PapaSmurf Posted May 24, 2013 Share Posted May 24, 2013 I just got my crank back from the machinist - this is the first time I've used this guy and I only did because no one else in the area was able to polish such a long crank. I need you guys to look at these pics and tell me if he did it wrong. I think he just threw it in the wash I can see lines on all the journals... The larger wear line on the back that rides the rear main seal doesn't really bother me I can understand why he wouldn't polish that down. The lines on the rod and main journals do bother me. What do you guys think? Is this going to cause problems? I can't feel these lines but I can see them... Quote Link to comment Share on other sites More sharing options...
Xnke Posted May 25, 2013 Share Posted May 25, 2013 If you can't feel them, they'll be fine. You don't want to polish a journal so much that the bearings don't fit! Polishing will not replace grinding to the first undersize. Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted May 25, 2013 Share Posted May 25, 2013 It looks ok as long as it stil mics within spec. The fsm should have the spec. Quote Link to comment Share on other sites More sharing options...
PapaSmurf Posted May 25, 2013 Author Share Posted May 25, 2013 Just seems like he should have taken it undersize so clearances would be perfect and the surface would be as well. If you guys think its OK though that's good enough for me. Quote Link to comment Share on other sites More sharing options...
Xnke Posted May 25, 2013 Share Posted May 25, 2013 A lot of shops will just polish them if you asked for a polish; they won't cut them. Not every shop has the equipment to grind the crank, but they may be able to polish the crank. My local guy doesn't cut cranks, but he can polish them with his equipment. Have to send the crank about 100 miles east to get to the closest shop that does custom crankshaft work. Quote Link to comment Share on other sites More sharing options...
col Posted May 26, 2013 Share Posted May 26, 2013 That doesn't look any beter than straping it with some 1200 wet and dry with a bit of kero. Measure it up at least 2 ways on each journal. Quote Link to comment Share on other sites More sharing options...
josh817 Posted June 2, 2013 Share Posted June 2, 2013 (edited) Keep an eye on that groove on the rear flywheel flange. If you can catch your fingernail on it, order a speedy-sleeve and install it before you put the crank in. Otherwise, you will have an oil drip from your rear main seal. Same goes for the snout of the crank where the front seal rides.... and the output flange on the tranny. And.... if you break down a tranny, the input shaft. And.... the input flange for the diff if you break that down too.If they aren't leaking then don't worry about it. Edited June 2, 2013 by josh817 Quote Link to comment Share on other sites More sharing options...
PapaSmurf Posted June 10, 2013 Author Share Posted June 10, 2013 (edited) Wow I just learned something I had no idea that (speedi sleeve) existed I already got the crank I guess I'm going to find out if it leaks without it. Next time I guess. I'm waiting on my ARP rod bolts and then this things gonna go back together as fast as possible im moving in 2 weeks and I don't know what I'm gonna do about my garage and shop I need a magic geenie Edited June 10, 2013 by PapaSmurf Quote Link to comment Share on other sites More sharing options...
josh817 Posted June 12, 2013 Share Posted June 12, 2013 I believe RockAuto has them. I know I used one of theirs for my transmission output flange. We have a bearing/sprocket/gear place here locally where we can walk in with our part, they will measure it and have a custom sleeve made. It's about twice as much ($40 instead of $20) but you can get it don't for anything you need.Your machine shop doesn't have to do it, you can do it yourself if you have a hammer and a drift, or something of the same circular size like a coffee can. Tap it on. Worst case you could pop the speedi sleeve in the oven and put it on to a room temp crank with ease.The groove may not leak, but if the crank isn't in the motor yet, it can still be fixed. Good luck, Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.