MurtazaDSM

I searched already and know to use the gm product to clean carbon off the pistons but am I suppose to pack greece between the cylinder wall where the coolant is? also how can I clean the cylinder walls can I use carb cleaner on a shop rag? what is the best way to clean the deck of the block to even it out.

GhostAccord

Why are you packing the cooling passages with grease? Are you storing this block for a while or sending this block away? Not sure what your asking??????

Sure you can use carb/throttle body cleaner on the cylinder walls. However, If you do clean them with a degreaser/cleaner. Make sure to apply a generous coat of engine oil to them when your done. This will ensure they don't rust.

Best way to clean the deck is to soak it liberally with carb/throttle body cleaner. Let is sit for a while and then very carefully use a sharp tool/razor blade and scrape the crap off. or take it to a shop and have it re-surfaced if it is that uneven.....

MurtazaDSM

I thought you pack it with greece so no residue goes in it

cibao2ner

best thing to clean cylinder walls is automatic transmission fluid...has alot of detergents and rust inhibitors....also rubbing alchohol if your indoors is good to clean engine parts...and simple green for greasy parts...

webbpaul

just blew a head gasket, this thread is exactly what i was looking for.

solis153

I was changing my HG on my GSR and i decided to clean the carbon build up on the cyclinders. I forget what i used to clean them but my point is a few month later i started burning oil. I took my car to my tuner and did a leak down and compression test to determine it was the rings going bad. I let my tuner know that i cleaned the carbon off the cyclinders and he said that was a no no and most likely the cause of the rings going bad because all that crap gets in between the cyclinders and walls fudging stuff up!

Im not saying this will happen to you but good luck sir

MurtazaDSM

ok im going to attemp it tomorrow because I found a good write up webbpaul check it out
http://forums.bimmerforums.com/forum....php?t=1251083

and here is the pic of the pistons can someone tell me the condition of them are they regular because I think cylinder 4 was lean and what is the best way to clean the cylinder walls? should I spray brake cleaner on a lint free rag and just wipe the walls clean

94B18EG

my dad owns a machine shop and we have been building v8s as far back as I can remember we used a honing brush and squirted auto tranny fluid into the cylinder while doing it..never had a prob but we did it right b4 installing the pistons not for storing the block..but glwb

blackeg

dont use brake clean on cylinder walls if the motor is already together. just doesnt seem like a good idea.

spray some wd 40 on a shop towel and lightly wipe the walls. seriously though, a little bit of carbon is normal and not a big deal. for the deck surface you can use a finer grit white or grey colored scotchbrite pad. just be careful not to get any crap into the cylinders themselves. it only takes a few small pieces of foreign material to mess stuff up

91tegraRS

leave it alone ...the last thing you want is a bunch of carbon down in between the piston and cylinder walls sitting on the rings .....say goodbye to your cylinders
why do you think that most cars burn oil after a head gasket replacement?
because people think they are helping by cleaning the top of the piston but they are doing more harm than good by getting debris down in the rings and scarring the cylinder

if you want to clean them off that bad you have to take them out and do it

otherwise put it back together and get it running and spray some combustion chamber cleaner in WHILE ITS RUNNING AND BURN THAT **** OUT

just going from experience ...one of my first head gaskets i cleaned the tops of the pistons and it smoked like a train burning oil BAD .....i did my friends car and we slammed a head gasket on it never cleaned anything other than the gasket surfaces and it never smoked ... might sound odd but i have seen it over and over again at the dealer where i work

94B18EG

Oh nvm I thought you were pulling the motor all the way apart...leave it alone if not

MurtazaDSM

alright I guess I wont be cleaning the pistons but when I clean the deck of the block should I put shop towels in the cylinder?

chiprez

I know im a little late to the party but heres an awsome link to cleaning your pistons......

http://revlimiter.net/blog/2011/04/c...s-like-a-boss/