Small Block & Big Block Chevy Specific - Can you tell me the cause of this?

some ppl told me its because of the missfiring and the others told me the water leaked into the chamber and caused this just look at the pictures and tell me what problem do you see

http://i102.photobucket.com/albums/m86/6666_02/26052009262.jpg

http://i102.photobucket.com/albums/m86/6666_02/26052009261.jpg

http://i102.photobucket.com/albums/m86/6666_02/26052009263.jpg

I believe it was a missfiring because my car had a terrible distributor but let me know what do you think

anyone help please !

First off, why did you take the engine apart? was it using coolant or what?

a lot of times a miss will wash the cylinder out if ran long enough; the unburned gas will clean it out. But, a spark related problem can cause deposits on the plugs/cylinders too.

And yes, burning a small amount of coolant can create white deposits. The plugs should have similar white deposits on them. Other indicators would be that you use a small amount of coolant over time. btw, is this thing off of a salt water cooled marine engine or something? those heads have some corrosion issues developing.

I find it hard to believe that you have crack in every cylinder, allowing water to be burned. I'm not saying that its impossible, just illogical. take a look at the plugs, tops of the pistons, and let us know if it was showing any of the normal signs of a cooling issue (using coolant, burning coolant, overheating, etc.)

I toke the heads apart because Im changing the top end and the pistons has carbon on them nothing more and only spark number 1 is showing white deposits the others has carbon on them and the salts in the water jackets because of a regular water the garage used I will clean the water jacket in the block and one more thing is that when the garage had the engine they tried to open the heads but they only could open few bolts and they couldnt open the others so Im assuming that the head wasnt fully tightened thats why the water leaked into the chamber

well at the minimum you should send the heads to a reputable machine shop and have them inspected for cracks and surface flatness.

edit: and remember to put thread sealer on the threads of the head bolts before you torque them down.

yeah I will put thread sealer I know about that Im just curious about whats wrong with the heads I have a question can I clean the pistons while they are in the block? the top pistons need to be cleaned from carbon thats all

Besides half the damn water passages plugged up with crap and it running way rich what else would you like to know?

it was very rich because the distributor had weak spark and the carb was tuned by a pro. and he told me that there is a missfiring and everytime I floor it it back fires and sometimes it dont and it throws fuel from the exhaust I dont care about those heads that I toke off soon I will put the Track 1's and have more fun btw ED can I clean the pistons while they are in the block? or should I remove each one and clean it from carbon

I use a razor blade but i dont know how bad your pistons are. MAke sure the block etc are clean of all that crap in your cooling system

the pistons are in very good condition only carbon on top of them thank God I will clean the pistons later and change the crankcase gasket thnx for your help ED

it was very rich because the distributor had weak spark and the carb was tuned by a pro. and he told me that there is a missfiring and everytime I floor it it back fires and sometimes it dont and it throws fuel from the exhaust I dont care about those heads that I toke off soon I will put the Track 1's and have more fun btw ED can I clean the pistons while they are in the block? or should I remove each one and clean it from carbon

what kind of heads are the old ones? If you dont care about them you can send them to my house..................I will keep them out of your way!

what kind of heads are the old ones? If you dont care about them you can send them to my house..................I will keep them out of your way!

they were Edelbrock E-tec 200 and they are long gone I gave them to a friend of mine