E30 M42 Turbo build, bottom end assembly

so while I'm waiting on new rings yet here I'm going to balance my rods I've already checked the weight of all the Pistons and wrist pins and they are all the same so to balance the rods I built this get out jig basically using some skateboard bearings that I pulled well rollerblade bearings that I got at the dump and then these brackets they're just from Home Depot that I had sitting around I think there there's just braces and then I cut this black bushing out of Delrin just because I had it laying around and then

just made the stand out of some scrap wood I had it only has to last for today so it'll work so first thing I'm going to do is go through them all and weigh the small end of the rod and then see what's the heaviest what's the lightest and grind down whatever I need to to get them all the same it just so happens that these bearings I know they're just standard like skateboard bearings they are the exact size of this bore and they they slide on perfectly but sometimes bind up if you don't put

them on exact looks like all of these are within the gram which I'm fine with now I'm gonna do my scale and then measure the over all of them 626 627 6:27 6:27 so I'm going to say everything's good I didn't really expect them to be out I mean they're all original rods I also weighed all the Pistons the Pistons are all the same there om male mAh le brand once they are replacements actually found their 50 grams later than the original the original Pistons in the engine these I got from the person that sold

me the the turbo and all of the components with it now I'm just gonna put these all back together I'm using I'm using a pin from my original engines it's a spare to pump the circlips back in [Music] so our last thing I had to do was grind my rings about these from FCP these are just om ones and I made this jig using a dremel I cut a notch in this wood there's a cut-off disc here and then I found the center of this and found the center of the circle and basically have to

make sure that the end of this is perfectly flat with that and then it just kind of spins on this this is an old ring dad seemed to work rut great I took I only took off like a couple tenths at a time and just kept going back and forth because I didn't want to go too far so once you do that then you just need to order new new rings and try again so this worked great now I'm gonna start assembling it yeah so for my ring gap I'm taking the piston diameter converting it

to inches and then multiplying that by seventh ow and that's giving me 20,000 I'm gonna gap them all to fill the top ring I'm gap into 20 and then the bottom ring I'm gonna get up to 18 and so everything's together under start with cylinder one and I'm gonna compress it with this compressor that I got off Amazon it actually came with this ring tool which worked out great I'm gonna loop the inside of this and loot the outside of this just a little bit and then lubricate the inside of the cylinder as well so

everything everything is smooth [Music] [Applause] so how do I have my Pistons in I'm going to put in new bearings and then set in my crankshaft and check my clearances using some plastic age so before I check everything with the the plastic age I have to install my hardware I'm using ARP main studs as well as ARP bolts for the connecting rods since there are two piece thing wood instead of the single piece OEM I have to install all the studs first that's good to make sure they're coated with the provided assembly lubricant all right

what the hardware installed next thing I'm gonna do is put on a piece of plastic aged right there and then we'll tighten the bearing cap to torque now take that part and see what our gauge says that's what you're left with and then we'll put this gauge up against it and see what it measures no our clearance is supposed to be two thousand and a half so that's great so I take that back our tolerance is between Oh 20 and Oh 46 millimeters which converts to eight tenths and 23 no mm so we are right

in the middle of that so the only thing I have left to do the rod caps and this is a these are also ARP bolts these also need assembly loop