how do we check all this stuff. haha.

 

Interesting. OP you stated that using a bore-scope you looked at the HRB in nuetral with the engine running to see if the HRB was in contact with the PP and was spinning the HRB?

 

I didn't start the car with the borescope in, but I guess I could have. I was able to feed the borescope right up to the clutch fingers from the inspection hole on the bottom, and through the square hole where the fork used to be. I was obvious there was no clearance. I then used a permanent marker to put a dot on the release bearing and rotated the crankshaft by hand. My wife watched the borescope monitor and verified that the bearing was turning. Then I tried to use a small wooden dowel to hold the bearing to see if I could stop it from turning but was unsuccessful.

 

Haha I think this time around I'll be rigging up a wireless camera inside my bell housing to watch so this never happens again!! On a serious note though, I'll for sure be checking it with a boroscope, running and not running. OP you should find a way to check crankshaft end play as well. It was easy for me, we jacked the car up, started it, pushed in the clutch and the balancer moved about a 1/4 inch out, with the already noisy QM the only reason I knew I had a problem was that my car was dying when I pushed in the clutch (trigger plate was hitting the crank sensor). Good luck, I wouldnt wish this problem on anyone else!! Mid next week I'll post a video of my findings when we measure the crankshafts mocked up in the block so stay tuned.

 

So did your thrust bearing fall out or did it just wear all the way down? I did a quick pry test on the crankshaft last week, but couldn't visually see any play. I'd like to put a dial gauge on it to verify. The oil filter should also give me confirmation that the bearing hasn't been destroyed yet.

 

You guys are disabling your clutch switch right? Helps save the thrust bearing...

 

One thrust bearing got tossed in the pan, one got burnt up. Yeah if you can't visually see it moving you are doing a lot better than I was!! I hope you caught it in time!



Ernie, no need to disable the clutch switch on the evo, they don't have problems with crankwalk. you should have no problems starting the car with the clutch depressed. this problem has nothing to do with that clutch switch, although disabling it wouldn't hurt anything either. i have to get this measuring done this week, after i do, we'll all know a lot more! Improper clutch adjustment, and/or improper crankshaft machining is what is causing peoples problems. The thust bearings are designed to take side loads for short periods of time with no problem, mine still looked like new after they came out of my stock motor with an ACT 6 puck for 40k miles.

 

Disabling the clutch switch takes the load off the thrust washers when there is no oil pressure. It is more important on push style clutches such as the Quartermaster and Tilton and does help deter crank walk.

 

i was going to say the same thing. will your motor explode if you dont? no, but it saves a lot of wear and potential future problems.

 

You guys got me in this clutch switch. What a switch has to do with this? Please dont get my question in a bad tone, Im truly confused.

 

Disabling the clutch switch allows you to start the car without pressing the clutch pedal in. This potentially saves some wear on the thrust bearings because force isn't being applied to them on each startup where there is potentially little to no oil lubrication. Once the engine is started, oil is flowing thoughout the engine and the bearing is lubricated. Disabling the switch may DECREASE the likelyhood of a thrust bearing failure. The cause of the failure is still too much force being applied to them.

 

^ what he said. The English guys looked at me in horror when I told them I hadn't done it yet.

 

Ok. Did that a long time ago, just because I'am lazy and didnt want to push the pedal to start the car!

 

If anyone has their transmission pulled right now with an OEM crankshaft installed, I'd appreciate some measurements. I'm wanting to get the measurements from the transmission spacer to the tail end of the crankshaft.

 

I wrote down my measurements that I took for the qm sheet. I'll find it and post my numbers