Join Date: Apr 2010
Location: Minneapolis, MN
Car Year: 2001
Car Model: Forester
From my experiences (presonal and read), the OEM clutches are pretty strong. Some guys over on the Naisoc forum have run them up to 370ftlbs at the wheels and they hold up. But if you have higher mileage or it was prevously abused it might be on it's way out even before you add more power. I had the original clutch in mine up til 150K miles and was running a VF39. I only replaced it because I was going to a bigger turbo and didn't want it to fail on the dyno. When I got it off it was getting close to the end of it's life but it never slipped under the power of the VF39. It's a little bit of a crap shoot!
How many miles/kms are on yours?
And sadly yes, the FXT 5 speed is about as fragile as the impreza 5spd as it nearly the same transmission. It has a little higher final ratio so that reduces the load it sees vs. an impreza. Just don't drop the clutch/launch it, keep the fluid fresh and it will treat you well enough. I destroyed my tranmission at the drag strip with a verry aggressive launch but was putting down 345+ tq at the wheels (over 400 at the crank). But I had previously launched on the street with no issues (drag strips are TACKY!).
SOLD :( 04' FXT Billet 20G E85
01' S Premium 4EAT