net seven

I just tested mine and I got .002" end play... you said you always have at least .0025 so should I get a bigger spacer or just keep it the way it is? This is a street ported S5 engine running a T04B turbo at 15psi.

Judge Ito

.002 is fine. You could use it with no worries. The problem really happends when you don't have no end play or barely have enough.

Lynn E. Hanover

Most thrust bearing failures occur during disassembly. You have read all of these systems for removing the flywheel or counterweight from the rear taper. It is a big problem, and the first time you have to do it, it can be maddening.



The most popular system seems to be to pry like hell on the front of the flywheel and the rear iron while beating the snot out of the flywheel. The big problem with this method is that it almost always works. What? It works and thats a problem?



Yep.



When you pry on the flywheel or counterweight, you are trying to pull the crank out of the engine. What is preventing that from happening?



The front thrust bearing set is being crushed between the hard washer on the back of the front counterweight and the thrust plate. Both pieces are harder than the hinges of hell. They do not react well to bing bent. The wear washer on the back of the counterweight gets little dents in it. The center of the thrust plate bends further than the outter edge so it forms a bit of a cone.



The outer ends of the rollers in the front bearing set often fracture off tiny fragments from the outer ends of the rollers.



So now that you have the engine apart, circle the help around the trash can, raise an adult beverage in a salute to the good service rendered by the dearly departed thrust set, and drop ALL of it into the can. Don't keep any pieces around to look at or play with. If you keep even one piece hanging on a nail or whatever, it eventually find it's way back into another engine.(If you braze the thrust plate to the bottom of your oil can, it will stop falling over and leaking all over hell every time you walk into the room).



Don't forget the hard washer on the back of the front counterweight, and the thick one against the front throw. The one with the chamferred center hole. That is the one you damaged when you strike the flywheel in line with the crank.



I have not been burned yet by hanging on to the endplay spacers but maybe some day.



Even if you use the factory like Racing Beat puller, If you didn't put that thrust set in this engine, replace everything. The idiot that built it the last time probably beat the crap out of it getting the flywheel off.You know how they did that, remember?





Lynn E. Hanover

schctrg

Sorry if someone already answered this question. Upon reading this thread i'm concern about my end play. I replaced all of the washers/ thrust bearings in the front stack and running down the bolt (hand tight) i measured about .003, after following racing beat recommendation of raising the torque from 87 to 120ft-lb ( i went to 105 figured it half way between 87 and 120) my clearance now measures .0009-.0012, if i really put a pry bar to the counter weight i measure maybe .0014. Should I be concern and reduce the torque for play, or just let it be?