CodemanLivs

Clutch kit (pressure plate, disc and throw out bearing) and flywheel were brand new when this started. Then when I did the head gaskets i put all new clutch kit and resurfaced the flywheel. Then another new clutch kit just a cpl weeks later when I did the trans and diff swap. Which was just 2 weeks ago, maybe. The shuttering had remained consistent thru all of this. Which .... How is that possible, I've changed every single thing. Is my crossmember broken ??

I spent last week thinking it has to be the in the drive shaft. So again i got all 4 wheels off the ground . The carrier bearing seemed soft, u-joints are all solid. Had my friend under it while I basically Dyno tested it. First gear small amount of throttle and release the clutch.... NO vibration at all. Even got it up to 3rd gear before I chickened out and stopped. I don't need it to come off the stands onto my buddy. His wife would kill me!! Anyway, no vibrations. Then I pulled the e brake to the first detent (click). First gear, little throttle, as i release the clutch, Instantly shuttering bad !! My buddy is under the car saying the drive line was fine the whole time. He said it's the motor and trans jumping around. Why would pinching the back brakes cause the motor and trans to try and come off their mounts. And remember theses are all brand new mounts !! Oh and I finally changed the dog bone mount (anti pitch mount) whatever it's called. And it made absolutely no difference. The old one was fine

Oh and besides the fact that I know the flywheel was as true as can be. It was also torqued to spec with locktite on all the bolts. As was the clutch pressure plate. While doing the most recent install of the motor and new used trans, I was extremely diligent . Took my time, went over every torqued bolt even a third time to ensure it was all done correctly

If I hadn't just had it resurfaced at a really reliable machine shop maybe. But I know it was as true as a flywheel could be. Also there is no vibration other than from a dead stop or downshifting to slow down(which then feels like the trans is gonna fall out on the ground) Once the car gets moving it runs and drives beautifully.

First hello all , long time user first time poster. I'm not new to Subaru's , I'm definitely no noob when it comes to diy repair on them either. I've done it all from head gaskets to splitting a 5mt and replacing synchros (without a press.) I'm hoping someone will point me in the right direction. I'll try to keep it short. 2002 Impreza outback sport 2.5L SOHC 5mt 316631 original miles Approx 190k on motor Recently had to do the head gaskets , which I had been wanting to do so I could finally get to the clutch that has been shuttering so bad it's driving me nuts. Lapped all the valves , put some MLS gaskets in it. And had the flywheel cut its first time. New clutch kit . Can't wait to get it back on the road. I started her up so far really good. In gear release the clutch and this teeth chattering , rumbling shutter happens just like it was when I pulled it apart actually worse. WTH !?! Feels like I have the wheels blocked and I've removed the motor mounts and I'm tryin to get it to move like that. Now , we only have to 2 cars so we need to use this one. So I run out , get new trans and motor mounts . Didn't help a bit. I'm looking at everything else. Half-shafts are great , tires are new , wheel bearings are good. In the meantime were driving it to work everyday. Sometimes 100 miles a day. If I just dump it and go it's not so bad. It doesnt have time to shutter. Its worse when we baby it. Then about a month ago 4th gear starts to grind and within a week we cant even force it to stay in 4th , it violently kicks the shifter out. Then 3rd starts to go. At this point my thought is, OK. At least now I know what the problem has been. I start looking for a 5mt to match my set up. If you don't know , not such an easy task. So just the other day I finished installing a matching 5mt and rear diff, (4.11 instead of my original 3.9) same year as my car from a donor with 180k on it. Yes it's well used . But the donor had blown head gaskets as had been sitting for a long time. The gear oil was in great shape and the drain plug had almost nothing on it as far as metal grindings. And it was cheap which is what I needed. So I finally got it all back together and wouldn't you know it. The only thing I gained was 3rd and 4th gear..the shuttering is still there. So get all for wheels off the ground. Release the clutch. No shuttering. Pull the Ebrake, release the clutch and motor and trans are jumping all over the place while it shutters. Carrier bearing is soft but intact. Does anyone have a clue as to WTH is going on here. Did I just put in another trans with the exact same problem but only half the mileage on it. Or I don't know.. The dog bone brace is good but there's no way it could even cause this if it weren't. I welcome all suggestions and comments . Thank you all for reading my long story. Any and all help will be greatly appreciated Thank you