Hey all,
So I tackled a flywheel/clutch/rear main seal job myself this past week (it took the whole week...) I put it all back together yesterday and got some pretty disturbing vibrations. I've been researching a lot and I've got a few ideas to get me going, but I was hoping to get anyone's input for my specific scenario.
(As a quick thought, I'd like to let anyone know who is attempting to do this job themselves - Don't do this on a sloped driveway! My car rolled off of two 4 ton jacks and almost rolled me over. I was able to jump out of the way in time, but from now on, when I have to jack a car up as high as is needed to get a tranny out, I'm going to do it on flat ground even if it means pulling EVERYTHING out of my garage and putting it in the driveway for someone to steal).
What I did:
-I have a 2004 GT, Convertible
-I have a 6 bolt crank and a TR-3650
-I replaced my stock flywheel and clutch with a Stage 1 Exedy clutch and lightweight flywheel
-I bought new FRP clutch bolts and dowel pins and reused the flywheel bolts (I didn't install the dowel pins because I didn't think they were used on this flywheel/clutch assembly. I couldn't figure out how they mated up)
-I replaced the throwout bearing, pilot bearing and pivot ball
-Installed and torqued the flywheel bolts to 80 ft-lb in stages 30 ft-lb, 60 ft-lb, 80 ft-lb in a star pattern (and used red locktite)
-Used the clutch alignment tool and installed the disk and PP, then torqued to 35 ft-lb in one stage in a star pattern (used red locktite)
-Greased up the input shaft, pilot bearing, throwout bearing and clutch fork using general lithium grease (what grease should I be using...?)
-I was able to get the tranny in most of the way except the last 1/4" which I used the bolts to pull it in for (big no-no... I know)
-I think the tranny mount is on correctly as I could only get it on one way
-I marked the driveshaft before pulling and put it back on the same way
-Bolted my People's Republic of California approved H-Pipe back up and attached my Chinese brand Pypes Cat-back to it, now it scrapes on EVERYTHING!!! Don't buy PYPES Exhaust!!!
My issue:
-I have a slight but very noticeable vibration while at idle
-The vibration is the worst as the car approaches 2K rpm
-Around 50 mph on the road the steering wheel shakes violently
-Sitting at stoplights I can hear a rattle/shake from somewhere around or behind me
-Haven't gotten on the freeway yet, and I don't intend to yet
-Car shifts great and the lightweight flywheel is amazingly noticeable, rev's up and down very quickly!
-95% sure there is no bearing noise when pressing on the clutch or letting up
Thoughts so far:
-I don't think it is a driveshaft issue as I installed it the same way I took it off, and I still have a vibration while in neutral
-I don't think the transmission mount is backwards because I could only make it fit one way
-I've read the dowel pins, which I didn't install, not only hold the pressure plate on while bolting up, but also help align it properly because the bolts don't do this
-I may have screwed something up, although I don't know what, by pulling the tranny in with the bolts
-I noticed that the shifter mount (top of the tranny) seemed to point at an angle when I reinstalled my shifter, but that could have been from the sloped driveway, uneven jack stands and it being a convertible with s***** subframe connectors allowing the car to twist
If you guys have any other ideas on things I should look for when I drop the tranny again or things to check before I start down that path I'd really appreciate it!
So I tackled a flywheel/clutch/rear main seal job myself this past week (it took the whole week...) I put it all back together yesterday and got some pretty disturbing vibrations. I've been researching a lot and I've got a few ideas to get me going, but I was hoping to get anyone's input for my specific scenario.
(As a quick thought, I'd like to let anyone know who is attempting to do this job themselves - Don't do this on a sloped driveway! My car rolled off of two 4 ton jacks and almost rolled me over. I was able to jump out of the way in time, but from now on, when I have to jack a car up as high as is needed to get a tranny out, I'm going to do it on flat ground even if it means pulling EVERYTHING out of my garage and putting it in the driveway for someone to steal).
What I did:
-I have a 2004 GT, Convertible
-I have a 6 bolt crank and a TR-3650
-I replaced my stock flywheel and clutch with a Stage 1 Exedy clutch and lightweight flywheel
-I bought new FRP clutch bolts and dowel pins and reused the flywheel bolts (I didn't install the dowel pins because I didn't think they were used on this flywheel/clutch assembly. I couldn't figure out how they mated up)
-I replaced the throwout bearing, pilot bearing and pivot ball
-Installed and torqued the flywheel bolts to 80 ft-lb in stages 30 ft-lb, 60 ft-lb, 80 ft-lb in a star pattern (and used red locktite)
-Used the clutch alignment tool and installed the disk and PP, then torqued to 35 ft-lb in one stage in a star pattern (used red locktite)
-Greased up the input shaft, pilot bearing, throwout bearing and clutch fork using general lithium grease (what grease should I be using...?)
-I was able to get the tranny in most of the way except the last 1/4" which I used the bolts to pull it in for (big no-no... I know)
-I think the tranny mount is on correctly as I could only get it on one way
-I marked the driveshaft before pulling and put it back on the same way
-Bolted my People's Republic of California approved H-Pipe back up and attached my Chinese brand Pypes Cat-back to it, now it scrapes on EVERYTHING!!! Don't buy PYPES Exhaust!!!
My issue:
-I have a slight but very noticeable vibration while at idle
-The vibration is the worst as the car approaches 2K rpm
-Around 50 mph on the road the steering wheel shakes violently
-Sitting at stoplights I can hear a rattle/shake from somewhere around or behind me
-Haven't gotten on the freeway yet, and I don't intend to yet
-Car shifts great and the lightweight flywheel is amazingly noticeable, rev's up and down very quickly!
-95% sure there is no bearing noise when pressing on the clutch or letting up
Thoughts so far:
-I don't think it is a driveshaft issue as I installed it the same way I took it off, and I still have a vibration while in neutral
-I don't think the transmission mount is backwards because I could only make it fit one way
-I've read the dowel pins, which I didn't install, not only hold the pressure plate on while bolting up, but also help align it properly because the bolts don't do this
-I may have screwed something up, although I don't know what, by pulling the tranny in with the bolts
-I noticed that the shifter mount (top of the tranny) seemed to point at an angle when I reinstalled my shifter, but that could have been from the sloped driveway, uneven jack stands and it being a convertible with s***** subframe connectors allowing the car to twist
If you guys have any other ideas on things I should look for when I drop the tranny again or things to check before I start down that path I'd really appreciate it!