Well my dirty *** h22a1 block was jet washed today it looks good besides alittle bit of oxidation on the front of the block. Is there anything i can do to get that off ? Can you paint or powder coat over that ?

 

Sure. Powder coat is best.

 

You can try some aluminum jelly. That worked well on a transmission case that was left outside for a couple years...might not work too good for severe oxidation.

If the oxidation pitted the block, powdercoating, as Don mentioned, is a good way to fix the problem, along with paint. Both options will cost a bit.

 

Would powder coating stand up to a hot tank tho? I painted my block but it came off (partially) when I had to rebuild it and removing the rest of the paint was a huge PITA. Now I want to coat it with something more permanent.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">Would powder coating stand up to a hot tank tho? I painted my block but it came off (partially) when I had to rebuild it and removing the rest of the paint was a huge PITA. Now I want to coat it with something more permanent.</TD></TR></TABLE>

What paint did you use? I used VHT flame proof paint on my block. This is the first block/head/tranny I have painted so I am still experimenting. This stuff is supposed to be pretty good from what I read.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">You can try some aluminum jelly. That worked well on a transmission case that was left outside for a couple years...might not work too good for severe oxidation.

If the oxidation pitted the block, powdercoating, as Don mentioned, is a good way to fix the problem, along with paint. Both options will cost a bit.</TD></TR></TABLE>

I am gonna have to look into that aluminum jelly stuff.. Thanks

 

I used the VHT engine enamel. Supposed to resist oil and chemicals. The stuff rubed off over time. Surface was prepped perfectly as it was hottanked prior to painting. I was not impressed. Im not a fan of painting engine parts anymore. Its a temporary solution that will end up making more of a mess later down the road.

 

dude CLR and a peice of scotchbrite pad.

 

a wire wheel will work well to clean it up although it may not be long term as there is still nothing to protect from future oxidation. powdercoating would be ideal.

m.

 

DO NOT USE A WIRE ******* WHEEL!!!!!!

first of all it's next to impossibe and did you ever run a wire wheel on aluminum????

 

I used a small stainless wire wheel on a dremel with some aluminum polish for the tough spots. A large course wire wheel on a hand grinder will **** things up in a hurry.

Other than that I'd use some scotch brite and good amounts of aluminum polish (it works really well as an aluminum cleaner). degrease all the slop off, and then scotch brite with no polish if you want. it will look pretty good!

 

i have used a wire wheel without problem on trannyc cases, blocks, and intake manifolds all with good results.

m.

 

I media blasted mine, then had it hot tanked. The hot tanking process caused it to turn a darker color. Maybe a reaction to the checmicals, maybe dirty solution, unsure. Im going to try some aluminum polish to see if that will brighten it up.