some just say "eff this" and force it with the bolts

Bad Juju im sorry to say... keep an ear on it
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Old 04-03-2013, 08:04 PM   #9
subi400
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Quote:
Originally Posted by Aaron'z 2.5RS View Post
I would be VERY cautious about this.. the ONLY way for the input shaft splines to get gouged would be if the splines weren't aligned and it was FORCED via tightening the bolts.. crushing things...

Putting the engine/trans in the right way it slips right into place when the splines align right... this can be a MAJOR PITA and some just say "eff this" and force it with the bolts

Bad Juju im sorry to say... keep an ear on it
You do realize the OP is talking about the input shaft part where the throwout bearing slides back and forth on right? Because once the splined portion slides into the clutch disk center it doesn't move... So, the only thing that is left if the input shaft collar where the throwout bearing slides back and forth on.
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Old 04-04-2013, 07:52 AM   #10
Aaron'z 2.5RS
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Quote:
Originally Posted by subi400 View Post

You do realize the OP is talking about the input shaft part where the throwout bearing slides back and forth on right? Because once the splined portion slides into the clutch disk center it doesn't move... So, the only thing that is left if the input shaft collar where the throwout bearing slides back and forth on.
I realize EXACTLY what the OP is talking about and there is ZERO way to gouge anything upon INSTALL unless something was FORCED...

Ive only put 4 different clutches in my car and had the trans out 6x...

You learn what works and what doesnt...

I dont claim to be an expert but forcing **** dont work... obviously

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