986 3.2 home engine rebuild

[OldManMo]

Originally Posted by 986tate

So, Mo, how’s it going?
😀

Yes, thank you @986tate, my bad as I have been slack posting progress. Have lots to share but time, money has been a killer.

Quick update, lots of cleaning, refurbishing and waiting on parts. I have rebuilt crank carrier with a super finished crank and am about to bolt the refurbished and balanced con rods to new and balanced pistons. Apart from seriously dodgy chain guides nothing seems to be too far gone and tolerances are within values for many existing posts.

Will do a more detailed post with all the photos I have soon, promise 😁

Thank you to all
Mo

[OldManMo]

hi all

first off, my bad for not updating in a while. As mentioned my ultrasonic went bang and it took a while to get to the point the seller was willing to refund the cost. While that was going on and while I was waiting for parts I decided that I wasnt totally happy with the level of clean I was getting on the cams, crank, IMS, heads and block so sent the cams, sprockets, crank and few other bits off to be superfinish'ed and loved the result, not just how shiny everything was (ooohhh shiny) but also because I could feel the difference on the lobes and journals with my hands and fingers.

To demonstrate, here are some before and afters of the crank and IMS

Crank straight out of engine


First clean via Ultrasonic tank


Second clean by hand


Superfinishing




Now, I completely understand that it is my responsibility to check, double check and ensure no media had entered any of the oil ways (I was also reminded by the company that did the work) and I did just that, and while I was using a number of pipe cleaning brushes and yes, media did drop out so it does pay to check.

[OldManMo]

Also IMS before and after

[OldManMo]

Blocks and heads were aqua blasted, though I need to dig out the heads before pics the results was amazing. Still need to thoroughly check all pathways and do my own cleaning to ensure no glass beads remain









Will take better pics of the heads later and oh yes, thats a new oil pump

[OldManMo]

Crank carrier cleaned up nice after one go in the ultrasonic tank, though when I looked carefully I could still see crud on the seats





Some loving hand cleaning later and all is clean. I did check for any out of round but there was very little deviation

[OldManMo]

so next was to reassemble the carrier. At this point I pulled in my son to learn. Laid out all the parts to check we were ready to go

[OldManMo]

Next day we got to work as soon as he came home from school.

Oil squirters go in



Bearings


Things are bit too heavy now so I stepped in. All bearings lubed up and crank on


and back together. A bit of panic at this point as the crank did not spin as freely as I though it would. My son then pointed out what we saw on Jakes video that the carrier must be torqued down first. Good he was paying attention when we watched the DVDs