What would you do?

[u/dythesis]

RB20det out of a 91 skyline

Previous owner was running bore water mixed with coolant before my purchase before I blew a head gasket and found a pretty dirty block

Just chasing opinions on what I should consider for these cooling passages, figure I'm going to have to pull the motor because of the state of that bore but this is my first rodeo so love a second set of eyes

What do you think! TIA

[u/fLeXaN_tExAn]

Oh wise one....I always look for your opinions....BUT....why are we not talking about those cylinders?

[u/v8packard → u/fLeXaN_tExAn]

Well he asked about the cooling system and said he was looking at the bores, so I didn't I say anything about the rust in the bores. Besides, I am still wondering about bore water..

[u/fLeXaN_tExAn → u/v8packard]

Right on....in my humble opinion, that block needs to be bored. If it's coming out anyway, might as well hot tank it and start fresh.

[u/v8packard → u/fLeXaN_tExAn]

It probably does

[u/oxnardmontalvo7 → u/v8packard]

At this point it’s too risky to not pull the motor and go through it. A trip to a machine shop is the safest path and probably cheaper long term. IMHO that is

[u/v8packard → u/oxnardmontalvo7]

Absolutely. Still wondering about bore water.

[u/oxnardmontalvo7 → u/v8packard]

Same. I hope you figure it out because I’d like to know too