picklenjim

I've seen them crack at the bottom of the water jacket between where the camshaft runs and the water jacket.
Block has to be completely disassembled and upside down to see this area good.

Griswald

your opinion vs another on the interweb

jeffswav

Here is what I am going to do first. I ordered AN fittings to cap everthing off then fill it up with RV antifrieze and presurize to 30psi. Check for leaks and cross fingers.

Griswald

picklenjim

I surely would never depend on a freeze plug to save my block, but????http://www.automedia.com/Replacing_a...cr20070401fp/1

Sounds like your headed in the right direction jeff.

US1 Fountain

iTrader: (1)

Don't go too high that you risk blowing past your intake gaskets and give you a false sense of damage. A buddy popped his plugs (freeze/core ) last winter do to late winterizing. He lucked out and did no damage.
I press checked mine before using torque plates, but that requires a big teardown.
Good luck!

jeffswav

Thanks guys thats good to know, I will try 20 PSI and see what that does. It seemed like 30 PSI was the water pressure when running not sure may have been 25.

Young Performance

I have yet to see the freeze plugs push out and the block not be cracked. I hope for your sake that it isn't cracked, but I'm not holding my breath. Most of the time they will crack in the lifter valley. Good luck. Let me know if I can help.
Eddie

ezstriper

seen several pop out and not crack..one guy did not find out till after running for some time, noticed sluggesh performance, boat was full of water..bilge pump not working either..had popped the one out behind the starter..but block was fine...

jeffswav

Good news so far, I drove the freeze plugs back in. Capped off all the open ends, filled with RV antifrieze, added 20 PSI of air and no leaks.