Porsche 928 Episode 12 - How to clean an engine ready for rebuild

[@flyingpeter]

hi, i see you made a great work cleaning the block, some advice for cleaning that heavy grime, get some spray cans of degreaser, those seems to me to work the best, and try to get a hold to a hot water presure washer, you spray the grime and let it soak for about 5 minutes, you don't want to let it dry again since it result in a hard like clay sediment wich is more dificult to remove, and wash it with the hot water, it helps to get the bulk of the grime of the pieces, some residue may be left but i call it good enough. Since you are this deep into the engine i would recomend to at leats take a look to your bearings and rings, a bit more of work but is worth the peace of mind, good luck with the rebuild!

[@MrToddgibbs]

Hi Pedro, I didn't use high-pressure water because I wanted to avoid any water getting inside the engine. At the start of the week I had spray-can brake cleaning fluid, which was amazing... but it ran out (I now have another 12 cans!). Opinion seems divided about if I should go further (to the bearings) or not. The engine is quite low mileage (sub-100k) and, due to my lack of experience, Im going to leave it this time. I will do a pressure test/lead-down test before the engine goes back in. Thanks for staying with me :)

[@Zincaloom]

Those cleaners seem to be doing a good job. Nice work.

[@eoinosullivan2636]

Nice work, Todd. Cleaning an engine is a tedious and laborious job, but a necessary evil. Nice result.

[@MrToddgibbs]

Thanks Eoin! I just ordered some special aluminium deoxidiser and a clear coat to protect it. Made a start on the cylinder heads just now....

[@CLP2102]

I admire your determination and enjoy the videos, if I understand correctly, your not going to rebuild the bottom end? being that far into it, its gutsy to not go the extra little bit and re do bottom end. good luck on the build !

[@MrToddgibbs]

Hi Chad, thanks! Yes, I was going to leave the bottom end alone. I'll look into how much work it is though just in case. It is my first engine so Im still a little cautious . Thanks for watching! :)

[@CLP2102]

@@MrToddgibbs I think if you asked 10 outs 10 mechanic's, they would surely advise you to at least throw new bearings in, if not just go all the way. Your new block look pretty well used

[@r.guardia9107]

Enjoy watching your series of videos 👍 Did you consider having the block professional cleaned? Like where it’s put into a vat of hot cleaning solution and it removes all the grease, grime, old gasket material, etc.

[@MrToddgibbs]

Hi, thanks for watching ! I did, but as I wasn’t taking the bottom end apart I decided not to. It came up pretty clean though :)

[@gf04rce76]

Good progress .... oh Crank seal is a cheap quick replacement whilst you are there 👍

[@MrToddgibbs]

Thanks GF04RCE, just researched and yes, seems an sensible things to do :)

[@jamescortaville1159]

Hi Todd try Paul Anderson at 928 Spares in Stroud for an exhaust valve,

[@MrToddgibbs]

Hi James - I did drop 928Spares and email but received no reply. Will try again.

[@TTjustTT]

No broken bolts!

[@MrToddgibbs]

lol no :) and the bonus of a new block is that I don't have to remove any of the ones I snapped off !

[@realdata1378]

The 911 is the poor man's 928. Sorry - I gotta call balls and strikes. the 928 was European "Car" of the Year 1979. No other sports car including the 911 has ever won "Car" of the year. The 928 has won 2 production car land speed record at Bonneville (1986 and 2020) - the 911 has exactly won none. Even 911 enthusiast Magnus Walker has started his 928 collection - its Now or Never for the 928 still the biggest Bang for the Buck in classic Porsches. Singer/RWB/RUF could easily reimagine 928s - its just a matter of time before someone specializes in customizing and outlawing 928s - There is no substitute.

[@MrToddgibbs]

Love it :) to me they can coexist… they appeal to difference people. One is a sports car and the other is a GT. I’m not sure what Porsche was thinking by suggesting it would replace the 911.