mr2na86

i'm trying to rebuild my 12a for the 1st time.
because the compression gets into the coolant system
after i disassemble my engine and found out the rear housing looks like this
is this housing reusable??
thanks in advance for any help

Jeezus

iTrader: (4)

Nope, no good

vipernicus42

iTrader: (4)

Nope, definitely no good.

Jon

nick812

Yea no good to reuse but good to hang on the wall.

mazda6guy

iTrader: (1)

I believe that flaking is what ruin your compression. 12a are known for not having rebuildable housings especially on high mileage motors.

Jeff20B

iTrader: (13)

Missing chrome is missing chrome. It is not the cause of compression leakage into the water jacket.

Inspect the inner (orange) coolant seal channel with a fine tooth comb to determine where and why it was leaking. Did it overheat? Too much rust? Some other reason?

mr2na86

if i force to reuse this housing what will happen???
will it come out to be 0 compression or it'll not run?

anyway is there any place will do rechrome on the housing??

thanks for all the help guys

84stock

iTrader: (5)

Rechroming has not been very successful. The good thing about the location of the flaking is that it is not on a compression face. The bad thing about the flaking is it can only get worse, and then the apex seal no longer has a smooth surface to glide across and then things can go bad real quick. It'll run, but for how long. Kinds like flushing the toilet, although everything appears to be in a nice swirl, eventually it all goes down the pipe. Try so save money somewhere else and replace the housing.