I am currently rebuilding my TII engine following the failure of the water seals. Just below the exhaust ports on the rotor housings are two small holes leading into the water jacket. The exhaust gasket and manifold blanks off these holes on my engine and I assume this is standard for UK turbo engines, where these ports are not used. As an extra precausion against possible leakage of the exhaust gasses into these ports I am intending to tap the ports 1/4" NPT and seal them with taper pluges set just below the joint face. Can anyone think of any problem with this idea?
Quote from: oldrotary;525554I am currently rebuilding my TII engine following the failure of the water seals. Just below the exhaust ports on the rotor housings are two small holes leading into the water jacket. The exhaust gasket and manifold blanks off these holes on my engine and I assume this is standard for UK turbo engines, where these ports are not used. As an extra precausion against possible leakage of the exhaust gasses into these ports I am intending to tap the ports 1/4" NPT and seal them with taper pluges set just below the joint face. Can anyone think of any problem with this idea?
Are you sure they are into the water jacket, and not the port air supply holes (which are redundant if you\'ve taken off the air pump and Air Control Valve assembly off the lower inlet manifold) ?
Pics might help
Thanks Prof. You are correct they are not coolant passages, but do indeed run up to the inlet manifold lower ports. I still have the air pump, but they are still not used as the exhaust manifold has no matching ports and simply blanks them off. I will not bother plugging them now as if there is a slight leak it will will not pressurise the coolant system , which was my concern. Thanks again.