We found .003 on the thrust clearance on my Son's 377 during the mockup assembly... stick shift car... I debated leaving it alone and doing some soft clutch engagements to break it in but decided during final assembly to rub the bearing on a glass plate with some 400grit stuck to it. We ended up at .007" clearance and it all worked out well. After watching this I'm glad we did. Engine makes a lot of power! Big solid roller cam and a lot of rpm. He had me squirming in my seat, losing traction at near the top of third gear-that was enough lol. Just wicked
Thanksgiving in the U. S. is the 4th Thursday of November. This year it is on the 28th. It is a month before Christmas. Good to see the engine coming along.
It was wise to shut it down and tear it down when you did. You didn't have much damage, so I would call that a good day! Glad you got the engine ready to go with a new plan. Great video as always.
Florida... seems like big damage was primarily from storm surge and tornadoes. But the path was wide. Folks gearing up to go back ought to bring ten gallons of gas down with them - no telling what's in anyones tanks at some stations. For the life of me I don't recall where I picked it up, but 0.005"-0.006" got planted in my noggin long ago - glad I never pushed the edges of spec to try 0.003". That's a large surface and is closest to the pump, but being tight can lose volume. Looking forward to the 355.
I dont know how common it is but Il do some debur passes on sandpaper on brand new thrust bearings. Not to take material off but to verify theres no high spots. Thrust issues are sometimes illusive.
Exactly correct. That's what I do too. Also GM specifies a light torque on the thrust main cap, and then to drive the crankshaft forward and then backwards before final tightening to align the two faces. At that point the end play can be checked.
Thanks for the question Dave. Watters Dyno in Springfield Ontario. Darrell brings 30 years of knowledge and experience dyno testing and tuning engines and does all of my engines. You can contact Darrell at 519-719-4264. AG
Water is starting to drain off the land post hurricane and power is on.. 3 weekends away from monthly swap meet in Brooksville so will be good to start to get back to normal somewhat.
From low budget to the heck with the budget, haha. Gonna be a nice power plant! We did ok with the storm here in Kissimmee Florida, eye passed right over us, but it was weakened to a 1 by the time it got to us. The coast got it bad though.
Yours wasn't a failure at all. Everyone who watched this locked this in their memory bank and learned. .003 in theory should have been ok-I'm thinking the dyno loaded the thrust really hard compared to average break in sessions. Another think I do to help that issue is file a chamfer on the bearing parting line to help feed oil to the thrust flange area-may have helped there.
Thanks Robert, if it saves one other thrust bearing it was worth it. Looks like the Dyno connection was the cause. I have a short video coming soon to explain. AG
Thanks Jesse, interesting that one of the most desirable places to live in the world, is also one of the most vulnerable. My thoughts are with you guys. AG
Hey AG, Tim here, NICE follow up vid......hope ur machinist didn't take to much off...... .007 on the bench MAY not be .007 when all torqued down......but i'd sure rather see .007 than .003, as u know from my comment.......then I saw a comment, that asked HOW you gained clearence.......I mean did ya watch and pay attention??.....it was explained.....UGH, I dunno if its cud deal with sofa warriors, or folks not really paying attention, where are guy like me, is FOCUSED on what happened, and HOW it was resolved......anyhoo, DUG this follow up....I KNOW u'll chk again, but let's hope for the .007, or .006......as I said I dont go smaller than .005.....TY sir!!...ENJOYED!!
I cut a bevel from the center oil slot to the back of the main and pressure feed the rear of the thrust.i started doing that on ls engines because they knock out maon bearings, especially when building boost.
Well I`ll be, I live between New Smyrna and south Daytona and most of my circle track engines have run there since 2000. Fortunatly my place was spared from any damage from the last 2 storms, didn`t even lose my power. I have run end play as small as .003 but prefer .010. to.015 and have run as much .018 and big blocks to .025 no problems at all. Lately (10 years or so) I`ve had to put the quite a few rear main bearing shells on my belt sander to get the crank end play in specs.
What method did you use to measure thrust bearing clearance with the failed thrust bearing? Did you use the dial indicator method when the crankshaft was installed and torqued down, the feeler gauge method or other?
@@itseithergonnaworkoritaint7852 I was thinking it was on a different engine in his demonstration if I remember correctly? He showed a feeler gauge method today. I was curious how he exactly checked it on the failed engine. I've done a lot of engines over the years and never had a thrust bearing fail. I seen other thrust bearings fail from other people working on them because they didn't have the torque convertor installed right or they didn't have the clutch and throw out bearing assembled right and it it wiped out the thrust bearing on start up and sometimes the engine wouldn't turn over at all from the pressure from the binding. It's weird that the thrust bearing failed when the clearance was in spec. Just trying to figure out if the measurement was measured accurately or if bolting it up to the dyno done something? If there was an actual .003 plus clearance, why would it fail just running it on a running stand with no pressure or load on the thrust bearing?
I never seen the old damaged thrust bearing up close. Did both front and rear surfaces have damage on them or was the damage done only to the rear surfaces of the thrust bearing?
You really need to turn up gain on your audio or move your mic closer to your face. Yes I can turn up volume but dang the ads or whatever comes on after is extremely loud I’m literally having to double the volume for your videos.
@@goldsgarage8236 just trying to help. The audio is clear no static etc just low. I usually never say anything and just turn up the volume but I don’t want it to hold your channel back
What stroke, a sbc 350, 327 or 283 stroke destroker?🤔 CE Performance Crate Engines on the tube has built everyone of those destrokers and they're all over 500 HP.😎👍
Thanks Marcus, de-stroking will usually deliver more RPM and more HP/cu.in. which is important in racing classes based on cu.in/lb. but less power and torque overall, especially less torque.AG
