Center Exhaust Port Crack

[flatheadmurre]

Originally Posted by Ronnieroadster

I tried that stuff its not worth the effort just more diluted product! The sodium silicate is a lot better and for less than halt that price for a gallon take a look.
Sodium Silicate 37.5% Type N - 1 Gallon Water Glass Auto Repair Head Gasket on Ebay for $22.99 a whole gallon

Ronnieroadster

I use it on regular basis and it does work...Seal-lock products been around in the engine rebuild buisness a long time.
Ronnie i get that you done this since the dinosaurs walked the earth but sometimes you come on like a bulldozer telling it´s your way or the highway...we all have an opinion based on the sum of our fuckups...
I´m just a small shop putting out an engine a month and only having 250 blocks on the shelf but i have tried any way i could come up with saving theese blocks during the years so usually what i state is based on what i do in real.

[Ronnieroadster]

Originally Posted by flatheadmurre

I use it on regular basis and it does work...Seal-lock products been around in the engine rebuild buisness a long time.
Ronnie i get that you done this since the dinosaurs walked the earth but sometimes you come on like a bulldozer telling it´s your way or the highway...we all have an opinion based on the sum of our fuckups...
I´m just a small shop putting out an engine a month and only having 250 blocks on the shelf but i have tried any way i could come up with saving theese blocks during the years so usually what i state is based on what i do in real.

Sorry I come across a little strong but since I have been doing this for a number of decades already learned what will and wont work so I try to spread the word. Running the flathead all out was a steep learning curve {pushing over 4 times stock HP} that showed the weak points that needed attention. Cracks were a constant issue until I figured out how to stop it from happening. Repairing those cracks during the learning curve was important to save blocks with tons of work into them. So I tried pressure sealing also heated blocks per some sealer instructions found no magic solution only one that actually helped was the Sodium Silicate AKA water glass. Heck I even pined some cracks with the engine still in the car at the track and added the sealer as well some of my older race blocks have gone threw hell and back. Having fun doing it and will continue to as time goes on. Now next curve what happens to a flathead pushing 200 on the salt might find more issues to deal with time will tell.
Ronnieroadster